FREESCALE SDK135/D

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Embedded SDK
(Software Development Kit)
Type 1 Telephony Features Library
SDK135/D
Rev. 1, 07/23/2002
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Contents
Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Suggested Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Definitions, Acronyms, and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
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About This Document
Chapter 1
Introduction
1.1 Quick Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 Telephony Features Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.3 Overview of the Type 1 Telephony Features Library . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.3.1
Background. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.3.2
Features and Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Chapter 2
Directory Structure
2.1
2.2
Required Core Directories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Optional (Domain-Specific) Directories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Chapter 3
Type 1 Telephony Features Library Interfaces
3.1 Type 1 Telephony Features Library Interface Services . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2 Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2.1
Variable Definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.3.1
Type1CIDcreate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.3.2
Type1CIDdestroy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.3.3
Type1CIDinit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3.3.4
Type1CID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Chapter 4
Building the Type 1 Telephony Features Library
4.1
Building the Type 1 Telephony Features Library . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
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Chapter 5
Linking Applications with the Type 1 Telephony Features Library
5.1 Type 1 Telephony Features Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1.1
Library Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Chapter 6
Type 1 Telephony Features Library Applications
Chapter 7
License
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6.1 Type 1 Verification Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.1.1
Test Set-up and Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.2 Example Application Using cid1.lib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
7.1
ii
Limited Use License Agreement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Type 1 Telephony Features Library
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List of Tables
Type 1 Telephony Features Library Memory and MIPS Requirements . . . . . . . . . . . . . . 1-5
Type1CIDcreate Arguments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Type1CIDdestroy Arguments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Type1CIDinit Arguments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Type1CID Arguments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
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1-1
3-1
3-2
3-3
3-4
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Type 1 Telephony Features Library
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List of Figures
The Functional Blocks of a Generic Type 1 Telephony Solution. . . . . . . . . . . . . . . . . . .
Core Directories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
cidtype1 Directory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
cidtype1 Directory Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Example of a cid1 Library Link to a Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-4
2-1
2-2
2-2
4-1
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Type 1 Telephony Features Library
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List of Examples
teldefs.h - Reference Definition for Type1CID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
cid1.h - Reference Definition for Type1CID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Example of a linker.cmd File for Type 1 Telephony Features Library. . . . . . . . . . . . . . .
Use of Type1CID Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1
3-3
5-1
6-2
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Type 1 Telephony Features Library
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About This Document
This manual describes the Type 1 Telephony Features Library for use with Motorola’s Embedded
Software Development Kit (SDK).
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Audience
This document targets software developers implementing communication features for analog telephone
lines.
Organization
This manual is arranged in the following sections:
•
•
•
•
•
•
•
Chapter 1, Introduction—provides a brief overview of this document
Chapter 2, Directory Structure—provides a description of the required core directories
Chapter 3, Type 1 Telephony Features Library Interfaces—describes all of the Type 1
Telephony Features Library functions
Chapter 4, Building the Type 1 Telephony Features Library—tells how to build a test
application project with the pre-built Type 1 Telephony Features Library
Chapter 5, Linking Applications with the Type 1 Telephony Features Library—describes
linking projects with the Type 1 Telephony Features Library
Chapter 6, Type 1 Telephony Features Library Applications—describes the use of the Type 1
Telephony Features Library through test/demo applications
Chapter 7, License—provides the license required to use this product
Suggested Reading
We recommend that you have a copy of the following references:
•
•
•
Motorola DSP56800E Reference Manual, DSP56800ERM/D
Motorola DSP568xx User’s Manual, for the DSP device you’re implementing
Inside CodeWarrior: Core Tools, Metrowerks Corp.
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Preface
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Conventions
This document uses the following notational conventions:
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Typeface,
Symbol or Term
Meaning
Examples
Courier
Monospaced
Type
Code examples
//Process command for line flash
Italic
Directory names
Project names
Calls
Functions
Statements
Procedures
Routines
Arguments
File names
Applications
Variables
Directives
Code snippets in text
...and contains these core directories:
applications contains applications software...
Bold
Reference sources
Paths
Emphasis
...refer to the Targeting DSP5685x Platform
manual....
...see: C:\Program Files\Motorola\Embedded
SDK\help\tutorials
ALL CAPITAL
LETTERS
# defines/
Defined constants
# define INCLUDE_STACK_CHECK
Brackets [...]
Function keys
...by pressing function key [F7]
Quotation
marks, “...”
Returned messages
...the message, “Test Passed” is displayed....
...CodeWarrior project, 3des.mcp is...
...the pConfig argument....
...defined in the C header file, aec.h....
...if unsuccessful for any reason, it will return
“NULL”...
Blue Text
Linkable on-line
...refer to Chapter 7, License....
Number
Any number is considered
a positive value, unless
preceded by a minus symbol to signify a negative
value
3V
-10
DES-1
Definitions, Acronyms, and Abbreviations
The following list defines the acronyms and abbreviations used in this document. As this template
develops, this list will be generated from the document. As we develop more group resources, these
acronyms will be easily defined from a common acronym dictionary. Please note that while the acronyms
are in solid caps, terms in the definition should be initial capped ONLY IF they are trademarked names or
proper nouns.
ADC
x
Analog-to-Digital Converter
Type 1 Telephony Features Library
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AGC
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Automatic Gain Control
API
Application Programming Interface
ASCII
American Standard Code for Information Interchange
BPF
Bandpass Filter
CID
Caller ID (Calling Party Name and/or Number Identification)
CPE
Customer Premises (telephony) Equipment
CQ
Call Qualifier
DAA
Data Access Arrangement
DSP
Digital Signal Processor or Digital Signal Processing
DTMF
Dual Tone Multiple Frequency
FSK
Frequency Shift Keying modulation
IDE
Integrated Development Environment
LPF
Low Pass Filter
MDMF
Multiple Data Message Format of GR-30-CORE
MIPS
Million Instructions Per Second
OnCE™
On-Chip Emulation
OSI
Open Switching Interval
PC
Personal Computer
PCM
Pulse Code Modulation
PSTN
Public Switched Telephone Network
SDK
Software Development Kit
SDMF
Single Data Message Format of GR-30-CORE
SRC
Source
VMWI
Visual Message Waiting Indicator
References
The following sources were referenced to produce this book:
1.
2.
3.
4.
5.
Motorola DSP56800E Reference Manual, DSP56800ERM/D
Motorola DSP568xx User’s Manual, for the DSP device you’re implementing
Targeting Motorola DSP568xx Platform, for the DSP device you’re implementing
Motorola Embedded SDK Programmer’s Guide, SDK101/D
SR-3004, Testing Guidelines for Analog Type 1, 2, and 3 CPE as Described in
SR-INS-002726 (a module of ADSI, FR-12), Telcordia Technologies, January 1995.
6. GR-30-CORE, LSSGR: Voiceband Data Transmission Interface Section 6.6 (a module of
LSSGR, FR-64), Telcordia Technologies, December 1998.
7. GR-31-CORE, LSSGR CLASSSM Feature: Calling Number Delivery (FSD 01-02-1051) (a
module of LSSGR, FR-64), Telcordia Technologies, June 2000.
8. GR-1188-CORE, LSSGR CLASSSM Feature: Calling Name Delivery Generic
Requirements (FSD 01-02-1070) (a module of LSSGR, FR-64), Telcordia Technologies,
December 2000.
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Preface
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9. GR-1401-CORE, LSSGR CLASSSM Feature: Visual Message Waiting Indicator Generic
Requirements (FSD 01-02-2000) (a module of LSSGR, FR-64), Telcordia Technologies,
June 2000.
10. ITU-T Recommendation V.23, (11/88) - 600/1200-baud modem standardized for use in the
general switched telephone network.
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Welcome to Motorola’s family of Digital Signal Processors, or DSPs. This document describes the Type 1
Telephony Features Library, which is a part of Motorola’s comprehensive Software Development Kit,
SDK, for its DSPs. In this document, you will find all the information required to use and maintain the
Type 1 Telephony Features Library interface and algorithms.
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Chapter 1
Introduction
Motorola provides these algorithms to you under license for use with Motorola DSPs to expedite your
application development and reduce the time it takes to bring your own products to market.
Motorola’s Type 1 Telephony Features Library is a licensed software library for use on Motorola
DSP56800E series processors. Please refer to the Software License Agreement in Chapter 7 for license
terms and conditions.
1.1 Quick Start
Motorola’s Embedded SDK is targeted to a large variety of hardware platforms. To take full advantage of
a particular hardware platform, use Quick Start from the Targeting Motorola DSP5685x Platform documentation.
For example, the Targeting Motorola DSP5685x Platform manual provides more specific information
and examples about this hardware architecture. If you are developing an application for the
DSP56858EVM board, or any other DSP56858 development system, refer to the Targeting Motorola
DSP5685x Platform manual for Quick Start or other DSP56858-specific information.
Note:
“DSP568xx” refers to the specific device for which you’re developing, as shown in the
preceding example.
1.2 Telephony Features Libraries
The Type 1 Telephony Features Library is one of a set of Motorola Embedded SDK modules and applications consisting of the following:
•
•
•
•
Type 1 Telephony Features Library
Type 1 and 2 Telephony Features Library
Type 1 and 2 Telephony Parser Library
Full Duplex Speakerphone Library
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1-1
Introduction
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•
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Generic Echo Canceller Library
Feature Phone Application Software
These modules are designed to interoperate to provide all of the software necessary to implement a feature
phone with full duplex speakerphone and Type 1 and 2 Caller ID functionality. Using some or all of these
modules, several other types of telephony applications are also possible. Each module may also be used
independently.
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1.3 Overview of the Type 1 Telephony Features
Library
Customer Premises Equipment (CPE) using the Type 1 Telephony Features Library has the features to support existing on-hook Caller ID services, such as Calling Number Delivery and Calling Name Delivery;
other existing on-hook services, such as Visual Message Waiting Indicator (VMWI) or Call Qualifier
(CQ); as well as future services that would use the on-hook GR-30-CORE Voice band Data Transmission
Interface from the Public Switched Telephone Network (PSTN). Type 1 CPE supports on-hook signaling
with or without power ringing and can decode data frames packaged in the GR-30-CORE Single Data
Message Format (SDMF) or Multiple Data Message Format (MDMF), depending on the needs of the specific telephony service supported, as described in Telcordia SR-3004 and other referenced service-specific
documents.
While this module is primarily intended to be used for Caller ID reception, other convenient features have
been added to allow for simple integration into a Caller ID telephone. While the module is in an on-hook
state, ring generator samples may be created during power ringing. These samples may be output to an
audio channel (for example, to be played to a speaker). While the module is in an off-hook state, DTMF
samples may be generated for dialing digits. Timing for a line flash is also provided.
The Caller ID is received between the first and second ring. The content displayed should include date,
time, and the directory telephone number and/or the name of the caller. Other existing service-specific content may also be displayed, such as Call Qualifier displays. The service-specific content of future services
may be displayed when these become deployed in the PSTN.
VMWI may be transmitted with or without power ringing, but must be received without power ringing.
The CPE is instructed by the data received in GR-30-CORE format to turn a light or other visual indicator
on or off, indicating that new messages have been received at a voice mail system or other messaging service.
The performance of CPE that incorporates the Type 1 Telephony Features Library (also called the Type 1
Library module) complies with the transmission layer requirements of Telcordia SR-3004, including those
for:
•
•
•
1-2
Frequency Shift Keying (FSK) modulation sensitivity
Twist, or level differences between FSK signal tones
FSK frequencies and variation from their nominal values
— In addition to complying with the FSK modulation frequencies of SR-3004, the Type 1
Telephony Features Library can also detect FSK transmitted using the slightly different
frequencies specified by the ITU-T V.23 modem recommendation. However, the Type 1
Telephony Features Library cannot be used directly in equipment for international telephone
networks with V.23, since the timing protocols are likely different.
Type 1 Telephony Features Library
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Overview of the Type 1 Telephony Features Library
•
•
•
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Robust detection of incoming FSK signals in the presence of significant noise impairments on the
telephone line
All signal and inter-signal timings required in SR-3004, with or without power ringing
The ability to receive FSK after detecting power ringing signals which have any of the various
cadences required by SR-3004, in addition to the Normal ringing pattern
1.3.1 Background
The on-hook Type 1 Library is basically a Frequency Shift Keying (FSK) receiver with the following additional abilities:
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•
•
•
to detect power ringing
to recognize and remain immune to various other voltage level shifts identified in SR-3004 that may
precede FSK data with or without power ringing
to recognize the start of FSK data reception
— following various other voltage level shifts identified in SR-3004 and power ringing
— following only various other voltage level shifts identified in SR-3004 (power ringing does not
precede FSK data)
— if not preceded by any of the various other voltage level shifts identified in SR-3004
Thus, required inputs to this Library are:
•
Indication of power ringing
— Usually present before reception of Caller ID in FSK data
— Usually absent before reception of VMWI in FSK data
— Used by the Library to disable the FSK receiver during power ringing
•
•
Indication of Open Switching Intervals (OSIs) or other voltage level shifts that may precede the
FSK data
The FSK data in the GR-30-CORE format appropriate for Calling Number Delivery, Calling Name
Delivery, VMWI, or other existing or future telephony service
A line interface is needed to detect the presence of a power ringing signal. The line interface can be a Data
Access Arrangement (DAA) or any line interface that can pass FSK signals from the telephone network
and has a ring detect circuit that can indicate to the DSP that a power ringing signal has been received. The
line interface circuitry may vary, depending on the individual case.
For the Type 1 Telephony Features Library to comply with Telcordia SR-3004 requirements, the user must
supply a suitable line interface that meets the following requirements:
•
•
Frequency Response--The received signal must be within voice (also called line) bandwidth, which
ranges from 300 to 3400Hz
Attenuation Distortion (Front End Range)--The Type 1 Telephony Features Library is designed to
interoperate with an Analog-to-Digital Converter (ADC) with an analog signal input range of
2.73dBm±3dB. In other words, the ADC in the line front end should have a 3V peak-to-peak analog
input voltage range.
In one possible implementation using the Motorola DSP56858EVM board, the ring signal indication from
the line interface must pass to the DSP56858EVM on one of the DSP GPIOB pins. The signal from the line
interface can be passed to the DSP56858EVM using a stereo jack. Details of required jumper settings are
described in the DSP56858 Evaluation Module User’s Manual.
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The rest of this section describes the operation at a system level of a generic FSK receiver, the major component of this Library. Figure 1-1 provides a high-level example of a generic FSK receiver used in the
Type 1 Telephony Features Library. The FSK receiver is shown inside the dashed lines in Figure 1-1. The
components shown outside the dashed lines are not supplied with the Type 1 Telephony Features Library.
Tip
Ring
DAA
BPF
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ADC
AGC
Demodulator
Functional
Blocks of a
Generic FSK
Receiver
LPF
Slicer
Decision Maker
Framing
Parser
Screen
Hour : Minute
Month : Day
Number
Name
Figure 1-1. The Functional Blocks of a Generic Type 1 Telephony Solution
The FSK receiver performs noise filtering, signal detection, demodulation, and framing, then passes Caller
ID (or VMWI, etc.) to the application layer to display on the CPE. The FSK receiver is always enabled, so
it can receive VMWI without power ringing. If receiving Caller ID, power ringing will be signaled to the
DSP to disable the FSK receiver during the ringing. The digital samples must be collected with an ADC at
1-4
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the sampling rate of 8KHz, with a minimum of 14-bit linear precision (8-bit µ-law). The ADC is not part of
this solution and must be supplied separately by the application developer; however, the DSP56858EVM
board contains an ADC. The FSK receiver starts processing the digital samples received as soon as the
ADC sends them. The FSK receiver accepts an FSK signal transmitting at a baud rate of 1200bps according to Telcordia Technologies SR-3004.
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The digital samples from the ADC will first pass through a bandpass filter (BPF) as shown in Figure 1-1,
where only the signals within line bandwidth (300 – 3400Hz) can be passed. The BPF output will be processed in an Automatic Gain Control (AGC) function. The AGC estimates the signal level to compensate
for the amplitude distortions introduced by the telephone network. In addition, the estimated power level is
used for signal detection. The AGC output sample is then sent to a software demodulator.
The demodulator will introduce a double frequency component. The following low pass filter (LPF) is
used to remove the double frequency component and pass signals within the sample frequency range. The
outputs of the demodulator are sent to the Slicer, where timing recovery is performed and a decision for a
symbol is made. The symbols are then framed to form an ASCII word. The ASCII words are passed to
upper-layer functionality external to the Type 1 Telephony Features Library for parsing and displaying
Caller ID information, or for activating/deactivating the VMWI.
The user must supply a parser algorithm external to this Type 1 Telephony Features Library to decode the
message layer ASCII words according to the appropriate service-dependent GR-30-CORE format - either
SDMF or MDMF - in a manner compliant with the message layer requirements of SR-3004. See References for the format applicable to each service that uses the GR-30-CORE protocol supported by the Type
1 Telephony Features Library. The Parser Library supplied with the Embedded SDK is the preferred
method for interoperating with the Type 1 Telephony Features Library to achieve both transmission layer
and message layer SR-3004 compliance.
1.3.2 Features and Performance
Table 1-1 details the memory and MIPS requirements for the Type 1 Telephony Features Library.
Table 1-1. Type 1 Telephony Features Library Memory and MIPS Requirements
Type 1 Telephony Features Library
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Program
Memory
(ROM)
(16 bit
words)
Data ROM
(16 bit
words)
Data RAM
1st Instance
(16 bit
words)
Data RAM
Additional
Instance
(16 bit
words)
MIPS
(When all program
and data is internal
memory)
1.7 K
20
257
192
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Chapter 2
Directory Structure
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Note:
“DSP568xx” refers to the specific device for which you’re developing, as shown in
Chapter 1, “Introduction.”
2.1 Required Core Directories
Figure 2-1 details required platform directories:
src
dsp568xxevm
nos
+
applications
+
bsp
config
include
+
sys
+
tools
Figure 2-1. Core Directories
As shown in Figure 2-1, DSP56858EVM has no operating system support (nos), and includes the following core directories:
•
•
•
•
•
•
applications contains applications software that can be exercised on this platform
bsp contains board support package specific for this platform
config contains default hardware and software configurations for this platform
include contains SDK header files which define the Application Programming Interface
sys contains required system components
tools contains utilities used by system components
There are also optional directories that include domain-specific libraries.
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2.2 Optional (Domain-Specific) Directories
Figure 2-2 shows the domain-specific directory, cidtype1.
dsp568xxevm
nos
+
applications
+
bsp
config
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include
+
modem
+
multimedia
+
security
+
signal
+
speech
+
sys
telephony
+
aec
+
caller_id
+
cas_detect
+
cidparse
+
cidtype1
+
+
Debug
+
test
cidtype12
Figure 2-2. cidtype1 Directory
As shown in Figure 2-3, the telephony directory includes specific vocoder algorithms, such as G.728, or
G.726, as well as cidtype1 - the directory that includes the Type 1 Telephony Features Library for receiving on-hook Caller ID and other services. The cidtype1 directory includes Type 1 interface algorithms.
cidtype1
Debug
test
configintram
Figure 2-3. cidtype1 Directory Structure
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The cidtype1 directory shown in Figure 2-3 includes:
•
•
Debug contains the library file (cid1.lib) for the pre-built Type 1 Telephony Features Library
test contains the test project cid1test.mcp for the pre-built Type 1 Telephony Features Library
— contains C source for the test application
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— configintram contains the linker.cmd file for the test app and also contains appconfig.c and
appconfig.h to override the SDK’s config.h for this particular project
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Chapter 3
Type 1 Telephony Features Library
Interfaces
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The Type 1 Telephony Features Library is defined as:
Type1CID.lib
The service, interface, and function calls included are described below.
3.1 Type 1 Telephony Features Library Interface
Services
The Type 1 Telephony Features Library interface provides Caller ID, Visual Message Waiting Indicator
(VMWI), and other related services which occur in the on-hook state. The Type 1 Telephony Features
Library supports FSK signals with a baud rate of 1200bps. The library demodulates the FSK into ASCII
words and passes the data payload to the application program for processing and presentation. The FSK
message can be in single or multiple data message format per Telcordia SR-3004. In the on-hook state, the
actual FSK message is received between the first and second ring. If an FSK message is not detected
during this period, no information will be available until the next call. Other services, such as VMWI, may
not involve power ringing at all.
3.2 Interface
The Type 1 Telephony Features Library can be called by an application program in C. Code Example 3-1
contains structure definitions of teldef_sControl and teldef_sSamples which are used by the Type 1
Telephony Features Library to receive information from the application and then to output results to the
application. The following is a listing of the variables in teldefs.h that are related to the Type 1 Telephony
Features Library only. The other variables are described in their respective library documents.
Code Example 3-1. teldefs.h - Reference Definition for Type1CID
#ifndef
#define
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typedef struct teldefs_tsControl
{
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// phone state.
int hookSwitch;
int handsFreeLayer1;
//on hook or off hook.
//speaker phone on or off.
//------------------- Caller ID.-------------------------int intpdata;
//pointer for modular buffer.
int cidRingPolarity;
//ring signal high or low.
int cidByteReady;
//flag for a byte when ready.
int cidByte;
//contents of the byte.
int messageDone;
//flag for a message when ready.
int messageLength;
//length of the message.
int FrameErrors;
//indicates if frame error occurred during fsk.
int flashCommand;
//indicates line should be flashed.
int flashPolarity;
//indicates the direction of flashing.
int cwdCommand;
//begin a Call Waiting deluxe pulse/dial.
int disableRinger;
//disable ring generator.
// DTMF dialer
int dtmfRequest;
int dtmfDigit;
int dtmfComplete;
//to dial a dtmf. ON = 1, OFF = 0.
//the dtmf digit to be dialed.
//flag for a dtmf when dialing complete.
//---------------- Generic Echo Canceller ----------------//Generic Echo Canceller related variables
//are declared here.
//--------------- Full Duplex Speakerphone ---------------//Full Duplex Speakerphone related
//variables are declared here.
} teldefs_sControl;
typedef struct teldefs_tsSamples
{
int line[5];
int audio[5];
int gec[5];
int aec[5];
int voipinput[5];
int voipoutput[5];
int leccid[5];
//line input or audio output.
//audio input or line output.
//generic echo canceller’s output.
//fdspk’s output.
//third port’s input.
//third port’s output.
//used by type 2 to receive line echo cancelled
//samples.
} teldefs_sSamples;
#endif
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Interface
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The structure defined in cid1.h, cid_sData, is allocated by the Type1CIDcreate() function, but is accessed
only by the Type 1 Caller ID functions. It is essential that memory be allocated for this structure for the
Type 1 Caller ID functions to use and that no other function, or the application itself, access the memory
space reserved for this structure. The Type 1 Caller ID function stores values that it needs to reuse, so
tampering with the contents of the structure will cause the function to give erroneous results.
As shown in Code Example 3-2 and Code Example 6-1, statically allocate both a teldef_sControl and
teldef_sSample structure for each instance of a Caller ID channel, while using a call to Type1CIDcreate()
to dynamically allocate the data structure.
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The use of function prototypes and structure instances for the Type 1 Telephony Features Library are
described in header file cid1.h, shown in Code Example 3-2.
Code Example 3-2. cid1.h - Reference Definition for Type1CID
#ifndef
#define
__CID1_H
__CID1_H
/***************************
Foundational Include Files
****************************/
#include "cid_type1.h"
#ifndef __TELDEFS_H
#include "teldefs.h"
#endif
/*************************************************
Structures that must be defined before
accessing Type 1 Caller_ID pointer. Examples are shown below:
*************************************************/
/*
teldef_sControl
cid_sData*
teldef_sSample
*/
Line1Control
pcid1Data
Line1Samples
/*************************************************
Function Prototypes for Type 1 Interface Library
*************************************************/
cid_sData* Type1CIDcreate(teldef_tsControl *pControl);
void Type1CIDdestroy(cid_sData *pData, teldef_tsControl *pControl);
void Type1CIDinit(cid_sData *pData, teldef_tsControl *pControl);
void Type1CID(cid_sData *pData, teldef_tsControl *pControl, teldef_tsSample
*pSample);
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/* Local variables for Type 1 Telephony Features, size of 127. Structure _sData
details are defined in header file cid_type1.h, which also contains various space
allocators and housekeeping variables. However, since these variables are not
manipulated by the application, the contents of cid_type1.h are not documented in this
SDK. */
#endif
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3.2.1 Variable Definition
This section includes a more detailed explanation of the variables in structure teldefs_tsControl that an
application using the Type 1 Telephony Features Library must set. Also included in teldefs.h are the data
structures for the Type 1 and 2 Telephony Parser Library, needed to help display the received FSK
message. For additional information, see the document Type 1 and 2 Telephony Parser Library.
hookSwitch
Set by the application to indicate to the Type 1 and Type 1 and 2 Libraries
whether the phone is on-hook or off-hook
On-hook = 0
Off-hook = 1
handsFreeLayer1
Set by the application to indicate to the Type 1 and Type 1 and 2 Libraries
whether the handset or handsfree is enabled
intpdata
Set and allocated by the Type1create() to indicate the address of the modulo
buffer for FSK
cidRingPolarity
Set by the application to indicate to the Type 1 and Type 1 and 2 Libraries when a
ringing signal is detected on the ringing detect circuit. The ringing detect circuit
should be capable of detecting either the envelope of the ringing signal itself or of
a square wave whose fundamental frequency is the ring frequency. For purposes
of ringing detection, the envelope of a signal is either the amplitude of a signal or
some more slowly varying amplitude detected by less sensitive circuitry.
cidByteReady
Set by the Type 1 and Type 1 and 2 Libraries to indicate to the application (or
Type 1 and 2 Telephony Parser Library) that one byte is ready from the FSK
receiver
cidByte
Set by the Type 1 and Type 1 and 2 Libraries; it holds the actual byte
messageDone
Set by the Type 1 and Type 1 and 2 Libraries to indicate to the application (or
Type 1 and 2 Telephony Parser Library) that an FSK message is completed
messageLength
Set by the Type 1 and Type 1 and 2 Libraries to indicate the length of the FSK
message to the application
FrameErrors
Set by the Type 1 and Type 1 and 2 Telephony Features Libraries to indicate to
the application whether a framing error occurred during reception of the last FSK
message. This must be cleared by the application upon reception.
flashCommand
A message sent from the module to the application indicating that the line is to be
flashed according to flash polarity. This must be cleared by the application upon
reception.
Line is to be flashed = 1
Do nothing = 0
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flashPolarity
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Set by the module to indicate the polarity of the flash. When flashCommand is set,
go on-hook when the flashPolarity equals zero and go off-hook when
flashPolarity equals one.
Note: Do not change the hookSwitch variable when executing a flash.
cwdCommand
Set by the application to instruct the module to begin a Call Waiting Deluxe
pulse/dial. In Type 1, there are no Call Waiting Deluxe features supported, so this
variable is used only for a standard line flash.
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Do nothing = 0
Answer or standard flash = 10
disableRinger
Set by the application to disable the ring generator when on-hook
dtmfRequest
Set by the application when it requires the module to dial a DTMF digit
On = 1
Off = 0
dtmfDigit
The particular digit to be dialed. The possible entries range from integer values of
0 to 11, which correspond to the nine digits, *, and #, in that order.
dtmfComplete
Flag set by the module for the application’s information on completion of a single
DTMF request
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3.3 Specifications
The following sections describe the Type 1 Telephony Features Library functions.
Function arguments for each routine are described as in, out, or inout. An in argument means that the
parameter value is an input only to the function. An out argument means that the parameter value is an
output only from the functions. An inout argument means that a parameter value is an input to the function,
but the same parameter is also an output from the function.
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Typically, inout parameters are input pointer variables in which the caller passes the address of a
pre-allocated data structure to a function. The function stores its results within that data structure. The
actual value of the inout pointer parameter is not changed.
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Specifications
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3.3.1 Type1CIDcreate
Call(s):
cid_sData* Type1CIDcreate(teldef_tsControl *pControl);
Required Headers: teldefs.h, cid1.h
Arguments:
Table 3-1. Type1CIDcreate Arguments
in
Points to the structure where input and output control information is
stored
Description: The Type1CIDcreate function allocates the data memory structure and modulo buffer for the
Type1CID function, then calls the Type1CIDinit function. This function is to be called once before using
the Type1CID function. The prototype of this function is defined in cid1.h.
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pControl
Returns: The functionType1CIDcreate returns a pointer to the data structure.
Special Issues: None
Code Example: None
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3.3.2 Type1CIDdestroy
Call(s):
void Type1CIDdestroy (cid_sData *pData, teldef_tsControl *pControl);
Required Headers: teldefs.h, cid1.h
Arguments:
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Table 3-2. Type1CIDdestroy Arguments
pData
in
Points to the structure where FSK static data is stored
pControl
in
Points to the structure where input and output control information is
stored
Description: This function deallocates any memory that was used by the current Type1CID instance. The
prototype of the Type1CIDdestroy function is defined in cid1.h.
Returns: None
Special Issues: None
Code Example: None
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3.3.3 Type1CIDinit
Call(s):
void Type1CIDinit(cid_sData *pData, teldef_tsControl *pControl);
Required Headers: teldefs.h, cid1.h
Arguments:
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Table 3-3. Type1CIDinit Arguments
pData
inout
Points to the structure where FSK static data is stored
pControl
inout
Points to the structure where input and output control information is
stored
Description: The Type1CIDinit function initializes all of the constants, variables and counters contained
in the cid_sData structure for the Type1CID function. This function is to be called once before using the
function Type1CID. This action is performed by calling Type1CIDcreate function. The function
Type1CIDcreate should also be called when going on-hook or off-hook after changing the hookSwitch
variable. The prototype of this function is defined in cid1.h.
Returns: None
Special Issues: None
Code Example: None
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3.3.4 Type1CID
Call(s):
void Type1CID(cid_sData *pData, teldef_tsControl *pControl, teldef_tsSample
*pSample);
Required Headers: teldefs.h, cid1.h
Arguments:
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Table 3-4. Type1CID Arguments
pData
inout
Points to the structure where FSK static data is stored
pControl
inout
Points to the structure where input and output control information is
stored
pSample
inout
Points to the structure where the voice samples are stored
Description: The Type1CID function performs on-hook FSK reception. According to the control
information from its arguments, it enables the FSK receiver and passes the FSK to the upper layer process
to display the data. This function should be called 1600 times per second.
hookSwitch = 0 (on-hook):
•
•
•
pSample.line[] samples are inputs to this function and are decoded into data bytes when caller ID
is present
pSample.line[] samples are outputs from this function and are ringer generator samples when
ringing is present; otherwise, these samples are filled with zeros
pSample.audio[] samples are ignored and filled with zeros
hookSwitch = 1 (off-hook):
•
•
If handsFreeLayer1 is set, pSample.gec[] are copied into pSample.line[] samples; otherwise,
pSample.line[] samples are unchanged
If a DTMF digit has been requested by setting dtmfRequest, pSample.audio[] is filled with DTMF
samples; otherwise, pSample.audio[] samples are unchanged
Returns: None
Special Issues: None
Code Example: None
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Chapter 4
Building the Type 1 Telephony
Features Library
4.1 Building the Type 1 Telephony Features Library
The Type 1 Telephony Features Library combines all components described in the previous section into
one library: cid1.lib. The library is prebuilt for the user, so a project for building the library is not provided.
The library is located in the ...\telephony\cidtype1\lib directory of the SDK directory structure.
Figure 4-1 shows how the cid1.lib is linked to the Type 1 test project, cid1test.mcp. The header file,
teldefs.h, also must be linked when using the Type 1 library, cid1.lib.
.
Figure 4-1. Example of a cid1 Library Link to a Project
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Chapter 5
Linking Applications with the Type 1
Telephony Features Library
5.1 Type 1 Telephony Features Library
The Type 1 Telephony Features Library consists of an initialization and processing function. The Type 1
Library can be initialized and created by the Type1CIDinit and Type1CIDcreate functions. Their
functionality and arguments are described in Section 3.3.3 and Section 3.3.1. The library contains APIs,
which provide the interface between the user application and the Type 1 Library. To use the Type 1
Library, APIs must be called in the following order:
—
—
—
—
Type1CIDcreate(....);
Type1CIDdestroy(....);
Type1CIDinit(….);
Type1CID(….);
//The user must call this function once for every instance.
//The user must call this function to deallocate memory.
//The user must call this function for hook switch change.
//The user must call this function to display Caller ID in on-hook
state.
5.1.1 Library Sections
An example of the memory section for the Type 1 Telephony Features Library is shown in this section.
The data memory requirement for the Type 1 Telephony Features Library is 127 words. The size of the
program space requires 1.2Kwords. All program and data memory may reside in internal or external
memory. A dynamic memory section of at least 127 words plus 16 words aligned on a 16-word boundary
is required. All programs for this library are in the section cid1.text. An example linker.cmd file is shown
in Code Example 5-1.
The program and data memory for the Type 1 Telephony Features Library are in the FSK section. This text
and data section contains all the code and data necessary to execute the Type1CID function.
Code Example 5-1. Example of a linker.cmd File for Type 1 Telephony Features Library
#*******************************************************************************
#
# Linker.cmd file for DSP56858 External RAM
# using only external program and data memory.
#
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#*******************************************************************************
MEMORY {
(RWX)
(RWX)
(RWX)
(RX)
(RW)
(RW)
(RW)
(RW)
(RW)
(RW)
(RW)
(RW)
:
:
:
:
:
:
:
:
:
:
:
:
ORIGIN
ORIGIN
ORIGIN
ORIGIN
ORIGIN
ORIGIN
ORIGIN
ORIGIN
ORIGIN
ORIGIN
ORIGIN
ORIGIN
=
=
=
=
=
=
=
=
=
=
=
=
0x000000,
0x00008C,
0x00A000,
0x1F0000,
0x000000,
0x005000,
0x006000,
0x006800,
0x000000,
0x1FFC00,
0x200000,
0xFFFF00,
LENGTH
LENGTH
LENGTH
LENGTH
LENGTH
LENGTH
LENGTH
LENGTH
LENGTH
LENGTH
LENGTH
LENGTH
=
=
=
=
=
=
=
=
=
=
=
=
0x00008C
0x009F74
0x1E6000
0x000400
0x005000
0x001000
0x000800
0x001000
0x005000
0x000400
0xDFFF00
0x000100
}
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.pInterruptVector
.pIntRAM
.pExtRAM
.pIntROM
.xIntRAM
.xIntRAM_DynamicMem
.xStack
.xExtRAM_DynamicMem
.xExtRAM
.xPeripherals
.xExtRAM2
.xCoreRegisters
#*******************************************************************************
FORCE_ACTIVE {FconfigInterruptVector}
#*******************************************************************************
SECTIONS {
#*******************************************************************************
.ApplicationInterruptVector :
{
vector.c (.text)
} > .pInterruptVector
#*******************************************************************************
.ApplicationCode :
{
# Place all code into Program RAM
*
*
*
*
(.text)
(rtlib.text)
(fp_engine.text)
(user.text)
# Place all data into Program RAM
F_Pdata_start_addr_in_ROM = 0;
F_Pdata_start_addr_in_RAM = .;
pramdata.c (.data)
F_Pdata_ROMtoRAM_length = 0;
F_Pbss_start_addr = .;
_P_BSS_ADDR = .;
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pramdata.c (.bss)
F_Pbss_length = . - _P_BSS_ADDR;
} > .pExtRAM
#****************************************************************************
.CID1LibrayCode :
{
# Place cid1 code into Program Internal RAM
} > .pIntRAM
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* (cid1.text)
****************************************************************************
.ApplicationData :
{
# Define variables for C initialization code
F_Xdata_start_addr_in_ROM
F_StackAddr
F_StackEndAddr
F_Xdata_start_addr_in_RAM
=
=
=
=
.;
ADDR(.xStack);
ADDR(.xStack) + SIZEOF(.xStack) - 1;
.;
# Define variables for SDK mem library
# Data (X) Memory Layout
_EX_BIT
= 0;
# Internal Memory Partitions (for mem.h partitions)
_NUM_IM_PARTITIONS = 0;
# IM_ADDR_1 (no IM_ADDR_2 )
# External Memory Partition (for mem.h partitions)
_NUM_EM_PARTITIONS = 1;
# EM_ADDR_1
FmemEXbit = .;
WRITEH(_EX_BIT);
FmemNumIMpartitions = .;
WRITEH(_NUM_IM_PARTITIONS);
FmemNumEMpartitions = .;
WRITEH(_NUM_EM_PARTITIONS);
FmemIMpartitionList = .;
WRITEH(ADDR(.xIntRAM_DynamicMem)*1);
WRITEH(SIZEOF(.xIntRAM_DynamicMem)*1);
FmemEMpartitionList = .;
WRITEH(ADDR(.xExtRAM_DynamicMem)*1);
WRITEH(SIZEOF(.xExtRAM_DynamicMem)*1);
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# Add rest of the data into External RAM
*
*
*
*
(.const.data)
(.data)
(fp_state.data)
(rtlib.data)
F_Xdata_ROMtoRAM_length = 0;
F_Xbss_start_addr = .;
_X_BSS_ADDR = .;
F_Xbss_length = . - _X_BSS_ADDR;
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* (rtlib.bss.lo)
* (rtlib.bss)
* (.bss)
# Copy DATA
} > .xExtRAM
#****************************************************************************
FArchIO
FArchCore
FArchInterrupts
= 0x0000;
= ADDR(.xCoreRegisters);
= ADDR(.pInterruptVector);
}
5-4
Type 1 Telephony Features Library
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Chapter 6
Type 1 Telephony Features Library
Applications
6.1 Type 1 Verification Test
To verify the functionality of the Type 1 Telephony Features Library, an individual test application is
provided. The test processes the samples that are precaptured from a nominal FSK transmission. The
corresponding Caller ID will be printed on screen. The test application is located in the
...telephony\cidtype1\Test directory. The name of the test project is cid1test.mcp.
6.1.1 Test Set-up and Procedure
The test application runs in simulation and does not require external equipment. Before executing the test
application, the Target Setting Protocol must be selected in the Simulator. It can be set in Protocol option
in M56800 Target Settings.
The test project for Type 1 is cid1test.mcp. Before loading the executable project, the project must be
compiled with no errors. This is done by choosing the Make option in the Project menu or by pressing
[F7]. To load the executable project, choose the Debug option in the Project menu or press [F5].
To run the test application, use the mouse to choose the green arrow button or manually press [F5] on the
keyboard. After the application starts running, the application initializes and automatically processes the
precaptured samples.
The functionality of the Type 1 Telephony Features Library will be verified and a Caller ID message will
be printed on the console window. The application stops after completing the process and prints “PASS”
on the console window.
Should the application print “FAIL”, the Type 1 Telephony Features Library is not operating correctly.
This is not expected to happen for this test application; however, if it does, please report the failure and test
conditions to Motorola for resolution.
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6.2 Example Application Using cid1.lib
An example using the Type 1 Telephony Features Library to illustrate how to set the library variables for
Type1CID in the Control structure of teldefs.h is shown in Code Example 6-1. This code does not exist in
the actual cidtype1 directory in the SDK.
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Code Example 6-1. Use of Type1CID Interface
#include <stdio.h>
#include <stdlib.h>
#include "teldefs.h"
#include "cid1.h"
#include "mem.h"
#ifdef USEPARSER
#include "cidparser.h"
#endif
struct teldefs_tsSamples Line1Samples;
struct cid_tsData* pcid1Data;
struct teldefs_tsControl Line1Control;
#ifdef USEPARSER
teldefs_sParser ParserControl;
#endif
int main(void)
{
// Initialize some necessary structure elements and call create function
Line1Control.messageDone=0;
Line1Control.cidByteReady = 0;
Line1Control.ExtUseCheck=0;
Line1Control.NoExtFound=1;
Line1Control.FrameErrors=0;
Line1Control.dtmfRequest=0;
Line1Control.dtmfComplete=0;
Line1Control.hookSwitch = 0;
Line1Control.flashCommand = 0;
Line1Control.cwdCommand = 0;
pcid1Data = Type1CIDcreate(&Line1Control);
#ifdef USEPARSER
ParserControl.FskMessageIndex=0;
ParserControl.FskParserLength=0;
#endif
while(1) {
/* Wait for 5 8KHz samples to be received and transmitted by */
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Example Application Using cid1.lib
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/* the Codec Interrupt Service Routine. */
while(!SamplesReady){
;
}
CalleridAppMain();
/* do nothing */
}
Type1CIDDestroy(pcid1Data,&Line1Control);
void CalleridAppMain(){
int i;
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return 0;
}
/* copy samples from Codec buffers */
for( i = 0; i < 5 ; i++){
codecBufferLeftout[i] = Line1Samples.audio[i];
codecBufferRightout[i] = Line1Samples.line[i];
Line1Samples.line[i] = codecBufferLeftin[i];
Line1Samples.audio[i] = codecBufferRightin[i];
}
// Get Ring Signal from DAA
if( /* Poll Ring Detect Bit Here */ ){
Line1Control.cidRingPolarity = 1;
}
else{
Line1Control.cidRingPolarity = 0;
}
// Ring present
// Ring not present
// Call Type 1 Telephony Features Library
Type1CID(pcid1Data,&Line1Control,&Line1Samples);
// Process command for line flash
if(Line1Control.flashCommand){
Line1Control.flashCommand = 0;
if(Line1Control.flashPolarity == 1) go_offhook();
else go_onhook();
}
#ifdef USEPARSER
// Use Type 1 and 2 Telephony Parser Library
CIDMessageParser(&ParserControl, &Line1Control);
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if(ParserControl.FskParserLength != 0){
/* Parsed Message Ready. Send to Output Device */
if(ParserControl.ErrorType == 0){
for( i = 0 ; i < ParserControl.FskParserLength ; i++)
printf("%c",ParserControl.FskParserBuffer[i]);
}
ParserControl.FskParserLength=0;
}
#elseif
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// Use Custom Parser
if(Line1Control.cidByteReady){
/* Buffer cid bytes here*/
cid_message_buffer[cid_message_index++] = Line1Control.cidByte;
}
if (Line1Control.messageDone){
if(Line1Control.FrameErrors == 0){
/* Call custom Parser here */
}
else Line1Control.FrameErrors = 0;
}
#endif
}
Code Example 6-1 shows a basic application using the cid1.lib module. This module is designed to
interact with the Type 1 and 2 Telephony Parser Library (cidparser.lib); however, independent usage of
the cid1.lib module is supported. When implementing a full duplex speakerphone, the cid1.lib module is
intended to be used with the fdspk.lib and gec.lib modules; however, custom line echo canceller and full
duplex speakerphone software can also interface with the cid1.lib module.
This example shows how to manage Caller ID information using either the Type 1 and 2 Telephony Parser
Library or a custom parser. The defintion USEPARSER is undefined when a custom parser is desired.
When using a custom parser, the application must transfer the input bytes into a buffer, then process them.
When using the Type 1 and 2 Telephony Parser Library, this is done automatically.
While this module is primarily intended to be used for Caller ID reception, other convenient features are
added to allow for simple integration into a Caller ID telephone. While the module is in an on-hook state
(Line1Control.hookSwitch = 0), the line[] samples buffer will be filled with ring generator samples during
power ringing. Otherwise, the line[] samples will be filled with zeros. These samples may act as an output
to an audio channel (for example, to be played to a speaker).
While the module is in an off-hook state (Line1Control.hookSwitch = 1), the audio[] samples buffer will
be filled with DTMF samples when a DTMF digit is requested and will remain unchanged otherwise. The
line[] samples remain unchanged during the off-hook state, unless Line1Control.handsFreeLayer1 is set (a
condition which is not shown in this example). In this case, the gec[] samples will be copied to the line[]
samples structure.
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Example Application Using cid1.lib
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The gec[] samples can be obtained by using the gec.lib module, or by using a separate custom echo
canceller. The audio[] samples will be modified by the fdspk.lib module (or custom full duplex
speakerphone software) in this case. See the description of these modules and FeaturePhone application for
more detailed information.
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In this example, there are two GPIO pins; one output pin, which places the telephone interface on-hook or
off-hook, and one input pin, which indicates the ring detect from the the telephone interface. The ring
detect pin is polled in the application and its polarity is placed in the variable
Line1Control.cidRingPolarity. This information is necessary for the Type 1 Telephony Features Library,
even when disableRinger is set (disabling the ring tone generator) and should be polled at a rate of
1600/sec as shown in the application. However, slower polling rates may be tolerated.
It is assumed that the functions go_onhook() and go_offhook(), which are not shown in Code
Example 6-1, would simply set or clear the output pin connected to the telephone interface. However, note
that these are not the same as when the application actually puts the module into an on-hook or off-hook
state. In this situation, the application must also set or clear the Line1Control.hookSwitch variable and then
call Type1CIDinit().
The Codec Interrupt Service Routine is also not shown in this example. This routine is assumed to transmit
and receive 8KHz samples from a codec and read/write to the buffers codecBufferLeftin[] and
codecBufferLeftout[]. This codec is connected to the telephone line interface. This routine is also assumed
to transmit and receive 8KHz samples from a codec and read/write to the buffers codecBufferRightin[] and
codecBufferRightout[]. This codec is connected to an audio interface. When the ISR has
received/transmitted five samples, the buffers are full/empty and the SamplesReady flag is set, indicating
to the application that it should call CalleridAppMain(). The calling rate of this routine should be 1600
calls/second.
In the beginning of the CalleridAppMain() routine, the codec samples are copied into the module’s sample
structure. Note that for the output samples, the line[] samples are copied into the right (audio) codec
channel, and the audio[] samples are copied into the left (line) codec channel. This sample "criss-cross" is
indicative of the natural signal flow for a telephone.
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6-6
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7.1 Limited Use License Agreement
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Chapter 7
License
This software is available under a separate license agreement from Motorola Incorporated.
Licensing information can be obtained from your Motorola sales representative or authorized
distributor.
For additional product information, see http://www.motorola.com/semiconductors/.
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License
Freescale Semiconductor, Inc.
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7-2
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Index
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Freescale Semiconductor, Inc...
A
ADC x, 1-3, 1-4
AGC xi
American Standard Code for Information Interchange
ASCII xi, 3-1
Analog-to-Digital Converter
ADC x, 1-3, 1-4
API xi, 5-1
appconfig.c 2-3
appconfig.h 2-3
Application Programming Interface
API xi, 5-1
ASCII xi, 3-1
Attenuation Distortion 1-3
Automatic Gain Control
AGC xi
B
E
Embedded SDK Programmer’s Guide xi
F
Frequency Response 1-3
Frequency Shift Keying
FSK xi, 1-2, 3-1
FSK xi, 1-2, 3-1
G
G.726 2-2
G.728 2-2
GR-1188-CORE, LSSGR CLASS Feature
Calling Name Delivery Generic Requirements xi
GR-1401-CORE, LSSGR CLASS Feature
Visual Message Waiting Indicator Generic
Requirements xii
GR-30-CORE 1-2
GR-30-CORE, LSSGR
Voiceband Data Transmission Interface xi
GR-31-CORE, LSSGR CLASS Feature
Calling Number Delivery xi
Bandpass Filter
BPF xi
BPF xi
C
Call Qualifier
CQ xi, 1-2
Call Waiting Deluxe 3-5
Caller ID 1-2, 3-1
CID xi
Calling Name Delivery 1-2
Calling Number Delivery 1-2
CID xi
cid1.h 3-3
cid1.lib 2-3, 4-1, 6-2
cid1test.mcp 2-3, 4-1, 6-1
CPE xi, 1-2
CQ xi, 1-2
Customer Premises Equipment
CPE xi, 1-2
I
IDE xi
Integrated Development Environment
IDE xi
ITU-T Recommendation V.23 xii, 1-2
L
D
DAA xi, 1-3
Data Access Arrangement
DAA xi, 1-3
Digital Signal Processor
DSP xi, 1-1
DSP xi, 1-1
DSP56800E Reference Manual xi
MOTOROLA
DSP56858EVM 2-1
DSP56858EVM board 1-3
DSP5685x User’s Manual xi
DTMF xi
Dual Tone Multiple Frequency
DTMF xi
linker.cmd 2-3, 5-1
Low Pass Filter
LPF xi
LPF xi
M
MDMF xi, 1-2
memory and MIPS requirements 1-5
Million Instructions Per Second
MIPS xi
Index
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i
Freescale Semiconductor, Inc.
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V
MIPS xi
Multiple Data Message Format
MDMF xi, 1-2
Visual Message Waiting Indicator
VMWI xi, 1-2, 3-1
VMWI xi, 1-2, 3-1
Voice band Data Transmission Interface 1-2
O
OnCE xi
On-Chip Emulation
OnCE xi
Open Switching Interval
OSI xi, 1-3
OSI xi, 1-3
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P
PC xi
PCM xi
Personal Computer
PC xi
PSTN xi, 1-2
Public Switched Telephone Network
PSTN xi, 1-2
Pulse Code Modulation
PCM xi
S
SDK xi, 1-1
SDMF xi, 1-2
Single Data Message Format
SDMF xi, 1-2
Software Development Kit
SDK xi, 1-1
Source
SRC xi
SR-3004, Testing Guidelines for Analog Type 1, 2, and
3 CPE xi
SRC xi
T
Targeting Motorola DSP5685x User’s Manual xi
Telcordia SR-3004 1-2, 3-1
teldefs.h 3-1, 4-1, 6-2
Twist 1-2
Type 1 Telephony Features Library 1-1
Type 1 Test Project 4-1
Type1CID 5-1, 6-2
Type1CID.lib 3-1
Type1CIDcreate 5-1
Type1CIDdestroy 5-1
Type1CIDinit 5-1
ii
Type 1 Telephony Features Library
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Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the
suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including
“Typicals” must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the
rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and the Stylized M Logo are registered trademarks of Motorola, Inc. Motorola,
Inc. is an Equal Opportunity/Affirmative Action Employer.
MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. All other product or service names are the property of their
respective owners. © Motorola, Inc. 2002.
How to reach us:
USA/EUROPE/Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 1–303–675–2140 or 1–800–441–2447
JAPAN: Motorola Japan Ltd.; SPS, Technical Information Center, 3–20–1, Minami–Azabu. Minato–ku, Tokyo 106–8573 Japan. 81–3–3440–3569
ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong. 852–26668334
Technical Information Center: 1–800–521–6274
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SDK135/D