Fujitsu Semiconductor Design (Chengdu) Co., Ltd.
Application Note
MCU-AN-510110-E-10
32-BIT MICROCONTROLLER
MB9AA30N SERIES
BLUEMOON-EVB_TSC.LIB
APPLICATION NOTE
ARM and Cortex-M3 are the trademarks of ARM Limited in the EU and other countries.
Bluemoon-EVB_TSC.LIB V1.0.0
Revision History
Revision History
Version
Date
Updated by
1.0.0
2012-10-30
Abel Ma
Approved by
Modifications
First Draft
This manual contains 22 pages.
Specifications are subject to change without notice. For further information please contact each office.
All Rights Reserved.
The contents of this document are subject to change without notice.
Customers are advised to consult with sales representatives before ordering.
The information, such as descriptions of function and application circuit examples, in this document are presented solely
for the purpose of reference to show examples of operations and uses of FUJITSU SEMICONDUCTOR device; FUJITSU
SEMICONDUCTOR does not warrant proper operation of the device with respect to use based on such information. When
you develop equipment incorporating the device based on such information, you must assume any responsibility arising
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Any information in this document, including descriptions of function and schematic diagrams, shall not be construed as
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including without limitation, ordinary industrial use, general office use, personal use, and household use, but are not
designed, developed and manufactured as contemplated (1) for use accompanying fatal risks or dangers that, unless
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Please note that FUJITSU SEMICONDUCTOR will not be liable against you and/or any third party for any claims or
damages arising in connection with above-mentioned uses of the products.
Any semiconductor devices have an inherent chance of failure. You must protect against injury, damage or loss from such
failures by incorporating safety design measures into your facility and equipment such as redundancy, fire protection, and
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Exportation/release of any products described in this document may require necessary procedures in accordance with the
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The company names and brand names herein are the trademarks or registered trademarks of their respective owners.
Copyright © 2012 Fujitsu Semiconductor Design (Chengdu) Co., Ltd. All rights reserved.
MCU-AN-510110-E-10 – Page 2
Bluemoon-EVB_TSC V1.0.0
Contents
Contents
REVISION HISTORY ............................................................................................................ 2
CONTENTS .......................................................................................................................... 3
1 INTRODUCTION .............................................................................................................. 4
1.1
Purpose ................................................................................................................... 4
1.2
Document Overview ................................................................................................ 4
2 TSC PRINCIPLE .............................................................................................................. 5
3 TSC LIBRARY ................................................................................................................. 7
3.1
Library Overview ..................................................................................................... 7
3.2
Parameters Setup ................................................................................................... 9
3.3
3.4
3.2.1
Port and Pin define .................................................................................... 9
3.2.2
Sample Parameters setup ....................................................................... 10
3.2.3
Structure Type Define .............................................................................. 11
Application Interface .............................................................................................. 12
3.3.1
TSCKey_Init(uint8_t) ............................................................................... 12
3.3.2
TSCKey_SampleUnit(uint32_t) ................................................................ 12
3.3.3
TSCKey_Filter(uint8_t, uint8_t) ................................................................ 12
3.3.4
uint32_t TSCKey_GetValue(uint8_t) ....................................................... 12
3.3.5
uint8_t TSCKey_UpdateBaseline(uint8_t) ............................................... 13
How to Add Fujitsu TSC_LIB.a .............................................................................. 14
3.4.1
Add Fujitsu TSC_GPIO.lib to User’s Project ............................................ 14
3.4.2
Include Header File.................................................................................. 16
4 LIB USAGE NOTICE ..................................................................................................... 17
5 ADDITIONAL INFORMATION ....................................................................................... 18
1 APPENDIX ..................................................................................................................... 19
1.1
List of Figures and Tables ..................................................................................... 19
1.2
Sample Code ........................................................................................................ 20
1.2.1
Main Function .......................................................................................... 20
MCU-AN-510110-E-10 – Page 3
Bluemoon-EVB_TSC.LIB V1.0.0
Chapter 1 Introduction
1
Introduction
1.1
Purpose
This application note describes FUJITSU TSC_LIB library, which is based on latest
Capacitance Touch Sensor (TSC) GPIO algorithm. Added to that is the descriptions of how
to use TSC_LIB library and some notices.
This TSC_LIB.a library is used in IAR development environment.
1.2
Document Overview
The rest of document is organized as the following:
Chapter 2 describes TSC Principle.
Chapter 3 describes TSC Library.
Chapter 4 describes LIB Usage Notice.
MCU-AN-510110-E-10 – Page 4
Bluemoon-EVB_TSC V1.0.0
Chapter 2 TSC Principle
2 TSC Principle
This chapter introduces working principles of GPIO solution.
The theory of capacitance touch sensor is to check capacitance increment. As follows, when
finger not touch the
(2.1)
While the pad is touching, equation become
(2.2)
Where the increment is ΔC = CF.
Finger
CF
CP
Figure 2-1: Diagram of Capacitance Touch Sensor Theory
According to the characteristics of capacitor, the deposited charge of capacitor increases
along with the increase of capacitance.
FUJITSU uses GPIO method to check the capacitance change.
VCC
Pull up
resistor
MCU
Filter
resistor
GPIO-pin
Figure 2-2: Diagram of GPIO algorithm
MCU-AN-510110-E-10 – Page 5
Bluemoon-EVB_TSC.LIB V1.0.0
Chapter 2 TSC Principle
The method includes the following steps:
1. Set pin to high impedance to charge the pad;
2. Begin counter accumulation;
3. Wait until the pad is charged;
4. Set pin to ‘L’ to discharge the pad;
5. Wait until the pad is discharged;
6. Save counter value;
7. Sample number decrease;
8. If sample number isn’t zero, start next sample loop;
9. If sample number is zero, calculate sum of counter, finish sample;
Flowchart and hardware connection are shown in Figure 2-3 and Figure 2-4.
Start
Charge the pad
Counter accumulation
Wait padcharged
N
Y
Discharge the pad
Counter accumulation
Wait paddischarged
N
Y
Sample number decrease
N
If sampling
number is zero?
Y
Calculate sum of counter
End
Figure 2-3: Check Flowchart
Figure 2-4: Hardware Connection
MCU-AN-510110-E-10 – Page 6
Bluemoon-EVB_TSC V1.0.0
Chapter 3 TSC Library
3 TSC Library
This chapter introduces how to use TSC library.
3.1
Library Overview
There are parameters which user need to setup, and 4 functions as API for user’s situations.
All the parameters and functions are introduced as follow.
Table 3-1: Parameters List
Name
Description
Remarks
TSCKEY_KEYNUM
Total TSC key number
N/A
TSCKEY_SampleNumConst
Sample number
N/A
TSCKEY_BUTTONX_USED
Decide if TSC key Button X will be Used
N/A
TSCKEY_BUTTONX_DATA_IN
TSC key X pin data in
N/A
TSCKEY_BUTTONX_DATA_OUT
TSC key X pin data out
N/A
TSCKEY_BUTTONX_DIR
TSC key X pin dir in
N/A
TSCKEY_BUTTONX_PULL_UP
TSC key X pin pull up
N/A
TSCKEY_BUTTONX_PFR
TSC key X pin PFR
N/A
TSCKEY_BUTTONX_PORT
TSC key X port
N/A
TSCKEY_BUTTONX_PIN
TSC key X pin
N/A
TSCKEY_OffsetLX
Offset Const Level X for individual keys
N/A
TSC_TIMER_INITITAL_VALUE
Timer load value register
N/A
TSC_TIMER_COUNT_VALUE
Timer current value register
N/A
TSC_TIMER_START
Enable timer
N/A
TSC_TIMER_STOP
Disable time
N/A
Basline_Const
Used TSC baseline update
N/A
Key_Const
TSC key information
N/A
TSC_KeyOffset
Each individual key offset const
N/A
TSC_Baseline
Each key current baseline information
N/A
TSCKEY_SubAvgShiftConst
Sub driver layer average shift const
N/A
TSCKEY_AvoidErrorConst
Avoid mistake in initialize process
N/A
TSCKEY_NoiseOffsetConst
Avoid mistake in initialize process
N/A
TSCKEY_DeltaBucketThrConst
Delta value threshold const
N/A
TSCKEY_PercentSumConst
Sum const of all keys
N/A
TSCKEY_MinificationConst
Base line value minificate const
N/A
TSCKEY_BalnUpdateConst
Base line update counter const
N/A
TSCKEY_AmpShiftConst
Amplify shift const
N/A
MCU-AN-510110-E-10 – Page 7
Bluemoon-EVB_TSC.LIB V1.0.0
Chapter 3 TSC Library
Table 3-2: Functions List
Prototype
Function Description
Remarks
void TSCKey_Init(uint8_t Key_Num)
Initialize TSC module
N/A
void TSCKey_SampleUnit(uint32_t
TSCKEY_SampleNum)
Bottom layer sample unit of TSC.
N/A
void TSCKey_Filter(uint8_t Key_Num, uint8_t
Order_Shift)
Filter function of TSC sample value
N/A
uint32_t TSCKey_GetValue(uint8_t Key_Num)
Judgment touch status and coding key value
N/A
uint8_t TSCKey_UpdateBaseline(uint8_t Key_Num)
TSC key update baseline
N/A
MCU-AN-510110-E-10 – Page 8
Bluemoon-EVB_TSC V1.0.0
Chapter 3 TSC Library
3.2
Parameters Setup
3.2.1 Port and Pin define
The related hardware define:
#define TSCKEY_BUTTON0_USED
Used */
TRUE
/*
Decide
if
TSCKEY
Button0
will
be
#define TSCKEY_BUTTON1_USED
Used */
FALSE
/*
Decide
if
TSCKEY
Button1
will
be
#define TSCKEY_BUTTON2_USED
Used */
FALSE
/*
Decide
if
TSCKEY
Button2
will
be
#define TSCKEY_BUTTON3_USED
Used */
FALSE
/*
Decide
if
TSCKEY
Button3
will
be
#define TSCKEY_BUTTON0_DATA_IN
bFM3_GPIO_PDIR1_P5/* TSC Key pin data in*/
#define TSCKEY_BUTTON1_DATA_IN
bFM3_GPIO_PDIR4_P6/* TSC Key pin data in*/
#define TSCKEY_BUTTON2_DATA_IN
bFM3_GPIO_PDIR3_PF/* TSC Key pin data in*/
#define TSCKEY_BUTTON3_DATA_IN
bFM3_GPIO_PDIR3_PE/* TSC Key pin data in*/
#define TSCKEY_BUTTON0_DATA_OUT
bFM3_GPIO_PDOR1_P5 /* TSC Key pin data out*/
#define TSCKEY_BUTTON1_DATA_OUT
bFM3_GPIO_PDOR4_P6 /* TSC Key pin data out*/
#define TSCKEY_BUTTON2_DATA_OUT
bFM3_GPIO_PDOR3_PF/* TSC Key pin data out*/
#define TSCKEY_BUTTON3_DATA_OUT
bFM3_GPIO_PDOR3_PE /* TSC Key pin data out*/
#define TSCKEY_BUTTON0_DIR
in*/
bFM3_GPIO_DDR1_P5 /* TSC Key pin dir
#define TSCKEY_BUTTON1_DIR
in*/
bFM3_GPIO_DDR4_P6 /* TSC Key pin dir
#define TSCKEY_BUTTON2_DIR
in*/
bFM3_GPIO_DDR3_PF /* TSC Key pin dir
#define TSCKEY_BUTTON3_DIR
in*/
bFM3_GPIO_DDR3_PE /* TSC Key pin dir
#define TSCKEY_BUTTON0_PULL_UP
bFM3_GPIO_PCR1_P5 /* TSC Key pin pull up*/
#define TSCKEY_BUTTON1_PULL_UP
bFM3_GPIO_PCR4_P6 /* TSC Key pin pull up*/
#define TSCKEY_BUTTON2_PULL_UP
bFM3_GPIO_PCR3_PF /* TSC Key pin pull up*/
#define TSCKEY_BUTTON3_PULL_UP
bFM3_GPIO_PCR3_PE /* TSC Key pin pull up*/
#define TSCKEY_BUTTON0_PFR
bFM3_GPIO_PFR1_P5 /* TSC Key pin PFR*/
#define TSCKEY_BUTTON1_PFR
bFM3_GPIO_PFR4_P6 /* TSC Key pin PFR*/
#define TSCKEY_BUTTON2_PFR
bFM3_GPIO_PFR3_PF /* TSC Key pin PFR*/
#define TSCKEY_BUTTON3_PFR
bFM3_GPIO_PFR3_PE /* TSC Key pin PFR*/
#define TSCKEY_BUTTON0_PORT
PORT_1 /* TSC Key port*/
#define TSCKEY_BUTTON1_PORT
PORT_4 /* TSC Key port*/
#define TSCKEY_BUTTON2_PORT
PORT_3 /* TSC Key port*/
#define TSCKEY_BUTTON3_PORT
PORT_3 /* TSCKey port*/
#define TSCKEY_BUTTON0_PIN
PIN_5 /* TSC Key pin */
#define TSCKEY_BUTTON1_PIN
PIN_6 /* TSC Key pin */
#define TSCKEY_BUTTON2_PIN
PIN_15 /* TSC Key pin */
#define TSCKEY_BUTTON3_PIN
PIN_14 /* TSC Key pin */
MCU-AN-510110-E-10 – Page 9
Bluemoon-EVB_TSC.LIB V1.0.0
Chapter 3 TSC Library
3.2.2 Sample Parameters setup
The parameters:
#define TSC_TIMER_INITITAL_VALUE FM3_BT3_RT->PCSR
// Timer load value register
#define TSC_TIMER_COUNT_VALUE
FM3_BT3_RT->TMR
// Timer current value register
#define TSC_TIMER_TMCR
FM3_BT3_RT->TMCR
// Timer control1 register
#define TSC_TIMER_TMCR2
FM3_BT3_RT->TMCR2
// Timer control2 register
#define TSC_TIMER_STC
FM3_BT3_RT->STC
// Timer status control register
#define TSC_TIMER_CTR
TSC_TIMER_TMCR
// Timer load value register
#define TSC_TIMER_START
#define TSC_TIMER_STOP
#define TSCTIMEINITVAL
(TSC_TIMER_CTR | (3))
(TSC_TIMER_CTR & (~3))
// Enable Timer
// Disable Timer
0xFFFF
#define TSCKEY_MinificationEnable
FALSE
//Decide if need minification of
baseline value
#define TSCKEY_IIRShiftConstL1
1
// Shift Const Level 0 for IIR filter
#define TSCKEY_IIRNumConstL1
2 << TSCKEY_IIRShiftConstL1
// Number of
Shift Times Const Level 0 for IIR filter
#define TSCKEY_IIRShiftConstL2
2
// Shift Const Level 1 for IIR filter
#define TSCKEY_IIRNumConstL2
2 << TSCKEY_IIRShiftConstL2
// Number of
Shift Times Const Level 1 for IIR filter
#define TSCKEY_IIRShiftConstL3
3
//Shift Const Level 2 for IIR filter
#define TSCKEY_IIRNumConstL3
2 << TSCKEY_IIRShiftConstL3
// Number of
Shift Times Const Level 2 for IIR filter
#define TSCKEY_IIRShiftConstL4
5
#define TSCKEY_IIRNumConstL4
2 << TSCKEY_IIRShiftConstL4
// Shift Const Level 3 for IIR filter
// Number of
Shift Times Const Level 3 for IIR filter
#define TSCKEY_OffsetL0
10
// Offset Const Level 0 for individual keys
#define TSCKEY_OffsetL1
10
// Offset Const Level 1 for individual keys
#define TSCKEY_OffsetL2
10
// Offset Const Level 2 for individual keys
#define TSCKEY_OffsetL3
10
// Offset Const Level 3 for individual keys
#define TSCKEY_SubAvgShiftConst
1
//Sub driver layer average shift const
#define TSCKEY_AvoidErrorConst
300
// Avoid mistake in initialize process
#define TSCKEY_NoiseOffsetConst
100
// Avoid mistake in initialize process
#define TSCKEY_DeltaBucketThrConst 50
// Delta value threshold const
#define TSCKEY_PercentSumConst
// Sum const of all keys
400
#define TSCKEY_MinificationConst 3
// Baseline value minificate const
#define TSCKEY_BalnUpdateConst
1
// Baseline update counter const
#define TSCKEY_AmpShiftConst
1
// Amplify shift const
Used to configure the sample number, threshold, and timer initial value.
MCU-AN-510110-E-10 – Page 10
Bluemoon-EVB_TSC V1.0.0
Chapter 3 TSC Library
3.2.3 Structure Type Define
Each TSC Key has 4 attributes: original value, filtered value, noise threshold and difference
percent value.
typedef struct
{
uint32_t
OriginValue;
/* Contains the original value */
uint32_t
Value;
/* Contains the count value */
uint32_t
NoiseThreshold;
/* Contains the key threshold level */
uint32_t
Percent;
/* Contains the value percent */
} Key_Const;
User can define new key directly using the following structure.
typedef struct
{
uint32_t
Value;
/* Contains the current baseline value */
int32_t
DeltaBucket;
/* Contains the key threshold level */
} Basline_Const;
MCU-AN-510110-E-10 – Page 11
Bluemoon-EVB_TSC.LIB V1.0.0
Chapter 3 TSC Library
3.3
Application Interface
All the functions supplied by the TSC_GPIO.lib will be introduced below, include the function
prototype, input parameter(s), return value(s), and the function description.
3.3.1 TSCKey_Init(uint8_t)
Prototype
void TSCKey_Init(uint8_t Key_Num)
Parameter:
Key_Num:
Return
void
Description
Initialize LCD module
1. Disables analog function of TSC pin.
2. Initialize counter
3. Initialize pin status to discharge TSC pad
4. Get baseline and noise threshold
5. Initialize used flag
N/A
Remark
Indication the number of touch keys need initialization
3.3.2 TSCKey_SampleUnit(uint32_t)
Prototype
void TSCKey_SampleUnit(uint32_t TSCKEY_SampleNum)
Parameter:
TSCKEY_SampleNum:
Return
void
Description
Bottom layer sample unit of TSC.
Remark
N/A
Indication sample number
3.3.3 TSCKey_Filter(uint8_t, uint8_t)
Prototype
Parameter:
void TSCKey_Filter(uint8_t Key_Num, uint8_t Order_Shift)
Key_Num:
Indication the number of touch keys need filter
Return
Order_Shift:
void
Indication the shift number of order for filter
Description
Filter function of TSC sample value
Remark
N/A
3.3.4 uint32_t TSCKey_GetValue(uint8_t)
Prototype
uint32_t TSCKey_GetValue(uint8_t Key_Num)
Parameter:
Key_Num:
Return
Key word of individual keys in lower byte; Slide position of slider in upper byte
Description
Judgment touch status and coding key value
Remark
N/A
Indication the number of touch keys need filter
MCU-AN-510110-E-10 – Page 12
Bluemoon-EVB_TSC V1.0.0
Chapter 3 TSC Library
3.3.5 uint8_t TSCKey_UpdateBaseline(uint8_t)
Prototype
uint8_t TSCKey_UpdateBaseline(uint8_t Key_Num)
Parameter:
Key_Num:
Return
Runs status
Description
TSC key update baseline
Remark
N/A
Indication the number of touch keys need filter
MCU-AN-510110-E-10 – Page 13
Bluemoon-EVB_TSC.LIB V1.0.0
Chapter 3 TSC Library
3.4
How to Add Fujitsu TSC_LIB.a
3.4.1 Add Fujitsu TSC_GPIO.lib to User’s Project
1. In IAR project, Right click on workspace select Add Files from the menu Add.
Figure 3-1: Add member to folder
2. In Add Member dialog box, select ‘ALL Files’ from ‘Files of Type’, and then you will
find the TSC_LIB.a
Figure 3-2: Found the lib file
MCU-AN-510110-E-10 – Page 14
Bluemoon-EVB_TSC V1.0.0
Chapter 3 TSC Library
3. Double click TSC_LIB.a, and then you can see it has been added in the folder
Include Files
Figure 3-3: Add TSC.lib
MCU-AN-510110-E-10 – Page 15
Bluemoon-EVB_TSC.LIB V1.0.0
Chapter 3 TSC Library
3.4.2 Include Header File
1. Add "#include "tsc.h "" in header file, such as in "main.h ".
Figure 3-4: Add include statement in C file
2. Compile the whole project, "tsc.h" will link TSC_LIB.a to c file, so that user program can
use API functions in TSC_LIB.a.
MCU-AN-510110-E-10 – Page 16
Bluemoon-EVB_TSC V1.0.0
Chapter 4 LIB Usage Notice
4 LIB Usage Notice
This chapter introduces LIB usage notice.
Machine clock
The machine clock should be set to 8M or above. If the machine clock is less than 8M, the
sensor response is slow.
Interrupt
When calling TSC_LIB.a library API functions, the all MCU interrupt will disable. After calling
these functions, the MCU will resume all interrupt as ago.
#define DisAllInterrupt()
__asm("CPSID I")
//Disable all interrupt
#define EnAllInterrupt()
__asm("CPSIE I")
//Enable all interrupt
TSC initialization
When initialization the TSC (i.e., when calling the TSCKey_Init function), user can’t touch the
TSC key.
MCU-AN-510110-E-10 – Page 17
Bluemoon-EVB_TSC.LIB V1.0.0
Chapter 5 Additional Information
5 Additional Information
For more Information on FUJITSU semiconductor products, visit the following websites:
English version address:
http://www.fujitsu.com/cn/fsp/services/mcu/32bit/fm3/an.html
Chinese version address:
http://www.fujitsu.com/cn/fss/services/mcu/32bit/fm3/an.html
MCU-AN-510110-E-10 – Page 18
Bluemoon-EVB_TSC V1.0.0
Chapter 1 Appendix
1 Appendix
1.1
List of Figures and Tables
Table 3-1: Parameters List ..................................................................................................... 7
Table 3-2: Functions List ........................................................................................................ 8
Figure 2-1: Diagram of Capacitance Touch Sensor Theory .................................................... 5
Figure 2-2: Diagram of GPIO algorithm .................................................................................. 5
Figure 2-3: Check Flowchart .................................................................................................. 6
Figure 2-4: Hardware Connection .......................................................................................... 6
Figure 3-1: Add member to folder......................................................................................... 14
Figure 3-2: Found the lib file................................................................................................. 14
Figure 3-3: Add TSC.lib........................................................................................................ 15
Figure 3-4: Add include statement in C file ........................................................................... 16
MCU-AN-510110-E-10 – Page 19
Bluemoon-EVB_TSC.LIB V1.0.0
Chapter 1 Appendix
1.2
Sample Code
1.2.1 Main Function
Name: Main Function
Function: Initialize and configure.
main.c
//*************************************************************************************************************************
// FUNCTION:
// Init the system
// PARAMETERS:
// RETURN:
// none:
//*************************************************************************************************************************
void Sys_Init(void)
{
SetAllGpioOutH();
// Set the not used GPIO H level to reduce the power consume in normal mode
InitRTC(0x0);
// Initialize RTC
Lvd_Init();
// LVD initialization, detection voltage 4V, LVD interrupt
CommonDvc_Int();
// Init common device, eg: LCD backlight, Beep, LED
BT0ReloadTimer_Init();
// Init and start BT0
//Test-self the device
BeepOn();
LcdBackOn();
LedTscOn();
LedWorkOn();
Delay_ms(20);
LCD_Init();
// Init LCD
ShowPage1();
Delay_ms(400);
BeepOff();
LedTscOff();
LedWorkOff();
InitADC();
// Initialize ADC
gMon_1SecFlag = 0;
gMon_CurTemp = 0;
gMon_CaliStep = 0;
ADC12_ScanStart(ADCUnit, ADC12_SCAN_MODE_CONTINUE); // Start ADC for first temperature
sampling
Delay_ms(2500);
TSCKey_Init(TSCKEY_KEYNUM);
// Initialise TSC Key
}
MCU-AN-510110-E-10 – Page 20
Bluemoon-EVB_TSC V1.0.0
Chapter 1 Appendix
/**
******************************************************************************
** \brief Main function of project for MB9AA30 series.
**
** \param none
** \return uint32_t return value, if needed
******************************************************************************/
int32_t main(void)
{
Sys_Init();
// Init the system
while(1)
{
StatusServeRun();
// Led indication the system run status
KeyScanf();
// Scan the key and Joystick
KeyTouchServe();
// Have a key, Led and Beep indication
DispModeServe();
// LCD display, normal mode and key down mode
if ( (MechKeyId == 0x1) && (TscKeyId == 0x1) && (JoyKeyId != JoyNot) ) // Enter min system test mode
{
MinSysCurTest();
}
if ((MechKeyId == 0x1) && (JoyKeyId == JoyOk) && (TscKeyId == 0x0))
{
RtcModeSet();
// Setting time & date mode
}
if ((TscKeyId == 0x1) && (MechKeyId == 0x1) && (JoyKeyId == JoyNot))
{
EnterLowerPowerModeProcess();
// Enter standby stop mode
}
if (((LastJoyKeyId != JoyNot) && (JoyKeyId != JoyNot)) || (TscKeyId == 0x1)) // Normal mode, has a key?
{
KeyDown = 0x1;
// Beep and led indication
KeyDownCnt = 0x0;
// Clean the counter
DisplayMode = 0x1;
// Enter key display mode
TouchModeCnt = 0x0;
// Clean the counter
TscKeyId = 0x0;
}
TscKeyScanf();
// Judging has a TSC key
TSCKey_UpdateBaseline(TSCKEY_KEYNUM);
// Update the TSC base line
if(TempSmplFinished == 1)
// Temperature sample finishes?
{
TempSmplFinished = 0;
GetCurTemp(&gMon_CurTemp);
gMon_CaliStep = CaliProcess(gMon_CurTemp);
}
MCU-AN-510110-E-10 – Page 21
Bluemoon-EVB_TSC.LIB V1.0.0
Chapter 1 Appendix
if ( PowerSupplyCnt >= POWER_SUPPLY_TIME )
// Power judging, different supply voltage
{
PowerSupply = 0x1;
PowerSupplyCnt = 0x0;
Lvd_Init();
// LVD initialization, detection voltage 4V, LVD interrupt
Delay_ms(5);
if ( PowerSupplyLast != PowerSupply )
{
LCD_Init();
// Supply power chagned, then Init LCD
}
}
}
}
MCU-AN-510110-E-10 – Page 22