AN205275
F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
This application note describes how to use the 8/16-bit composite timer in various modes. The application note gives
the features and some examples on the 8/16-bit composite timer.
Contents
1
2
3
1
Introduction ..................................................................1
The 8/16-Bit Composite Timer .....................................2
2.1 Key Features.......................................................2
2.2 Block Diagram.....................................................2
2.3 Registers .............................................................3
2.4 Operating Modes ................................................4
Operations and Examples ...........................................5
3.1 Operation
of
Interval
Timer
Function
(One-shot Mode) .........................................................5
3.2 Operation
of
Interval
Timer
Function
(Continuous Mode) ......................................................7
3.3 Operation Description of Interval Timer Function
(Free-run Mode) ..........................................................9
3.4 Operation
of
PWM
Timer
Function
(Fixed-cycle Mode) .................................................... 12
3.5 Operation
of
PWM
Timer
Function
(Variable-cycle Mode)................................................ 14
3.6 Operation of PWC Timer Function .................... 16
3.7 Operation of the Input Capture Function ........... 18
4 Notes on Using 8/16-bit Composite Timer ................. 20
5 Appendix ................................................................... 20
5.1 Sample Code .................................................... 20
6 Additional Information ................................................ 31
Document History............................................................ 32
Introduction
This application note describes how to use the 8/16-bit composite timer in various modes.
The application note gives the features and some examples on the 8/16-bit composite timer.
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Document No. 002-05275 Rev. *A
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
2
The 8/16-Bit Composite Timer
This chapter introduces the basic functions of the 8/16-bit composite timer
2.1
Key Features
The 8/16-bit composite timer consists of two 8-bit counters, which can be used as two 8-bit timers, or as one 16-bit
timer if they are connected in cascade.
The 8/16-bit composite timer has the following functions:
2.2
Interval timer function
PWM timer function
PWC timer function (pulse width measurement)
Input capture function
Block Diagram
Figure 1 shows the internal block diagram of the 8/16-bit composite timer.
Figure 1. 8/16-bit Composite Timer Block Diagram
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
2.3
Registers
Please refer to Chapter 14 of the MB95200H/210H Series Hardware Manual for detailed register setting.
2.3.1
8/16-bit Composite Timer 00/01 Control Status Register 0 (T00CR0/T01CR0)
This register is used to select the timer operating mode, select the count clock, and enable or disable IF flag
interrupts. Register T00CR0 corresponds to timer 00 and register T01CR0 timer 01.
Figure 2. T00CR0/T01CR0
Address
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Initial value
0F92H T01CR0
0F93H T00CR0
IFE
R/W
C2
R/W
C1
R/W
C0
R/W
F3
R/W
F2
R/W
F1
R/W
F0
R/W
00000000B
2.3.2
8/16-bit Composite Timer 00/01 Control Status Register 1 (T00CR1/T01CR1)
This register is used to control the interrupt flag, timer output and timer operations. Register T00CR1 corresponds to
timer 00 and T01CR1 timer 01.
Figure 3. T00CR1/T01CR1
Address
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Initial value
0036H T01CR1
0037H T00CR1
STA
R/W
HO
R/W
IE
R/W
IR
R(RM1),W
BF
R/WX
IF
R(RM1),W
SO
R/W
OE
R/W
00000000B
2.3.3
8/16-bit Composite Timer 00/01 Timer Mode Control Register (TMCR0)
This register is used to select noise filter function, 8-bit or 16-bit operating mode, signal input to timer 00 and the timer
output value. This register serves both timer 00 and timer 01.
Figure 4. TMCR0
2.3.4
Address
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Initial value
0F96H TMCR0
TO1
R/WX
TO0
R/WX
IIS
R/W
MOD
R/W
FE11
R/W
FE10
R/W
FE01
R/W
FE00
R/W
00000000B
8/16-bit Composite Timer 00/01 Data Register ch.0 (T00DR/T01DR)
This register is used to write the maximum value counted during an interval timer or PWM timer operation and to read
the count value during a PWC timer or an input capture operation. Register T00DR corresponds to timer 00 and
T01DR timer 01.
Figure 5. T00DR/T01DR
Address
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Initial value
0F94H T01DR
0F95H T00DR
TDR7
R/W
TDR6
R/W
TDR5
R/W
TDR4
R/W
TDR3
R/W
TDR2
R/W
TDR1
R/W
TDR0
R/W
00000000B
R/W:
Readable/writeable (Read value is the same as write value)
R/WX:
Read only (Readable, writing has no effect on operation)
R (RM1), W:
instruction)
Readable/writable (Read value is different from write value, "1" is read by read-modify-write
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
2.4
Operating Modes
The 8/16-bit Composite timer functions in seven operating modes are shown as below:
Interval Timer Function (One-shot Mode)
Interval Timer Function (Continuous Mode)
Interval Timer Function (Free-run Mode)
PWM Timer Function (Fixed-cycle Mode)
PWM Timer Function (Variable-cycle Mode)
PWC Timer Function
Input Capture Function
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
3
Operations and Examples
This chapter provides examples for 8/16-bit composite timer
This section describes various modes and provides some examples for the 8/16-bit composite timer.
3.1
Operation of Interval Timer Function (One-shot Mode)
When the interval timer function (one-shot mode) is selected, the counter starts counting from "00H" as the timer is
activated. When the counter value matches the register setting value, the timer output is inverted. An interrupt
request is made, and the counter stops counting.
Figure 6 shows the operation of the interval timer function in 8-bit mode.
Figure 6. Operation of Interval Timer Function in the 8-bit Mode (Timer 0)
Setting Procedure Example
The procedure below shows how to set the 8/16-bit composite timer operating in an interval timer function (one-shot
mode, 8 bit).
1.
Set the mode (T00CR0: [F3..F0] = 0 0 0 0 )
2.
Set the counter clock (T00CR0: [C2..C0] )
3.
Set the counter value (T00DR)
4.
Set the interrupt level if necessary (ILR1)
5.
Enable the timer output (T00CR1: OE = 1)
6.
Start the timer (T00CR1: STA = 1)
If the overflow interrupt is enabled, the flag in ISR shall be cleared. (T00CR1: IF = 0)
The following example shows how to set the 8/16-bit composite timer 0 for operation in one-shot mode.
Refer to Appendix Sample Code for project “One-shot”
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
/*
SAMPLE CODE
*/
/*--------------------------------------------------------------------*/
/* initial timer for interval
void InitCompTimer (void)
{
T00DR = 0xFF;
//
TMCR0 = 0x00;
//
T00CR0 = 0x00;
//
T00CR1 = 0x01;
//
}
/* main routine */
void main (void)
{
InitComTimer();
...
T00CR1_STA = 1;
}
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timer (One-shot) function */
set the count value
8-bit, no filtering
interval timer in one-shot mode
disable interrupt, enable output
// start the timer
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
3.2
Operation of Interval Timer Function (Continuous Mode)
When the interval timer function (continuous mode) is selected, the counter starts counting from "00H" as the timer is
activated. When the counter value matches the register setting value, the timer output is inverted. An interrupt
request is made and the counter returns to "00H" and restarts counting. The timer outputs a square wave as a result
of this repeated operation.
Figure 7 shows the operation of the interval timer function in 8-bit mode.
Figure 7. Operating Diagram of Interval Timer Function (Continuous Mode)
Setting Procedure Example
The procedure below shows how to set 8/16-bit composite timer working in interval timer function (Continuous mode).
1.
Set the mode (T00CR0: [F3..F0] = 0 0 0 1 )
2.
Set the counter clock (T00CR0 : [C2..C0] )
3.
Set counter value (T00DR)
4.
Set the interrupt level if necessary (ILR1)
5.
Enable timer output (T00CR1: OE = 1)
6.
Start timer (T00CR1: STA = 1)
If the overflow interrupt is enabled, the flag in ISR shall be cleared. (T00CR1: IF = 0)
The following example shows how to set the 8/16-bit composite timer 0 for operation with interrupt (Continuous mode,
16 bit).
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
/*
SAMPLE CODE
*/
/*--------------------------------------------------------------------*/
/* initial timer for interval timer (continuous) function */
void InitCompTimer (void)
{
T01DR = 0x01;
// set the count value (upper 8 bits)
T00DR = 0xFF;
// set the count value (lower 8 bits)
TMCR0 = 0x10;
// 16-bit, no filtering
T00CR0 = 0x81;
// interval timer in the continuous mode
// enable IF flag interrupt
T00CR1 = 0xA1;
// enable the interrupt, enable the output
// start the timer
}
/* enter ISR while the counter value is matches the pre-set value */
__interrupt void CompTimer (void)
{
T00CR1_IE = 0;
// disable the interrupt
T00CR1_IF = 0;
// clear the flag
...
// interrupt service routine
T00CR1_IE = 1;
// enable the interrupt
▲
}
/* main routine */
void main (void)
{
...
InitCompTimer();
...
while (1);
}
Please note that the corresponding interrupt vector and level shall be defined in the vector.c module of Fujitsu’s
standard template project.
Refer to Appendix Sample Code for project “Continuous”.
/*
SAMPLE CODE
*/
/*--------------------------------------------------------------------*/
/* interrupt level setting */
void InitIrqLevels (void)
{
...
ILR1 = 0xF3;
...
// IRQ5: 8/16-bit timer ch.0 (lower)
}
__interrupt void CompTimer (void);
// Prototype
...
#pragma intvect CompTimer 5
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// 8/16-bit timer ch.0 (lower)
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
3.3
Operation Description of Interval Timer Function (Free-run Mode)
When the interval timer function (free-run mode) is selected, the counter starts counting from "00H". When the
counter value matches the register setting value, the timer output is inverted and an interrupt request is made. If the
counter continues to count and reaches "FFH", it returns to "00H" and restarts counting. The timer outputs square
wave as a result of this repeated operation.
Figure 8. Operating Diagram of Interval Timer Function (Free-run Mode)
Setting Procedure Example
The procedure below shows how to set 8/16-bit composite timer working in interval timer function (Free run mode).
1.
Set the mode (T00CR0: [F3..F0] = 0 0 1 0 )
2.
Set the counter clock (T00CR0: [C2..C0] )
3.
Set the counter value (T00DR)
4.
Set the interrupt level if necessary (ILR1)
5.
Enable the timer output (T00CR1: OE = 1)
6.
Start the timer (T00CR1: STA = 1)
If the overflow interrupt is enabled, the flag in ISR shall be cleared. (T00CR1: IF = 0)
The following example shows how to set the 8/16-bit composite timer 0 for operation in free-run mode.
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
/*
SAMPLE CODE
*/
/*--------------------------------------------------------------------*/
/* initial timer for interval
void InitCompTimer (void)
{
T01DR = 0x01;
//
T00DR = 0xFF;
//
TMCR0 = 0x10;
//
T00CR0 = 0x82;
//
//
T00CR1 = 0xA1;
//
//
}
/* enter ISR while counter
__interrupt void CompTimer
{
T00CR1_IE = 0;
T00CR1_IF = 0;
timer (continuous) function */
set the count value (upper 8 bits)
set the count value (lower 8 bits)
16-bit, no filtering
interval timer in free run mode
enable IF flag interrupt
enable the interrupt, enable output
start the timer
value matches the pre-set value */
(void)
// disable the interrupt
// clear the flag
...
// interrupt service routine
T00CR1_IE = 1;
// enable the interrupt
}
/* main routine */
void main (void)
{
...
InitCompTimer();
...
while (1);
}
Please note that the corresponding interrupt vector and level shall be defined in the vector.c module of Cypress
standard template project.
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
/*
SAMPLE CODE
*/
/*--------------------------------------------------------------------*/
/* interrupt level setting */
void InitIrqLevels (void)
{
...
ILR1 = 0xF3;
...
// IRQ5: 8/16-bit timer ch.0 (lower)
}
__interrupt void CompTimer (void);
// Prototype
...
#pragma intvect CompTimer 5
// 8/16-bit timer ch.0 (lower)
...
Refer to Appendix Sample Code for project “Free-run”.
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
3.4
Operation of PWM Timer Function (Fixed-cycle Mode)
When the PWM timer function (fixed-cycle mode) is selected, a PWM signal with a variable "H" pulse width is
generated in fixed cycle. The cycle is fixed to "FFH" in 8-bit operation or "FFFFH" in 16-bit operation. The time is
determined by the count clock selected. The “H” pulse width is specified by setting a corresponding register
Figure 9. Operating Diagram of PWM Timer Function (Fixed-cycle Mode)
Setting Procedure Example
The procedure below shows how to set 8/16-bit composite timer working in the PWM timer function (Fixed-cycle
Mode).
1.
Set the mode (T00CR0: [F3..F0] = 0 0 1 1 )
2.
Set the counter clock (T00CR0: [C2..C0])
3.
Set the duty by setting T00DR
4.
Start the timer (T00CR1: STA = 1)
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
The following example shows how to set 8/16-bit composite timer 0 for operation in the PWM timer function (fixedcycle mode).
/*
SAMPLE CODE
*/
/*--------------------------------------------------------------------*/
/* initial timer for the PWM function (fixed cycle) */
void InitCompTimer (void)
{
T00DR = 0x40;
// set the PWM timer duty
TMCR0 = 0x00;
// 8-bit, no filtering
T00CR0 = 0x03;
T00CR1 = 0x01;
// PWM timer function (fixed cycle mode)
// enable the output
}
...
/* main routine */
void main (void)
{
...
InitCompTimer ();
...
T00CR1_STA = 1;
//start the timer
While(1);
}
Refer to Appendix Sample Code for project “PWM_Fixed”.
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
3.5
Operation of PWM Timer Function (Variable-cycle Mode)
When the PWM timer function (variable-cycle mode) is selected, two 8-bit counters are used to generate an 8-bit
PWM signal in any cycles and duty depending on the cycle and "L" pulse width specified by corresponding registers.
In this operating mode, the composite timer cannot form a 16-bit counter, as two 8-bit counters are used.
Figure 10.Operating Diagram of PWM Timer Function (Variable-cycle Mode)
Setup Procedure Example
The procedure below shows how to set 8/16-bit composite timer working in PWM timer function (variable-cycle
mode).
1.
Set the mode (T00CR0: [F3..F0] = 0 1 0 0 )
2.
Set the counter clock (T00CR0: [C2..C0])
3.
Set the counter clock (T01CR0: [C2..C0])
4.
Set the duty by setting T00DR
5.
Set the cycle by setting T01DR
6.
Enable the timer output (T00CR1: OE = 1)
7.
Start the timer (T00CR1: STA = 1)
The following example shows how to set the 8/16-bit composite timer for operation with PWM timer function (variablecycle mode).
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
/*
SAMPLE CODE
*/
/*--------------------------------------------------------------------*/
/* initial timer for PWM function (variable cycle) */
void InitCompTimer (void)
{
T01DR = 0x80;
// counter timer 01 value for duty
T00DR = 0x40;
// counter timer 00 value for cycle
// duty ratio 50%
TMCR0 = 0x00;
// 8-bit, no filtering
T00CR0 = 0x04;
T01CR0 = 0x04;
T00CR1 = 0x01;
// PWM timer function (variable-cycle mode)
// choose the same count clock as Timer 00
// enable the output
}
...
/* main routine */
void main (void)
{
...
InitCompTimer ();
...
T00CR1_STA = 1;
//start the timer
while(1);
}
Refer to Appendix Sample Code for project “PWM_Vari”.
Please note that timer 00 and timer 01 shall use the same counter clock when using this function.
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
3.6
Operation of PWC Timer Function
When the PWC timer function is selected, the width and the cycle of an external input pulse can be measured.
In this operating mode, the counter starts counting from "00H" upon the detection of a count start edge of an external
input signal and transfers the count value to a register to generate an interrupt upon the detection of a count end
edge.
Figure 11. Operating Diagram of PWC Timer (Example of H-pulse Width Measurement)
Setting Procedure Example
The procedure below shows how to set up an 8/16-bit composite timer working in the PWC timer function (“H” pulse).
1.
Set input for timer (DDR0_P04 = 0; AIDRL_P04 = 1;)
2.
Select the input port ( SYSC_EC0SL = 1)
3.
Set the mode (T00CR0: [F3..F0] = 0 1 0 1 )
4.
Set the counter clock (T00CR0 : [C2..C0] )
5.
Set the interrupt level if need (ILR1)
6.
Enable timer output (T00CR1: OE = 1)
7.
Start timer (T00CR1: STA = 1)
8.
Read the value while upon completion of the measurement
If the interrupt is enabled, the flag in ISR shall be cleared. (T00CR1: IR = 0).
The PWC timer has five measurement modes as shown below:
Table 1. Relationship between T00CR0/T01CR_F3..F0 and PWC Timer Function
T00CR0/T01CR0 [F3..F0]
Description
0101
"H" pulse = rising to falling
0110
“L" pulse = falling to rising
0111
cycle = rising to rising
1000
cycle = falling to falling
1001
“H" pulse = rising to falling; Cycle = rising to rising
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
The following example shows how to set the 8/16-bit composite timer 0 for operation in the PWC Timer Function.
/*
SAMPLE CODE
*/
/*--------------------------------------------------------------------*/
/* initial timer for the PWC function */
void InitCompTimer (void)
{
SYSC_EC0SL = 1;
// P04 as EC0
DDR0_P04 = 0;
// P04 input
AIDRL |= 0x10;
// disable AN04 input
TMCR0 = 0x00;
// 8-bit, no filtering
T00CR0 = 0x05;
// PWC timer ("H" pulse = from rising to falling)
T00CR1 = 0xA0;
// enable an interrupt, disable the output
// start the timer
}
/* enter ISR while measurement completes or overflows */
__interrupt void CompTimer (void)
{
T00CR1_IE = 0;
// disable an interrupt
if (T00CR1_BF)
// measurement data present in data register ?
{
ucHCycle = T00DR;
// read value
}
T00CR1_IR = 0;
// clear the flag
T00CR1_IE = 1;
// enable the interrupt
}
/* main routine */
void main (void)
{
...
InitCompTimer ();
...
// input signal to be measured
while(1);
}
Please note that the corresponding interrupt vector and level shall be defined in the vector.c module of Fujitsu’s
standard template project.
/*
SAMPLE CODE
*/
/*--------------------------------------------------------------------*/
/* interrupt level setting */
void InitIrqLevels (void)
{
...
ILR1 = 0xF3;
...
// IRQ5: 8/16-bit timer ch.0 (lower)
}
__interrupt void CompTimer (void);
...
#pragma intvect CompTimer
...
5
// Prototype
// 8/16-bit timer ch.0 (lower)
Refer to Appendix Sample Code for project “PWC”.
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
3.7
Operation of the Input Capture Function
When the input capture function is selected, the counter value is stored in a register upon the detection of an edge for
an external input signal.
Figure 12. Operating Diagram of the Input Capture Function
Setup Procedure Example
The procedure below shows how to set an 8/16-bit composite timer working in the Input Capture Function (rising,
counter clear).
1.
Set the input for timer (DDR0_P04 = 0; AIDRL_P04 = 1; )
2.
Select the input port ( SYSC_EC0SL = 1)
3.
Set the mode (T00CR0: [F3..F0] = 1 1 0 1 )
4.
Set the counter clock (T00CR0: [C2..C0] )
5.
Set the interrupt level if need (ILR1)
6.
Enable the timer output (T00CR1: OE = 1)
7.
Start the timer (T00CR1: STA = 1)
8.
Read the value upon completion of the measurement
If the interrupt is enabled, the flag in ISR shall be cleared. (T00CR1: IR = 0).
The Input capture has six capture modes as shown below.
Table 2. Relationship between T00CR0/T01CR_F3..F0 and Input Capture Function
T00CR0/T01CR0 [F3..F0]
Description
1010
rising, free-run counter
1011
falling, free-run counter
1100
both edges, free-run counter
1101
rising, counter clear
1110
falling, counter clear
1111
both edges, counter clear
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
The following example shows how to set an 8/16-bit composite timer 0 for operation in the Input Capture Function.
/*
SAMPLE CODE
*/
/*--------------------------------------------------------------------*/
/* initial timer for the input capture function */
void InitCompTimer (void)
{SYSC_EC0SL = 1;
// P04 as EC0
DDR0_P04 = 0;
// P04 input
AIDRL |= 0x10;
// disable AN04 input
TMCR0 = 0x00;
// 8-bit, no filtering
T00CR0 = 0x0D;
// Input capture (rising, counter clear)
T00CR1 = 0xA0;
// enable the interrupt, disable the output
// start the timer
}
/* Enter ISR while capturing the input */
__interrupt void CompTimer (void)
{
T00CR1_IE = 0;
// disable the interrupt
ucHCycle = T00DR;
// read value
T00CR1_IR = 0;
T00CR1_IE = 1;
// clear the flag
// enable the interrupt
}
/* main routine */
void main (void)
{
...
InitCompTimer ();
...
// input signal to be captured
while(1);
}
Please note that the corresponding interrupt vector and level shall be defined in the vector.c module of Fujitsu’s
standard template project.
/*
SAMPLE CODE
*/
/*--------------------------------------------------------------------*/
/* interrupt level setting */
void InitIrqLevels (void)
{
...
ILR1 = 0xF3;
...
// IRQ5: 8/16-bit timer ch.0 (lower)
}
__interrupt void CompTimer (void);
// Prototype
...
#pragma intvect CompTimer 5
// 8/16-bit timer ch.0 (lower)
...
Refer to Appendix Sample Code for project “Capture”.
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
4
Notes on Using 8/16-bit Composite Timer
Chapter four is devoted to the notes on using 8/16-bit composite timer.
5
5.1
To switch the timer function with the timer operation mode select bits (T00CR0/T01CR0:F3, F2, F1, F0), stop the
timer operation first (T00CR1/T01CR1: STA = 0), then clear the interrupt flag (T00CR1/T01CR1: IF, IR), the
interrupt enable bits (T00CR1/T01CR1: IE, T00CR0/T01CR0: IFE) and the buffer full flag (T00CR1/T01CR1: BF).
In the operation of the PWC function or the input capture function, an interrupt may occur even before the timer is
activated (STA = 0). Therefore, invalidate the value of the 8/16-bit composite timer 00/01 data register
(T00DR/T01DR) existing before the start of the timer.
Appendix
Sample Code
5.1.1 Project Name: One-shot
Interval Timer Function (One-shot Mode)
main.c
#include "mb95200.h"
/*--------------------------------------------------------------------------name: InitCompTimer();
function: initial timer for the interval timer (One-shot) function
-----------------------------------------------------------------------------*/
void InitCompTimer (void)
{
T00DR = 0xFF;
// set the count value
TMCR0 = 0x00;
// 8-bit, no filtering
T00CR0 = 0x00;
// interval timer in one-shot mode
T00CR1 = 0x01;
// disable the interrupt, enable the output
}
/*--------------------------------------------------------------------------name: main();
function: main loop
-----------------------------------------------------------------------------*/
void main(void)
{
InitCompTimer();
T00CR1_STA = 1;
// start the timer
}
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
Project Name: Continuous
Interval Timer Function (continuous mode)
main.c
#include "mb95200.h"
/*--------------------------------------------------------------------------name: InitCompTimer();
function: initial timer for the interval timer (continuous) function
-----------------------------------------------------------------------------*/
void InitCompTimer (void)
{
T01DR = 0x01; // set the count value (upper 8 bits)
T00DR = 0xFF; // set the count value (lower 8 bits)
TMCR0 = 0x10; // 16-bit, no filtering
T00CR0 = 0x81;
// interval timer in continuous mode
// enable the IF flag interrupt
T00CR1 = 0xA1;
// enable the interrupt, enable the output
// start the timer
}
/*--------------------------------------------------------------------------name: CompTimer ();
function: enter ISR while the counter value matches the pre-set value
-----------------------------------------------------------------------------*/
__interrupt void CompTimer (void)
{
T00CR1_IE = 0;
// disable the interrupt
T00CR1_IF = 0;
// clear the flag
//...
// interrupt service routine
T00CR1_IE = 1;
// enable the interrupt
}
/*--------------------------------------------------------------------------name: main ();
function: main loop
-----------------------------------------------------------------------------*/
void main (void)
{
InitCompTimer();
InitIrqLevels();
__EI();
while (1);
}
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
vector.c
#include "mb95200.h"
/*--------------------------------------------------------------------------name: InitIrqLevels ();
function: Interrupt level (priority) setting
-----------------------------------------------------------------------------*/
void InitIrqLevels(void)
{
ILR1 = 0xF3; // IRQ4: UART/SIO ch0
// IRQ5: 8/16-bit timer ch.0 (lower)
// IRQ6: 8/16-bit timer ch.0 (upper)
// IRQ7: LIN-UART (reception)
}
/*--------------------------------------------------------------------------Prototypes
-----------------------------------------------------------------------------*/
__interrupt void CompTimer (void);
/*--------------------------------------------------------------------------Vector definition
-----------------------------------------------------------------------------*/
#pragma intvect CompTimer 5
// IRQ5: 8/16-bit timer ch.0 (lower)
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
5.1.2 Project Name: Free-run
Interval Timer Function (Free-run mode)
main.c
#include "mb95200.h"
/*--------------------------------------------------------------------------name: InitCompTimer();
function: initial timer for the interval timer (Free-run) function
-----------------------------------------------------------------------------*/
void InitCompTimer (void)
{
T01DR = 0x01; // set count value (upper 8 bits)
T00DR = 0xFF; // set count value (lower 8 bits)
TMCR0 = 0x10; // 16-bit, no filtering
T00CR0 = 0x82;
// interval timer in a free run mode
// enable the IF flag interrupt
T00CR1 = 0xA1;
// enable the interrupt, enable the output
// start the timer
}
/*--------------------------------------------------------------------------name: CompTimer ();
function: enter ISR while the counter value matches the pre-set value
-----------------------------------------------------------------------------*/
__interrupt void CompTimer (void)
{
T00CR1_IE = 0;
// disable the interrupt
T00CR1_IF = 0;
// clear the flag
//...
// interrupt service routine
T00CR1_IE = 1;
// enable the interrupt
}
/*--------------------------------------------------------------------------name: main ();
function: main loop
-----------------------------------------------------------------------------*/
void main (void)
{
InitCompTimer();
InitIrqLevels();
__EI();
while (1);
}
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
vector.c
#include "mb95200.h"
/*--------------------------------------------------------------------------name: InitIrqLevels ();
function: Interrupt level (priority) setting
-----------------------------------------------------------------------------*/
void InitIrqLevels(void)
{
ILR1 = 0xF3; // IRQ4: UART/SIO ch.0
// IRQ5: 8/16-bit timer ch.0 (lower)
// IRQ6: 8/16-bit timer ch.0 (upper)
// IRQ7: LIN-UART (reception)
}
/*--------------------------------------------------------------------------Prototypes
-----------------------------------------------------------------------------*/
__interrupt void CompTimer (void);
/*--------------------------------------------------------------------------Vector definition
-----------------------------------------------------------------------------*/
#pragma intvect CompTimer 5
// IRQ5: 8/16-bit timer ch0 (lower)
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
5.1.3 Project Name: PWM_Fixed
PWM Timer Function (Fixed Cycle Mode)
main.c
#include “mb95200.h”
/*--------------------------------------------------------------------------name: InitCompTimer();
function: initial timer for the PWM (fixed-cycle) function
-----------------------------------------------------------------------------*/
void InitCompTimer (void)
{
T00DR = 0x40; // set the PWM timer duty
TMCR0 = 0x00; // 8-bit, no filtering
T00CR0 = 0x03;
// PWM timer function (fixed cycle mode)
T00CR1 = 0x01;
// enable the output
}
/*--------------------------------------------------------------------------name: main ();
function: main loop
-----------------------------------------------------------------------------*/
void main (void)
{
InitCompTimer();
T00CR1_STA = 1;
// start the timer
while(1);
}
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
5.1.4 Project Name: PWM_Vari
PWM Timer Function (Variable-cycle Mode)
main .c
#include "mb95200.h"
/*--------------------------------------------------------------------------name: InitCompTimer();
function: initial timer for PWM (variable cycle) function
-----------------------------------------------------------------------------*/
void InitCompTimer (void)
{
T01DR = 0x80; // set the PWM timer cycle
T00DR = 0x40; // set the PWM timer duty
// duty ratio 50%
TMCR0 = 0x00; // 8-bit, no filtering
T00CR0 = 0x04;
// PWM timer function (variable cycle mode)
T01CR0 = 0x04;
// choose the same count clock as Timer 00
T00CR1 = 0x01;
// enable the output
}
/*--------------------------------------------------------------------------name: main ();
function: main loop
-----------------------------------------------------------------------------*/
void main (void)
{
InitCompTimer();
T00CR1_STA = 1;
// start the timer
while(1);
}
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
5.1.5 Project Name: PWC
PWC Timer Function
main.c
#include "mb95200.h"
unsigned char ucHCycle = 0xFF;
/*--------------------------------------------------------------------------name: InitCompTimer();
function: initial timer for the PWC function
-----------------------------------------------------------------------------*/
void InitCompTimer (void)
{
SYSC_EC0SL = 1;
// P04 as EC0
DDR0_P04 = 0; // P04 input
AIDRL |= 0x10;
// disable AN04 input
TMCR0 = 0x00; // 8-bit, no filtering
T00CR0 = 0x05;
// PWC timer ("H" pulse = from rising to falling)
T00CR1 = 0xA0;
// enable the interrupt, disable the output
// start the timer
}
/*--------------------------------------------------------------------------name: CompTimer ();
function: enter ISR while the counter value matches the pre-set value
-----------------------------------------------------------------------------*/
__interrupt void CompTimer (void)
{
T00CR1_IE = 0;
// disable the interrupt
if (T00CR1_BF)
// measurement data present in a data register ?
{
ucHCycle = T00DR;
// read the value
}
T00CR1_IR = 0;
// clear the flag
T00CR1_IE = 1;
// enable the interrupt
}
/*--------------------------------------------------------------------------name: main ();
function: main loop
-----------------------------------------------------------------------------*/
void main (void)
{
InitCompTimer();
InitIrqLevels();
__EI();
// input signal to be measured
while (1);
}
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
vector.c
#include "mb95200.h"
/*--------------------------------------------------------------------------name: InitIrqLevels ();
function: Interrupt level (priority) setting
-----------------------------------------------------------------------------*/
void InitIrqLevels(void)
{
ILR1 = 0xF3; // IRQ4: UART/SIO ch.0
// IRQ5: 8/16-bit timer ch.0 (lower)
// IRQ6: 8/16-bit timer ch.0 (upper)
// IRQ7: LIN-UART (reception)
}
/*--------------------------------------------------------------------------Prototypes
-----------------------------------------------------------------------------*/
__interrupt void CompTimer (void);
/*--------------------------------------------------------------------------Vector definition
-----------------------------------------------------------------------------*/
#pragma intvect CompTimer 5
// IRQ5: 8/16-bit timer ch.0 (lower)
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
5.1.6 Project Name: Capture
Input Capture Function
main.c
#include "mb95200.h"
unsigned char ucHCycle = 0xFF;
/*--------------------------------------------------------------------------name: InitCompTimer();
function: initial timer for the capture input function
-----------------------------------------------------------------------------*/
void InitCompTimer (void)
{
SYSC_EC0SL = 1;
DDR0_P04 = 0;
AIDRL |= 0x10;
TMCR0 = 0x00;
T00CR0 = 0x0D;
T00CR1 = 0xA0;
//
//
//
//
//
//
//
P04 as EC0
P04 input
disable AN04 input
8-bit, no filtering
Input capture (rising, counter clear)
enable the interrupt, disable the output
start the timer
}
/*--------------------------------------------------------------------------name: CompTimer ();
function: enter ISR while capturing the input
-----------------------------------------------------------------------------*/
__interrupt void CompTimer (void)
{
T00CR1_IE = 0;
// disable the interrupt
ucHCycle = T00DR;
// read the value
T00CR1_IR = 0;
// clear the flag
T00CR1_IE = 1;
// enable the interrupt
}
/*--------------------------------------------------------------------------name: main ();
function: main loop
-----------------------------------------------------------------------------*/
void main (void)
{
InitCompTimer();
InitIrqLevels();
__EI();
// input signal to be captured
while (1);
}
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
vector.c
#include "mb95200.h"
/*--------------------------------------------------------------------------name: InitIrqLevels ();
function: Interrupt level (priority) setting
-----------------------------------------------------------------------------*/
void InitIrqLevels(void)
{
ILR1 = 0xF3; // IRQ4: UART/SIO ch0
// IRQ5: 8/16-bit timer ch0 (lower)
// IRQ6: 8/16-bit timer ch0 (upper)
// IRQ7: LIN-UART (reception)
}
/*--------------------------------------------------------------------------Prototypes
-----------------------------------------------------------------------------*/
__interrupt void CompTimer (void);
/*--------------------------------------------------------------------------Vector definition
-----------------------------------------------------------------------------*/
#pragma intvect CompTimer 5
// IRQ5: 8/16-bit timer ch0 (lower)
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
6
Additional Information
For more information on Cypress Microcontrollers Products, please visit the following websites:
http://www.cypress.com/cypress-microcontrollers
http://www.cypress.com/cypress-mcu-product-softwareexamples
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
Document History
Document Title: AN205275 – F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
Document Number: 002-05275
Revision
ECN
Orig. of
Change
Submission
Date
**
-
Levi,
20/03/2008
V1.0, First Draft
18/07/2008
V1.1, Add URL in chapter 6 Additional Information; modify some sample code.
05/06/2016
Migrated Spansion Application Note “MCU-AN-500004-E-11” to Cypress format.
Zhang
*A
5260372
www.cypress.com
HUAL
Description of Change
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F²MC - 8FX Family, MB95200H/210H Series, 8/16-Bit Composite Timer
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