IPC@CHIP Documentation - SC12 @CHIP-RTOS V1.10

default is a 50% duty cycle waveform (Change waveform with HAL function 0x8B).
Note that TMRIN pin and TMROUT pin can not be used at the same time.
If the clock divider value is set to 0000h, the timer will count from 0000h to FFFFh (maximum divider).
When the timer reaches the clock divider value, it resets to 0 during the same clock cycle. The timer
count never dwells equals to the clock divider value (except for special case when divider value is set to
0000h).
When the timer is configured to run in single time mode, the timer clears the count and then halts on
reaching the maximum count (clock divider value).
If the timer interrupt is enabled, the interrupt request is generated when the count equals the clock divider
value. Use HAL function 0x84 to install your interrupt service routine.
If "use internal clock" is selected the associated TMRIN pin serves as a gate. A "high" on the TMRIN pin
keeps the timer counting. A "low" holds the timer value.
Related Topics
Initialize Timer Settings Ext
HAL Start Timer function
Read Timer Count
Write Timer Count
Developer Notes
The timer output frequency is dependent on the internal processor clock.
For compatibility with future versions of @Chip, please use the HAL function 0x8A, "Get frequencies", to
compute the correct clock divider value.
Available examples
1. TimerIn example, timerin.c
2. TimerOut example, timerout.c
Top of list
Index page
Interrupt 0xA1 service 0x86: HAL: Start Timer
Parameters
AH
AL
Enable the specified timer to count.
Must be 0x86.
Timer
0=Timer0 / 1=Timer1
Return Value
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