Tool/software:
Hi,
I am attempting to use a gp timer in edge capture mode so I can count digital pulses. Is there an example that I can reference to do this?
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Tool/software:
Hi,
I am attempting to use a gp timer in edge capture mode so I can count digital pulses. Is there an example that I can reference to do this?
Hello Chris,
We may not have an exact example here, but we can try modifying the period example to use edge capture:
(reference the SDK documentation by pressing the "GPTimer Driver" hyperlink)
GPTimerCC26XX_Handle hTimer; void timerCallback(GPTimerCC26XX_Handle handle, GPTimerCC26XX_IntMask interruptMask) { // interrupt callback code goes here. Minimize processing in interrupt. } void taskFxn(uintptr_t a0, uintptr_t a1) { GPTimerCC26XX_Params params; GPTimerCC26XX_Params_init(¶ms); params.width = GPT_CONFIG_16BIT; params.mode = GPT_MODE_PERIODIC; params.direction = GPTimerCC26XX_DIRECTION_UP; params.debugStallMode = GPTimerCC26XX_DEBUG_STALL_OFF; hTimer = GPTimerCC26XX_open(CC2650_GPTIMER0A, ¶ms); if(hTimer == NULL) { Log_error0("Failed to open GPTimer"); Task_exit(); } Types_FreqHz freq; BIOS_getCpuFreq(&freq); GPTimerCC26XX_Value loadVal = freq.lo / 1000 - 1; //47999 GPTimerCC26XX_setLoadValue(hTimer, loadVal); GPTimerCC26XX_registerInterrupt(hTimer, timerCallback, GPT_INT_TIMEOUT); GPTimerCC26XX_start(hTimer); while(1) { Task_sleep(BIOS_WAIT_FOREVER); } }
Thanks,
Alex F