How to use comparator in Sensor Controller for cc26xx

Hi,

We have simplelink academy talking about sensor controller studio and training. I believe you can benefit lots from it.

Please find the link for simplelink academy : software-dl.ti.com/.../overview.html

software-dl.ti.com/.../sc_01_project_from_scratch.html

Also there is already out of box ADC project comes with sensor controller studio, you can take a look at it and modify from there.

Thanks for reply.

I am using ADC window monitor sensor controller example code for generate ADC pin interrupt when pin voltage goes high from threshold.

Now I can successfully integrate sensor controller driver with simpleBLEPeripheral example code and it's working fine.

When gpio voltage goes high scTaskAlertCallback() callback called.

When I call i2c related function from scTaskAlertCallback(), sensor controller task get stuck.

Below is my code:

void scTaskAlertCallback(void) {

// Wake up the OS task
Semaphore_post(Semaphore_handle(&semScTaskAlert));

// Calling i2c function like i2c_transfer(..)  --> sensor controller task get stuck

} // scTaskAlertCallback

void taskFxn(UArg a0, UArg a1) {
PIN_Handle hLedPins;

// Enable LED pins
hLedPins = PIN_open(&ledPinState, pLedPinTable);

// Initialize the Sensor Controller
scifOsalInit();
scifOsalRegisterCtrlReadyCallback(scCtrlReadyCallback);
scifOsalRegisterTaskAlertCallback(scTaskAlertCallback);
scifInit(&scifDriverSetup);
scifStartRtcTicksNow(0x00010000 / 8);

// Configure and start the Sensor Controller's ADC window monitor task (not to be confused with OS tasks)
scifTaskData.adcWindowMonitor.cfg.adcWindowHigh = 800;
scifStartTasksNbl(BV(SCIF_ADC_WINDOW_MONITOR_TASK_ID));

// Main loop
while (1) {

// Wait for an ALERT callback
Semaphore_pend(Semaphore_handle(&semScTaskAlert), BIOS_WAIT_FOREVER);

// Clear the ALERT interrupt source
scifClearAlertIntSource();

// Acknowledge the alert event
scifAckAlertEvents();
}

} // taskFxn

Do you know why sensor controller task get stuck after calling i2c related API.

Thanks.

Raj

Did you initialize I2C first? If yes, can you post code snippet?

Hello Christin

Yes I initialize i2c.

Let's assume,

i2cFxn(){

.....

......

}

When I call i2cFxn() from simpleBLEPeripheral task its working fine. and when I call i2cFxn() from sensor controller task it's not working.

As per my thought, May be problem in task switching from sensor controller to M3 Application (simpleBLEPeripheral task).

Please help me if you can help me on this scenario.

Thanks

Raj