Onboard Temperature from nRF52840

Firmware
, ,
2

This should work on all Gen 3 devices (Argon, Boron, Xenon, B Series SoM):

#include "Particle.h"

// Optional:
// SYSTEM_THREAD(ENABLED);

SerialLogHandler logHandler;

void setup() {
}

void loop() {
	// Get die temperature in 0.25 degrees Celsius.  Takes 50 us to complete.
	int32_t temp;
	uint32_t res = sd_temp_get(&temp);
	if (res == NRF_SUCCESS) {
		float tempC = (float)temp / 4;
		float tempF = tempC * 9 / 5 + 32;
		Log.info("tempC=%.1f tempF=%.1f", tempC, tempF);
	}
	else {
		Log.error("failed to get temperature");
	}

	delay(2000);
}

Output:

0000011269 [app] INFO: tempC=29.8 tempF=85.6
0000013271 [app] INFO: tempC=29.8 tempF=85.6
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