ULP Processor code

vangalvin · August 3, 2019, 1:33am

I seem to be having issues getting code running using the ULP.
There seems to be something missing in the tool chain and not quite sure what it is.
Has anyone managed to load code in to the ULP for the Wireless Shell and get it running using the Arduino IDE?

Supporter · August 4, 2019, 9:14am

Hi @vangalvin

We had provided a simple ULP example in our GitHub project, I think you can refer to this code:

github.com

HelTecAutomation/Heltec_ESP32/blob/master/examples/ESP32/ULP/HoldPinStatus/HoldPinStatus.ino

/*
 * Hold GPIO status in deep sleep mode, use ESP32's ULP (Ultra Low Power) coprocessor
 *
 * HelTec AutoMation, Chengdu, China.
 * 成都惠利特自动化科技有限公司
 * www.heltec.cn
 * support@heltec.cn
 *
 *this project also release in GitHub:
 *https://github.com/HelTecAutomation/ESP32_LoRaWAN
*/
#include "soc/rtc_io_reg.h"
#include "driver/rtc_io.h"

#define uS_TO_S_FACTOR 1000000  /* Conversion factor for micro seconds to seconds */
#define TIME_TO_SLEEP  5        /* Time ESP32 will go to sleep (in seconds) */

RTC_DATA_ATTR int bootCount = 0;

void setup(){

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