RE: 52820 COMP problem

Jared — Mon, 08 Feb 2021 09:49:21 GMT

Hi,

Are you using your a custom board or a development kit? If you're using a custom board, have you included a custom board file? What pin are you measuring on?

regards

Jared

RE: 52820 COMP problem

logan.xu — Fri, 05 Feb 2021 13:51:09 GMT

The defines in sdk_config.h is：

#define NRFX_COMP_ENABLED 1

#define NRFX_COMP_CONFIG_REF 4 // <4=> VDD 3.3v

#define NRFX_COMP_CONFIG_MAIN_MODE 0 // <0=> Single ended

#define NRFX_COMP_CONFIG_INPUT 2

And I also modify the hreshold default configuration:

/** @brief COMP threshold default configuration. */
#define NRFX_COMP_CONFIG_TH \
{ \
.th_down = NRFX_VOLTAGE_THRESHOLD_TO_INT(1.0, 3.3), \
.th_up = NRFX_VOLTAGE_THRESHOLD_TO_INT(2.0, 3.3) \
}

But when the voltage down to 0.3V from 2.5V , the comp_event_handler didn't be called?