My previously posted code is not totally working as expected, in some case I get false reading.
Probably because the critical section has no effect.
I tried to play with all IRQs source in RTC_CNTL_INT_ENA_REG but I will never get called when a touch measure is ready in the fsm ...

I ended up with the following code:


#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
extern portMUX_TYPE rtc_spinlock;

volatile uint16_t bits=0;

uint16_t get_bits()
{
uint8_t i, j = 0;
uint16_t touch_value;

if (GET_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_MEAS_DONE) == 0 ...

I'm using the touch pad in ESP32, the software example is nice, an IRQ handler get called when a pad is touched but I'm unable to have the information that the pad has been released.
Thus I've tried to use the touch_pad_read function but this function is blocking/stalling a little amount of time at ...