Function probeDS3231Signature

lib/hal/HalGPIO.cpp:78–87

}

bool probeDS3231Signature() {
  uint8_t sec = 0;
  if (!readI2CReg8(I2C_ADDR_DS3231, DS3231_SEC_REG, &sec)) {
    return false;
  }
  const uint8_t tensDigit = (sec >> 4) & 0x07;
  const uint8_t onesDigit = sec & 0x0F;

  return tensDigit <= 5 && onesDigit <= 9;
}

bool probeQMI8658Signature() {
  uint8_t whoami = 0;