Studio XIAO nRF52840 (Sense) battery pins number

[Pierluigi_Ritrovato]

@msfujino

//----------------------------------------------------------------------------------------------
//Board Library : Seeed nRF52 Borads 1.1.8
//Board Select  : Seeed nRF52 Borads / Seeed XIAO nRF52840 Sense
//----------------------------------------------------------------------------------------------
#include <Arduino.h>
#include <Adafruit_TinyUSB.h>   // for Serial.print()

//Arduino15\packages\Seeeduino\hardware\nrf52\1.1.8\variants\Seeed_XIAO_nRF52840_Sense\variant.cpp
#define PIN_VBAT        (32)  // D32 battery voltage
#define PIN_VBAT_ENABLE (14)  // D14 LOW:read anable
#define PIN_HICHG       (22)  // D22 charge current setting LOW:100mA OPEN:50mA
#define PIN_CHG         (23)  // D23 charge indicatore LOW:charge HIGH:no charge

void setup() 
{
  Serial.begin(115200);
  while(!Serial);
  
  pinMode(PIN_VBAT_ENABLE, OUTPUT);
  digitalWrite(PIN_VBAT_ENABLE, LOW); // VBAT read enable

//  pinMode(PIN_HICHG, OUTPUT);         // charge current 100mA
//  digitalWrite(PIN_HICHG, LOW);       // charge current 100mA
  pinMode(PIN_HICHG, INPUT);          // charge current 50mA

  pinMode(PIN_CHG, INPUT);            // charge indicatore LOW:charge HIGH:discharge
  
  // initialise ADC wireing_analog_nRF52.c:73
  analogReference(AR_DEFAULT);        // default 0.6V*6=3.6V  wireing_analog_nRF52.c:73
  analogReadResolution(12);           // wireing_analog_nRF52.c:39
}

void loop() 
{
  int vbatt = analogRead(PIN_VBAT);
  Serial.print(vbatt, HEX);
  Serial.print("    ");
  Serial.print(2.961 * 3.6 * vbatt / 4096);   // Resistance ratio 2.961, Vref = 3.6V 
  Serial.print("    ");
  Serial.println(digitalRead(PIN_CHG));       // 0:charge, 1:discharge 

  delay(1000);
}

thanks! the blue led is off.
Below my script. Meas that I have remove the wire.h and add Adafruit_TinyUSB.h.

#include “LSM6DS3.h”
#include “Wire.h”
#include <ArduinoBLE.h>
#include <Arduino.h>
#include “SPI.h”
//#include <Adafruit_TinyUSB.h>

#define BAT_HIGH_CHARGE 13
#define BAT_CHARGE_STATE 23
#define VIBRATION_PIN 0
#define VBAT_ENABLE 14
#define INV_PI (0.31830988618379F) // 1/pigreco
#define CLEAR_STEP true
#define NOT_CLEAR_STEP false
#define int2Pin PIN_LSM6DS3TR_C_INT1 // for weakup after double tap when in deep sleep mode