Chain Joystick Tutorial

#include "M5Chain.h"

#define RXD_PIN GPIO_NUM_5  // 47 for the other side of Chain DualKey
#define TXD_PIN GPIO_NUM_6  // 48 for the other side of Chain DualKey

Chain M5Chain;

device_list_t *device_list = NULL;
uint16_t device_count = 0;

int16_t x_value, y_value;
uint8_t button_status;
chain_button_press_type_t button_press_type;

void setup() {
  Serial.begin(115200);
  delay(1000);
  Serial.println("===========================");
  Serial.println("M5Stack Chain Joystick Test");

  M5Chain.begin(&Serial2, 115200, RXD_PIN, TXD_PIN);

  M5Chain.getDeviceNum(&device_count);
  device_list = (device_list_t *)malloc(sizeof(device_list_t));
  device_list->count = device_count;
  device_list->devices = (device_info_t *)malloc(sizeof(device_info_t) * device_count);
  M5Chain.getDeviceList(device_list);

  if (device_list->devices[0].device_type == CHAIN_JOYSTICK_TYPE_CODE) {
    Serial.println("ID[1] is Chain Joystick\n");
    delay(1000);
  } else {
    Serial.println("ID[1] is NOT Chain Joystick\n");
    return;
  }
}

void loop() {
  M5Chain.getJoystickMappedInt16Value(1, &x_value, &y_value);  // Device ID
  Serial.print("x_value:");
  Serial.println(x_value);
  Serial.print("y_value:");
  Serial.println(y_value);

  M5Chain.getJoystickButtonStatus(1, &button_status);  // Device ID
  Serial.print("button_status:");
  Serial.println(button_status);

  while (M5Chain.getJoystickButtonPressStatus(1, &button_press_type)) {  // Device ID
    switch (button_press_type) {
      case CHAIN_BUTTON_PRESS_SINGLE:
        Serial.println("Single pressed");
        break;
      case CHAIN_BUTTON_PRESS_DOUBLE:
        Serial.println("Double pressed");
        break;
      case CHAIN_BUTTON_PRESS_LONG:
        Serial.println("Long pressed");
        break;
    }
  }
}