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add I2C type UNIT
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‎examples/Unit/4-RELAY/4-RELAY/4-RELAY.ino‎

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/*
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Description: Control 4 relays and demonstrate the asynchronous control relay LED
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*/
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#include <M5Core2.h>
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/*-----------------------------------------------------------------------------*/
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// |RELAY control reg | 0x10
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// |-----------------------------------------------------------------------------
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// |Relay_ctrl_mode_reg[0] | R/W | System control
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// | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
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// | R | R | R | R | R | R | R | Sync Mode |
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// | -Sync Mode:0 LED&Relay Async
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// | -Sync Mode:1 LED&Relay Sync
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//---------------------------------------------------------------------------------
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// |Relay_ctrl_mode_reg[1] | R/W | Relay & LED control
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// | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
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// | LED1| LED2| LED3| LED4| RLY1| RLY2| RLY3| RLY4|
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//
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/*-------------------------------------------------------------------------------*/
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void WriteRelayReg( int regAddr, int data )
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{
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Wire.beginTransmission(0x26);
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Wire.write(regAddr);
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Wire.write(data);
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Wire.endTransmission();
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Serial.printf("[ W ] %02X : %02X. \r\n", regAddr, data);
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}
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int readRelayReg(int regAddr)
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{
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Wire.beginTransmission(0x26);
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Wire.write(regAddr);
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Wire.endTransmission();
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Wire.requestFrom(0x26, 1);
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int data = Wire.read() & 0x00ff;
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Serial.printf("[ R ] %02X : %02X. \r\n", regAddr, data);
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return data;
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}
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void WriteRelayNumber( int number, int state )
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{
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int StateFromDevice = readRelayReg(0x11);
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if( state == 0 )
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{
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StateFromDevice &= ~( 0x01 << number );
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}
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else
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{
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StateFromDevice |= ( 0x01 << number );
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}
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WriteRelayReg(0x11,StateFromDevice);
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}
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void setup() {
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// put your setup code here, to run once:
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M5.begin(true, true, true, true);
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M5.Lcd.setCursor(90, 0, 4);
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M5.Lcd.setTextColor(TFT_GREEN, TFT_BLACK);
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M5.Lcd.print("4-RELAY UNIT");
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M5.Lcd.setCursor(0, 220, 2);
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M5.Lcd.print("Independent Switch");
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M5.Lcd.setCursor(130, 220, 2);
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M5.Lcd.print("LED Sync/Async");
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M5.Lcd.setCursor(250, 220, 2);
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M5.Lcd.print("ALL Relay");
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M5.Lcd.setCursor(20, 50, 4);
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M5.Lcd.print("Relay State: ");
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M5.Lcd.setCursor(20, 80, 4);
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M5.Lcd.print("Sync Mode: ");
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readRelayReg(0x10);
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readRelayReg(0x11);
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WriteRelayReg(0x10,1);
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WriteRelayReg(0x11,0);
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//WriteRelayNumber(0,0);
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}
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int count_i = 0;
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bool flag_led, flag_relay = false;
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void loop() {
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if(M5.BtnA.wasPressed()){
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M5.Lcd.fillRect(160, 50, 100, 20, TFT_BLACK);
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M5.Lcd.setCursor(160, 50, 4);
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M5.Lcd.printf("%d ON", count_i);
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WriteRelayReg(0x11,(0x01 << count_i));
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count_i++;
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if( count_i >= 4 ) count_i = 0;
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}
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if(M5.BtnB.wasPressed()){
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M5.Lcd.fillRect(160, 80, 100, 20, TFT_BLACK);
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if(!flag_led){
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M5.Lcd.setCursor(160, 80, 4);
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M5.Lcd.print("Async");
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WriteRelayReg(0x10, 0);
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}else {
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M5.Lcd.setCursor(160, 80, 4);
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M5.Lcd.print("Sync");
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WriteRelayReg(0x10, 1);
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}
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flag_led = !flag_led;
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}
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if(M5.BtnC.wasPressed()){
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M5.Lcd.fillRect(160, 50, 100, 20, TFT_BLACK);
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for(int i=0; i<4; i++){
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if(!flag_relay) {
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M5.Lcd.setCursor(160, 50, 4);
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M5.Lcd.print("ON");
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WriteRelayNumber(i, 1);
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}else {
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M5.Lcd.setCursor(160, 50, 4);
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M5.Lcd.print("OFF");
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WriteRelayNumber(i, 0);
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}
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}
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flag_relay = !flag_relay;
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}
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M5.update();
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}

‎examples/Unit/ACCEL_ADXL345/ACCEL_ADXL345.ino‎

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/*
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Description: Read ACCEL Unit three-axis acceleration
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Please install library before compiling:
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Arduino-ADXL345: https://github.com/jakalada/Arduino-ADXL345
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*/
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#include <M5Core2.h>
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#include <ADXL345.h>
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ADXL345 accel(ADXL345_ALT);
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void setup() {
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// put your setup code here, to run once:
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M5.begin();
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Wire.begin();
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M5.Lcd.setCursor(140, 10, 4);
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M5.Lcd.println("ACC");
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M5.Lcd.setCursor(40, 100); M5.Lcd.print(" x ");
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M5.Lcd.setCursor(140, 100); M5.Lcd.print(" y ");
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M5.Lcd.setCursor(240, 100); M5.Lcd.print(" z ");
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byte deviceID = accel.readDeviceID();
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if (deviceID != 0) {
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Serial.print("0x");
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Serial.print(deviceID, HEX);
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Serial.println("");
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} else {
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Serial.println("read device id: failed");
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while(1) {
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delay(100);
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}
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}
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// Data Rate
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// - ADXL345_RATE_3200HZ: 3200 Hz
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// - ADXL345_RATE_1600HZ: 1600 Hz
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// - ADXL345_RATE_800HZ: 800 Hz
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// - ADXL345_RATE_400HZ: 400 Hz
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// - ADXL345_RATE_200HZ: 200 Hz
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// - ADXL345_RATE_100HZ: 100 Hz
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// - ADXL345_RATE_50HZ: 50 Hz
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// - ADXL345_RATE_25HZ: 25 Hz
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// - ...
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if (!accel.writeRate(ADXL345_RATE_200HZ)) {
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Serial.println("write rate: failed");
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while(1) {
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delay(100);
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}
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}
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// Data Range
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// - ADXL345_RANGE_2G: +-2 g
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// - ADXL345_RANGE_4G: +-4 g
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// - ADXL345_RANGE_8G: +-8 g
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// - ADXL345_RANGE_16G: +-16 g
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if (!accel.writeRange(ADXL345_RANGE_16G)) {
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Serial.println("write range: failed");
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while(1) {
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delay(100);
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}
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}
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if (!accel.start()) {
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Serial.println("start: failed");
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while(1) {
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delay(100);
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}
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}
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}
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void loop() {
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// put your main code here, to run repeatedly:
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if (accel.update()) {
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M5.Lcd.fillRect(0, 130, 360, 30, BLACK);
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M5.Lcd.setCursor(35, 130); M5.Lcd.print((int)(1000*accel.getX()));
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M5.Lcd.setCursor(135, 130); M5.Lcd.print((int)(1000*accel.getY()));
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M5.Lcd.setCursor(235, 130); M5.Lcd.print((int)(1000*accel.getZ()));
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//M5.Lcd.setCursor(300, 130); M5.Lcd.print("mg");
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} else {
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Serial.println("update failed");
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while(1) {
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delay(100);
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}
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}
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delay(100);
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}

‎examples/Unit/ADC_ADS1100/ADC_ADS1100.ino‎

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/*
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Description: Use ADC Unit to convert 0 ~ 12V analog voltage into 16-bit data and display it on the screen.
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*/
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#include <M5Core2.h>
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#include <Wire.h>
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#include "ADS1100.h"
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ADS1100 ads;
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void setup(void)
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{
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M5.begin(true, false, false);
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Serial.begin(115200);
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M5.Lcd.fillScreen(BLACK);
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M5.Lcd.setTextColor(ORANGE);
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// The address can be changed making the option of connecting multiple devices
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ads.getAddr_ADS1100(ADS1100_DEFAULT_ADDRESS); // 0x48, 1001 000 (ADDR = GND)
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// The ADC gain (PGA), Device operating mode, Data rate
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// can be changed via the following functions
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ads.setGain(GAIN_ONE); // 1x gain(default)
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// ads.setGain(GAIN_TWO); // 2x gain
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// ads.setGain(GAIN_FOUR); // 4x gain
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// ads.setGain(GAIN_EIGHT); // 8x gain
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ads.setMode(MODE_CONTIN); // Continuous conversion mode (default)
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// ads.setMode(MODE_SINGLE); // Single-conversion mode
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ads.setRate(RATE_8); // 8SPS (default)
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// ads.setRate(RATE_16); // 16SPS
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// ads.setRate(RATE_32); // 32SPS
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// ads.setRate(RATE_128); // 128SPS
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ads.setOSMode(OSMODE_SINGLE); // Set to start a single-conversion
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ads.begin();
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}
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void loop(void)
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{
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byte error;
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int8_t address;
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address = ads.ads_i2cAddress;
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// The i2c_scanner uses the return value of
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// the Write.endTransmisstion to see if
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// a device did acknowledge to the address.
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Wire.beginTransmission(address);
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error = Wire.endTransmission();
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if (error == 0)
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{
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int16_t result;
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Serial.println("Getting Differential Reading from ADS1100");
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Serial.println(" ");
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result = ads.Measure_Differential();
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Serial.print("Digital Value of Analog Input between Channel 0 and 1: ");
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Serial.println(result);
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M5.Lcd.fillScreen(BLACK);
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char data[20] = { 0 };
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sprintf(data, "%d", result);
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M5.Lcd.drawCentreString(data, 160, 100, 4);
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Serial.println(" ");
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Serial.println(" *************************** ");
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Serial.println(" ");
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}
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else
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{
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Serial.println("ADS1100 Disconnected!");
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Serial.println(" ");
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Serial.println(" ************ ");
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Serial.println(" ");
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M5.Lcd.setTextFont(4);
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M5.Lcd.setTextColor(TFT_WHITE, TFT_BLACK);
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M5.Lcd.drawString("No Found ADC sensor.",20, 100, 4);
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}
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delay(1000);
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}

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