📡Communication

Library สำหรับควบคุม I2C/TWI, LCD Display, etc.

iEE_I2C.h

https://github.com/Jiranuwat-k/iEEI2C

// Example Scan I2C Devices
#include "iEE_I2C.h"
// iEE_I2C i2c;
void ScanI2CDevices(void) {
  char sbuf[32];
  int n_devices = 0;
  uint8_t addr = 0;
  for(; addr <= 128; addr++){
    uint8_t result = i2c.StartTransmission(addr << 1);
    i2c.EndTransmission();
    if (result) { // error
      delay(10);
    } else {
      n_devices++;
      Serial.print("0x");
      Serial.println(addr,HEX);
    }
  }
  Serial.print("Devices found: ");
  Serial.println(n_devices);
  Serial.print("-------------------------------\n\n");
}
void setup(){
  Serial.begin(115200);
  i2c.begin();
}

void loop(){
  Serial.print("I2C Scan....\n");
  ScanI2CDevices();
  delay(1000);
}

iEE_I2Clcd.h

https://github.com/Jiranuwat-k/iEEI2Clcd Required : iEE_I2C.h

// Example LCD Display with I2C
#include "iEE_I2Clcd.h"
iEE_I2Clcd lcd1;
// https://maxpromer.github.io/LCD-Character-Creator/
uint16_t counter = 0;
char sbuf[20];
int WaitTime = 1000;
unsigned long LastTime = 0;
void setup(){
  Serial.begin(115200);
  lcd1.begin(0x27);
  lcd1.setCursor(0, 0);
  lcd1.print("iEE_I2Clcd.h");
  LastTime = millis();
}
void loop(){
  if(millis() - LastTime >= WaitTime){
    sprintf( sbuf, "Count: %05u", counter++);
    lcd1.setCursor(0, 1);
    lcd1.print(sbuf);
    LastTime = millis();
  }
}