Module13.2 AIN4-20mA Arduino 使用教程

#include <M5Unified.h>
#include <M5GFX.h>
#include "MODULE_4_20MA.h"

#define channel 3

M5GFX display;
MODULE_4_20MA meter;

void show_current_value(void) {
    M5.Display.fillScreen(WHITE);
    M5.Display.setCursor(0, 0);
    M5.Display.println("Module 4-20mA Demo");
    M5.Display.setCursor(0, 50);
    M5.Display.printf("CH%d Current:%.2fmA\r\n", channel,
                  (float)(meter.getCurrentValue(channel - 1)) / 100.0);
    Serial.printf("CH%d ADC_12Bits_Value:%d\r\n", channel, meter.getADC12BitsValue(channel - 1));
    M5.Display.printf("CH%d ADC_12Bits_Value:%d\r\n", channel, meter.getADC12BitsValue(channel - 1));
    M5.Display.printf("CH%d Cal_Current:%d\r\n", channel, meter.getCurrentValue(channel - 1));
}

void setup() {
    M5.begin();
    Serial.begin(115200);
    M5.Display.fillScreen(WHITE);
    M5.Display.setTextColor(BLACK);
    M5.Display.setFont(&fonts::FreeMonoBold9pt7b);
    M5.Display.setCursor(0, 0);
    M5.Display.println("Module 4-20mA Demo");
    while (!(meter.begin(&Wire, MODULE_4_20MA_ADDR, 12, 11, 100000UL))) {
        M5.Display.fillScreen(WHITE);
        M5.Display.setCursor(0, 0);
        M5.Display.println("No Module!");
    }
    Serial.printf("Firmware Version:%d.%d.%d\r\n", meter.getFirmwareVersion(),
                      meter.getI2CAddress(), meter.getFirmwareVersion());
    Serial.printf("I2C Address:%02X\r\n", meter.getI2CAddress());
    delay(500);
}

void loop() {
    show_current_value();
    delay(1000);
}