Module13.2 PPS Arduino Tutorial

#include <M5Unified.h>
#include <M5GFX.h>
#include "M5ModulePPS.h"

M5GFX display;
M5Canvas canvas(&display);
M5ModulePPS pps;

// PPS output voltage target and current limit.
#define OUTPUT_VOLTAGE 5.0f
#define OUTPUT_CURRENT 5.0f

void setup() {
    M5.begin();
    display.begin();

    // Create a full-screen canvas for flicker-free updates.
    canvas.setFont(&fonts::FreeMonoBoldOblique12pt7b);
    canvas.createSprite(display.width(), display.height());

    // Retry until the PPS responds on the CoreS3 internal I2C bus.
    while (!pps.begin(&Wire, M5.In_I2C.getSDA(), M5.In_I2C.getSCL(),
                      MODULE_POWER_ADDR, 400000U)) {
        Serial.println("module pps connect error");
        canvas.clear(BLACK);
        canvas.setTextColor(RED);
        canvas.drawCenterString("No i2c device", display.width() / 2,
                                display.height() / 2);
        canvas.pushSprite(0, 0);
        delay(100);
    }

    // Apply both setpoints before enabling the power output.
    pps.setOutputVoltage(OUTPUT_VOLTAGE);
    pps.setOutputCurrent(OUTPUT_CURRENT);
    pps.setPowerEnable(true);
}

void loop() {
    // Read the live input, output, temperature, and regulation state.
    float voltage_readback = pps.getReadbackVoltage();
    float current_readback = pps.getReadbackCurrent();
    float temperature      = pps.getTemperature();
    float vin              = pps.getVIN();
    uint8_t mode           = pps.getMode();

    // Render one complete status frame before updating the display.
    canvas.fillSprite(BLACK);
    canvas.setFont(&fonts::FreeMonoBold12pt7b);
    canvas.setTextColor(WHITE);
    canvas.drawCenterString("Module PPS", display.width() / 2, 0);

    canvas.setCursor(10, 40);
    canvas.setTextColor(WHITE);
    canvas.printf("VIN: ");
    canvas.setTextColor(GREEN);
    canvas.printf("%.2fV", vin);

    canvas.setCursor(10, 80);
    canvas.setTextColor(WHITE);
    canvas.printf("Mode: ");
    canvas.setTextColor(GREEN);
    // The PPS switches between CV and CC automatically as the load changes.
    if (mode <= 1)
        canvas.printf("Constant Voltage");
    else
        canvas.printf("Constant Current");

    canvas.setTextColor(WHITE);
    canvas.setCursor(10, 120);
    canvas.printf("Voltage: ");
    canvas.setTextColor(GREEN);
    canvas.printf("%.2fV", voltage_readback);

    canvas.setCursor(10, 160);
    canvas.setTextColor(WHITE);
    canvas.printf("Current: ");
    canvas.setTextColor(GREEN);
    canvas.printf("%.2fA", current_readback);

    canvas.setCursor(10, 200);
    canvas.setTextColor(WHITE);
    canvas.printf("Temperature: ");
    canvas.setTextColor(GREEN);
    canvas.printf("%.2fC", temperature);

    canvas.pushSprite(0, 0);
}