AdaptiveBrightness/AdaptiveBrightnessFirmware/Src/main.cpp

#include <array>

#include <cstdint>
#include <cstdio>

#include "init.h"
#include "light_sensors.hpp"
#include "terminal.hpp"
#include "uart.hpp"

using serial_t = uart::Vcp<>;

static volatile bool g_error = false;

extern "C" void Error_Handler(void)
{
    g_error = true;
}

static inline void initializeHardware()
{
    serial_t serial;

    do {
        g_error = false;
        init();
        serial.init();
        if(g_error)
            HAL_GPIO_WritePin(RED_LED_GPIO_Port, RED_LED_Pin, GPIO_PIN_RESET);
        else
            HAL_GPIO_WritePin(RED_LED_GPIO_Port, RED_LED_Pin, GPIO_PIN_SET);
    } while(g_error);
}

int main()
{
    initializeHardware();

    HAL_GPIO_WritePin(RED_LED_GPIO_Port, RED_LED_Pin, GPIO_PIN_SET);
    HAL_GPIO_WritePin(GREEN_LED_GPIO_Port, GREEN_LED_Pin, GPIO_PIN_RESET);
    HAL_GPIO_WritePin(BLUE_LED_GPIO_Port, BLUE_LED_Pin, GPIO_PIN_SET);
    HAL_Delay(1000);
    HAL_GPIO_WritePin(RED_LED_GPIO_Port, RED_LED_Pin, GPIO_PIN_SET);
    HAL_GPIO_WritePin(GREEN_LED_GPIO_Port, GREEN_LED_Pin, GPIO_PIN_SET);
    HAL_GPIO_WritePin(BLUE_LED_GPIO_Port, BLUE_LED_Pin, GPIO_PIN_SET);

    serial_t serial;
    LightSensors lightSensors;

    while(true) {
        const auto ldrValues = lightSensors.getValues();

        std::array<char, 32> printBuffer;

        for(uint8_t i = 0; i < ldrValues.size(); ++i) {
            const auto ldrID = i + 1;
            const auto percentage = ldrValues[i] * 100 / 0xFFF;
            const auto bufLen = std::sprintf(printBuffer.data(), "LDR%d: %04hu - %03d%%\r\n%s", ldrID, ldrValues[i], percentage, (i == 2) ? "\r\n" : "");
            if(bufLen > 0) {
                HAL_GPIO_WritePin(BLUE_LED_GPIO_Port, BLUE_LED_Pin, GPIO_PIN_RESET);
                serial.txString(printBuffer.data());
                serial.flushTx();
                HAL_GPIO_WritePin(BLUE_LED_GPIO_Port, BLUE_LED_Pin, GPIO_PIN_SET);
            }
        }

        HAL_Delay(1000);
    }

    return 0;
}