NixieTubeClock/Nixie_Firmware_Mbed/main.cpp

#include "mbed.h"
#include "main.h"
#include "SWO.h"
#include "pca9685.h"
#include "tusb322.h"
#include "ds3231.h"
#include "ioc.h"
#include "animation.h"

I2C i2c(PA_10, PA_9);
// SWO_Channel swo("swo");

bool LED;

void RtcCallback(void) {
    LED = !LED;

    LED_SetOutput(LED);
}

int main() {
    
    // Start I2C at 400kHz for DS3231 
    i2c.frequency(400000);
    
    // Start with HV PSU disabled
    HV_EnableOutput(false);
    
    TUSB322_Init();
    PCA9685_Init();
    DS3231_Init(RtcCallback);
    
    // Enable HV PSU
    HV_EnableOutput(true);
    
    // Set PCA9685 input voltage to highest possible
    PCA9685_SetVoltage(1.0);
    
    // swo.printf("CPU SystemCoreClock is %d Hz\r\n", SystemCoreClock);
    
    // Bump I2C frequency to 1MHz for PCA9685
    // i2c.frequency(1000000);

    // DS3231_SetTime(0, 55, 6, true);
    // DS3231_SetDate(0, 2, 12, 18, 0);

    int currMinute = 0, currHour = 0;
    int nextSecond, nextMinute, nextHour;

    while(1) {
            
        DS3231_GetTime(&nextSecond, &nextMinute, &nextHour);

        if (nextMinute != currMinute) {

            PCA9685_SetDigit(3, currMinute % 10, PCA9685_Min_Brightness);
            PCA9685_SetDigit(2, currMinute / 10, PCA9685_Min_Brightness);

            PCA9685_SetDigit(3, nextMinute % 10, PCA9685_Max_Brightness);
            PCA9685_SetDigit(2, nextMinute / 10, PCA9685_Max_Brightness);

            currMinute = nextMinute;
        }

        if (nextHour != currHour) {

            PCA9685_SetDigit(1, currHour % 10, PCA9685_Min_Brightness);
            PCA9685_SetDigit(0, currHour / 10, PCA9685_Min_Brightness);

            PCA9685_SetDigit(1, nextHour % 10, PCA9685_Max_Brightness);
            PCA9685_SetDigit(0, nextHour / 10, PCA9685_Max_Brightness);

            currHour = nextHour;
        }

        wait(0.1);

        // Animate_Cycle_Basic();
        // Animate_Cycle_Analog();
        // Animate_Cycle_Low_Pwm();
        // Animate_Cycle_Pwm();
        // Animate_Cycle_Fade();
        // Animate_Cycle_Fade_Random();
        // Animate_Cycle_Fast();
        // Animate_Cycle_Fast_Random();
    }
}

void I2C_Write(int DeviceAddress, char RegAddress, char *Data, int Length) {
    char buffer[I2C_MAX_BUFFER+1] = {0};

    if (Length > I2C_MAX_BUFFER) LED_Fault(1);

    buffer[0] = RegAddress;
    memcpy(&buffer[1], Data, Length);

    i2c.write(DeviceAddress << 1, buffer, Length + 1);
}

void I2C_Read(int DeviceAddress, char RegAddress, char *Data, int Length) {
    
    i2c.write(DeviceAddress << 1, &RegAddress, 1);
    i2c.read(DeviceAddress << 1, Data, Length);
}