SystemInit();

    init_gpio();

    Set_USBClock();

    USB_Interrupts_Config();

    GPIO_SetBits(LED_POWER);

    RCC_ClocksTypeDef RCC_Clocks;

    // SysTick end of count event each 1ms

    RCC_GetClocksFreq(&RCC_Clocks);

    SysTick_Config(RCC_Clocks.HCLK_Frequency / 1000);

    GPIO_ResetBits(LED_STAT);

    Delay(100);

    //ssd1306_Init();

    //ssd1306_DrawPoint(3,3,1);

    //ssd1306_DrawPoint(5,5,0);

    GPIO_SetBits(LED_POWER);

    Delay(500);

    GPIO_ResetBits(LED_POWER);

    init_spi();

    while(1)

   {  

        // Process sensor inputs [TODO: 5hz?]

        process();

    uint8_t retval = SPI_I2S_ReceiveData(SPI2);

    // Deassert CS

    GPIO_SetBits(MAX_CS);

    if((!retval || (temp & 0x2) != 0))

    if((temp & 0x4)!= 0)

        return; // Open thermocouple

    temp = (temp & 0x7FF8) >> 5;

    // TODO: Add calibration offset (linear)

    // Perform PID calculations

    // Write output to SSR

            // N/A

        } break;

        // Something is terribly wrong

        {

            state = STATE_IDLE;

        } break;

    }