Changeset - 3d43c0d055a8
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Ethan Zonca - 10 years ago 2014-08-19 22:00:18
ez@ethanzonca.com
Add some more text and stuff
1 file changed with 30 insertions and 10 deletions:
main.c
30
10
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main.c
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@@ -31,98 +31,109 @@ uint32_t packet_receive=1;
 
 
 
 
static __IO uint32_t TimingDelay;
 
 
// Move to header file
 
void init_gpio();
 
void init_spi();
 
void process();
 
void machine();
 
 
int main(void)
 
{
 
 
    // Init clocks
 
    SystemInit();
 
 
    init_gpio();
 
 
    // Init USB
 
    //Set_USBClock();
 
    //USB_Interrupts_Config();
 
    //USB_Init();
 
 
    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);
 
    GPIO_SetBits(LED_POWER);
 
    Delay(500);
 
    GPIO_ResetBits(LED_POWER);
 
 
    init_spi();
 
 
    ssd1306_Init();
 
    ssd1306_block_write();
 
    ssd1306_DrawString("therm 0.1", 0, 40);
 
    ssd1306_DrawString("Status: Idle", 2, 40);
 
  //  ssd1306_block_write();
 
    ssd1306_test();
 
 
    uint8_t toggle = 0;
 
 
    int16_t temp = 0;
 
 
    while(1)
 
   {  
 
        temp = SPI_I2S_ReceiveData(SPI2);
 
        ssd1306_DrawString("Temp: ", 1, 40);
 
 
        char tempstr[5];
 
        char test = temp + 0x30;
 
        //sprintf(tempstr, "%d", test);
 
        //ssd1306_DrawString(tempstr, 1, 70);
 
 
        //ssd1306_block_write();
 
 
        // Process sensor inputs [TODO: 5hz?]
 
        process();
 
 
        // Run state machine [TODO: 50hz?]
 
        machine(); 
 
        // probably just passed the actual port
 
 
        // TODO: Grab buttonpresses with interrupts
 
        uint8_t sw_btn = GPIO_ReadInputDataBit(SW_BTN);
 
        uint8_t sw_up = GPIO_ReadInputDataBit(SW_UP);
 
        uint8_t sw_down = GPIO_ReadInputDataBit(SW_DOWN);
 
        uint8_t sw_left = GPIO_ReadInputDataBit(SW_LEFT);
 
        uint8_t sw_right = GPIO_ReadInputDataBit(SW_RIGHT);
 
 
        if(!sw_btn) {
 
            GPIO_ToggleBits(LED_STAT);
 
            if(!toggle) {
 
                ssd1306_DrawString("________________", 3, 32);
 
                toggle = ! toggle;
 
            }
 
            else  {
 
                ssd1306_DrawString("----------------", 3, 32);
 
                toggle = ! toggle;
 
            }    
 
        }
 
 
        GPIO_SetBits(LED_POWER);
 
        Delay(50);
 
        GPIO_ResetBits(LED_POWER);
 
        Delay(50);
 
    }
 
}
 
 
int32_t temp = 0;
 
int32_t setpoint = 0;
 
int32_t p = 1;
 
int32_t i = 1;
 
int32_t d = 1;
 
 
// Process things
 
void process()
 
{
 
    // Read MAX temp sensor
 
    GPIO_ResetBits(MAX_CS);
 
 
    // Assert CS
 
@@ -133,228 +144,237 @@ void process()
 
    GPIO_SetBits(MAX_CS);
 
 
    if((!retval || (temp & 0x2) != 0))
 
        return; // Comms error - this is happening right now
 
 
    if((temp & 0x4)!= 0)
 
        return; // Open thermocouple
 
 
 
    temp = (temp & 0x7FF8) >> 5;
 
 
 
    // TODO: Add calibration offset (linear)
 
 
 
    // Perform PID calculations
 
 
    // Write output to SSR
 
}
 
 
 
 
enum state {
 
    STATE_IDLE = 0,
 
    STATE_SETP,
 
    STATE_SETI,
 
    STATE_SETD,
 
 
    STATE_PREHEAT_BREW,
 
    STATE_MAINTAIN_BREW,
 
    STATE_PREHEAT_STEAM,
 
    STATE_MAINTAIN_STEAM,
 
};
 
 
 
uint8_t state = STATE_IDLE;
 
 
// State machine
 
void machine()
 
{
 
    
 
    switch(state)
 
    {
 
        // Idle state
 
        case STATE_IDLE:
 
        {
 
            // Write text to OLED
 
            // [ therm :: idle ]
 
            ssd1306_DrawString("therm :: idle ", 0, 40);
 
 
            // Button handler
 
            if(GPIO_ReadInputDataBit(SW_BTN)) {
 
            if(!GPIO_ReadInputDataBit(SW_BTN)) {
 
                state = STATE_SETP;
 
            }
 
 
            // Event Handler
 
            // N/A
 
 
        } break;
 
 
        case STATE_SETP:
 
        {
 
            // Write text to OLED
 
            // [ therm :: set p ]
 
            // [ p = 12         ]
 
            ssd1306_DrawString("therm :: set p", 0, 40);
 
 
            // Button handler
 
            if(GPIO_ReadInputDataBit(SW_BTN)) {
 
                state = STATE_IDLE;
 
            if(!GPIO_ReadInputDataBit(SW_BTN)) {
 
                state = STATE_SETI;
 
            }
 
 
            // Event Handler
 
            // N/A
 
 
 
        } break;
 
 
        case STATE_SETI:
 
        {
 
            // Write text to OLED
 
            // [ therm :: set i ]
 
            // [ i = 12         ]
 
            ssd1306_DrawString("therm :: set i", 0, 40);
 
 
            // Button handler
 
            if(GPIO_ReadInputDataBit(SW_BTN)) {
 
                state = STATE_IDLE;
 
            if(!GPIO_ReadInputDataBit(SW_BTN)) {
 
                state = STATE_SETD;
 
            }
 
 
            // Event Handler
 
            // N/A
 
 
 
        } break;
 
 
        case STATE_SETD:
 
        {
 
            // Write text to OLED
 
            // [ therm :: set d ]
 
            // [ d = 12         ]
 
            ssd1306_DrawString("therm :: set d", 0, 40);
 
 
            // Button handler
 
            if(GPIO_ReadInputDataBit(SW_BTN)) {
 
            if(!GPIO_ReadInputDataBit(SW_BTN)) {
 
                state = STATE_IDLE;
 
            }
 
 
            // Event Handler
 
            // N/A
 
 
 
        } break;
 
 
        case STATE_PREHEAT_BREW:
 
        {
 
            // Write text to OLED
 
            // [ therm : preheating brew ]
 
            // [ 30 => 120 C             ]
 
            ssd1306_DrawString("therm :: Bpreheat", 0, 40);
 
 
            // Button handler
 
            if(GPIO_ReadInputDataBit(SW_BTN)) {
 
            if(!GPIO_ReadInputDataBit(SW_BTN)) {
 
                state = STATE_IDLE;
 
            }
 
 
            // Event Handler
 
            if(temp >= setpoint) {
 
                state = STATE_MAINTAIN_BREW;
 
            }
 
 
 
        } break;
 
 
        case STATE_MAINTAIN_BREW:
 
        {
 
            // Write text to OLED
 
            // [ therm : ready to brew ]
 
            // [ 30 => 120 C           ]
 
            ssd1306_DrawString("therm :: Bready", 0, 40);
 
 
 
            // Button handler
 
            if(GPIO_ReadInputDataBit(SW_BTN)) {
 
            if(!GPIO_ReadInputDataBit(SW_BTN)) {
 
                state = STATE_IDLE;
 
            }
 
 
            // Event Handler
 
            // N/A
 
 
 
        } break;
 
 
        case STATE_PREHEAT_STEAM:
 
        {
 
            // Write text to OLED
 
            // [ therm : preheating steam ]
 
            // [ 30 => 120 C           ]
 
            ssd1306_DrawString("therm :: Spreheat", 0, 40);
 
 
            // Button handler
 
            if(GPIO_ReadInputDataBit(SW_BTN)) {
 
            if(!GPIO_ReadInputDataBit(SW_BTN)) {
 
                state = STATE_IDLE;
 
            }
 
 
            // Event Handler
 
            if(temp >= setpoint) {
 
                state = STATE_MAINTAIN_STEAM;
 
            }
 
 
 
        } break;
 
 
        case STATE_MAINTAIN_STEAM:
 
        {
 
            // Write text to OLED
 
            // [ therm : ready to steam ]
 
            // [ 30 => 120 C            ]
 
            ssd1306_DrawString("therm :: Sready", 0, 40);
 
 
            // Button handler
 
            if(GPIO_ReadInputDataBit(SW_BTN)) {
 
            if(!GPIO_ReadInputDataBit(SW_BTN)) {
 
                state = STATE_IDLE;
 
            }
 
 
            // Event Handler
 
            // N/A
 
 
 
        } break;
 
 
 
        // Something is terribly wrong
 
        default:
 
        {
 
            ssd1306_DrawString("therm :: BAD BAD", 0, 40);
 
            state = STATE_IDLE;
 
 
        } break;
 
            
 
    }
 
}
 
 
 
/**
 
  * @brief  Inserts a delay time.
 
  * @param  nTime: specifies the delay time length, in 1 ms.
 
  * @retval None
 
  */
 
void Delay(__IO uint32_t nTime)
 
{
 
  TimingDelay = nTime;
 
  while(TimingDelay != 0);
 
}
 
 
 
/**
 
  * @brief  Decrements the TimingDelay variable.
 
  * @param  None
 
  * @retval None
 
  */
 
void TimingDelay_Decrement(void)
 
{
 
  if (TimingDelay != 0x00)
 
  { 
 
    TimingDelay--;
 
  }
 
}
 
 
 
void init_spi(void)
 
{
 
    SPI_InitTypeDef  SPI_InitStructure;
 
 
    // OLED IC
 
    SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx;
 
    SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
 
    SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
 
    SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
 
    SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
 
    SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
 
    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_16;
 
    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
 
    SPI_InitStructure.SPI_CRCPolynomial = 7;
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