Changeset - f778f20fe9ed
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Ethan Zonca - 10 years ago 2014-08-21 22:07:24
ez@ethanzonca.com
Messing with SPI
1 file changed with 30 insertions and 50 deletions:
main.c
30
50
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main.c
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@@ -21,49 +21,49 @@
 
#define SW_RIGHT GPIOB, GPIO_Pin_4
 
 
// USB Supporting Vars
 
extern __IO uint8_t Receive_Buffer[64];
 
extern __IO  uint32_t Receive_length ;
 
extern __IO  uint32_t length ;
 
uint8_t Send_Buffer[64];
 
uint32_t packet_sent=1;
 
uint32_t packet_receive=1;
 
 
 
char* itoa(int i, char b[]){
 
    char const digit[] = "0123456789";
 
    char* p = b;
 
    if(i<0){
 
        *p++ = '-';
 
        i *= -1;
 
    }
 
    int shifter = i;
 
    do{ //Move to where representation ends
 
        ++p;
 
        shifter = shifter/10;
 
    }while(shifter);
 
    *p = '\0';
 
    do{ //Move back, inserting digits as u go
 
    do{ //Move back, inserting digits as you go
 
        *--p = digit[i%10];
 
        i = i/10;
 
    }while(i);
 
    return b;
 
}
 
 
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();
 
@@ -78,115 +78,119 @@ int main(void)
 
    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 = -231;
 
 
    while(1)
 
    {
 
        temp = SPI_I2S_ReceiveData(SPI2);
 
        //ssd1306_DrawString("Temp: ", 1, 40);
 
        char tempstr[5];
 
        itoa(temp, tempstr);
 
        ssd1306_DrawString("Temp: ", 3, 40);
 
        //char test = temp + 0x30;
 
        //sprintf(tempstr, "%d", test);
 
        ssd1306_DrawString(tempstr, 3, 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) {
 
                toggle = ! toggle;
 
            }
 
            else  {
 
                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
 
    // Assert CS
 
    GPIO_ResetBits(MAX_CS);
 
    Delay(50);
 
 
    // Assert CS
 
    // This may not clock at all... might need to send 16 bits first
 
    uint8_t retval = 0;//SPI_I2S_ReceiveData(SPI2);
 
    SPI_I2S_SendData(SPI2, 0xAA); // send dummy data
 
    SPI_I2S_SendData(SPI2, 0xAA); // send dummy data
 
    uint16_t retval = SPI_I2S_ReceiveData(SPI2);
 
 
    char tempstr[9];
 
    itoa(retval, tempstr);
 
    ssd1306_DrawString("Temp: ", 1, 40);
 
    ssd1306_DrawString(tempstr, 1, 70);
 
 
 
    // Deassert CS
 
    GPIO_SetBits(MAX_CS);
 
 
    if((!retval || (temp & 0x2) != 0))
 
        return; // Comms error - this is happening right now
 
    {
 
        ssd1306_DrawString("!TempCOMMS", 3, 35);
 
        //return; // Comms error - this is happening right now
 
    }
 
 
    if((temp & 0x4)!= 0)
 
        return; // Open thermocouple
 
 
    else if((temp & 0x4)!= 0)
 
    {
 
        ssd1306_DrawString("!OpenThermocouple", 3, 40);
 
        //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,
 
@@ -371,64 +375,64 @@ void Delay(__IO uint32_t nTime)
 
  * @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_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
 
    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
 
    SPI_InitStructure.SPI_CRCPolynomial = 7;
 
    SPI_Init(SPI1, &SPI_InitStructure);
 
    SPI_Cmd(SPI1, ENABLE);           /* Enable the SPI  */
 
 
    // MAX IC
 
    //SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Rx;
 
    SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Rx;
 
    SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
 
    SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b; // Andysworkshop
 
    SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; // From andysworkshop
 
    SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge; // same
 
    // Can be used for CS... SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
 
    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64;
 
    //SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
 
    //SPI_InitStructure.SPI_CRCPolynomial = 7;
 
    SPI_InitStructure.SPI_CPOL = SPI_CPOL_High; // From andysworkshop
 
    SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; // same
 
    SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
 
    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_128;
 
    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
 
    SPI_InitStructure.SPI_CRCPolynomial = 7;
 
    SPI_Init(SPI2, &SPI_InitStructure);
 
    SPI_Cmd(SPI2, ENABLE);           /* Enable the SPI */
 
}
 
 
void init_gpio(void) {
 
 
 GPIO_InitTypeDef GPIO_InitStruct;
 
 
  // Enable SPI clocks
 
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
 
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
 
 
  // Enable GPIO clocks
 
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC|RCC_AHBPeriph_GPIOB|RCC_AHBPeriph_GPIOA, ENABLE);
 
 
  // Enable DMA clocks (Is AHB even the right thing???)
 
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); // EMZ TODO get the right ones
 
 
  /*Configure GPIO pin : PC */
 
  GPIO_InitStruct.GPIO_Pin = GPIO_Pin_13;
 
  GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
 
  GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
 
  GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
 
  GPIO_InitStruct.GPIO_Speed = GPIO_Speed_400KHz;
 
@@ -504,55 +508,31 @@ void init_gpio(void) {
 
  GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
 
  GPIO_InitStruct.GPIO_Speed = GPIO_Speed_10MHz;
 
  GPIO_Init(GPIOB, &GPIO_InitStruct);
 
 
 
  /*Configure GPIO pin alternate function */
 
  GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_SPI2);
 
 
  /*Configure GPIO pin alternate function */
 
  GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_SPI2);
 
 
  /*Configure GPIO pin alternate function */
 
  GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_SPI2);
 
 
  /** USB GPIO Configuration
 
  PA11   ------> USB_DM
 
  PA12   ------> USB_DP
 
  */
 
 
  /*Enable or disable the AHB peripheral clock */
 
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
 
 
  /*Configure GPIO pin : PA */
 
  GPIO_InitStruct.GPIO_Pin = GPIO_Pin_11|GPIO_Pin_12;
 
  GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
 
  GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
 
  GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
 
  GPIO_InitStruct.GPIO_Speed = GPIO_Speed_400KHz;
 
  GPIO_Init(GPIOA, &GPIO_InitStruct);
 
}
 
 
 
 
 
 
#ifdef  USE_FULL_ASSERT
 
 
/**
 
  * @brief  Reports the name of the source file and the source line number
 
  *   where the assert_param error has occurred.
 
  * @param  file: pointer to the source file name
 
  * @param  line: assert_param error line source number
 
  * @retval None
 
  */
 
void assert_failed(uint8_t* file, uint32_t line)
 
{
 
  /* User can add his own implementation to report the file name and line number,
 
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
 
 
  /* Infinite loop */
 
  while (1)
 
  {}
 
}
 
#endif
 
 
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