Changeset - c23168e6420f
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Ethan Zonca - 10 years ago 2014-07-17 23:18:06
ez@ethanzonca.com
Back to blinking, commented out USB initialization
1 file changed with 4 insertions and 8 deletions:
main.c
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main.c
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#include "main.h"
 
#include "stm32l100c_discovery.h"
 
#include "ssd1306.h"
 
 
// USB includes
 
#include "hw_config.h"
 
#include "usb_lib.h"
 
#include "usb_desc.h"
 
#include "usb_pwr.h"
 
 
#define LED_POWER GPIOB,GPIO_Pin_9
 
#define LED_STAT  GPIOA,GPIO_Pin_15
 
 
#define MAX_CS GPIOB,GPIO_Pin_12
 
 
// TODO: Grab buttonpresses with interrupts
 
#define SW_BTN  GPIOB, GPIO_Pin_3
 
#define SW_UP   GPIOB, GPIO_Pin_7
 
#define SW_DOWN GPIOB, GPIO_Pin_6
 
#define SW_LEFT GPIOB, GPIO_Pin_5
 
#define SW_RIGHT GPIOB, GPIO_Pin_4
 
 
 
static __IO uint32_t TimingDelay;
 
 
void init_gpio();
 
void init_spi();
 
void process();
 
void machine();
 
 
int main(void)
 
{
 
 
    // Init clocks
 
    SystemInit();
 
 
    init_gpio();
 
 
    Set_USBClock();
 
    USB_Interrupts_Config();
 
    USB_Init();
 
 
    GPIO_SetBits(LED_POWER);
 
    //USB_Init(); // freezes here... maybe clock issue?
 
 
    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);
 
 
 
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
 
 
    init_spi();
 
 
    while(1)
 
   {
 
        // 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);
 
 
        SPI_I2S_SendData(SPI2,0xFA);
 
        SPI_I2S_SendData(SPI1,0xFA);
 
 
        if(!GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_3)) {
 
            GPIO_ToggleBits(LED_STAT);
 
        }
 
 
        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
 
    // This may not clock at all... might need to send 16 bits first
 
    uint8_t retval = SPI_I2S_ReceiveData(SPI2);
 
 
    // Deassert CS
 
    GPIO_SetBits(MAX_CS);
 
 
    if((!retval || (temp & 0x2) != 0))
 
        return; // Comms error
 
        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 ]
 
 
            // Button handler
 
            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         ]
 
 
            // Button handler
 
            if(GPIO_ReadInputDataBit(SW_BTN)) {
 
                state = STATE_IDLE;
 
            }
 
 
            // Event Handler
 
            // N/A
 
 
        } break;
 
 
        case STATE_SETI:
 
        {
 
            // Write text to OLED
 
            // [ therm :: set i ]
 
            // [ i = 12         ]
 
 
            // Button handler
 
            if(GPIO_ReadInputDataBit(SW_BTN)) {
 
                state = STATE_IDLE;
 
            }
 
 
            // Event Handler
 
            // N/A
 
 
        } break;
 
 
        case STATE_SETD:
 
        {
 
            // Write text to OLED
 
            // [ therm :: set d ]
 
            // [ d = 12         ]
 
 
            // Button handler
 
            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             ]
 
 
            // Button handler
 
            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           ]
 
 
 
            // Button handler
 
            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           ]
 
 
            // Button handler
 
            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            ]
 
 
            // Button handler
 
            if(GPIO_ReadInputDataBit(SW_BTN)) {
 
                state = STATE_IDLE;
 
            }
 
 
            // Event Handler
 
            // N/A
 
 
        } break;
 
 
 
        // Something is terribly wrong
 
        deault:
 
        default:
 
        {
 
            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_64;
 
    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_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_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;
 
  GPIO_Init(GPIOC, &GPIO_InitStruct);
 
 
  /*Configure GPIO pin : PB */
 
  GPIO_InitStruct.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_10|GPIO_Pin_12
 
                          |GPIO_Pin_9;
 
  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;
 
  GPIO_Init(GPIOB, &GPIO_InitStruct);
 
 
  /*Configure GPIO pin : PA */
 
  GPIO_InitStruct.GPIO_Pin = GPIO_Pin_15;
 
  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;
 
  GPIO_Init(GPIOA, &GPIO_InitStruct);
 
 
  /*Configure GPIO pin : PB */
 
  GPIO_InitStruct.GPIO_Pin = GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6
 
                          |GPIO_Pin_7;
 
  GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;
 
  GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
 
  GPIO_Init(GPIOB, &GPIO_InitStruct);
 
 
  /** SPI1 GPIO Configuration
 
  PA5   ------> SPI1_SCK
 
  PA7   ------> SPI1_MOSI
 
  */
 
 
  /*Enable or disable the AHB peripheral clock */
 
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
 
 
  /*Configure GPIO pin : PA */
 
  GPIO_InitStruct.GPIO_Pin = GPIO_Pin_5|GPIO_Pin_7;
 
  GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
 
  GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
 
  GPIO_InitStruct.GPIO_Speed = GPIO_Speed_400KHz;
 
  GPIO_Init(GPIOA, &GPIO_InitStruct);
 
 
  /*Configure GPIO pin alternate function */
 
  GPIO_PinAFConfig(GPIOA, GPIO_PinSource5, GPIO_AF_SPI1);
 
 
  /*Configure GPIO pin alternate function */
 
  GPIO_PinAFConfig(GPIOA, GPIO_PinSource7, GPIO_AF_SPI1);
 
 
  /** SPI2 GPIO Configuration
 
  PB13   ------> SPI2_SCK
 
  PB14   ------> SPI2_MISO
 
  PB15   ------> SPI2_MOSI
 
  */
 
 
  /*Enable or disable the AHB peripheral clock */
 
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
 
 
  /*Configure GPIO pin : PB */
 
  GPIO_InitStruct.GPIO_Pin = GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
 
  GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
 
  GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
 
  GPIO_InitStruct.GPIO_Speed = GPIO_Speed_400KHz;
 
  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_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) */
 
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