therm Changeset - e0a38751daed · protofusion repositories

Changeset - e0a38751daed

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Ethan Zonca - 10 years ago 2014-08-23 23:01:14
ez@ethanzonca.com

Display moved to states, refactor test to displaylogo

3 files changed with 87 insertions and 44 deletions:

main.c

ssd1306.c

ssd1306.h

0 comments (0 inline, 0 general)

main.c

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@@ @@ -28,231 +28,269 @@ uint8_t Send_Buffer[64]; @@
 uint32_t packet_sent=1;
 uint32_t packet_receive=1;
 char* itoa(int16_t i, char b[]){
     char const digit[] = "0123456789";
     char* p = b;
     if(i<0){
         *p++ = '-';
         i *= -1;
+    }
     uint16_t shifter = i;
     do{ //Move to where representation ends
         ++p;
         shifter = shifter/10;
     }while(shifter);
     *p = '\0';
     do{ //Move back, inserting digits as you go
         *--p = digit[i%10];
         i = i/10;
     }while(i);
     return b;
+}
 char* itoa_fp(int16_t i, uint8_t frac, char b[]){
     char const digit[] = "0123456789";
     // set p to beginning of char array
     char* p = b;
     // If negative, set current char to '-' and inc, unnegate number
     if(i<0){
         *p++ = '-';
         i *= -1;
+    }
     // Init shifter to numeric value
     uint16_t shifter = i;
     uint16_t frac_shifter = frac;
     // Iterate through 10s places, incrementing text pointer as we go
     do{
         ++p;
         shifter = shifter/10;
     }while(shifter);
     ++p; // increment for decimal point
     do{
         ++p;
         frac_shifter = frac_shifter/10;
     }while(frac_shifter);
     // Null-terminate the string
     *p = '\0';
     // Go backwards and write out fractional digits
     do{
         *--p = digit[frac%10];
         frac = frac/10;
     }while(frac);
     *--p = '.'; // insert decimal point
     // Go backwards and write out remaining digits
     do{
         *--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();
     //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 = -231;
     while(1)
+    {
         //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_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) {
                 GPIO_SetBits(GPIOB, GPIO_Pin_13);
                 toggle = ! toggle;
+            }
             else  {
                 GPIO_ResetBits(GPIOB, GPIO_Pin_13);
                 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 temperature and update global temp vars
 int16_t temp = 0;
 uint8_t temp_frac = 0;
 void update_temp() {
     // Assert CS
     GPIO_ResetBits(MAX_CS);
     Delay(1);
     // This may not clock at all... might need to send 16 bits first
     SPI_I2S_SendData(SPI2, 0xAAAA); // send dummy data
     //SPI_I2S_SendData(SPI2, 0xAA); // send dummy data
     uint16_t temp_pre = SPI_I2S_ReceiveData(SPI2);
     if(temp_pre & 0b0000000000000010) {
         ssd1306_DrawString("Fatal Error", 3, 35);
+    }
     else if(temp_pre & 0b0000000000000001) {
         ssd1306_DrawString("TC Fault", 3, 35);
+    }
     else {
         ssd1306_DrawString("TempSense OK", 3, 35);
+    }
     uint8_t sign = temp >> 15;// top bit is sign
     temp_pre = temp_pre >> 2; // Drop 2 lowest bits
     uint8_t frac = temp_pre & 0b11; // get fractional part
     frac *= 25; // each bit is .25 a degree, up to fixed point
     temp_frac = temp_pre & 0b11; // get fractional part
     temp_frac *= 25; // each bit is .25 a degree, up to fixed point
     temp_pre = temp_pre >> 2; // Drop 2 fractional bits
     int16_t temp = 0;
     if(sign) {
         temp = -temp_pre;
+    }
     else {
         temp = temp_pre;
+    }
     // Deassert CS
     Delay(1);
     GPIO_SetBits(MAX_CS);
+}
     if(temp > 0) {
         GPIO_SetBits(LED_STAT);
+    }
     char tempstr[9];
     itoa(temp_pre, tempstr);
     ssd1306_DrawString("Temp: ", 1, 40);
     ssd1306_DrawString("    ", 1, 70);
     ssd1306_DrawString(tempstr, 1, 70);
     itoa(frac, tempstr);
     ssd1306_DrawString("  ", 1, 90);
     ssd1306_DrawString(tempstr, 1, 90);
 int32_t setpoint = 0;
 int32_t p = 1;
 int32_t i = 1;
 int32_t d = 1;
 // Process things
 void process()
+{
     update_temp(); // Read MAX31855
     // TODO: Add calibration offset (linear)
     // Perform PID calculations
     //if(
     GPIO_SetBits(LED_STAT);
     // 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()
+{
     uint8_t last_state = state;
     switch(state)
+    {
         // Idle state
         case STATE_IDLE:
+        {
             // Write text to OLED
             // [ therm :: idle ]
             ssd1306_DrawString("therm :: idle ", 0, 40);
             ssd1306_drawlogo();
             char tempstr[9];
             itoa_fp(temp, temp_frac, tempstr);
             ssd1306_DrawString("Temp: ", 2, 40);
             ssd1306_DrawString("    ", 2, 70);
             ssd1306_DrawString(tempstr, 2, 72);
             // 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         ]
             ssd1306_DrawString("therm :: set p", 0, 40);
             // Button handler
             if(!GPIO_ReadInputDataBit(SW_BTN)) {
                 state = STATE_SETI;
+            }
             // Event Handler
             // N/A
@@ @@ -355,48 +393,53 @@ void machine() @@
             // [ therm : ready to steam ]
             // [ 30 => 120 C            ]
             ssd1306_DrawString("therm :: Sready", 0, 40);
             // Button handler
             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;
+    }
     if(last_state != state) {
         // Clear screen on state change
         ssd1306_block_write();
+    }
+}
 /**
   * @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)
+  {

ssd1306.c

➞

Show inline comments

@@ @@ -631,49 +631,49 @@ void setStartPage(unsigned char d) @@
 void setStartColumn(unsigned char d)
+{
     WriteCommand(0x00+d%16);    // Set Lower Column Start Address for Page Addressing Mode
     WriteCommand(0x10+d/16);    // Set Higher Column Start Address for Page Addressing Mode
                                 // Default => 0x10
+}
 const uint8_t row[4][32] = {
 {0x00,0x00,0x01,0x03,0x07,0x0F,0x1E,0x3C,0x3C,0x7C,0x7C,0x7C,0xFC,0xFF,0xFF,0xFC,0xFC,0xFC,0xFC,0xFF,0x7F,0x7F,0x7F,0x3C,0x3C,0x1C,0x0C,0x06,0x03,0x01,0x00,0x00},
 {0x0F,0x7F,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x3F,0x3F,0x7F,0xFF,0xFF,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0x7F,0x0F},
 {0xF0,0xFE,0xFF,0xFF,0xFF,0xC7,0x00,0x00,0x00,0x00,0x87,0xC7,0xC7,0xFF,0xFF,0x00,0x00,0x00,0x00,0x87,0x87,0xC7,0xC3,0x03,0x07,0x07,0x0F,0x7F,0xFF,0xFF,0xFE,0xF0},
 {0x00,0x00,0x80,0xC0,0xE0,0xF0,0xF8,0xFC,0xFC,0xFE,0xFE,0xFE,0xFF,0xFF,0xFF,0x1F,0x1F,0x1F,0x1F,0xFF,0xFE,0xFE,0xFE,0xFC,0xFC,0xF8,0xF0,0xE0,0xC0,0x80,0x00,0x00},
 };
-void ssd1306_test()
+void ssd1306_drawlogo()
+{
     uint8_t i = 0;
     setStartPage(3);
     setStartColumn(0);
     for(i = 0; i<32; i++)
+    {
         WriteData(row[0][i]);
+    }
     WriteData(0x00);
     setStartPage(2);
     setStartColumn(0);
     for(i = 0; i<32; i++)
+    {
         WriteData(row[1][i]);
+    }
     WriteData(0x00);
     setStartPage(1);
     setStartColumn(0);
     for(i = 0; i<32; i++)
+    {
         WriteData(row[2][i]);

ssd1306.h

➞

Show inline comments

@@ @@ -29,27 +29,27 @@ typedef struct _DeviceProp @@
 typedef  struct  _Device
+{
   const DeviceProp*   pDevProp;
   pfnFontDrawChar     pfnFont;
   Pos_t               curX;
   Pos_t               curY;
 }Device;
 void  ssd1306_Init(void);
 void  StartPageTransfer(void);
 extern  const DeviceProp  ssd1306_Prop;
 unsigned long ssd1306_DrawBlock(Pos_t x, Pos_t y, Pos_t cx, Pos_t cy, const unsigned char* data);
 unsigned long ssd1306_IsOn(void);
 unsigned long ssd1306_TurnOff(void);
 unsigned long ssd1306_TurnOn(void);
 unsigned char ssd1306_SetContrast(unsigned char contrast);
 unsigned char ssd1306_GetContrast();
 unsigned char* ssd1306_GetBuffer();
 unsigned long ssd1306_DrawPoint(Pos_t x, Pos_t y, Color_t color);
 void ssd1306_block_write(void);
 void ssd1306_DrawChar(char ascii, unsigned char row, unsigned char xPos);
 void ssd1306_DrawString(const char *dataPtr, unsigned char row, unsigned char xPos);
-void ssd1306_test();
+void ssd1306_drawlogo();
 #endif

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