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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@@ @@ -49,6 +49,56 @@ char* itoa(int16_t i, char b[]){ @@
     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
@@ @@ -89,9 +139,7 @@ int main(void) @@
     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;
@@ @@ -109,24 +157,12 @@ int main(void) @@
         // 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);
@@ @@ -134,16 +170,12 @@ int main(void) @@
+    }
+}
 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);
@@ @@ -159,19 +191,14 @@ void process() @@
     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;
+    }
@@ @@ -182,22 +209,25 @@ void process() @@
     // 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
+}
@@ @@ -222,6 +252,7 @@ uint8_t state = STATE_IDLE; @@
 // State machine
 void machine()
+{
     uint8_t last_state = state;
     switch(state)
+    {
@@ @@ -232,6 +263,13 @@ void machine() @@
             // [ 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;
@@ @@ -376,6 +414,11 @@ void machine() @@
         } break;
+    }
     if(last_state != state) {
         // Clear screen on state change
         ssd1306_block_write();
+    }
+}

ssd1306.c

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@@ @@ -652,7 +652,7 @@ const uint8_t row[4][32] = { @@
 };
-void ssd1306_test()
+void ssd1306_drawlogo()
+{
     uint8_t i = 0;
     setStartPage(3);

ssd1306.h

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@@ @@ -50,6 +50,6 @@ unsigned long ssd1306_DrawPoint(Pos_t x, @@
 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

0 comments (0 inline, 0 general)