therm Changeset - 425d70b8073e · protofusion repositories

Changeset - 425d70b8073e

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Merge cortex-f0

0 3 0

Ethan Zonca - 10 years ago 2015-01-02 23:41:03
ez@ethanzonca.com

Merge in multiple setpoints, fahrenheit support, tc error page to f0 branch

3 files changed with 157 insertions and 11 deletions:

Makefile

eeprom_min.h

main.c

154

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Makefile

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@@ @@ -82,13 +82,13 @@ CDEFS+=-DMANGUSTA_DISCOVERY @@
 # EMZ FIXME
 CDEFS+=-DHSE_VALUE=8000000
 #EMZ Optimized:
-MCUFLAGS=-mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections
+MCUFLAGS=-mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections -mfloat-abi=soft
 # Default:  MCUFLAGS=-mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections
 #MCUFLAGS=-mcpu=cortex-m4 -mthumb -mlittle-endian -mfpu=fpa -mfloat-abi=hard -mthumb-interwork
 #MCUFLAGS=-mcpu=cortex-m4 -mfpu=vfpv4-sp-d16 -mfloat-abi=hard
 COMMONFLAGS=-O$(OPTLVL) -g -Wall

eeprom_min.h

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@@ @@ -10,12 +10,14 @@ @@
 #define EEPROM_ADDR_K_I			0x0028
 #define EEPROM_ADDR_K_D			0x002C
 #define EEPROM_ADDR_BREWTEMP		0x0030
 #define EEPROM_ADDR_STEAMTEMP		0x0034
 #define EEPROM_ADDR_UNITS		0x0038
 void Minimal_EEPROM_Unlock(void);
 void Minimal_EEPROM_Lock(void);
 FLASH_Status Minimal_FLASH_GetStatus(void);
 FLASH_Status Minimal_FLASH_WaitForLastOperation(uint32_t Timeout);
 void Minimal_EEPROM_ProgramWord(uint32_t Address, uint32_t Data);

main.c

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@@ @@ -20,19 +20,27 @@ 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;
 enum tempunits {
     TEMP_UNITS_CELSIUS = 0,
     TEMP_UNITS_FAHRENHEIT,
 };
 // Globalish setting vars
 uint8_t boottobrew = 0;
 uint8_t temp_units = TEMP_UNITS_CELSIUS;
 uint16_t windup_guard = 1;
 uint16_t k_p = 1;
 uint16_t k_i = 1;
 uint16_t k_d = 1;
 uint8_t ignore_tc_error  = 0;
 // ISR ticks var
 volatile uint32_t ticks = 0;
 int16_t setpoint_brew = 0;
 int16_t setpoint_steam = 0;
@@ @@ -40,19 +48,23 @@ int16_t setpoint_steam = 0; @@
 enum state {
     STATE_IDLE = 0,
     STATE_SETP,
     STATE_SETI,
     STATE_SETD,
     STATE_SETSTEPS,
     STATE_SETWINDUP,
     STATE_SETBOOTTOBREW,
     STATE_SETUNITS,
     STATE_PREHEAT_BREW,
     STATE_MAINTAIN_BREW,
     STATE_PREHEAT_STEAM,
     STATE_MAINTAIN_STEAM,
     STATE_TC_ERROR
 };
 uint8_t state = STATE_IDLE;
 static __IO uint32_t TimingDelay;
@@ @@ -127,35 +139,44 @@ int main(void) @@
         // Run state machine
         machine();
+    }
+}
 // Read temperature and update global temp vars
-int16_t temp = 0;
+int32_t temp = 0;
 uint8_t temp_frac = 0;
 uint8_t state_resume = 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", 2, 35);
         ssd1306_DrawString("Fatal Error", 3, 35);
         state = STATE_TC_ERROR;
+    }
     else if(temp_pre & 0b0000000000000001) {
         ssd1306_DrawString("Error: No TC", 2, 40);
     else if(temp_pre & 0b0000000000000001 && !ignore_tc_error) {
         state_resume = state;
         state = STATE_TC_ERROR;
         temp = 0;
         temp_frac = 0;
+    }
     else
+    {
         if(state == STATE_TC_ERROR)
+        {
             state = state_resume;
             ssd1306_clearscreen();
+        }
         uint8_t sign = temp >> 15;// top bit is sign
         temp_pre = temp_pre >> 2; // Drop 2 lowest bits
         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
@@ @@ -163,12 +184,24 @@ void update_temp() { @@
         if(sign) {
             temp = -temp_pre;
+        }
         else {
             temp = temp_pre;
+        }
         if(temp_units == TEMP_UNITS_FAHRENHEIT) {
             temp *= 9; // fixed point mul by 1.8
             temp /= 5;
             temp += 32;
             temp_frac *= 9;
             temp_frac /= 5;
             temp_frac += 32;
             temp += temp_frac/100; // add overflow to above
             temp_frac %= 100;
+        }
+    }
     // Deassert CS
     delay(1);
     GPIO_SetBits(MAX_CS);
+}
@@ @@ -313,12 +346,13 @@ void save_settings() @@
     // Try programming a word at an address divisible by 4
     Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_BOOTTOBREW, boottobrew);
     Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_WINDUP_GUARD, windup_guard);
     Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_K_P, k_p);
     Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_K_I, k_i);
     Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_K_D, k_d);
     Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_UNITS, temp_units);
     Minimal_EEPROM_Lock();
+}
 void save_setpoints()
+{
@@ @@ -350,18 +384,34 @@ void restore_settings() @@
     while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
     setpoint_brew = (*(__IO uint32_t*)(EEPROM_BASE_ADDR + EEPROM_ADDR_BREWTEMP));
     while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
     setpoint_steam = (*(__IO uint32_t*)(EEPROM_BASE_ADDR + EEPROM_ADDR_STEAMTEMP));
     while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
     temp_units = (*(__IO uint32_t*)(EEPROM_BASE_ADDR + EEPROM_ADDR_UNITS));
     Minimal_EEPROM_Lock();
+}
 int16_t last_temp = 21245;
 ///////////////////////////////////////////////////////////////////////////////////////
 /// freaking multiple setpoint support ///
 uint8_t step_duration[10] = {0,0,0,0,0,0,0,0,0,0};
 int16_t step_setpoint[10] = {0,0,0,0,0,0,0,0,0,0};
 uint8_t final_setpoint = 0;
 // Multiple screens to set setpoint and duration on each screen
 // press center to go to the next one, and press left or right or something to confirm
 // When executing, complete on time AND(?) temperature. Maybe allow switching to OR via settings
 ////////////////////////////////////////////////////////////////////////////////////////////////
 void machine()
+{
     uint8_t last_state = state;
     uint8_t temp_changed = temp != last_temp;
     last_temp = temp;
@@ @@ -392,13 +442,13 @@ void machine() @@
             ssd1306_drawlogo();
             switch(goto_mode) {
                 case 2:
+                {
-                    ssd1306_DrawString("-> brew     ", 1, 40);
+                    ssd1306_DrawString("-> heat     ", 1, 40);
                 } break;
                 case 1:
+                {
                     ssd1306_DrawString("-> setup    ", 1, 40);
                 } break;
@@ @@ -522,12 +572,51 @@ void machine() @@
             // Event Handler
             // N/A
         } break;
         case STATE_SETSTEPS:
+        {
             // Write text to OLED
             // [ step #1:: Duration: ### ]
             // [           Setpoint: ### ]
             char tempstr[6];
             itoa(final_setpoint, tempstr);
             ssd1306_DrawString("Step #", 0, 0);
             ssd1306_DrawString(tempstr, 0, 40);
             ssd1306_DrawString("Duration: ", 0, 5);
             itoa(step_duration[final_setpoint], tempstr);
             ssd1306_DrawString(tempstr, 0, 70);
             ssd1306_DrawString("Setpoint: ", 0, 0);
             itoa(step_setpoint[final_setpoint], tempstr);
             ssd1306_DrawString(tempstr, 0, 70);
             ssd1306_DrawString("Press to accept", 3, 40);
             // Button handler - TODO: increment max_step if pressed
             // return and go to next state otherwise
             if(SW_BTN_PRESSED) {
                 state = STATE_SETSTEPS;
                 final_setpoint++;
+            }
         //    else if(SW_LEFT_PRESSED) {
         //        state++; // go to next state or something
         //    }
             else {
                 user_input(&k_p);
+            }
             // Event Handler
             // N/A
         } break;
         case STATE_SETWINDUP:
+        {
             // Write text to OLED
             // [ therm :: set windup ]
             // [ g = 12         ]
             ssd1306_DrawString("Windup Guard", 0, 40);
@@ @@ -556,28 +645,27 @@ void machine() @@
         case STATE_SETBOOTTOBREW:
+        {
             // Write text to OLED
             // [ therm :: set windup ]
             // [ g = 12         ]
-            ssd1306_DrawString("Boot to Brew", 0, 40);
+            ssd1306_DrawString("Start on Boot", 0, 40);
             ssd1306_drawlogo();
-            ssd1306_DrawString("btb=", 1, 45);
+            ssd1306_DrawString("sob=", 1, 45);
             if(boottobrew)
                 ssd1306_DrawString("Enabled ", 1, 70);
             else
                 ssd1306_DrawString("Disabled", 1, 70);
             ssd1306_DrawString("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 save_settings();
                 state = STATE_IDLE;
                 state = STATE_SETUNITS;
+            }
             else if(!GPIO_ReadInputDataBit(SW_UP)) {
                 boottobrew = 1;
+            }
             else if(!GPIO_ReadInputDataBit(SW_DOWN)) {
                 boottobrew = 0;
@@ @@ -585,12 +673,45 @@ void machine() @@
             // Event Handler
             // N/A
         } break;
         case STATE_SETUNITS:
+        {
             // Write text to OLED
             // [ therm :: set windup ]
             // [ g = 12         ]
             ssd1306_DrawString("Units: ", 0, 40);
             ssd1306_drawlogo();
             if(temp_units == TEMP_UNITS_FAHRENHEIT)
                 ssd1306_DrawString("Fahrenheit", 1, 60);
             else
                 ssd1306_DrawString("Celsius   ", 1, 60);
             ssd1306_DrawString("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 save_settings();
                 state = STATE_IDLE;
+            }
             else if(!GPIO_ReadInputDataBit(SW_UP)) {
                 temp_units = TEMP_UNITS_FAHRENHEIT;
+            }
             else if(!GPIO_ReadInputDataBit(SW_DOWN)) {
                 temp_units = TEMP_UNITS_CELSIUS;
+            }
             // Event Handler
             // N/A
         } break;
         case STATE_PREHEAT_BREW:
+        {
             // Write text to OLED
             // [ therm : preheating brew ]
             // [ 30 => 120 C             ]
             ssd1306_DrawString("Preheating...", 0, 0);
@@ @@ -689,12 +810,35 @@ void machine() @@
             // Event Handler
             // N/A
         } break;
         case STATE_TC_ERROR:
+        {
             // Write text to OLED
             // [ therm : ready to steam ]
             // [ 30 => 120 C            ]
             ssd1306_DrawString("Error:", 0, 0);
             ssd1306_DrawString("Connect thermocouple", 1, 0);
             ssd1306_DrawString("Press -> to ignore", 3, 0);
             // Button handler
             if(SW_BTN_PRESSED) {
                 state = STATE_IDLE;
+            }
             else if(SW_RIGHT_PRESSED) {
                 ignore_tc_error = 1;
                 state = STATE_IDLE;
+            }
             // Event Handler
             // Maybe handle if TC is plugged in
             // N/A
         } break;
         // Something is terribly wrong
         default:
+        {
             state = STATE_IDLE;
             pid_enabled = 0;

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