therm-ng Changeset - a710d1e0fc2a · protofusion repositories

Changeset - a710d1e0fc2a

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Ethan Zonca - 8 years ago 2017-06-23 12:25:53
ezonca@sealandaire.com

Import from old therm: menus working

13 files changed with 1267 insertions and 54 deletions:

.cproject

.settings/language.settings.xml

inc/config.h

inc/display.h

inc/gpio.h

inc/pid.h

inc/states.h

inc/system/stringhelpers.h

src/display.c

690

src/gpio.c

src/main.c

172

src/pid.c

src/system/stringhelpers.c

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.cproject

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@@ @@ -17,33 +17,33 @@ @@
 				<configuration artifactName="${ProjName}" buildArtefactType="org.eclipse.cdt.build.core.buildArtefactType.exe" buildProperties="org.eclipse.cdt.build.core.buildArtefactType=org.eclipse.cdt.build.core.buildArtefactType.exe,org.eclipse.cdt.build.core.buildType=org.eclipse.cdt.build.core.buildType.debug" cleanCommand="${cross_rm} -rf" description="" id="ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug.1538442532" name="Debug" parent="ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug">
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@@ @@ -52,8 +52,8 @@ @@
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 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/drivers/CMSIS/Include}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/drivers/CMSIS/Device/ST/STM32F3xx/Include}&quot;"/>
@@ @@ -61,7 +61,7 @@ @@
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 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/drivers/STM32F3xx_HAL_Driver/Inc}&quot;"/>
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@@ @@ -116,14 +116,14 @@ @@
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@@ @@ -139,7 +139,7 @@ @@
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@@ @@ -221,6 +221,7 @@ @@
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 							<option id="ilg.gnuarmeclipse.managedbuild.cross.option.addtools.printsize.737083294.931072004" name="Print size" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.addtools.printsize.737083294"/>
 							<targetPlatform archList="all" binaryParser="org.eclipse.cdt.core.ELF" id="ilg.gnuarmeclipse.managedbuild.cross.targetPlatform" isAbstract="false" osList="all" superClass="ilg.gnuarmeclipse.managedbuild.cross.targetPlatform"/>
 							<tool id="ilg.gnuarmeclipse.managedbuild.cross.tool.assembler.896192688" name="Cross ARM GNU Assembler" superClass="ilg.gnuarmeclipse.managedbuild.cross.tool.assembler.1885536253">
 								<inputType id="ilg.gnuarmeclipse.managedbuild.cross.tool.assembler.input.1392942558" superClass="ilg.gnuarmeclipse.managedbuild.cross.tool.assembler.input"/>
 							</tool>

.settings/language.settings.xml

➞

Show inline comments

@@ @@ -5,7 +5,7 @@ @@
 			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="1039910129683149700" id="ilg.gnuarmeclipse.managedbuild.cross.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cross ARM" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="228329417953433416" id="ilg.gnuarmeclipse.managedbuild.cross.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cross ARM" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>
@@ @@ -16,7 +16,7 @@ @@
 			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="1105339482864355034" id="ilg.gnuarmeclipse.managedbuild.cross.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cross ARM" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="266793431193090206" id="ilg.gnuarmeclipse.managedbuild.cross.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cross ARM" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>

inc/config.h

➞

Show inline comments

@@ @@ -10,6 +10,54 @@ @@
 // Temperature sensor type
 #define MAX31855_TC_SENSOR
 //#define MAX31865_RTD_SENSOR
 // Virtual serial port transmit rate
 #define VCP_TX_FREQ 1000
 // Solid-state relay maximum on-time
 #define SSR_PERIOD 200
 // Interval of PID calculations
 #define PID_PERIOD 120
 // Pin settings
 #define LED_POWER GPIOF,GPIO_PIN_0
 #define MAX_CS GPIOA,GPIO_PIN_15
 #define SW_BTN  GPIOB, GPIO_PIN_4
 #define SW_UP   GPIOB, GPIO_PIN_7
 #define SW_DOWN GPIOB, GPIO_PIN_3
 #define SW_LEFT GPIOB, GPIO_PIN_5
 #define SW_RIGHT GPIOB, GPIO_PIN_6
 #define SSR_PIN GPIOA, GPIO_PIN_1
 // Visual niceness
 #define hal_init() HAL_Init()
 // Add bootloader option to top of idle screen menu
 #define BOOTLOADER_SHORTCUT
 #define DEFAULT_BOOT_TO_BREW 0
 #define DEFAULT_TEMP_UNITS TEMP_UNITS_FAHRENHEIT
 #define DEFAULT_WINDUP_GUARD 10
 #define DEFAULT_K_P 10
 #define DEFAULT_K_I 1
 #define DEFAULT_K_D 1
 #define DEFAULT_TEMP_OFFSET 0
 #define DEFAULT_IGNORE_ERROR 0
 #define DEFAULT_SETPOINT_BREW 70
 #define DEFAULT_SETPOINT_STEAM 70
 #define DEFAULT_HYSTERESIS 1
 // Internal macros
 #define hal_init HAL_Init

inc/display.h

➞

Show inline comments

@@ new file 100644 @@
 #ifndef DISPLAY_H
 #define DISPLAY_H
 #include "states.h"
 #ifdef MAX31865_RTD_SENSOR
 #include "max31865.h"
 #endif
 void display_startup_screen();
 void display_process(therm_settings_t* set, therm_status_t* status);
 #endif

inc/gpio.h

➞

Show inline comments

@@ @@ -7,12 +7,19 @@ @@
 // Define button push
 #define SW_D_Pin GPIO_PIN_4
 #define SW_D_GPIO_Port GPIOA
 #define SW_RIGHT SW_D_GPIO_Port, SW_D_Pin
 #define SW_B_Pin GPIO_PIN_5
 #define SW_B_GPIO_Port GPIOA
 #define SW_UP SW_B_GPIO_Port, SW_B_Pin
 #define SW_A_Pin GPIO_PIN_6
 #define SW_A_GPIO_Port GPIOA
 #define SW_LEFT SW_A_GPIO_Port, SW_A_Pin
 #define SW_C_Pin GPIO_PIN_7
 #define SW_C_GPIO_Port GPIOA
 #define SW_DOWN SW_C_GPIO_Port, SW_C_Pin
 #define SW_BTN_Pin GPIO_PIN_0
 #define SW_BTN_GPIO_Port GPIOB
@@ @@ -22,6 +29,10 @@ @@
 #define LED_GPIO_Port GPIOB
 #define LED LED_GPIO_Port, LED_PIN
 void user_input(uint16_t* to_modify);
 void user_input_signed(int32_t* to_modify);
 void gpio_init(void);
 void gpio_led_blueblink(uint8_t num_blinks);

inc/pid.h

➞

Show inline comments

@@ new file 100644 @@
 #ifndef PIDS_H
 #define PIDS_H
 #include "stm32f3xx_hal.h"
 #include "states.h"
 typedef struct {
 	int16_t last_pid_temp;
 	uint8_t last_pid_temp_frac;
 	int32_t i_state;
 } pid_state_t;
 void pid_init(pid_state_t* state);
 int16_t pid_update(therm_settings_t* set, therm_status_t* status, pid_state_t* state);
 #endif

inc/states.h

➞

Show inline comments

@@ new file 100644 @@
 #ifndef STATES_H
 #define STATES_H
 #include "stm32f3xx_hal.h"
 #include "config.h"
 typedef struct {
     int32_t temp;
     uint8_t temp_frac;
     uint8_t state_resume;
     uint8_t state;
     int32_t setpoint;
     uint8_t pid_enabled;
     uint8_t error_code;
 } therm_status_t;
 typedef union
+{
      struct {
         uint32_t boottobrew;
         uint32_t temp_units;
         uint32_t windup_guard;
         uint32_t k_p;
         uint32_t k_i;
         uint32_t k_d;
         int32_t temp_offset;
         uint32_t ignore_error;
         int32_t setpoint_brew;
         int32_t setpoint_steam;
         uint32_t control_mode;
         uint32_t plant_type;
         uint32_t hysteresis;
     } val;
     uint16_t data[128];
 } therm_settings_t;
 enum tempunits {
     TEMP_UNITS_CELSIUS = 0,
     TEMP_UNITS_FAHRENHEIT,
 };
 enum state {
     STATE_IDLE = 0,
     STATE_SETMODE,
     STATE_SETPLANTTYPE,
     STATE_SETHYSTERESIS,
     STATE_SETP,
     STATE_SETI,
     STATE_SETD,
     STATE_SETSTEPS,
     STATE_SETWINDUP,
     STATE_SETBOOTTOBREW,
     STATE_SETUNITS,
     STATE_SETTEMPOFFSET,
     STATE_PREHEAT,
     STATE_MAINTAIN,
     STATE_TC_ERROR,
 	STATE_RESET,
 };
 enum control_mode {
     MODE_PID = 0,
     MODE_THERMOSTAT,
 };
 enum plant_type {
     PLANT_HEATER = 0,
     PLANT_COOLER,
 };
 enum GOTO_MODE {
 	#ifdef BOOTLOADER_SHORTCUT
 	MODE_BOOTLOADER,
 	#endif
 	MODE_HEAT,
 	MODE_SETUP,
 	MODE_RESET,
 	MODE_SIZE,
 };
 enum RESET_MODE {
 	RESET_REBOOT = 0,
 	RESET_DEFAULTS,
 	RESET_BOOTLOADER,
 	RESET_EXIT,
 	RESET_SIZE,
 };
 #endif

inc/system/stringhelpers.h

➞

Show inline comments

@@ new file 100644 @@
 #ifndef STRINGHELPERS_H
 #define STRINGHELPERS_H
 char* zitoa(int16_t i, char b[]);
 char* itoa_fp(int16_t i, uint8_t frac, char b[]);
 #endif

src/display.c

➞

Show inline comments

@@ new file 100644 @@
 #include "display.h"
 #include "gpio.h"
 #include "ssd1306.h"
 #include "system/stringhelpers.h"
 #include "flash.h"
 // Private function prototypes
 static void draw_setpoint(therm_status_t* status);
 // Button transition variables
 static uint8_t sw_btn_last = 0;
 static uint8_t sw_up_last = 0;
 static uint8_t sw_down_last = 0;
 static uint8_t sw_left_last = 0;
 static uint8_t sw_right_last = 0;
 // Buttonpress macros
 #define SW_BTN_PRESSED (sw_btn_last == 0 && sw_btn == 1) // rising edge on buttonpress
 #define SW_UP_PRESSED (sw_up_last == 0 && sw_up == 1)
 #define SW_DOWN_PRESSED (sw_down_last == 0 && sw_down == 1)
 #define SW_LEFT_PRESSED (sw_left_last == 0 && sw_left == 1)
 #define SW_RIGHT_PRESSED (sw_right_last == 0 && sw_right == 1)
 // States
 static uint8_t trigger_drawsetpoint = 1;
 static int16_t last_temp = 21245;
 static int16_t last_temp_frac = 21245;
 static int16_t last_state = 123;
 static uint8_t goto_mode = MODE_HEAT;
 static uint8_t reset_mode = RESET_REBOOT;
 // Display state machine
 void display_process(therm_settings_t* set, therm_status_t* status)
+{
     uint8_t state_changed = status->state != last_state;
     last_state = status->state;
     uint8_t temp_changed = status->temp != last_temp || status->temp_frac != last_temp_frac;
     last_temp = status->temp;
     last_temp_frac = status->temp_frac;
     uint8_t sw_btn = !HAL_GPIO_ReadPin(SW_BTN);
     uint8_t sw_up = !HAL_GPIO_ReadPin(SW_UP);
     uint8_t sw_down = !HAL_GPIO_ReadPin(SW_DOWN);
     uint8_t sw_left = !HAL_GPIO_ReadPin(SW_LEFT);
     uint8_t sw_right = !HAL_GPIO_ReadPin(SW_RIGHT);
     switch(status->state)
+    {
         // Idle state
         case STATE_IDLE:
+        {
             // Write text to OLED
             // [ therm :: idle ]
             ssd1306_drawstring("therm :: idle ", 0, 40);
             status->pid_enabled = 0;
             if(temp_changed || state_changed) {
                 char tempstr[6];
                 itoa_fp(status->temp, status->temp_frac, tempstr);
                 ssd1306_drawstring("Temp: ", 3, 40);
                 ssd1306_drawstring("    ", 3, 72);
                 ssd1306_drawstring(tempstr, 3, 72);
+            }
             if (state_changed) {
             	ssd1306_drawlogo();
+            }
             switch(goto_mode) {
                 case MODE_HEAT:
+                {
                     if(set->val.plant_type == PLANT_HEATER)
                         ssd1306_drawstring("-> heat     ", 1, 40);
                     else
                         ssd1306_drawstring("-> cool     ", 1, 40);
                 } break;
                 case MODE_SETUP:
+                {
                     ssd1306_drawstring("-> setup    ", 1, 40);
                 } break;
                 case MODE_RESET:
+                {
                     ssd1306_drawstring("-> reset    ", 1, 40);
                 } break;
 				#ifdef BOOTLOADER_SHORTCUT
                 case MODE_BOOTLOADER:
+                {
                     ssd1306_drawstring("-> dfu      ", 1, 40);
+                }
 				#endif
+            }
             // Button handler
             if(SW_BTN_PRESSED) {
                 switch(goto_mode) {
                     case MODE_HEAT:
                         status->state = STATE_PREHEAT;
                         break;
                     case MODE_SETUP:
                         status->state = STATE_SETMODE;
                         break;
                     case MODE_RESET:
                         status->state = STATE_RESET;
                         reset_mode = RESET_REBOOT;
                         break;
 					#ifdef BOOTLOADER_SHORTCUT
                     case MODE_BOOTLOADER:
                         ssd1306_clearscreen();
                         ssd1306_drawstring("Bootloader Entered", 0, 0);
                         ssd1306_drawstring("Device won't boot", 2, 0);
                         ssd1306_drawstring("until reflashed!", 3, 0);
 //                        bootloader_enter(); // Resets into bootloader
                         status->state = STATE_RESET; // Just in case
                         break;
 					#endif
                     default:
                         status->state = STATE_PREHEAT;
+                }
+            }
             else if(SW_DOWN_PRESSED && goto_mode < (MODE_SIZE - 1)) {
                 goto_mode++;
+            }
             else if(SW_UP_PRESSED && goto_mode > 0) {
                 goto_mode--;
+            }
             // Event Handler
             // N/A
         } break;
         case STATE_SETMODE:
+        {
             // Write text to OLED
             // [ therm :: set mode ]
             // [ m =          ]
             ssd1306_drawstring("Control Mode", 0, 40);
             ssd1306_drawlogo();
             if(set->val.control_mode == MODE_PID)
                 ssd1306_drawstring("PID       ", 1, 60);
             else
                 ssd1306_drawstring("Thermostat", 1, 60);
             ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_SETPLANTTYPE;
+            }
             else if (!HAL_GPIO_ReadPin(SW_UP)) {
                 set->val.control_mode = MODE_PID;
+            }
             else if(!HAL_GPIO_ReadPin(SW_DOWN)) {
                 set->val.control_mode = MODE_THERMOSTAT;
+            }
             // Event Handler
             // N/A
         } break;
         case STATE_SETPLANTTYPE:
+        {
             // Write text to OLED
             // [ therm :: set mode ]
             // [ m =          ]
             ssd1306_drawstring("Plant Type", 0, 40);
             ssd1306_drawlogo();
             if(set->val.plant_type == PLANT_HEATER)
                 ssd1306_drawstring("Heater", 1, 60);
             else
                 ssd1306_drawstring("Cooler", 1, 60);
             ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 if(set->val.control_mode == MODE_PID)
                     status->state = STATE_SETP;
                 else
                     status->state = STATE_SETHYSTERESIS;
+            }
             else if (!HAL_GPIO_ReadPin(SW_UP)) {
                 set->val.plant_type = PLANT_COOLER;
+            }
             else if(!HAL_GPIO_ReadPin(SW_DOWN)) {
                 set->val.plant_type = PLANT_HEATER;
+            }
             // Event Handler
             // N/A
         } break;
         case STATE_SETHYSTERESIS:
+        {
             // Write text to OLED
             ssd1306_drawstring("Hysteresis", 0, 40);
             ssd1306_drawlogo();
             char tempstr[6];
             itoa(set->val.hysteresis, tempstr, 10);
             ssd1306_drawstring("H=", 1, 45);
             ssd1306_drawstring("    ", 1, 57);
             ssd1306_drawstring(tempstr, 1, 57);
             ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_SETBOOTTOBREW;
+            }
             else {
                 user_input((uint16_t*)&set->val.hysteresis);
+            }
             // Event Handler
             // N/A
         } break;
         case STATE_SETP:
+        {
             // Write text to OLED
             // [ therm :: set p ]
             // [ p = 12         ]
             ssd1306_drawstring("Proportional", 0, 40);
             ssd1306_drawlogo();
             char tempstr[6];
             itoa(set->val.k_p, tempstr, 10);
             ssd1306_drawstring("P=", 1, 45);
             ssd1306_drawstring("    ", 1, 57);
             ssd1306_drawstring(tempstr, 1, 57);
             ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_SETI;
+            }
             else {
                 user_input((uint16_t*)&set->val.k_p);
+            }
             // Event Handler
             // N/A
         } break;
         case STATE_SETI:
+        {
             // Write text to OLED
             // [ therm :: set i ]
             // [ i = 12         ]
             ssd1306_drawstring("Integral", 0, 40);
             ssd1306_drawlogo();
             char tempstr[6];
             itoa(set->val.k_i, tempstr, 10);
             ssd1306_drawstring("I=", 1, 45);
             ssd1306_drawstring("    ", 1, 57);
             ssd1306_drawstring(tempstr, 1, 57);
             ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_SETD;
+            }
             else {
                 user_input((uint16_t*)&set->val.k_i);
+            }
             // Event Handler
             // N/A
         } break;
         case STATE_SETD:
+        {
             // Write text to OLED
             // [ therm :: set d ]
             // [ d = 12         ]
             ssd1306_drawstring("Derivative", 0, 40);
             ssd1306_drawlogo();
             char tempstr[6];
             itoa(set->val.k_d, tempstr, 10);
             ssd1306_drawstring("D=", 1, 45);
             ssd1306_drawstring("    ", 1, 57);
             ssd1306_drawstring(tempstr, 1, 57);
             ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_SETWINDUP;
+            }
             else {
                 user_input((uint16_t*)&set->val.k_d);
+            }
             // Event Handler
             // N/A
         } break;
         case STATE_SETWINDUP:
+        {
             // Write text to OLED
             // [ therm :: set windup ]
             // [ g = 12         ]
             ssd1306_drawstring("Windup Guard", 0, 40);
             ssd1306_drawlogo();
             char tempstr[6];
             itoa(set->val.windup_guard, tempstr, 10);
             ssd1306_drawstring("G=", 1, 45);
             ssd1306_drawstring("    ", 1, 57);
             ssd1306_drawstring(tempstr, 1, 57);
             ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_SETBOOTTOBREW;
+            }
             else {
                 user_input((uint16_t*)&set->val.windup_guard);
+            }
             // Event Handler
             // N/A
         } break;
         case STATE_SETBOOTTOBREW:
+        {
             // Write text to OLED
             // [ therm :: set windup ]
             // [ g = 12         ]
             ssd1306_drawstring("Start on Boot", 0, 40);
             ssd1306_drawlogo();
             ssd1306_drawstring("sob=", 1, 45);
             if(set->val.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) {
                 status->state = STATE_SETUNITS;
+            }
             else if(!HAL_GPIO_ReadPin(SW_UP)) {
                 set->val.boottobrew = 1;
+            }
             else if(!HAL_GPIO_ReadPin(SW_DOWN)) {
                 set->val.boottobrew = 0;
+            }
             // 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(set->val.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) {
                 status->state = STATE_SETTEMPOFFSET;
+            }
             else if(!HAL_GPIO_ReadPin(SW_UP)) {
                 set->val.temp_units = TEMP_UNITS_FAHRENHEIT;
+            }
             else if(!HAL_GPIO_ReadPin(SW_DOWN)) {
                 set->val.temp_units = TEMP_UNITS_CELSIUS;
+            }
             // Event Handler
             // N/A
         } break;
         case STATE_SETTEMPOFFSET:
+        {
             // Write text to OLED
             // [ therm :: set temp offset ]
             // [ g = 12         ]
             ssd1306_drawstring("Temp Cal Offset", 0, 40);
             ssd1306_drawlogo();
             char tempstr[6];
             itoa(set->val.temp_offset, tempstr, 10);
             ssd1306_drawstring("O=", 1, 45);
             ssd1306_drawstring("    ", 1, 57);
             ssd1306_drawstring(tempstr, 1, 57);
             ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
 //                flash_save(set);
                 status->state = STATE_IDLE;
+            }
             else {
                 user_input_signed(&set->val.temp_offset);
+            }
             // Event Handler
             // N/A
         } break;
         case STATE_PREHEAT:
+        {
             // Write text to OLED
             // [ therm : preheating brew ]
             // [ 30 => 120 C             ]
             if(set->val.plant_type == PLANT_HEATER)
                 ssd1306_drawstring("Preheating...", 0, 0);
             else
                 ssd1306_drawstring("Precooling...", 0, 0);
             //ssd1306_drawlogo();
             draw_setpoint(status);
             status->pid_enabled = 1;
             status->setpoint = set->val.setpoint_brew;
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_IDLE;
+            }
             else {
                 user_input((uint16_t*)&set->val.setpoint_brew);
+            }
             // Event Handler
             if(status->temp >= status->setpoint) {
                 status->state = STATE_MAINTAIN;
+            }
         } break;
         case STATE_MAINTAIN:
+        {
             // Write text to OLED
             // [ therm : ready to brew ]
             // [ 30 => 120 C           ]
             if(set->val.plant_type == PLANT_HEATER)
                 ssd1306_drawstring("Preheated!", 0, 0);
             else
                 ssd1306_drawstring("Precooled!", 0, 0);
             draw_setpoint(status);
             status->pid_enabled = 1;
             status->setpoint = set->val.setpoint_brew;
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_IDLE;
+            }
             else {
                 user_input((uint16_t*)&set->val.setpoint_brew);
+            }
             // Event Handler
             // N/A
         } break;
         // Thermocouple error
         case STATE_TC_ERROR:
+        {
             // Write text to OLED
             // [ therm : ready to steam ]
             // [ 30 => 120 C            ]
             ssd1306_drawstring("Error:              ", 0, 0);
             char tempstr[6];
             itoa(status->error_code, tempstr, 10);
             ssd1306_drawstring(tempstr, 0, 57);
             //TODO: add RTD error codes
             if(status->error_code == 1)
                 ssd1306_drawstring("    TC Open Circuit", 1, 0);
             else if(status->error_code == 4)
                 ssd1306_drawstring("    TC Short to GND", 1, 0);
             else if(status->error_code == 8)
                 ssd1306_drawstring("    TC Short to VCC", 1, 0);
             else
                 ssd1306_drawstring("#?, Unknown Error", 1, 0);
             ssd1306_drawstring("                    ", 2, 0);
             ssd1306_drawstring("-> to ignore all or", 2, 0);
             ssd1306_drawstring("press to continue", 3, 0);
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_IDLE;
 				#ifdef MAX31865_RTD_SENSOR
 				max31865_clear_errors(spi_get());
 				#endif
+            }
             else if(SW_RIGHT_PRESSED) {
                 set->val.ignore_error = 1;
                 status->state = STATE_IDLE;
+            }
             // Event Handler
             // Maybe handle if TC is plugged in
             // N/A
         } break;
         // Reset state
         case STATE_RESET:
+        {
             // Write text to OLED
             // [ therm :: reset ]
             ssd1306_drawstring("therm :: reset ", 0, 40);
             status->pid_enabled = 0;
             ssd1306_drawlogo();
             switch(reset_mode) {
 				case RESET_DEFAULTS:
+				{
 					ssd1306_drawstring("-> defaults   ", 1, 40);
 				} break;
                 case RESET_BOOTLOADER:
+                {
                     ssd1306_drawstring("-> bootloader ", 1, 40);
                 } break;
                 case RESET_REBOOT:
+                {
                     ssd1306_drawstring("-> reboot     ", 1, 40);
                 } break;
                 case RESET_EXIT:
+                {
                     ssd1306_drawstring("-> exit       ", 1, 40);
                 } break;
+            }
             // Button handler
             if(SW_BTN_PRESSED) {
                 switch(reset_mode) {
                     case RESET_BOOTLOADER:
+                    {
                         ssd1306_clearscreen();
                         ssd1306_drawstring("Bootloader Entered", 0, 0);
                         ssd1306_drawstring("Device won't boot", 2, 0);
                         ssd1306_drawstring("until reflashed!", 3, 0);
                         HAL_Delay(1000);
 //                        bootloader_enter(); // Resets into bootloader
                         status->state = STATE_RESET; // Just in case
                     } break;
                     case RESET_DEFAULTS:
+                    {
                         status->state = STATE_RESET;
 //                        flash_load_defaults(set);
 //                        flash_save(set);
                         NVIC_SystemReset();
                     } break;
                     case RESET_REBOOT:
+                    {
                         status->state = STATE_RESET;
                         NVIC_SystemReset();
                     } break;
                     case RESET_EXIT:
+                    {
                         status->state = STATE_IDLE;
                     } break;
+                }
+            }
             else if(SW_DOWN_PRESSED && reset_mode < (RESET_SIZE-1)) {
                 reset_mode++;
+            }
             else if(SW_UP_PRESSED && reset_mode > 0) {
                 reset_mode--;
+            }
             // Event Handler
             // N/A
         } break;
         // Something is terribly wrong
         default:
+        {
             status->state = STATE_IDLE;
             status->pid_enabled = 0;
         } break;
+    }
     if(last_state != status->state) {
         // Clear screen on state change
         goto_mode = MODE_HEAT;
         trigger_drawsetpoint = 1;
         ssd1306_clearscreen();
+    }
     // Last buttonpress
     sw_btn_last = sw_btn;
     sw_up_last = sw_up;
     sw_down_last = sw_down;
     sw_left_last = sw_left;
     sw_right_last = sw_right;
+}
 static int32_t temp_last = 43002;
 static int32_t temp_frac_last = 43002;
 static int32_t setpoint_last = 10023;
 // Draw current setpoint on display
 static void draw_setpoint(therm_status_t* status) {
     // FIXME: need to do this when switching modes too
     if(status->temp != temp_last || status->temp_frac != temp_frac_last || trigger_drawsetpoint) {
         char tempstr[3];
         itoa_fp(status->temp, status->temp_frac, tempstr);
         ssd1306_drawstringbig("      ", 3, 0);
         ssd1306_drawstringbig(tempstr, 3, 0);
+    }
     if(trigger_drawsetpoint)
         ssd1306_drawstringbig(">", 3, 74);
     if(status->setpoint != setpoint_last || trigger_drawsetpoint) {
         char tempstr[3];
         itoa(status->setpoint, tempstr, 10);
         ssd1306_drawstringbig("   ", 3, 90);
         ssd1306_drawstringbig(tempstr, 3, 90);
+    }
     trigger_drawsetpoint = 0;
     setpoint_last = status->setpoint;
     temp_last = status->temp;
     temp_frac_last = status->temp_frac;
+}
 void display_startup_screen() {
     ssd1306_clearscreen();
     ssd1306_drawstring("therm v0.4", 1, 40);
     ssd1306_drawstring("protofusion.org/therm", 3, 0);
+}
 // vim:softtabstop=4 shiftwidth=4 expandtab

src/gpio.c

➞

Show inline comments

@@ @@ -6,6 +6,48 @@ @@
 #include "gpio.h"
 #define CHANGE_PERIOD_MS 100
 #define CHANGE_ELAPSED (HAL_GetTick() - change_time_reset) > CHANGE_PERIOD_MS
 #define CHANGE_RESET change_time_reset = HAL_GetTick()
 // Increase on each press, and increase at a fast rate after duration elapsed of continuously holding down... somehow...
 static uint32_t change_time_reset = 0;
 // Increment/decrement unsigned variable with up/down buttons
 void user_input(uint16_t* to_modify)
+{
     if(CHANGE_ELAPSED) {
         if(!HAL_GPIO_ReadPin(SW_UP) ) {
             CHANGE_RESET;
             (*to_modify)++;
+        }
         else if(!HAL_GPIO_ReadPin(SW_DOWN) && (*to_modify) > 0) {
             CHANGE_RESET;
             (*to_modify)--;
+        }
+    }
+}
 // Increment/decrement signed variable with up/down buttons
 void user_input_signed(int32_t* to_modify)
+{
 	//fixme: need to cast to 16/32 bits correctly
     if(CHANGE_ELAPSED) {
         if(!HAL_GPIO_ReadPin(SW_UP) ) {
             CHANGE_RESET;
             if (*to_modify < 32768)
             	(*to_modify)++;
+        }
         else if(!HAL_GPIO_ReadPin(SW_DOWN)) {
             CHANGE_RESET;
             if (*to_modify >= -32768)
             	(*to_modify)--;
+        }
+    }
+}
 // Initialize GPIOs
 void gpio_init(void)

src/main.c

➞

Show inline comments

@@ @@ -9,7 +9,9 @@ @@
 #include "watchdog.h"
 #include "system.h"
 #include "display.h"
 #include "gpio.h"
 #include "pid.h"
 #include "error.h"
 #include "flash.h"
 #include "ssd1306.h"
@@ @@ -17,16 +19,27 @@ @@
 #include "interrupts.h"
 #include "buttons.h"
 therm_settings_t set;
 therm_status_t status;
 pid_state_t pid_state;
 int main(void)
+{
 	sysclock_init();
 	hal_init();
 	gpio_init();
 	ssd1306_init();
 	// Startup screen
     display_startup_screen();
     HAL_Delay(2000);
 	ssd1306_drawlogo();
 	ssd1306_clearscreen();
 	flash_init();
 	watchdog_init();
 	//just some example code for getting flash values
@@ @@ -37,28 +50,172 @@ int main(void) @@
 //	ssd1306_drawstring(const char *dataPtr, unsigned char row, unsigned char xPos)
 //	ssd1306_drawstring("[ ProtoFuse ]", 0, 0);
     // Default status
     status.temp = 0;
     status.temp_frac = 0;
     status.state_resume = 0;
     status.state = STATE_IDLE;
     status.setpoint = 70;
     status.pid_enabled = 0;
     pid_init(&pid_state);
     flash_init();
 	float temp_counter = 0;
 	// Software timers
 	uint32_t last_screen_update_time = HAL_GetTick();
     // Soft timers
     uint32_t last_ssr_on = 0;
     uint32_t last_vcp_tx = 0;
     uint32_t last_led = 0;
     uint32_t last_pid = 0;
     uint32_t last_thermostat = 0;
     int16_t ssr_output = 0; // Duty cycle of ssr, 0 to SSR_PERIOD
     uint8_t thermostat_plant_on = 0;
 	while (1)
+	{
 		// function that checks all the buttons
 		freaking_debounce();
         if(set.val.control_mode == MODE_PID && (HAL_GetTick() - last_pid > PID_PERIOD))
+        {
 //            #ifdef MAX31865_RTD_SENSOR
 //            max31865_readtemp(spi_get(), &set, &status);
 //			#else
 //			max31855_readtemp(spi_get(), &set, &status); // Read MAX31855
 //			#endif
             if(status.pid_enabled)
+            {
                 // Get ssr output for next time
                 int16_t power_percent = pid_update(&set, &status, &pid_state);
                 if(set.val.plant_type == PLANT_HEATER)
                     power_percent *= -1;
                 //power-percent is 0-1000?
                 ssr_output = power_percent; //(((uint32_t)SSR_PERIOD * (uint32_t)10 * (uint32_t)100) * power_percent) / (uint32_t)1000000;
             	// put ssr output on display
                 ssd1306_drawstring("      ", 0, 90); //fixme: this is bad, but I can't get the old digits to clear otherwise
                 char tempstr[6];
                 itoa(ssr_output, tempstr, 10);
                 ssd1306_drawstring(tempstr, 0, 90);
+            }
             else
+            {
                 ssr_output = 0;
+            }
             last_pid = HAL_GetTick();
+        }
 //        // Kill SSR once the desired on-time has elapsed
 //        if(set.val.control_mode == MODE_PID && (HAL_GetTick() - last_ssr_on > ssr_output || ssr_output <= 0))
 //        {
 //            HAL_GPIO_WritePin(SSR_PIN, 0);
 //            HAL_GPIO_WritePin(LED_POWER, 0);
 //        }
 //
 //
 //        // Every 200ms, set the SSR on unless output is 0
 //        if(set.val.control_mode == MODE_PID && HAL_GetTick() - last_ssr_on > SSR_PERIOD)
 //        {
 //            // Heat or cool, if we need to
 //            if(ssr_output > 0)
 //            {
 //                HAL_GPIO_WritePin(SSR_PIN, 1);
 //                HAL_GPIO_WritePin(LED_POWER, 1);
 //                last_ssr_on = HAL_GetTick();
 //            }
 //            else {
 //                // Make sure everything is off
 //                HAL_GPIO_WritePin(SSR_PIN, 0);
 //                HAL_GPIO_WritePin(LED_POWER, 0);
 //            }
 //
 //        }
         // Thermostatic control
         if(set.val.control_mode == MODE_THERMOSTAT && HAL_GetTick() - last_thermostat > SSR_PERIOD)
+        {
 		// Grab and transmit data
 		if(HAL_GetTick() - last_screen_update_time > 100)
+		{
 			HAL_GPIO_TogglePin(LED_GPIO_Port, LED_PIN);
 			char buffer[256];
 			snprintf(buffer, 256, "Counter: %.1f", temp_counter);
 			ssd1306_drawstring(buffer, 3, 10);
 			ssd1306_drawstring("Therm Next Generation", 0, 0);
 			temp_counter = temp_counter + 0.1;
 			last_screen_update_time = HAL_GetTick();
+		}
 //            #ifdef MAX31865_RTD_SENSOR
 //            max31865_readtemp(spi_get(), &set, &status);
 //			#else
 //			max31855_readtemp(spi_get(), &set, &status); // Read MAX31855
 //			#endif
             // TODO: Migrate this FxP conversion to the readtemp code or similar
             int8_t temp_frac = status.temp_frac > 9 ? status.temp_frac / 10 : status.temp_frac;
             temp_frac = status.temp > 0 ? temp_frac : temp_frac * -1;
             int32_t temp = (status.temp * 10) + temp_frac;
             // EMZ FIXME: This could be way simpler
             if(set.val.plant_type == PLANT_HEATER && status.setpoint * 10 < temp - set.val.hysteresis * 10)
                 thermostat_plant_on = 1;
             else if(set.val.plant_type == PLANT_HEATER && status.setpoint * 10 > temp + set.val.hysteresis * 10)
                 thermostat_plant_on = 0;
             if(set.val.plant_type == PLANT_COOLER && status.setpoint * 10 > temp + set.val.hysteresis * 10)
                 thermostat_plant_on = 1;
             else if(set.val.plant_type == PLANT_COOLER && status.setpoint * 10 < temp - set.val.hysteresis * 10)
                 thermostat_plant_on = 0;
             // EMZ: TODO: Refactor to output_enabled or something
             if(status.pid_enabled && thermostat_plant_on)
+            {
                 // EMZ TODO: functionalize this
             	// put ssr output on display
                 ssd1306_drawstring("      ", 0, 90); //fixme: this is bad, but I can't get the old digits to clear otherwise
                 char tempstr[6];
                 itoa(ssr_output, tempstr, 10);
                 ssd1306_drawstring(tempstr, 0, 90);
                 HAL_GPIO_WritePin(SSR_PIN, 1);
                 HAL_GPIO_WritePin(LED_POWER, 1);
+            }
             else
+            {
                 HAL_GPIO_WritePin(SSR_PIN, 0);
                 HAL_GPIO_WritePin(LED_POWER, 0);
+            }
             last_thermostat = HAL_GetTick();
+        }
 //        // Transmit temperature over USB-CDC on a regular basis
 //        if(HAL_GetTick() - last_vcp_tx > VCP_TX_FREQ)
 //        {
 //            // Print temp to cdc
 //            char tempstr[16];
 //            itoa_fp(status.temp, status.temp_frac, tempstr);
 //            uint8_t numlen = strlen(tempstr);
 //            tempstr[numlen] = '\r';
 //            tempstr[numlen+1] = '\n';
 //
 //    //        if(set.val.usb_plugged)
 //    //            CDC_Transmit_FS(tempstr, numlen+2);
 //           // while(CDC_Transmit_FS("\r\n", 2) == USBD_BUSY);
 //
 //            last_vcp_tx = HAL_GetTick();
 //        }
         // Run state machine
         display_process(&set, &status);
 		watchdog_feed();
+	}

src/pid.c

➞

Show inline comments

@@ new file 100644 @@
 #include "pid.h"
 // PID implementation
 void pid_init(pid_state_t* state)
+{
 	state->i_state = 0;
 	state->last_pid_temp = 0;
 	state->last_pid_temp_frac = 0;
+}
 int16_t pid_update(therm_settings_t* set, therm_status_t* status, pid_state_t *state)
+{
   // Convert temperature to fixed point number with 1/10th resolution
   int8_t temp_frac = status->temp_frac > 9 ? status->temp_frac / 10 : status->temp_frac;
   temp_frac = status->temp > 0 ? temp_frac : temp_frac * -1;
   int32_t temp = (status->temp * 10) + temp_frac;
   // Calculate instantaneous error
   int16_t error = status->setpoint * 10 - temp; // TODO: Use fixed point fraction
   // Proportional component
   int32_t p_term = set->val.k_p * error;
   // Error accumulator (integrator)
   state->i_state += error;
   // to prevent the iTerm getting huge from lots of
   //  error, we use a "windup guard"
   // (this happens when the machine is first turned on and
   // it cant help be cold despite its best efforts)
   // not necessary, but this makes windup guard values
   // relative to the current iGain
   int32_t windup_guard_res = (set->val.windup_guard * 10) / set->val.k_i;
   // Calculate integral term with windup guard
   if (state->i_state > windup_guard_res)
 	  state->i_state = windup_guard_res;
   else if (state->i_state < -windup_guard_res)
 	  state->i_state = -windup_guard_res;
   int32_t i_term = set->val.k_i * state->i_state;
   // Calculate differential term (slope since last iteration)
   int32_t d_term = (set->val.k_d * (temp - state->last_pid_temp));
   // Save temperature for next iteration
   state->last_pid_temp = temp;
   int16_t result = (p_term + i_term - d_term) / 10;
   // Put out tenths of percent, 0-1000.
   if(result > 1000)
     result = 1000;
   else if(result < -1000)
     result = -1000;
   // Return feedback
   return result;
+}

src/system/stringhelpers.c

➞

Show inline comments

@@ new file 100644 @@
 #include <inttypes.h>
 char const digit[] = "0123456789";
 char* zitoa(int16_t i, char b[]){
     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[]){
     // 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;
+}

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