therm Changeset - 857e86bbc10d · protofusion repositories

Changeset - 857e86bbc10d

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[Not reviewed]

cortex-f0

0 6 0

Ethan Zonca - 9 years ago 2015-11-28 14:29:25
ez@ethanzonca.com

Refactor ssd1306 functions

6 files changed with 100 insertions and 102 deletions:

display.c

flash.c

gpio.c

main.c

ssd1306.c

ssd1306.h

0 comments (0 inline, 0 general)

display.c

➞

Show inline comments

@@ @@ -45,56 +45,56 @@ void display_process(therm_settings_t* s @@
+    {
         // Idle state
         case STATE_IDLE:
+        {
             // Write text to OLED
             // [ therm :: idle ]
-            ssd1306_DrawString("therm :: idle ", 0, 40);
+            ssd1306_drawstring("therm :: idle ", 0, 40);
             status->pid_enabled = 0;
             if(temp_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);
                 ssd1306_drawstring("Temp: ", 3, 40);
                 ssd1306_drawstring("    ", 3, 72);
                 ssd1306_drawstring(tempstr, 3, 72);
+            }
             ssd1306_drawlogo();
             switch(goto_mode) {
                 case 3:
+                {
-                    ssd1306_DrawString("-> loader   ", 1, 40);
+                    ssd1306_drawstring("-> loader   ", 1, 40);
                 } break;
                 case 2:
+                {
-                    ssd1306_DrawString("-> heat     ", 1, 40);
+                    ssd1306_drawstring("-> heat     ", 1, 40);
                 } break;
                 case 1:
+                {
-                    ssd1306_DrawString("-> setup    ", 1, 40);
+                    ssd1306_drawstring("-> setup    ", 1, 40);
                 } break;
                 case 0:
+                {
-                    ssd1306_DrawString("-> reset    ", 1, 40);
+                    ssd1306_drawstring("-> reset    ", 1, 40);
+                }
+            }
             // Button handler
             if(SW_BTN_PRESSED) {
                 switch(goto_mode) {
                     case 3:
+                    {
                         ssd1306_clearscreen();
                         ssd1306_DrawString("Bootloader Entered", 0, 0);
                         ssd1306_DrawString("Device won't boot", 2, 0);
                         ssd1306_DrawString("until reflashed!", 3, 0);
                         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_IDLE; // Just in case
                     } break;
                     case 2:
                         status->state = STATE_PREHEAT_BREW;
                         break;
@@ @@ -126,22 +126,22 @@ void display_process(therm_settings_t* s @@
         case STATE_SETP:
+        {
             // Write text to OLED
             // [ therm :: set p ]
             // [ p = 12         ]
-            ssd1306_DrawString("Proportional", 0, 40);
+            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("P=", 1, 45);
             ssd1306_drawstring("    ", 1, 57);
             ssd1306_drawstring(tempstr, 1, 57);
-            ssd1306_DrawString("Press to accept", 3, 40);
+            ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_SETI;
+            }
             else {
@@ @@ -155,22 +155,22 @@ void display_process(therm_settings_t* s @@
         case STATE_SETI:
+        {
             // Write text to OLED
             // [ therm :: set i ]
             // [ i = 12         ]
-            ssd1306_DrawString("Integral", 0, 40);
+            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("I=", 1, 45);
             ssd1306_drawstring("    ", 1, 57);
             ssd1306_drawstring(tempstr, 1, 57);
-            ssd1306_DrawString("Press to accept", 3, 40);
+            ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_SETD;
+            }
             else {
@@ @@ -184,22 +184,22 @@ void display_process(therm_settings_t* s @@
         case STATE_SETD:
+        {
             // Write text to OLED
             // [ therm :: set d ]
             // [ d = 12         ]
-            ssd1306_DrawString("Derivative", 0, 40);
+            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("D=", 1, 45);
             ssd1306_drawstring("    ", 1, 57);
             ssd1306_drawstring(tempstr, 1, 57);
-            ssd1306_DrawString("Press to accept", 3, 40);
+            ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_SETWINDUP;
+            }
             else {
@@ @@ -213,22 +213,22 @@ void display_process(therm_settings_t* s @@
         case STATE_SETWINDUP:
+        {
             // Write text to OLED
             // [ therm :: set windup ]
             // [ g = 12         ]
-            ssd1306_DrawString("Windup Guard", 0, 40);
+            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("G=", 1, 45);
             ssd1306_drawstring("    ", 1, 57);
             ssd1306_drawstring(tempstr, 1, 57);
-            ssd1306_DrawString("Press to accept", 3, 40);
+            ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_SETBOOTTOBREW;
+            }
             else {
@@ @@ -242,23 +242,23 @@ void display_process(therm_settings_t* s @@
         case STATE_SETBOOTTOBREW:
+        {
             // Write text to OLED
             // [ therm :: set windup ]
             // [ g = 12         ]
-            ssd1306_DrawString("Start on Boot", 0, 40);
+            ssd1306_drawstring("Start on Boot", 0, 40);
             ssd1306_drawlogo();
-            ssd1306_DrawString("sob=", 1, 45);
+            ssd1306_drawstring("sob=", 1, 45);
             if(set->val.boottobrew)
-                ssd1306_DrawString("Enabled ", 1, 70);
+                ssd1306_drawstring("Enabled ", 1, 70);
             else
-                ssd1306_DrawString("Disabled", 1, 70);
+                ssd1306_drawstring("Disabled", 1, 70);
-            ssd1306_DrawString("Press to accept", 3, 40);
+            ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_SETUNITS;
+            }
             else if(!HAL_GPIO_ReadPin(SW_UP)) {
@@ @@ -275,21 +275,21 @@ void display_process(therm_settings_t* s @@
         case STATE_SETUNITS:
+        {
             // Write text to OLED
             // [ therm :: set windup ]
             // [ g = 12         ]
-            ssd1306_DrawString("Units: ", 0, 40);
+            ssd1306_drawstring("Units: ", 0, 40);
             ssd1306_drawlogo();
             if(set->val.temp_units == TEMP_UNITS_FAHRENHEIT)
-                ssd1306_DrawString("Fahrenheit", 1, 60);
+                ssd1306_drawstring("Fahrenheit", 1, 60);
             else
-                ssd1306_DrawString("Celsius   ", 1, 60);
+                ssd1306_drawstring("Celsius   ", 1, 60);
-            ssd1306_DrawString("Press to accept", 3, 40);
+            ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 status->state = STATE_SETTEMPOFFSET;
+            }
             else if(!HAL_GPIO_ReadPin(SW_UP)) {
@@ @@ -307,22 +307,22 @@ void display_process(therm_settings_t* s @@
         case STATE_SETTEMPOFFSET:
+        {
             // Write text to OLED
             // [ therm :: set temp offset ]
             // [ g = 12         ]
-            ssd1306_DrawString("Temp Cal Offset", 0, 40);
+            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("O=", 1, 45);
             ssd1306_drawstring("    ", 1, 57);
             ssd1306_drawstring(tempstr, 1, 57);
-            ssd1306_DrawString("Press to accept", 3, 40);
+            ssd1306_drawstring("Press to accept", 3, 40);
             // Button handler
             if(SW_BTN_PRESSED) {
                 flash_save(&set);
                 status->state = STATE_IDLE;
+            }
@@ @@ -338,13 +338,13 @@ void display_process(therm_settings_t* s @@
         case STATE_PREHEAT_BREW:
+        {
             // Write text to OLED
             // [ therm : preheating brew ]
             // [ 30 => 120 C             ]
-            ssd1306_DrawString("Preheating...", 0, 0);
+            ssd1306_drawstring("Preheating...", 0, 0);
             //ssd1306_drawlogo();
             draw_setpoint(status);
             status->pid_enabled = 1;
 	    status->setpoint = set->val.setpoint_brew;
@@ @@ -365,13 +365,13 @@ void display_process(therm_settings_t* s @@
         case STATE_MAINTAIN_BREW:
+        {
             // Write text to OLED
             // [ therm : ready to brew ]
             // [ 30 => 120 C           ]
-            ssd1306_DrawString("Preheated!", 0, 0);
+            ssd1306_drawstring("Preheated!", 0, 0);
             //ssd1306_drawlogo();
             draw_setpoint(status);
             status->pid_enabled = 1;
 	    status->setpoint = set->val.setpoint_brew;
             // Button handler
@@ @@ -389,13 +389,13 @@ void display_process(therm_settings_t* s @@
         case STATE_PREHEAT_STEAM:
+        {
             // Write text to OLED
             // [ therm : preheating steam ]
             // [ 30 => 120 C           ]
-            ssd1306_DrawString("Preheating...", 0, 0);
+            ssd1306_drawstring("Preheating...", 0, 0);
             //ssd1306_drawlogo();
             draw_setpoint(status);
             status->pid_enabled = 1;
 	    status->setpoint = set->val.setpoint_steam;
             // Button handler
@@ @@ -415,13 +415,13 @@ void display_process(therm_settings_t* s @@
         case STATE_MAINTAIN_STEAM:
+        {
             // Write text to OLED
             // [ therm : ready to steam ]
             // [ 30 => 120 C            ]
-            ssd1306_DrawString("Ready to Steam!", 0, 0);
+            ssd1306_drawstring("Ready to Steam!", 0, 0);
             //ssd1306_drawlogo();
             draw_setpoint(status);
             status->pid_enabled = 1;
 	    status->setpoint = set->val.setpoint_steam;
             // Button handler
@@ @@ -439,30 +439,30 @@ void display_process(therm_settings_t* s @@
         case STATE_TC_ERROR:
+        {
             // Write text to OLED
             // [ therm : ready to steam ]
             // [ 30 => 120 C            ]
-            ssd1306_DrawString("Error:              ", 0, 0);
+            ssd1306_drawstring("Error:              ", 0, 0);
             char tempstr[6];
             itoa(status->tc_errno, tempstr, 10);
-            ssd1306_DrawString(tempstr, 0, 57);
+            ssd1306_drawstring(tempstr, 0, 57);
             if(status->tc_errno == 1)
-                ssd1306_DrawString("    TC Open Circuit", 1, 0);
+                ssd1306_drawstring("    TC Open Circuit", 1, 0);
             else if(status->tc_errno == 4)
-                ssd1306_DrawString("    TC Short to GND", 1, 0);
+                ssd1306_drawstring("    TC Short to GND", 1, 0);
             else if(status->tc_errno == 8)
-                ssd1306_DrawString("    TC Short to VCC", 1, 0);
+                ssd1306_drawstring("    TC Short to VCC", 1, 0);
             else
                 ssd1306_DrawString("#?, Unknown Error", 1, 0);
             ssd1306_DrawString("                    ", 2, 0);
                 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);
             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;
+            }
             else if(SW_RIGHT_PRESSED) {
@@ @@ -505,24 +505,24 @@ static int32_t temp_last = 43002; @@
 static int32_t setpoint_last = 10023;
 void draw_setpoint(therm_status_t* status) {
     // FIXME: need to do this when switching modes too
     if(status->temp != temp_last || trigger_drawsetpoint) {
         char tempstr[3];
         itoa_fp(status->temp, status->temp_frac, tempstr);
         ssd1306_DrawStringBig("      ", 3, 0);
         ssd1306_DrawStringBig(tempstr, 3, 0);
         ssd1306_drawstringbig("      ", 3, 0);
         ssd1306_drawstringbig(tempstr, 3, 0);
+    }
     if(trigger_drawsetpoint)
-        ssd1306_DrawStringBig(">", 3, 74);
+        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);
         ssd1306_drawstringbig("   ", 3, 90);
         ssd1306_drawstringbig(tempstr, 3, 90);
+    }
     trigger_drawsetpoint = 0;
     setpoint_last = status->setpoint;
     temp_last = status->temp;
+}

flash.c

➞

Show inline comments

@@ @@ -13,39 +13,39 @@ static void __flash_write(therm_settings @@
 #define EEPROM_MAGIC_VALUE 0xbeef
 void flash_save(therm_settings_t* tosave)
+{
     ssd1306_clearscreen();
-    ssd1306_DrawString("Erase...", 0, 0);
+    ssd1306_drawstring("Erase...", 0, 0);
     HAL_Delay(100);
-    ssd1306_DrawString("Save...", 1, 0);
+    ssd1306_drawstring("Save...", 1, 0);
     __flash_write(tosave);
     HAL_Delay(100);
-    ssd1306_DrawString("Done!", 2, 0);
+    ssd1306_drawstring("Done!", 2, 0);
     HAL_Delay(500);
+}
 void flash_restore(therm_settings_t *torestore)
+{
     ssd1306_clearscreen();
-    ssd1306_DrawString("READING SAVE", 1, 0);
+    ssd1306_drawstring("READING SAVE", 1, 0);
     if(eeprom[EEPROM_MAGIC_INDEX] != EEPROM_MAGIC_VALUE)
+    {
-        ssd1306_DrawString("No data to read!", 2, 0);
+        ssd1306_drawstring("No data to read!", 2, 0);
         return;
+    }
     uint16_t i;
     for(i=0;i<128;i++)
         torestore->data[i] = *(eeprom+i);
-    ssd1306_DrawString("READ COMPLETE", 3, 0);
+    ssd1306_drawstring("READ COMPLETE", 3, 0);
+}
 static void __flash_write(therm_settings_t* tosave)
+{

gpio.c

➞

Show inline comments

 #include "gpio.h"
 #include "config.h"
 #include "stm32f0xx_hal_conf.h"
 #include <inttypes.h>
 // Increase on each press, and increase at a fast rate after duration elapsed of continuously holding down... somehow...
 uint32_t change_time_reset = 0;
+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)++;
@@ @@ -17,12 +19,14 @@ void user_input(uint16_t* to_modify) @@
             CHANGE_RESET;
             (*to_modify)--;
+        }
+    }
+}
 // Increment/decrement signed variable with up/down buttons
 void user_input_signed(int16_t* to_modify)
+{
     // TODO: Bounds check on int16_t
     if(CHANGE_ELAPSED) {
         if(!HAL_GPIO_ReadPin(SW_UP) ) {
             CHANGE_RESET;
@@ @@ -33,14 +37,15 @@ void user_input_signed(int16_t* to_modif @@
             (*to_modify)--;
+        }
+    }
+}
 void gpio_init(void) {
 // Initialize GPIO
 void gpio_init(void)
+{
   GPIO_InitTypeDef GPIO_InitStruct;
     /* GPIO Ports Clock Enable */
   __GPIOF_CLK_ENABLE();
   __GPIOA_CLK_ENABLE();
   __GPIOB_CLK_ENABLE();

main.c

➞

Show inline comments

@@ @@ -46,13 +46,13 @@ int main(void) @@
         bootloader_enter();
     // Init SPI busses
     spi_init();
     // Init OLED over SPI
-    ssd1306_Init();
+    ssd1306_init();
     ssd1306_clearscreen();
     // Default settings
     set.val.boottobrew = 0;
     set.val.temp_units = TEMP_UNITS_FAHRENHEIT;
     set.val.windup_guard = 200;
@@ @@ -73,14 +73,14 @@ int main(void) @@
     // Go to brew instead of idle if configured thusly
     if(set.val.boottobrew)
       status.state = STATE_PREHEAT_BREW;
     // Startup screen
     ssd1306_DrawString("therm v0.2", 1, 40);
     ssd1306_DrawString("protofusion.org/therm", 3, 0);
     ssd1306_drawstring("therm v0.2", 1, 40);
     ssd1306_drawstring("protofusion.org/therm", 3, 0);
     HAL_Delay(1000);
     // Restore settings from flash memory
     flash_restore(&set);
@@ @@ -142,13 +142,13 @@ int main(void) @@
+        {
             // Only support heating (ssr_output > 0) right now
             if(ssr_output > 0)
+            {
                 char tempstr[6];
                 itoa(ssr_output, tempstr, 10);
-                ssd1306_DrawString(tempstr, 0, 90);
+                ssd1306_drawstring(tempstr, 0, 90);
                 HAL_GPIO_WritePin(SSR_PIN, 1);
                 HAL_GPIO_WritePin(LED_POWER, 1);
                 last_ssr_on = HAL_GetTick();
+            }
             else {

ssd1306.c

➞

Show inline comments

 #include "stm32f0xx_hal_conf.h"
 #include "ssd1306.h"
 // Write command to OLED
 void WriteCommand(unsigned char command)
+static void WriteCommand(unsigned char command)
+{
   SSD_CS_Low();
   SSD_A0_Low();
   SPI_SendByte(command);
   SSD_CS_High();
+}
 // Write data to OLED
 void WriteData(unsigned char data)
+static void WriteData(unsigned char data)
+{
   SSD_CS_Low();
   SSD_A0_High();
   SPI_SendByte(data);
   SSD_CS_High();
+}
 // Initialize OLED
-void ssd1306_Init(void)
+void ssd1306_init(void)
+{
   /* Generate a reset */
   SSD_Reset_Low();
   uint32_t i;
   for(i=5000; i>1; i--)
@@ @@ -176,19 +176,19 @@ static const char fontData[][5] = @@
 //    {0x70,0x5C,0x52,0x54,0x70},         //   (108)  / - Unlock symbol
 //    {0x0C,0x1E,0x3C,0x1E,0x0C},         //   (109)  <3 - Heart Symbol
 //    {0x18,0x22,0xFF,0x12,0x0C},         //   (110)  U - USB Symbol
 };
 void setStartPage(unsigned char d)
+static void setStartPage(unsigned char d)
+{
     WriteCommand(0xB0|d);       // Set Page Start Address for Page Addressing Mode
                                 // Default => 0xB0 (0x00)
+}
 /* Below are functions used to configure the OLED */
 void setStartColumn(unsigned char d)
+static 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
+}
@@ @@ -256,13 +256,13 @@ void ssd1306_drawlogo() @@
         WriteData(row[3][i]);
+    }
     WriteData(0x00);
+}
 /* Print a single character from font.cpp */
-void ssd1306_DrawChar(char ascii, unsigned char row, unsigned char xPos)
+void ssd1306_drawchar(char ascii, unsigned char row, unsigned char xPos)
+{
     char *srcPointer = -1;
     unsigned char i;
     srcPointer = &fontData[(ascii-32)][0];
@@ @@ -274,13 +274,13 @@ void ssd1306_DrawChar(char ascii, unsign @@
         WriteData(*srcPointer);
         srcPointer++;
+    }
     WriteData(0x00);
+}
-void ssd1306_DrawCharBig(char ascii, unsigned char row, unsigned char xPos)
+void ssd1306_drawcharbig(char ascii, unsigned char row, unsigned char xPos)
+{
     char *srcPointer = -1;
     unsigned char i;
     srcPointer = &fontData[(ascii-32)][0];
@@ @@ -337,39 +337,39 @@ void ssd1306_DrawCharBig(char ascii, uns @@
         srcPointer++;
+    }
     WriteData(0x00);
+}
-void ssd1306_DrawString(const char *dataPtr, unsigned char row, unsigned char xPos)
+void ssd1306_drawstring(const char *dataPtr, unsigned char row, unsigned char xPos)
+{
     char *srcPointer;
     srcPointer = (char*)dataPtr;
-    ssd1306_DrawChar(' ',row,xPos); // NBSP must be written first before the string start
+    ssd1306_drawchar(' ',row,xPos); // NBSP must be written first before the string start
     while(1)
+    {
-        ssd1306_DrawChar(*srcPointer,row,xPos);
+        ssd1306_drawchar(*srcPointer,row,xPos);
         srcPointer++;
         xPos+=6;
         if(*srcPointer == 0) break;
+    }
+}
-void ssd1306_DrawStringBig(const char *dataPtr, unsigned char row, unsigned char xPos)
+void ssd1306_drawstringbig(const char *dataPtr, unsigned char row, unsigned char xPos)
+{
     char *srcPointer;
     srcPointer = (char*)dataPtr;
-    ssd1306_DrawCharBig(' ',row,xPos); // NBSP must be written first before the string start
+    ssd1306_drawcharbig(' ',row,xPos); // NBSP must be written first before the string start
     while(1)
+    {
-        ssd1306_DrawCharBig(*srcPointer,row,xPos);
+        ssd1306_drawcharbig(*srcPointer,row,xPos);
         srcPointer++;
         xPos+=12;
         if(*srcPointer == 0) break;
+    }
+}

ssd1306.h

➞

Show inline comments

@@ @@ -9,32 +9,25 @@ @@
 #define   SSD_Reset_High()  HAL_GPIO_WritePin(SSD_RESET, 1)
 #define   SSD_A0_Low()      HAL_GPIO_WritePin(SSD_A0, 0)
 #define   SSD_A0_High()     HAL_GPIO_WritePin(SSD_A0, 1)
 #define   SSD_CS_Low()      HAL_GPIO_WritePin(SSD_CS, 0)
 #define   SSD_CS_High()     HAL_GPIO_WritePin(SSD_CS, 1)
 // Use stdperiph
 //extern SPI_HandleTypeDef spi1;
 extern SPI_HandleTypeDef hspi1;
 // EMZ FIXME this won't really work
-#define   SPI_SendByte(data)  HAL_SPI_Transmit(&hspi1, &data, 1, 100)
+#define   SPI_SendByte(data)  HAL_SPI_Transmit(spi_get(), &data, 1, 100)
 //#define SPI_SendByte(data)
 #define SPI_Wait()
 //#define   SPI_SendByte(data)  SPI_I2S_SendData(SPI1,data)
 //#define   SPI_Wait()       while(!(SPI1->SR&SPI_FLAG_TXE));while(SPI1->SR&SPI_FLAG_BSY);
 void ssd1306_Init(void);
 void ssd1306_DrawChar(char ascii, unsigned char row, unsigned char xPos);
 void ssd1306_DrawCharBig(char ascii, unsigned char row, unsigned char xPos);
 void ssd1306_DrawString(const char *dataPtr, unsigned char row, unsigned char xPos);
 void ssd1306_DrawStringBig(const char *dataPtr, unsigned char row, unsigned char xPos);
 void ssd1306_init(void);
 void ssd1306_drawchar(char ascii, unsigned char row, unsigned char xPos);
 void ssd1306_drawcharbig(char ascii, unsigned char row, unsigned char xPos);
 void ssd1306_drawstring(const char *dataPtr, unsigned char row, unsigned char xPos);
 void ssd1306_drawstringbig(const char *dataPtr, unsigned char row, unsigned char xPos);
 void ssd1306_drawlogo();
 void ssd1306_clearscreen();
 #endif
 // vim:softtabstop=4 shiftwidth=4 expandtab

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