HAL cleanups

Marlin/src/HAL/HAL_DUE/HAL.h

@@ -112,10 +112,8 @@ uint8_t HAL_get_reset_source(void); // get reset reason
 
 // Write single byte to specified SPI channel
 void spiSend(uint32_t chan, byte b);
-
 // Write buffer to specified SPI channel
 void spiSend(uint32_t chan, const uint8_t* buf, size_t n);
-
 // Read single byte from specified SPI channel
 uint8_t spiRec(uint32_t chan);
 

Marlin/src/HAL/HAL_STM32/HAL.h

@@ -176,7 +176,10 @@ static inline int freeMemory() {
   return &top - reinterpret_cast<char*>(_sbrk(0));
 }
 
+//
 // SPI: Extended functions which take a channel number (hardware SPI only)
+//
+
 /** Write single byte to specified SPI channel */
 void spiSend(uint32_t chan, byte b);
 /** Write buffer to specified SPI channel */
@@ -184,18 +187,19 @@ void spiSend(uint32_t chan, const uint8_t* buf, size_t n);
 /** Read single byte from specified SPI channel */
 uint8_t spiRec(uint32_t chan);
 
-
+//
 // EEPROM
+//
 
-/**
- * Wire library should work for i2c eeproms.
- */
+// Wire library should work for i2c EEPROMs
 void eeprom_write_byte(uint8_t *pos, unsigned char value);
 uint8_t eeprom_read_byte(uint8_t *pos);
 void eeprom_read_block (void *__dst, const void *__src, size_t __n);
 void eeprom_update_block (const void *__src, void *__dst, size_t __n);
 
+//
 // ADC
+//
 
 #define HAL_ANALOG_SELECT(pin) pinMode(pin, INPUT)
 

Marlin/src/HAL/HAL_STM32F1/HAL.h

@@ -185,7 +185,10 @@ static int freeMemory() {
   return &top - reinterpret_cast<char*>(_sbrk(0));
 }
 
+//
 // SPI: Extended functions which take a channel number (hardware SPI only)
+//
+
 /** Write single byte to specified SPI channel */
 void spiSend(uint32_t chan, byte b);
 /** Write buffer to specified SPI channel */
@@ -193,19 +196,22 @@ void spiSend(uint32_t chan, const uint8_t* buf, size_t n);
 /** Read single byte from specified SPI channel */
 uint8_t spiRec(uint32_t chan);
 
-
+//
 // EEPROM
+//
 
 /**
- * TODO: Write all this eeprom stuff. Can emulate eeprom in flash as last resort.
- * Wire library should work for i2c eeproms.
+ * TODO: Write all this EEPROM stuff. Can emulate EEPROM in flash as last resort.
+ * Wire library should work for i2c EEPROMs.
  */
 void eeprom_write_byte(uint8_t *pos, unsigned char value);
 uint8_t eeprom_read_byte(uint8_t *pos);
 void eeprom_read_block (void *__dst, const void *__src, size_t __n);
 void eeprom_update_block (const void *__src, void *__dst, size_t __n);
 
+//
 // ADC
+//
 
 #define HAL_ANALOG_SELECT(pin) pinMode(pin, INPUT_ANALOG);
 

Marlin/src/HAL/HAL_STM32F4/HAL.h

@@ -195,7 +195,10 @@ static int freeMemory() {
   return &top - reinterpret_cast<char*>(_sbrk(0));
 }
 
+//
 // SPI: Extended functions which take a channel number (hardware SPI only)
+//
+
 /** Write single byte to specified SPI channel */
 void spiSend(uint32_t chan, byte b);
 /** Write buffer to specified SPI channel */
@@ -203,18 +206,22 @@ void spiSend(uint32_t chan, const uint8_t* buf, size_t n);
 /** Read single byte from specified SPI channel */
 uint8_t spiRec(uint32_t chan);
 
+//
 // EEPROM
+//
 
 /**
- * TODO: Write all this eeprom stuff. Can emulate eeprom in flash as last resort.
- * Wire library should work for i2c eeproms.
+ * TODO: Write all this EEPROM stuff. Can emulate EEPROM in flash as last resort.
+ * Wire library should work for i2c EEPROMs.
  */
 void eeprom_write_byte(uint8_t *pos, unsigned char value);
 uint8_t eeprom_read_byte(uint8_t *pos);
 void eeprom_read_block (void *__dst, const void *__src, size_t __n);
 void eeprom_update_block (const void *__src, void *__dst, size_t __n);
 
+//
 // ADC
+//
 
 #define HAL_ANALOG_SELECT(pin) pinMode(pin, INPUT)