Cleanup, comment "wired" eeproms

Marlin/src/HAL/AVR/eeprom.cpp

@@ -25,6 +25,11 @@
 
 #if EITHER(EEPROM_SETTINGS, SD_FIRMWARE_UPDATE)
 
+/**
+ * PersistentStore for Arduino-style EEPROM interface
+ * with implementations supplied by the framework.
+ */
+
 #include "../shared/eeprom_api.h"
 
 size_t PersistentStore::capacity()    { return E2END + 1; }

Marlin/src/HAL/DUE/eeprom_wired.cpp

@@ -26,6 +26,11 @@
 
 #if USE_WIRED_EEPROM
 
+/**
+ * PersistentStore for Arduino-style EEPROM interface
+ * with simple implementations supplied by Marlin.
+ */
+
 #include "../shared/eeprom_if.h"
 #include "../shared/eeprom_api.h"
 

Marlin/src/HAL/LPC1768/eeprom_wired.cpp

@@ -25,20 +25,25 @@
 
 #if USE_WIRED_EEPROM
 
-#include "../shared/eeprom_if.h"
+/**
+ * PersistentStore for Arduino-style EEPROM interface
+ * with implementations supplied by the framework.
+ */
+
 #include "../shared/eeprom_api.h"
 
 #ifndef EEPROM_SIZE
   #define EEPROM_SIZE           0x8000 // 32kB‬
 #endif
 
+size_t PersistentStore::capacity()    { return EEPROM_SIZE; }
+bool PersistentStore::access_finish() { return true; }
+
 bool PersistentStore::access_start() {
   TERN_(SPI_EEPROM, eeprom_init());
   return true;
 }
 
-bool PersistentStore::access_finish() { return true; }
-
 bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
   while (size--) {
     uint8_t v = *value;
@@ -75,7 +80,5 @@ bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t
   return false;
 }
 
-size_t PersistentStore::capacity() { return EEPROM_SIZE; }
-
 #endif // USE_WIRED_EEPROM
 #endif // TARGET_LPC1768

Marlin/src/HAL/SAMD51/eeprom_wired.cpp

@@ -24,6 +24,11 @@
 
 #if USE_WIRED_EEPROM
 
+/**
+ * PersistentStore for Arduino-style EEPROM interface
+ * with simple implementations supplied by Marlin.
+ */
+
 #include "../shared/eeprom_if.h"
 #include "../shared/eeprom_api.h"
 

Marlin/src/HAL/STM32/eeprom_wired.cpp

@@ -26,14 +26,21 @@
 
 #if USE_WIRED_EEPROM
 
+/**
+ * PersistentStore for Arduino-style EEPROM interface
+ * with simple implementations supplied by Marlin.
+ */
 
 #include "../shared/eeprom_if.h"
 #include "../shared/eeprom_api.h"
 
 size_t PersistentStore::capacity()    { return E2END + 1; }
-bool PersistentStore::access_start()  { return true; }
 bool PersistentStore::access_finish() { return true; }
 
+bool PersistentStore::access_start()  {
+  return true;
+}
+
 bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
   while (size--) {
     uint8_t v = *value;

Marlin/src/HAL/STM32F1/eeprom_wired.cpp

@@ -23,6 +23,11 @@
 
 #if USE_WIRED_EEPROM
 
+/**
+ * PersistentStore for Arduino-style EEPROM interface
+ * with simple implementations supplied by Marlin.
+ */
+
 #include "../shared/eeprom_if.h"
 #include "../shared/eeprom_api.h"
 

Marlin/src/HAL/STM32_F4_F7/eeprom_wired.cpp

@@ -24,7 +24,12 @@
 
 #include "../../inc/MarlinConfig.h"
 
-#if ENABLED(EEPROM_SETTINGS)
+#if USE_WIRED_EEPROM
+
+/**
+ * PersistentStore for Arduino-style EEPROM interface
+ * with simple implementations supplied by Marlin.
+ */
 
 #include "../shared/eeprom_if.h"
 #include "../shared/eeprom_api.h"
@@ -33,6 +38,10 @@ size_t PersistentStore::capacity()    { return E2END + 1; }
 bool PersistentStore::access_start()  { return true; }
 bool PersistentStore::access_finish() { return true; }
 
+bool PersistentStore::access_start()  {
+  return true;
+}
+
 bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
   while (size--) {
     uint8_t * const p = (uint8_t * const)pos;
@@ -64,5 +73,5 @@ bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t
   return false;
 }
 
-#endif // EEPROM_SETTINGS
+#endif // USE_WIRED_EEPROM
 #endif // STM32GENERIC && (STM32F4 || STM32F7)

Marlin/src/HAL/STM32_F4_F7/inc/Conditionals_post.h

@@ -26,5 +26,4 @@
   #undef SRAM_EEPROM_EMULATION
   #undef SDCARD_EEPROM_EMULATION
   #define FLASH_EEPROM_EMULATION
-  #warning "Forcing use of FLASH_EEPROM_EMULATION."
 #endif

Marlin/src/HAL/TEENSY31_32/eeprom.cpp

@@ -22,6 +22,11 @@
 
 #if USE_WIRED_EEPROM
 
+/**
+ * PersistentStore for Arduino-style EEPROM interface
+ * with implementations supplied by the framework.
+ */
+
 #include "../shared/eeprom_api.h"
 
 bool PersistentStore::access_start() { return true; }

Marlin/src/HAL/TEENSY35_36/eeprom.cpp

@@ -26,6 +26,11 @@
 
 #if USE_WIRED_EEPROM
 
+/**
+ * PersistentStore for Arduino-style EEPROM interface
+ * with implementations supplied by the framework.
+ */
+
 #include "../shared/eeprom_api.h"
 #include <avr/eeprom.h>