SPI API platform implementation stubs

Marlin/src/HAL/HAL_LPC1768/persistent_store_impl.cpp

@@ -0,0 +1,55 @@
+#ifdef TARGET_LPC1768
+#include "../persistent_store_api.h"
+
+#include "../../../types.h"
+#include "../../../language.h"
+#include "../../../serial.h"
+#include "../../../utility.h"
+
+#include "chanfs/diskio.h"
+#include "chanfs/ff.h"
+
+
+#if ENABLED(EEPROM_SETTINGS)
+
+namespace HAL {
+namespace PersistentStore {
+
+
+FATFS fat_fs;
+FIL eeprom_file;
+
+bool access_start() {
+  f_mount(&fat_fs, "", 1);
+  FRESULT res = f_open(&eeprom_file, "eeprom.dat", FA_OPEN_ALWAYS | FA_WRITE | FA_READ);
+  return (res == FR_OK);
+}
+
+bool access_finish(){
+  f_close(&eeprom_file);
+  f_unmount("");
+  return true;
+}
+
+bool write_data(int &pos, const uint8_t *value, uint16_t size, uint16_t *crc) {
+  UINT bytes_written = 0;
+  f_lseek(&eeprom_file, pos);
+  f_write(&eeprom_file, (void *)value, size, &bytes_written);
+  crc16(crc, value, size);
+  pos = pos + size;
+  return (bytes_written == size);
+}
+
+void read_data(int &pos, uint8_t* value, uint16_t size, uint16_t *crc) {
+  UINT bytes_read = 0;
+  f_lseek(&eeprom_file, pos);
+  f_read(&eeprom_file, (void *)value, size, &bytes_read);
+  crc16(crc, value, size);
+  pos = pos + size;
+}
+
+}
+}
+
+#endif // EEPROM_SETTINGS
+#endif // ARDUINO_ARCH_AVR