60 lines
1.2 KiB
C++
60 lines
1.2 KiB
C++
#ifdef ARDUINO_ARCH_SAM
|
|
|
|
#include "../persistent_store_api.h"
|
|
|
|
#include "../../inc/MarlinConfig.h"
|
|
|
|
#if ENABLED(EEPROM_SETTINGS)
|
|
|
|
extern void eeprom_flush(void);
|
|
|
|
namespace HAL {
|
|
namespace PersistentStore {
|
|
|
|
bool access_start() { return true; }
|
|
|
|
bool access_finish() {
|
|
#if DISABLED(I2C_EEPROM) && DISABLED(SPI_EEPROM)
|
|
eeprom_flush();
|
|
#endif
|
|
return true;
|
|
}
|
|
|
|
bool write_data(int &pos, const uint8_t *value, uint16_t size, uint16_t *crc) {
|
|
while (size--) {
|
|
uint8_t * const p = (uint8_t * const)pos;
|
|
uint8_t v = *value;
|
|
// EEPROM has only ~100,000 write cycles,
|
|
// so only write bytes that have changed!
|
|
if (v != eeprom_read_byte(p)) {
|
|
eeprom_write_byte(p, v);
|
|
if (eeprom_read_byte(p) != v) {
|
|
SERIAL_ECHO_START();
|
|
SERIAL_ECHOLNPGM(MSG_ERR_EEPROM_WRITE);
|
|
return true;
|
|
}
|
|
}
|
|
crc16(crc, &v, 1);
|
|
pos++;
|
|
value++;
|
|
};
|
|
return false;
|
|
}
|
|
|
|
bool read_data(int &pos, uint8_t* value, uint16_t size, uint16_t *crc, const bool writing/*=true*/) {
|
|
do {
|
|
uint8_t c = eeprom_read_byte((unsigned char*)pos);
|
|
if (writing) *value = c;
|
|
crc16(crc, &c, 1);
|
|
pos++;
|
|
value++;
|
|
} while (--size);
|
|
return false;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
#endif // EEPROM_SETTINGS
|
|
#endif // __AVR__
|