58 lines
1.1 KiB
C++
58 lines
1.1 KiB
C++
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#include "../persistent_store_api.h"
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#include "../../../types.h"
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#include "../../../language.h"
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#include "../../../serial.h"
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#include "../../../utility.h"
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#ifdef ARDUINO_ARCH_SAM
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#if ENABLED(EEPROM_SETTINGS)
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namespace HAL {
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namespace PersistentStore {
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bool access_start() {
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return true;
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}
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bool access_finish(){
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return true;
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}
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bool write_data(int &pos, const uint8_t *value, uint16_t size, uint16_t *crc) {
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while (size--) {
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uint8_t * const p = (uint8_t * const)pos;
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uint8_t v = *value;
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// EEPROM has only ~100,000 write cycles,
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// so only write bytes that have changed!
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if (v != eeprom_read_byte(p)) {
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eeprom_write_byte(p, v);
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if (eeprom_read_byte(p) != v) {
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SERIAL_ECHO_START();
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SERIAL_ECHOLNPGM(MSG_ERR_EEPROM_WRITE);
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return false;
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}
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}
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crc16(crc, &v, 1);
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pos++;
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value++;
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};
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return true;
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}
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void read_data(int &pos, uint8_t* value, uint16_t size, uint16_t *crc) {
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do {
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uint8_t c = eeprom_read_byte((unsigned char*)pos);
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*value = c;
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crc16(crc, &c, 1);
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pos++;
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value++;
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} while (--size);
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}
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}
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}
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#endif // EEPROM_SETTINGS
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#endif // ARDUINO_ARCH_AVR
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