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@ -28,20 +28,20 @@ |
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#include "../shared/persistent_store_api.h" |
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#if DISABLED(EEPROM_EMULATED_WITH_SRAM) |
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#if DISABLED(EEPROM_EMULATED_WITH_SRAM) && DISABLED(SPI_EEPROM) && DISABLED(I2C_EEPROM) |
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#include <EEPROM.h> |
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static bool eeprom_data_written = false; |
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#endif |
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bool PersistentStore::access_start() { |
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#if DISABLED(EEPROM_EMULATED_WITH_SRAM) |
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#if DISABLED(EEPROM_EMULATED_WITH_SRAM) && DISABLED(SPI_EEPROM) && DISABLED(I2C_EEPROM) |
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eeprom_buffer_fill(); |
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#endif |
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return true; |
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} |
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bool PersistentStore::access_finish() { |
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#if DISABLED(EEPROM_EMULATED_WITH_SRAM) |
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#if DISABLED(EEPROM_EMULATED_WITH_SRAM) && DISABLED(SPI_EEPROM) && DISABLED(I2C_EEPROM) |
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if (eeprom_data_written) { |
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eeprom_buffer_flush(); |
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eeprom_data_written = false; |
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@ -54,8 +54,20 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui |
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while (size--) { |
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uint8_t v = *value; |
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// Save to either program flash or Backup SRAM
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#if DISABLED(EEPROM_EMULATED_WITH_SRAM) |
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// Save to either external EEPROM, program flash or Backup SRAM
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#if ENABLED(SPI_EEPROM) || ENABLED(I2C_EEPROM) |
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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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uint8_t * const p = (uint8_t * const)pos; |
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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 true; |
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} |
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} |
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#elif DISABLED(EEPROM_EMULATED_WITH_SRAM) |
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eeprom_buffered_write_byte(pos, v); |
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#else |
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*(__IO uint8_t *)(BKPSRAM_BASE + (uint8_t * const)pos) = v; |
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@ -65,7 +77,7 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui |
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pos++; |
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value++; |
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}; |
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#if DISABLED(EEPROM_EMULATED_WITH_SRAM) |
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#if DISABLED(EEPROM_EMULATED_WITH_SRAM) && DISABLED(SPI_EEPROM) && DISABLED(I2C_EEPROM) |
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eeprom_data_written = true; |
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#endif |
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@ -74,9 +86,11 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui |
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bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t *crc, const bool writing) { |
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do { |
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// Read from either program flash or Backup SRAM
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// Read from either external EEPROM, program flash or Backup SRAM
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const uint8_t c = ( |
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#if DISABLED(EEPROM_EMULATED_WITH_SRAM) |
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#if ENABLED(SPI_EEPROM) || ENABLED(I2C_EEPROM) |
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eeprom_read_byte((uint8_t*)pos) |
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#elif DISABLED(EEPROM_EMULATED_WITH_SRAM) |
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eeprom_buffered_read_byte(pos) |
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#else |
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(*(__IO uint8_t *)(BKPSRAM_BASE + ((uint8_t*)pos))) |
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@ -92,7 +106,9 @@ bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t |
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} |
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size_t PersistentStore::capacity() { |
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#if DISABLED(EEPROM_EMULATED_WITH_SRAM) |
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#if ENABLED(SPI_EEPROM) || ENABLED(I2C_EEPROM) |
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return E2END + 1; |
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#elif DISABLED(EEPROM_EMULATED_WITH_SRAM) |
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return E2END + 1; |
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#else |
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return 4096; // 4kB
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