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@ -27,7 +27,7 @@
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#include "../shared/persistent_store_api.h"
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#if NONE(SPI_EEPROM, I2C_EEPROM)
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#if ENABLED(FLASH_EEPROM_EMULATION)
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#define NVMCTRL_CMD(c) do{ \
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SYNC(!NVMCTRL->STATUS.bit.READY); \
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NVMCTRL->INTFLAG.bit.DONE = true; \
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@ -41,7 +41,7 @@
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#endif
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bool PersistentStore::access_start() {
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#if NONE(SPI_EEPROM, I2C_EEPROM)
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#if ENABLED(FLASH_EEPROM_EMULATION)
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NVMCTRL->SEECFG.reg = NVMCTRL_SEECFG_WMODE_BUFFERED; // Buffered mode and segment reallocation active
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#endif
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@ -49,7 +49,7 @@ bool PersistentStore::access_start() {
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}
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bool PersistentStore::access_finish() {
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#if NONE(SPI_EEPROM, I2C_EEPROM)
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#if ENABLED(FLASH_EEPROM_EMULATION)
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NVMCTRL_FLUSH();
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if (!NVMCTRL->SEESTAT.bit.LOCK)
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NVMCTRL_CMD(NVMCTRL_CTRLB_CMD_LSEE); // Lock E2P data write access
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@ -59,14 +59,20 @@ bool PersistentStore::access_finish() {
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}
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bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
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#if NONE(SPI_EEPROM, I2C_EEPROM)
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#if ENABLED(FLASH_EEPROM_EMULATION)
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if (NVMCTRL->SEESTAT.bit.RLOCK)
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NVMCTRL_CMD(NVMCTRL_CTRLB_CMD_USEE); // Unlock E2P data write access
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#endif
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while (size--) {
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const uint8_t v = *value;
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#if ANY(SPI_EEPROM, I2C_EEPROM)
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#if ENABLED(FLASH_EEPROM_EMULATION)
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SYNC(NVMCTRL->SEESTAT.bit.BUSY);
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if (NVMCTRL->INTFLAG.bit.SEESFULL)
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NVMCTRL_FLUSH(); // Next write will trigger a sector reallocation. I need to flush 'pagebuffer'
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((volatile uint8_t *)SEEPROM_ADDR)[pos] = v;
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SYNC(!NVMCTRL->INTFLAG.bit.SEEWRC);
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#else
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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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@ -76,12 +82,6 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
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return true;
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}
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}
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#else
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SYNC(NVMCTRL->SEESTAT.bit.BUSY);
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if (NVMCTRL->INTFLAG.bit.SEESFULL)
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NVMCTRL_FLUSH(); // Next write will trigger a sector reallocation. I need to flush 'pagebuffer'
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((volatile uint8_t *)SEEPROM_ADDR)[pos] = v;
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SYNC(!NVMCTRL->INTFLAG.bit.SEEWRC);
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#endif
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crc16(crc, &v, 1);
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pos++;
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@ -93,11 +93,11 @@ 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/*=true*/) {
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while (size--) {
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uint8_t c;
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#if ANY(SPI_EEPROM, I2C_EEPROM)
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c = eeprom_read_byte((uint8_t*)pos);
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#else
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#if ENABLED(FLASH_EEPROM_EMULATION)
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SYNC(NVMCTRL->SEESTAT.bit.BUSY);
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c = ((volatile uint8_t *)SEEPROM_ADDR)[pos];
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#else
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c = eeprom_read_byte((uint8_t*)pos);
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#endif
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if (writing) *value = c;
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crc16(crc, &c, 1);
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@ -108,9 +108,7 @@ 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 ANY(SPI_EEPROM, I2C_EEPROM)
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return E2END + 1;
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#else
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#if ENABLED(FLASH_EEPROM_EMULATION)
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const uint8_t psz = NVMCTRL->SEESTAT.bit.PSZ,
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sblk = NVMCTRL->SEESTAT.bit.SBLK;
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@ -121,6 +119,8 @@ size_t PersistentStore::capacity() {
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else if (sblk <= 4 || psz == 5) return 16384;
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else if (sblk >= 9 && psz == 7) return 65536;
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else return 32768;
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#else
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return E2END + 1;
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#endif
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}
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