Minimal interface for F4/F7 flash

This commit is contained in:
Scott Lahteine 2020-04-29 16:31:58 -05:00
parent 3c080ee3e6
commit 7f5730ea3b
3 changed files with 44 additions and 45 deletions

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@ -49,7 +49,7 @@
*/
#if defined(STM32GENERIC) && (defined(STM32F4) || defined(STM32F7))
#include "../../inc/MarlinConfigPre.h"
#include "../../inc/MarlinConfig.h"
#if ENABLED(FLASH_EEPROM_EMULATION)
@ -65,7 +65,7 @@ uint16_t DataVar = 0;
uint16_t VirtAddVarTab[NB_OF_VAR];
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
static HAL_StatusTypeDef EE_Format();
static uint16_t EE_FindValidPage(uint8_t Operation);
static uint16_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Data);
@ -79,6 +79,9 @@ static uint16_t EE_VerifyPageFullyErased(uint32_t Address);
* @retval - Flash error code: on write Flash error
* - FLASH_COMPLETE: on success
*/
/* Private functions ---------------------------------------------------------*/
uint16_t EE_Initialize() {
/* Get Page0 and Page1 status */
uint16_t PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS),

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@ -50,7 +50,6 @@
// ------------------------
#include "../../inc/MarlinConfig.h"
#include "HAL.h"
/* Exported constants --------------------------------------------------------*/
/* EEPROM emulation firmware error codes */

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@ -18,26 +18,12 @@
*/
#if defined(STM32GENERIC) && (defined(STM32F4) || defined(STM32F7))
/**
* Arduino-style interface for Flash emulated EEPROM
*/
// Include configs and pins to get all EEPROM flags
#include "../../inc/MarlinConfig.h"
#if ENABLED(FLASH_EEPROM_EMULATION)
// ------------------------
// Includes
// ------------------------
#include "HAL.h"
#include "../shared/eeprom_api.h"
#include "eeprom_emul.h"
#include "../shared/eeprom_if.h"
// ------------------------
// Local defines
// ------------------------
// FLASH_FLAG_PGSERR (Programming Sequence Error) was renamed to
// FLASH_FLAG_ERSERR (Erasing Sequence Error) in STM32F4/7
@ -48,18 +34,9 @@
//#define FLASH_FLAG_PGSERR FLASH_FLAG_ERSERR
#endif
// ------------------------
// Private Variables
// ------------------------
static bool eeprom_initialized = false;
// ------------------------
// Public functions
// ------------------------
void eeprom_init() {
if (!eeprom_initialized) {
void ee_init() {
static bool ee_initialized = false;
if (!ee_initialized) {
HAL_FLASH_Unlock();
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
@ -69,12 +46,12 @@ void eeprom_init() {
for (;;) HAL_Delay(1); // Spin forever until watchdog reset
HAL_FLASH_Lock();
eeprom_initialized = true;
ee_initialized = true;
}
}
void eeprom_write_byte(uint8_t *pos, unsigned char value) {
eeprom_init();
void ee_write_byte(uint8_t *pos, unsigned char value) {
ee_init();
HAL_FLASH_Unlock();
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
@ -86,8 +63,8 @@ void eeprom_write_byte(uint8_t *pos, unsigned char value) {
HAL_FLASH_Lock();
}
uint8_t eeprom_read_byte(uint8_t *pos) {
eeprom_init();
uint8_t ee_read_byte(uint8_t *pos) {
ee_init();
uint16_t data = 0xFF;
const unsigned eeprom_address = (unsigned)pos;
@ -96,19 +73,39 @@ uint8_t eeprom_read_byte(uint8_t *pos) {
return uint8_t(data);
}
void eeprom_read_block(void *__dst, const void *__src, size_t __n) {
eeprom_init();
size_t PersistentStore::capacity() { return E2END + 1; }
bool PersistentStore::access_start() { return true; }
bool PersistentStore::access_finish() { return true; }
uint16_t data = 0xFF;
const unsigned eeprom_address = (unsigned)__src;
LOOP_L_N(c, __n) {
EE_ReadVariable(eeprom_address+c, &data);
*((uint8_t*)__dst + c) = data;
}
bool PersistentStore::write_data(int &pos, const uint8_t *value, size_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 != ee_read_byte(p)) {
ee_write_byte(p, v);
if (ee_read_byte(p) != v) {
SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
return true;
}
}
crc16(crc, &v, 1);
pos++;
value++;
};
return false;
}
void eeprom_update_block(const void *__src, void *__dst, size_t __n) {
bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
do {
uint8_t c = ee_read_byte((uint8_t*)pos);
if (writing) *value = c;
crc16(crc, &c, 1);
pos++;
value++;
} while (--size);
return false;
}
#endif // FLASH_EEPROM_EMULATION