From 2bfac351edebc6e141d3291448512b0e228e5c47 Mon Sep 17 00:00:00 2001 From: yiancar Date: Mon, 7 Jan 2019 01:22:19 +0000 Subject: Final HS60v2 changes. (#4790) * initial commit, this now mostly works - RGB controls work - Dynamic keymap still broken due to eeprom - Via works * STM32 eeprom update - Update EEPROM emulation library to handle 8bit data like AVR. - This library also allows for multiple page pairs resulting in greater EEPROM size flexibility * hs60 changes * HS60 hhkb added * Update keyboards/hs60/v2/config.h Co-Authored-By: yiancar --- tmk_core/common/chibios/eeprom_stm32.c | 710 ++++++--------------------------- 1 file changed, 126 insertions(+), 584 deletions(-) (limited to 'tmk_core/common/chibios/eeprom_stm32.c') diff --git a/tmk_core/common/chibios/eeprom_stm32.c b/tmk_core/common/chibios/eeprom_stm32.c index a86998550..a15430d67 100755 --- a/tmk_core/common/chibios/eeprom_stm32.c +++ b/tmk_core/common/chibios/eeprom_stm32.c @@ -10,664 +10,206 @@ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * - * This files are free to use from https://github.com/rogerclarkmelbourne/Arduino_STM32 and - * https://github.com/leaflabs/libmaple + * This files are free to use from http://engsta.com/stm32-flash-memory-eeprom-emulator/ by + * Artur F. * * Modifications for QMK and STM32F303 by Yiancar */ +#include +#include #include "eeprom_stm32.h" +/***************************************************************************** + * Allows to use the internal flash to store non volatile data. To initialize + * the functionality use the EEPROM_Init() function. Be sure that by reprogramming + * of the controller just affected pages will be deleted. In other case the non + * volatile data will be lost. +******************************************************************************/ + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Functions -----------------------------------------------------------------*/ + +uint8_t DataBuf[FEE_PAGE_SIZE]; +/***************************************************************************** +* Delete Flash Space used for user Data, deletes the whole space between +* RW_PAGE_BASE_ADDRESS and the last uC Flash Page +******************************************************************************/ +uint16_t EEPROM_Init(void) { + // unlock flash + FLASH_Unlock(); - FLASH_Status EE_ErasePage(uint32_t); - - uint16_t EE_CheckPage(uint32_t, uint16_t); - uint16_t EE_CheckErasePage(uint32_t, uint16_t); - uint16_t EE_Format(void); - uint32_t EE_FindValidPage(void); - uint16_t EE_GetVariablesCount(uint32_t, uint16_t); - uint16_t EE_PageTransfer(uint32_t, uint32_t, uint16_t); - uint16_t EE_VerifyPageFullWriteVariable(uint16_t, uint16_t); - - uint32_t PageBase0 = EEPROM_PAGE0_BASE; - uint32_t PageBase1 = EEPROM_PAGE1_BASE; - uint32_t PageSize = EEPROM_PAGE_SIZE; - uint16_t Status = EEPROM_NOT_INIT; - -// See http://www.st.com/web/en/resource/technical/document/application_note/CD00165693.pdf - -/** - * @brief Check page for blank - * @param page base address - * @retval Success or error - * EEPROM_BAD_FLASH: page not empty after erase - * EEPROM_OK: page blank - */ -uint16_t EE_CheckPage(uint32_t pageBase, uint16_t status) -{ - uint32_t pageEnd = pageBase + (uint32_t)PageSize; - - // Page Status not EEPROM_ERASED and not a "state" - if ((*(__IO uint16_t*)pageBase) != EEPROM_ERASED && (*(__IO uint16_t*)pageBase) != status) - return EEPROM_BAD_FLASH; - for(pageBase += 4; pageBase < pageEnd; pageBase += 4) - if ((*(__IO uint32_t*)pageBase) != 0xFFFFFFFF) // Verify if slot is empty - return EEPROM_BAD_FLASH; - return EEPROM_OK; -} - -/** - * @brief Erase page with increment erase counter (page + 2) - * @param page base address - * @retval Success or error - * FLASH_COMPLETE: success erase - * - Flash error code: on write Flash error - */ -FLASH_Status EE_ErasePage(uint32_t pageBase) -{ - FLASH_Status FlashStatus; - uint16_t data = (*(__IO uint16_t*)(pageBase)); - if ((data == EEPROM_ERASED) || (data == EEPROM_VALID_PAGE) || (data == EEPROM_RECEIVE_DATA)) - data = (*(__IO uint16_t*)(pageBase + 2)) + 1; - else - data = 0; - - FlashStatus = FLASH_ErasePage(pageBase); - if (FlashStatus == FLASH_COMPLETE) - FlashStatus = FLASH_ProgramHalfWord(pageBase + 2, data); - - return FlashStatus; -} + // Clear Flags + //FLASH_ClearFlag(FLASH_SR_EOP|FLASH_SR_PGERR|FLASH_SR_WRPERR); -/** - * @brief Check page for blank and erase it - * @param page base address - * @retval Success or error - * - Flash error code: on write Flash error - * - EEPROM_BAD_FLASH: page not empty after erase - * - EEPROM_OK: page blank - */ -uint16_t EE_CheckErasePage(uint32_t pageBase, uint16_t status) -{ - uint16_t FlashStatus; - if (EE_CheckPage(pageBase, status) != EEPROM_OK) - { - FlashStatus = EE_ErasePage(pageBase); - if (FlashStatus != FLASH_COMPLETE) - return FlashStatus; - return EE_CheckPage(pageBase, status); - } - return EEPROM_OK; + return FEE_DENSITY_BYTES; } +/***************************************************************************** +* Erase the whole reserved Flash Space used for user Data +******************************************************************************/ +void EEPROM_Erase (void) { -/** - * @brief Find valid Page for write or read operation - * @param Page0: Page0 base address - * Page1: Page1 base address - * @retval Valid page address (PAGE0 or PAGE1) or NULL in case of no valid page was found - */ -uint32_t EE_FindValidPage(void) -{ - uint16_t status0 = (*(__IO uint16_t*)PageBase0); // Get Page0 actual status - uint16_t status1 = (*(__IO uint16_t*)PageBase1); // Get Page1 actual status - - if (status0 == EEPROM_VALID_PAGE && status1 == EEPROM_ERASED) - return PageBase0; - if (status1 == EEPROM_VALID_PAGE && status0 == EEPROM_ERASED) - return PageBase1; - - return 0; -} + int page_num = 0; -/** - * @brief Calculate unique variables in EEPROM - * @param start: address of first slot to check (page + 4) - * @param end: page end address - * @param address: 16 bit virtual address of the variable to excluse (or 0XFFFF) - * @retval count of variables - */ -uint16_t EE_GetVariablesCount(uint32_t pageBase, uint16_t skipAddress) -{ - uint16_t varAddress, nextAddress; - uint32_t idx; - uint32_t pageEnd = pageBase + (uint32_t)PageSize; - uint16_t count = 0; - - for (pageBase += 6; pageBase < pageEnd; pageBase += 4) - { - varAddress = (*(__IO uint16_t*)pageBase); - if (varAddress == 0xFFFF || varAddress == skipAddress) - continue; - - count++; - for(idx = pageBase + 4; idx < pageEnd; idx += 4) - { - nextAddress = (*(__IO uint16_t*)idx); - if (nextAddress == varAddress) - { - count--; - break; - } - } - } - return count; + // delete all pages from specified start page to the last page + do { + FLASH_ErasePage(FEE_PAGE_BASE_ADDRESS + (page_num * FEE_PAGE_SIZE)); + page_num++; + } while (page_num < FEE_DENSITY_PAGES); } +/***************************************************************************** +* Writes once data byte to flash on specified address. If a byte is already +* written, the whole page must be copied to a buffer, the byte changed and +* the manipulated buffer written after PageErase. +*******************************************************************************/ +uint16_t EEPROM_WriteDataByte (uint16_t Address, uint8_t DataByte) { -/** - * @brief Transfers last updated variables data from the full Page to an empty one. - * @param newPage: new page base address - * @param oldPage: old page base address - * @param SkipAddress: 16 bit virtual address of the variable (or 0xFFFF) - * @retval Success or error status: - * - FLASH_COMPLETE: on success - * - EEPROM_OUT_SIZE: if valid new page is full - * - Flash error code: on write Flash error - */ -uint16_t EE_PageTransfer(uint32_t newPage, uint32_t oldPage, uint16_t SkipAddress) -{ - uint32_t oldEnd, newEnd; - uint32_t oldIdx, newIdx, idx; - uint16_t address, data, found; - FLASH_Status FlashStatus; - - // Transfer process: transfer variables from old to the new active page - newEnd = newPage + ((uint32_t)PageSize); - - // Find first free element in new page - for (newIdx = newPage + 4; newIdx < newEnd; newIdx += 4) - if ((*(__IO uint32_t*)newIdx) == 0xFFFFFFFF) // Verify if element - break; // contents are 0xFFFFFFFF - if (newIdx >= newEnd) - return EEPROM_OUT_SIZE; - - oldEnd = oldPage + 4; - oldIdx = oldPage + (uint32_t)(PageSize - 2); - - for (; oldIdx > oldEnd; oldIdx -= 4) - { - address = *(__IO uint16_t*)oldIdx; - if (address == 0xFFFF || address == SkipAddress) - continue; // it's means that power off after write data - - found = 0; - for (idx = newPage + 6; idx < newIdx; idx += 4) - if ((*(__IO uint16_t*)(idx)) == address) - { - found = 1; - break; - } - - if (found) - continue; - - if (newIdx < newEnd) - { - data = (*(__IO uint16_t*)(oldIdx - 2)); - - FlashStatus = FLASH_ProgramHalfWord(newIdx, data); - if (FlashStatus != FLASH_COMPLETE) - return FlashStatus; + FLASH_Status FlashStatus = FLASH_COMPLETE; - FlashStatus = FLASH_ProgramHalfWord(newIdx + 2, address); - if (FlashStatus != FLASH_COMPLETE) - return FlashStatus; + uint32_t page; + int i; - newIdx += 4; - } - else - return EEPROM_OUT_SIZE; + // exit if desired address is above the limit (e.G. under 2048 Bytes for 4 pages) + if (Address > FEE_DENSITY_BYTES) { + return 0; } - // Erase the old Page: Set old Page status to EEPROM_EEPROM_ERASED status - data = EE_CheckErasePage(oldPage, EEPROM_ERASED); - if (data != EEPROM_OK) - return data; + // calculate which page is affected (Pagenum1/Pagenum2...PagenumN) + page = (FEE_PAGE_BASE_ADDRESS + FEE_ADDR_OFFSET(Address)) & 0x00000FFF; - // Set new Page status - FlashStatus = FLASH_ProgramHalfWord(newPage, EEPROM_VALID_PAGE); - if (FlashStatus != FLASH_COMPLETE) - return FlashStatus; + if (page % FEE_PAGE_SIZE) page = page + FEE_PAGE_SIZE; + page = (page / FEE_PAGE_SIZE) - 1; - return EEPROM_OK; -} + // if current data is 0xFF, the byte is empty, just overwrite with the new one + if ((*(__IO uint16_t*)(FEE_PAGE_BASE_ADDRESS + FEE_ADDR_OFFSET(Address))) == FEE_EMPTY_WORD) { -/** - * @brief Verify if active page is full and Writes variable in EEPROM. - * @param Address: 16 bit virtual address of the variable - * @param Data: 16 bit data to be written as variable value - * @retval Success or error status: - * - FLASH_COMPLETE: on success - * - EEPROM_PAGE_FULL: if valid page is full (need page transfer) - * - EEPROM_NO_VALID_PAGE: if no valid page was found - * - EEPROM_OUT_SIZE: if EEPROM size exceeded - * - Flash error code: on write Flash error - */ -uint16_t EE_VerifyPageFullWriteVariable(uint16_t Address, uint16_t Data) -{ - FLASH_Status FlashStatus; - uint32_t idx, pageBase, pageEnd, newPage; - uint16_t count; - - // Get valid Page for write operation - pageBase = EE_FindValidPage(); - if (pageBase == 0) - return EEPROM_NO_VALID_PAGE; - - // Get the valid Page end Address - pageEnd = pageBase + PageSize; // Set end of page - - for (idx = pageEnd - 2; idx > pageBase; idx -= 4) - { - if ((*(__IO uint16_t*)idx) == Address) // Find last value for address - { - count = (*(__IO uint16_t*)(idx - 2)); // Read last data - if (count == Data) - return EEPROM_OK; - if (count == 0xFFFF) - { - FlashStatus = FLASH_ProgramHalfWord(idx - 2, Data); // Set variable data - if (FlashStatus == FLASH_COMPLETE) - return EEPROM_OK; - } - break; - } + FlashStatus = FLASH_ProgramHalfWord(FEE_PAGE_BASE_ADDRESS + FEE_ADDR_OFFSET(Address), (uint16_t)(0x00FF & DataByte)); } + else { - // Check each active page address starting from begining - for (idx = pageBase + 4; idx < pageEnd; idx += 4) - if ((*(__IO uint32_t*)idx) == 0xFFFFFFFF) // Verify if element - { // contents are 0xFFFFFFFF - FlashStatus = FLASH_ProgramHalfWord(idx, Data); // Set variable data - if (FlashStatus != FLASH_COMPLETE) - return FlashStatus; - FlashStatus = FLASH_ProgramHalfWord(idx + 2, Address); // Set variable virtual address - if (FlashStatus != FLASH_COMPLETE) - return FlashStatus; - return EEPROM_OK; - } - - // Empty slot not found, need page transfer - // Calculate unique variables in page - count = EE_GetVariablesCount(pageBase, Address) + 1; - if (count >= (PageSize / 4 - 1)) - return EEPROM_OUT_SIZE; - - if (pageBase == PageBase1) - newPage = PageBase0; // New page address where variable will be moved to - else - newPage = PageBase1; - - // Set the new Page status to RECEIVE_DATA status - FlashStatus = FLASH_ProgramHalfWord(newPage, EEPROM_RECEIVE_DATA); - if (FlashStatus != FLASH_COMPLETE) - return FlashStatus; - - // Write the variable passed as parameter in the new active page - FlashStatus = FLASH_ProgramHalfWord(newPage + 4, Data); - if (FlashStatus != FLASH_COMPLETE) - return FlashStatus; - - FlashStatus = FLASH_ProgramHalfWord(newPage + 6, Address); - if (FlashStatus != FLASH_COMPLETE) - return FlashStatus; - - return EE_PageTransfer(newPage, pageBase, Address); -} - -/*EEPROMClass::EEPROMClass(void) -{ - PageBase0 = EEPROM_PAGE0_BASE; - PageBase1 = EEPROM_PAGE1_BASE; - PageSize = EEPROM_PAGE_SIZE; - Status = EEPROM_NOT_INIT; -}*/ -/* -uint16_t EEPROM_init(uint32_t pageBase0, uint32_t pageBase1, uint32_t pageSize) -{ - PageBase0 = pageBase0; - PageBase1 = pageBase1; - PageSize = pageSize; - return EEPROM_init(); -}*/ + // Copy Page to a buffer + memcpy(DataBuf, (uint8_t*)FEE_PAGE_BASE_ADDRESS + (page * FEE_PAGE_SIZE), FEE_PAGE_SIZE); // !!! Calculate base address for the desired page -uint16_t EEPROM_init(void) -{ - uint16_t status0 = 6, status1 = 6; - FLASH_Status FlashStatus; + // check if new data is differ to current data, return if not, proceed if yes + if (DataByte == *(__IO uint8_t*)(FEE_PAGE_BASE_ADDRESS + FEE_ADDR_OFFSET(Address))) { + return 0; + } - FLASH_Unlock(); - Status = EEPROM_NO_VALID_PAGE; + // manipulate desired data byte in temp data array if new byte is differ to the current + DataBuf[FEE_ADDR_OFFSET(Address)] = DataByte; - status0 = (*(__IO uint16_t *)PageBase0); - status1 = (*(__IO uint16_t *)PageBase1); + //Erase Page + FlashStatus = FLASH_ErasePage(FEE_PAGE_BASE_ADDRESS + page); - switch (status0) - { -/* - Page0 Page1 - ----- ----- - EEPROM_ERASED EEPROM_VALID_PAGE Page1 valid, Page0 erased - EEPROM_RECEIVE_DATA Page1 need set to valid, Page0 erased - EEPROM_ERASED make EE_Format - any Error: EEPROM_NO_VALID_PAGE -*/ - case EEPROM_ERASED: - if (status1 == EEPROM_VALID_PAGE) // Page0 erased, Page1 valid - Status = EE_CheckErasePage(PageBase0, EEPROM_ERASED); - else if (status1 == EEPROM_RECEIVE_DATA) // Page0 erased, Page1 receive - { - FlashStatus = FLASH_ProgramHalfWord(PageBase1, EEPROM_VALID_PAGE); - if (FlashStatus != FLASH_COMPLETE) - Status = FlashStatus; - else - Status = EE_CheckErasePage(PageBase0, EEPROM_ERASED); - } - else if (status1 == EEPROM_ERASED) // Both in erased state so format EEPROM - Status = EEPROM_format(); - break; -/* - Page0 Page1 - ----- ----- - EEPROM_RECEIVE_DATA EEPROM_VALID_PAGE Transfer Page1 to Page0 - EEPROM_ERASED Page0 need set to valid, Page1 erased - any EEPROM_NO_VALID_PAGE -*/ - case EEPROM_RECEIVE_DATA: - if (status1 == EEPROM_VALID_PAGE) // Page0 receive, Page1 valid - Status = EE_PageTransfer(PageBase0, PageBase1, 0xFFFF); - else if (status1 == EEPROM_ERASED) // Page0 receive, Page1 erased - { - Status = EE_CheckErasePage(PageBase1, EEPROM_ERASED); - if (Status == EEPROM_OK) - { - FlashStatus = FLASH_ProgramHalfWord(PageBase0, EEPROM_VALID_PAGE); - if (FlashStatus != FLASH_COMPLETE) - Status = FlashStatus; - else - Status = EEPROM_OK; + // Write new data (whole page) to flash if data has beed changed + for(i = 0; i < (FEE_PAGE_SIZE / 2); i++) { + if ((__IO uint16_t)(0xFF00 | DataBuf[FEE_ADDR_OFFSET(i)]) != 0xFFFF) { + FlashStatus = FLASH_ProgramHalfWord((FEE_PAGE_BASE_ADDRESS + (page * FEE_PAGE_SIZE)) + (i * 2), (uint16_t)(0xFF00 | DataBuf[FEE_ADDR_OFFSET(i)])); } } - break; -/* - Page0 Page1 - ----- ----- - EEPROM_VALID_PAGE EEPROM_VALID_PAGE Error: EEPROM_NO_VALID_PAGE - EEPROM_RECEIVE_DATA Transfer Page0 to Page1 - any Page0 valid, Page1 erased -*/ - case EEPROM_VALID_PAGE: - if (status1 == EEPROM_VALID_PAGE) // Both pages valid - Status = EEPROM_NO_VALID_PAGE; - else if (status1 == EEPROM_RECEIVE_DATA) - Status = EE_PageTransfer(PageBase1, PageBase0, 0xFFFF); - else - Status = EE_CheckErasePage(PageBase1, EEPROM_ERASED); - break; -/* - Page0 Page1 - ----- ----- - any EEPROM_VALID_PAGE Page1 valid, Page0 erased - EEPROM_RECEIVE_DATA Page1 valid, Page0 erased - any EEPROM_NO_VALID_PAGE -*/ - default: - if (status1 == EEPROM_VALID_PAGE) - Status = EE_CheckErasePage(PageBase0, EEPROM_ERASED); // Check/Erase Page0 - else if (status1 == EEPROM_RECEIVE_DATA) - { - FlashStatus = FLASH_ProgramHalfWord(PageBase1, EEPROM_VALID_PAGE); - if (FlashStatus != FLASH_COMPLETE) - Status = FlashStatus; - else - Status = EE_CheckErasePage(PageBase0, EEPROM_ERASED); - } - break; - } - return Status; -} - -/** - * @brief Erases PAGE0 and PAGE1 and writes EEPROM_VALID_PAGE / 0 header to PAGE0 - * @param PAGE0 and PAGE1 base addresses - * @retval Status of the last operation (Flash write or erase) done during EEPROM formating - */ -uint16_t EEPROM_format(void) -{ - uint16_t status; - FLASH_Status FlashStatus; - FLASH_Unlock(); - - // Erase Page0 - status = EE_CheckErasePage(PageBase0, EEPROM_VALID_PAGE); - if (status != EEPROM_OK) - return status; - if ((*(__IO uint16_t*)PageBase0) == EEPROM_ERASED) - { - // Set Page0 as valid page: Write VALID_PAGE at Page0 base address - FlashStatus = FLASH_ProgramHalfWord(PageBase0, EEPROM_VALID_PAGE); - if (FlashStatus != FLASH_COMPLETE) - return FlashStatus; } - // Erase Page1 - return EE_CheckErasePage(PageBase1, EEPROM_ERASED); -} - -/** - * @brief Returns the erase counter for current page - * @param Data: Global variable contains the read variable value - * @retval Success or error status: - * - EEPROM_OK: if erases counter return. - * - EEPROM_NO_VALID_PAGE: if no valid page was found. - */ -uint16_t EEPROM_erases(uint16_t *Erases) -{ - uint32_t pageBase; - if (Status != EEPROM_OK) - if (EEPROM_init() != EEPROM_OK) - return Status; - - // Get active Page for read operation - pageBase = EE_FindValidPage(); - if (pageBase == 0) - return EEPROM_NO_VALID_PAGE; - - *Erases = (*(__IO uint16_t*)pageBase+2); - return EEPROM_OK; -} - -/** - * @brief Returns the last stored variable data, if found, - * which correspond to the passed virtual address - * @param Address: Variable virtual address - * @retval Data for variable or EEPROM_DEFAULT_DATA, if any errors - */ -/* -uint16_t EEPROM_read (uint16_t Address) -{ - uint16_t data; - EEPROM_read(Address, &data); - return data; -}*/ - -/** - * @brief Returns the last stored variable data, if found, - * which correspond to the passed virtual address - * @param Address: Variable virtual address - * @param Data: Pointer to data variable - * @retval Success or error status: - * - EEPROM_OK: if variable was found - * - EEPROM_BAD_ADDRESS: if the variable was not found - * - EEPROM_NO_VALID_PAGE: if no valid page was found. - */ -uint16_t EEPROM_read(uint16_t Address, uint16_t *Data) -{ - uint32_t pageBase, pageEnd; - - // Set default data (empty EEPROM) - *Data = EEPROM_DEFAULT_DATA; - - if (Status == EEPROM_NOT_INIT) - if (EEPROM_init() != EEPROM_OK) - return Status; - - // Get active Page for read operation - pageBase = EE_FindValidPage(); - if (pageBase == 0) - return EEPROM_NO_VALID_PAGE; - - // Get the valid Page end Address - pageEnd = pageBase + ((uint32_t)(PageSize - 2)); - - // Check each active page address starting from end - for (pageBase += 6; pageEnd >= pageBase; pageEnd -= 4) - if ((*(__IO uint16_t*)pageEnd) == Address) // Compare the read address with the virtual address - { - *Data = (*(__IO uint16_t*)(pageEnd - 2)); // Get content of Address-2 which is variable value - return EEPROM_OK; - } - - // Return ReadStatus value: (0: variable exist, 1: variable doesn't exist) - return EEPROM_BAD_ADDRESS; -} - -/** - * @brief Writes/upadtes variable data in EEPROM. - * @param VirtAddress: Variable virtual address - * @param Data: 16 bit data to be written - * @retval Success or error status: - * - FLASH_COMPLETE: on success - * - EEPROM_BAD_ADDRESS: if address = 0xFFFF - * - EEPROM_PAGE_FULL: if valid page is full - * - EEPROM_NO_VALID_PAGE: if no valid page was found - * - EEPROM_OUT_SIZE: if no empty EEPROM variables - * - Flash error code: on write Flash error - */ -uint16_t EEPROM_write(uint16_t Address, uint16_t Data) -{ - if (Status == EEPROM_NOT_INIT) - if (EEPROM_init() != EEPROM_OK) - return Status; - - if (Address == 0xFFFF) - return EEPROM_BAD_ADDRESS; - - // Write the variable virtual address and value in the EEPROM - uint16_t status = EE_VerifyPageFullWriteVariable(Address, Data); - return status; -} - -/** - * @brief Writes/upadtes variable data in EEPROM. - The value is written only if differs from the one already saved at the same address. - * @param VirtAddress: Variable virtual address - * @param Data: 16 bit data to be written - * @retval Success or error status: - * - EEPROM_SAME_VALUE: If new Data matches existing EEPROM Data - * - FLASH_COMPLETE: on success - * - EEPROM_BAD_ADDRESS: if address = 0xFFFF - * - EEPROM_PAGE_FULL: if valid page is full - * - EEPROM_NO_VALID_PAGE: if no valid page was found - * - EEPROM_OUT_SIZE: if no empty EEPROM variables - * - Flash error code: on write Flash error - */ -uint16_t EEPROM_update(uint16_t Address, uint16_t Data) -{ - uint16_t temp; - EEPROM_read(Address, &temp); - if (temp == Data) - return EEPROM_SAME_VALUE; - else - return EEPROM_write(Address, Data); + return FlashStatus; } +/***************************************************************************** +* Read once data byte from a specified address. +*******************************************************************************/ +uint8_t EEPROM_ReadDataByte (uint16_t Address) { -/** - * @brief Return number of variable - * @retval Number of variables - */ -uint16_t EEPROM_count(uint16_t *Count) -{ - if (Status == EEPROM_NOT_INIT) - if (EEPROM_init() != EEPROM_OK) - return Status; - - // Get valid Page for write operation - uint32_t pageBase = EE_FindValidPage(); - if (pageBase == 0) - return EEPROM_NO_VALID_PAGE; // No valid page, return max. numbers + uint8_t DataByte = 0xFF; - *Count = EE_GetVariablesCount(pageBase, 0xFFFF); - return EEPROM_OK; -} + // Get Byte from specified address + DataByte = (*(__IO uint8_t*)(FEE_PAGE_BASE_ADDRESS + FEE_ADDR_OFFSET(Address))); -uint16_t EEPROM_maxcount(void) -{ - return ((PageSize / 4)-1); + return DataByte; } - +/***************************************************************************** +* Wrap library in AVR style functions. +*******************************************************************************/ uint8_t eeprom_read_byte (const uint8_t *Address) { const uint16_t p = (const uint32_t) Address; - uint16_t temp; - EEPROM_read(p, &temp); - return (uint8_t) temp; + return EEPROM_ReadDataByte(p); } void eeprom_write_byte (uint8_t *Address, uint8_t Value) { uint16_t p = (uint32_t) Address; - EEPROM_write(p, (uint16_t) Value); + EEPROM_WriteDataByte(p, Value); } void eeprom_update_byte (uint8_t *Address, uint8_t Value) { uint16_t p = (uint32_t) Address; - EEPROM_update(p, (uint16_t) Value); + EEPROM_WriteDataByte(p, Value); } uint16_t eeprom_read_word (const uint16_t *Address) { const uint16_t p = (const uint32_t) Address; - uint16_t temp; - EEPROM_read(p, &temp); - return temp; + return EEPROM_ReadDataByte(p) | (EEPROM_ReadDataByte(p+1) << 8); } void eeprom_write_word (uint16_t *Address, uint16_t Value) { uint16_t p = (uint32_t) Address; - EEPROM_write(p, Value); + EEPROM_WriteDataByte(p, (uint8_t) Value); + EEPROM_WriteDataByte(p + 1, (uint8_t) (Value >> 8)); } void eeprom_update_word (uint16_t *Address, uint16_t Value) { uint16_t p = (uint32_t) Address; - EEPROM_update(p, Value); + EEPROM_WriteDataByte(p, (uint8_t) Value); + EEPROM_WriteDataByte(p + 1, (uint8_t) (Value >> 8)); } uint32_t eeprom_read_dword (const uint32_t *Address) { const uint16_t p = (const uint32_t) Address; - uint16_t temp1, temp2; - EEPROM_read(p, &temp1); - EEPROM_read(p + 1, &temp2); - return temp1 | (temp2 << 16); + return EEPROM_ReadDataByte(p) | (EEPROM_ReadDataByte(p+1) << 8) + | (EEPROM_ReadDataByte(p+2) << 16) | (EEPROM_ReadDataByte(p+3) << 24); } void eeprom_write_dword (uint32_t *Address, uint32_t Value) { - uint16_t temp = (uint16_t) Value; - uint16_t p = (uint32_t) Address; - EEPROM_write(p, temp); - temp = (uint16_t) (Value >> 16); - EEPROM_write(p + 1, temp); + uint16_t p = (const uint32_t) Address; + EEPROM_WriteDataByte(p, (uint8_t) Value); + EEPROM_WriteDataByte(p+1, (uint8_t) (Value >> 8)); + EEPROM_WriteDataByte(p+2, (uint8_t) (Value >> 16)); + EEPROM_WriteDataByte(p+3, (uint8_t) (Value >> 24)); } void eeprom_update_dword (uint32_t *Address, uint32_t Value) { - uint16_t temp = (uint16_t) Value; - uint16_t p = (uint32_t) Address; - EEPROM_update(p, temp); - temp = (uint16_t) (Value >> 16); - EEPROM_update(p + 1, temp); + uint16_t p = (const uint32_t) Address; + EEPROM_WriteDataByte(p, (uint8_t) Value); + EEPROM_WriteDataByte(p+1, (uint8_t) (Value >> 8)); + EEPROM_WriteDataByte(p+2, (uint8_t) (Value >> 16)); + EEPROM_WriteDataByte(p+3, (uint8_t) (Value >> 24)); +} + +void eeprom_read_block(void *buf, const void *addr, uint32_t len) { + const uint8_t *p = (const uint8_t *)addr; + uint8_t *dest = (uint8_t *)buf; + while (len--) { + *dest++ = eeprom_read_byte(p++); + } +} + +void eeprom_write_block(const void *buf, void *addr, uint32_t len) { + uint8_t *p = (uint8_t *)addr; + const uint8_t *src = (const uint8_t *)buf; + while (len--) { + eeprom_write_byte(p++, *src++); + } +} + +void eeprom_update_block(const void *buf, void *addr, uint32_t len) { + uint8_t *p = (uint8_t *)addr; + const uint8_t *src = (const uint8_t *)buf; + while (len--) { + eeprom_write_byte(p++, *src++); + } } -- cgit v1.2.3-24-g4f1b