Rev 56 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 56 | Rev 64 | ||
|---|---|---|---|
| Line 8... | Line 8... | ||
| 8 | /* Includes ------------------------------------------------------------------*/ |
8 | /* Includes ------------------------------------------------------------------*/ |
| 9 | #include "stm32l1xx_hal.h" |
9 | #include "stm32l1xx_hal.h" |
| 10 | 10 | ||
| 11 | #include "nvram.h" |
11 | #include "nvram.h" |
| 12 | 12 | ||
| - | 13 | nvram_info_t NVRAM_Base[NVRAM_WORDS] __attribute__((section(".NVRAM_Data"))); // set by linker |
|
| - | 14 | ||
| 13 | void |
15 | static void |
| 14 | WriteUint16NVRAM (uint32_t Address, uint16_t data) |
16 | WriteNVRAM(nvram_info_t *Address, nvram_info_t data) |
| 15 | { |
17 | { |
| 16 | HAL_FLASHEx_DATAEEPROM_Unlock (); |
18 | HAL_FLASHEx_DATAEEPROM_Unlock(); |
| 17 | HAL_FLASHEx_DATAEEPROM_Erase (FLASH_TYPEERASEDATA_HALFWORD, Address); |
19 | HAL_FLASHEx_DATAEEPROM_Program(FLASH_TYPEPROGRAMDATA_WORD, (uint32_t)Address, data.u32); |
| 18 | HAL_FLASHEx_DATAEEPROM_Program (FLASH_TYPEPROGRAMDATA_HALFWORD, Address, |
20 | HAL_FLASHEx_DATAEEPROM_Lock(); |
| - | 21 | } |
|
| - | 22 | ||
| 19 | data); |
23 | static void |
| - | 24 | EraseNVRAM(nvram_info_t *Address) |
|
| - | 25 | { |
|
| - | 26 | HAL_FLASHEx_DATAEEPROM_Unlock(); |
|
| - | 27 | HAL_FLASHEx_DATAEEPROM_Erase(FLASH_TYPEERASEDATA_WORD, (uint32_t)Address); |
|
| 20 | HAL_FLASHEx_DATAEEPROM_Lock (); |
28 | HAL_FLASHEx_DATAEEPROM_Lock(); |
| - | 29 | } |
|
| - | 30 | ||
| - | 31 | void write_nvram_data(nvram_info_t data) |
|
| - | 32 | { |
|
| - | 33 | ||
| - | 34 | /* search blank */ |
|
| - | 35 | for (int ptr = 0; ptr < NVRAM_WORDS; ptr++) |
|
| - | 36 | { |
|
| - | 37 | ||
| - | 38 | // erase the entry just found |
|
| - | 39 | if (NVRAM_Base[ptr].data.tag == data.data.tag) |
|
| - | 40 | { |
|
| - | 41 | nvram_info_t dat; |
|
| - | 42 | dat.u32 = ~0; |
|
| - | 43 | // erase previous data, leave as 0xFF |
|
| - | 44 | WriteNVRAM(&NVRAM_Base[ptr], dat); |
|
| - | 45 | // search forward for next erased or empty element, use it |
|
| - | 46 | for (int offset = 1; offset < NVRAM_WORDS+1; offset++) |
|
| - | 47 | { |
|
| - | 48 | int index = (ptr + offset) % NVRAM_WORDS; |
|
| - | 49 | if (NVRAM_Base[index].u32 == ~0 || NVRAM_Base[index].u32 == 0) |
|
| - | 50 | { |
|
| - | 51 | if (NVRAM_Base[index].u32 != 0) |
|
| - | 52 | EraseNVRAM(&NVRAM_Base[ptr]); |
|
| - | 53 | WriteNVRAM(&NVRAM_Base[ptr], data); |
|
| - | 54 | return; |
|
| - | 55 | } |
|
| - | 56 | } |
|
| - | 57 | } |
|
| - | 58 | } |
|
| 21 | } |
59 | } |
| 22 | 60 | ||
| 23 | void |
- | |
| 24 | WriteUint32NVRAM (uint32_t Address, uint32_t data) |
61 | nvram_info_t *find_nvram_data(uint8_t searchTag) |
| 25 | { |
62 | { |
| 26 | HAL_FLASHEx_DATAEEPROM_Unlock (); |
63 | for (int ptr = 0; ptr < NVRAM_WORDS; ptr++) |
| - | 64 | { |
|
| 27 | HAL_FLASHEx_DATAEEPROM_Erase (FLASH_TYPEERASEDATA_WORD, Address); |
65 | if (NVRAM_Base[ptr].data.tag == searchTag) |
| 28 | HAL_FLASHEx_DATAEEPROM_Program (FLASH_TYPEPROGRAMDATA_WORD, Address, data); |
66 | return &NVRAM_Base[ptr]; |
| - | 67 | } |
|
| 29 | HAL_FLASHEx_DATAEEPROM_Lock (); |
68 | return NULL; |
| 30 | } |
69 | } |