annotate Small_CPU/Src/tm_stm32f4_otp.c @ 426:514e6269256f ImprovmentNVM_2

Added function to analyse the sampel ringbuffer: The function will show 0 for used sectors, 4 for the sector currently in use and 5 for empty sectors. This allows identification of log sample index position and identification of a buffer corruption (more than 2 sectors have state 4) The repair function writes dummy bytes to the end of the active buffer with the lower sector number. This decision is based on the fact that corruption results typically in a reset of index to buffer start address. After repair the writing will be continued using the hugher buffer marked as used.
author ideenmodellierer
date Sat, 15 Feb 2020 20:50:58 +0100
parents 5f11787b4f42
children
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38
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1 /**
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2 * |----------------------------------------------------------------------
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3 * | Copyright (C) Tilen Majerle, 2014
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4 * |
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5 * | This program is free software: you can redistribute it and/or modify
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6 * | it under the terms of the GNU General Public License as published by
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7 * | the Free Software Foundation, either version 3 of the License, or
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8 * | any later version.
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9 * |
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10 * | This program is distributed in the hope that it will be useful,
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11 * | but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 * | GNU General Public License for more details.
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14 * |
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15 * | You should have received a copy of the GNU General Public License
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16 * | along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 * |----------------------------------------------------------------------
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18 */
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19 #include "tm_stm32f4_otp.h"
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20
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21 HAL_StatusTypeDef TM_OTP_Write(uint8_t block, uint8_t byte, uint8_t data)
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22 {
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23 HAL_StatusTypeDef answer;
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24
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25 /* Check input parameters */
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26 if (
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27 block >= OTP_BLOCKS ||
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28 byte >= OTP_BYTES_IN_BLOCK
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29 ) {
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30 /* Invalid parameters */
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31 return HAL_ERROR;
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32 }
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33
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34 if(*(uint8_t *)(OTP_START_ADDR + block * OTP_BYTES_IN_BLOCK + byte) != 0xFF)
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35 return HAL_ERROR;
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36
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37 /* Unlock FLASH */
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38 HAL_FLASH_Unlock();
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39
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40 answer = HAL_FLASH_Program(FLASH_TYPEPROGRAM_BYTE, (OTP_START_ADDR + block * OTP_BYTES_IN_BLOCK + byte), data);
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41
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42 /* Lock FLASH */
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43 HAL_FLASH_Lock();
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44
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45 return answer;
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46 }
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47
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48
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49 uint8_t TM_OTP_Read(uint8_t block, uint8_t byte) {
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50 uint8_t data;
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51
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52 /* Check input parameters */
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53 if (
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54 block >= OTP_BLOCKS ||
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55 byte >= OTP_BYTES_IN_BLOCK
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56 ) {
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57 /* Invalid parameters */
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58 return HAL_ERROR;
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59 }
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60
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61 /* Get value */
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62 data = *(__IO uint8_t *)(OTP_START_ADDR + block * OTP_BYTES_IN_BLOCK + byte);
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63
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64 /* Return data */
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65 return data;
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66 }