annotate Small_CPU/Src/tm_stm32f4_otp.c @ 771:29d9b5bc7946

Revised automatic setpoint change. The proposed approach is essentially the approach used by most controllers of eCCR ('upshift' on descent, 'downshift' on ascent), so that the OSTC4 when used as a backup computer for eCCR will make the changes at the same time as the eCCR itself.
author heinrichsweikamp
date Fri, 21 Apr 2023 09:48:23 +0200 (20 months ago)
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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 }