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comparison Small_CPU/Src/tm_stm32f4_otp.c @ 38:5f11787b4f42

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include in ostc4 repository
author heinrichsweikamp
date Sat, 28 Apr 2018 11:52:34 +0200
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37:ccc45c0e1ea2 38:5f11787b4f42
1 /**
2 * |----------------------------------------------------------------------
3 * | Copyright (C) Tilen Majerle, 2014
4 * |
5 * | This program is free software: you can redistribute it and/or modify
6 * | it under the terms of the GNU General Public License as published by
7 * | the Free Software Foundation, either version 3 of the License, or
8 * | any later version.
9 * |
10 * | This program is distributed in the hope that it will be useful,
11 * | but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * | GNU General Public License for more details.
14 * |
15 * | You should have received a copy of the GNU General Public License
16 * | along with this program. If not, see <http://www.gnu.org/licenses/>.
17 * |----------------------------------------------------------------------
18 */
19 #include "tm_stm32f4_otp.h"
20
21 HAL_StatusTypeDef TM_OTP_Write(uint8_t block, uint8_t byte, uint8_t data)
22 {
23 HAL_StatusTypeDef answer;
24
25 /* Check input parameters */
26 if (
27 block >= OTP_BLOCKS ||
28 byte >= OTP_BYTES_IN_BLOCK
29 ) {
30 /* Invalid parameters */
31 return HAL_ERROR;
32 }
33
34 if(*(uint8_t *)(OTP_START_ADDR + block * OTP_BYTES_IN_BLOCK + byte) != 0xFF)
35 return HAL_ERROR;
36
37 /* Unlock FLASH */
38 HAL_FLASH_Unlock();
39
40 answer = HAL_FLASH_Program(FLASH_TYPEPROGRAM_BYTE, (OTP_START_ADDR + block * OTP_BYTES_IN_BLOCK + byte), data);
41
42 /* Lock FLASH */
43 HAL_FLASH_Lock();
44
45 return answer;
46 }
47
48
49 uint8_t TM_OTP_Read(uint8_t block, uint8_t byte) {
50 uint8_t data;
51
52 /* Check input parameters */
53 if (
54 block >= OTP_BLOCKS ||
55 byte >= OTP_BYTES_IN_BLOCK
56 ) {
57 /* Invalid parameters */
58 return HAL_ERROR;
59 }
60
61 /* Get value */
62 data = *(__IO uint8_t *)(OTP_START_ADDR + block * OTP_BYTES_IN_BLOCK + byte);
63
64 /* Return data */
65 return data;
66 }