view Small_CPU/Src/tm_stm32f4_otp.c @ 407:b11e50415982 Improment_NVM

Bugfix parallel call of external flash functions: read / write calls to external flash were performed from main loop as well as from timer callback. As result the update of devicedata (every10 minutes) could colidate with the writing of log samples during dive (if logging takes longer then 100ms (clear page). To avoid this raise condition logging of devicedata has been moved to background loop
author ideenmodellierer
date Sun, 12 Jan 2020 18:06:59 +0100
parents 5f11787b4f42
children
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/**	
 * |----------------------------------------------------------------------
 * | Copyright (C) Tilen Majerle, 2014
 * | 
 * | This program is free software: you can redistribute it and/or modify
 * | it under the terms of the GNU General Public License as published by
 * | the Free Software Foundation, either version 3 of the License, or
 * | any later version.
 * |  
 * | This program is distributed in the hope that it will be useful,
 * | but WITHOUT ANY WARRANTY; without even the implied warranty of
 * | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * | GNU General Public License for more details.
 * | 
 * | You should have received a copy of the GNU General Public License
 * | along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * |----------------------------------------------------------------------
 */
#include "tm_stm32f4_otp.h"

HAL_StatusTypeDef TM_OTP_Write(uint8_t block, uint8_t byte, uint8_t data)
{
	HAL_StatusTypeDef answer;

	/* Check input parameters */
	if (
		block >= OTP_BLOCKS ||
		byte >= OTP_BYTES_IN_BLOCK
	) {
		/* Invalid parameters */
		return HAL_ERROR;
	}

	if(*(uint8_t *)(OTP_START_ADDR + block * OTP_BYTES_IN_BLOCK + byte) != 0xFF)
		return HAL_ERROR;	

	/* Unlock FLASH */
	HAL_FLASH_Unlock();

	answer = HAL_FLASH_Program(FLASH_TYPEPROGRAM_BYTE, (OTP_START_ADDR + block * OTP_BYTES_IN_BLOCK + byte), data);

	/* Lock FLASH */
	HAL_FLASH_Lock();

	return answer;
}


uint8_t TM_OTP_Read(uint8_t block, uint8_t byte) {
	uint8_t data;
	
	/* Check input parameters */
	if (
		block >= OTP_BLOCKS ||
		byte >= OTP_BYTES_IN_BLOCK
	) {
		/* Invalid parameters */
		return HAL_ERROR;
	}
	
	/* Get value */
	data = *(__IO uint8_t *)(OTP_START_ADDR + block * OTP_BYTES_IN_BLOCK + byte);
	
	/* Return data */
	return data;
}