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Start documentation for safety RAM. Will be implemented afterwards

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Mario Hüttel
2020-09-04 22:55:34 +02:00
parent a12648ff7a
commit cb3b42aece
7 changed files with 215 additions and 1 deletions
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52
stm-firmware/include/reflow-controller/safety/backup-memory.h Normal file
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/* Reflow Oven Controller
*
* Copyright (C) 2020 Mario Hüttel <mario.huettel@gmx.net>
*
* This file is part of the Reflow Oven Controller Project.
*
* The reflow oven controller is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The Reflow Oven Control Firmware 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 the reflow oven controller project.
* If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __SAFETY_MEMORY_H__
#define __SAFETY_MEMORY_H__
/**
* @brief Magic number to signal a valid safety memory header.
*/
#define SAFETY_MEMORY_MAGIC 0x12AA5CB7
/**
* @brief Offset address for the safety_memory_header.
* @note Any other value than 0UL doesn't really make sense. Therfore, this should not be changed.
*/
#define SAFETY_MEMORY_HEADER_ADDRESS 0UL
/**
* @brief Safety memory header
*/
struct safety_memory_header {
uint32_t magic; /**< @brief Magic. Set to SAFETY_MEMORY_MAGIC */
uint32_t boot_status_offset; /**< Offset of the safety_memory_boot_status struct (in 32 bit words)*/
uint32_t err_memory_offset; /**< Offset of the error memory */
uint32_t err_memory_end; /**< End of the error memory. This points to the word after the error memory, containing the CRC of the whole backup RAM. */
uint32_t magic_i; /**< @brief Invers Magic. Set to ~SAFETY_MEMORY_MAGIC */
};
struct safety_memory_boot_status {
uint32_t reboot_to_bootloader;
uint32_t code_updated;
}
#endif /* __SAFETY_MEMORY_H__ */

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stm-firmware/include/reflow-controller/safety/safety-memory.h Normal file
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/* Reflow Oven Controller
*
* Copyright (C) 2020 Mario Hüttel <mario.huettel@gmx.net>
*
* This file is part of the Reflow Oven Controller Project.
*
* The reflow oven controller is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The Reflow Oven Control Firmware 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 the reflow oven controller project.
* If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __WATCHDOG_H__
#define __WATCHDOG_H__
#include <reflow-controller/safety/safety-config.h>
#include <stdint.h>
#include <stdbool.h>
/**
* @brief Setup the watchdog for the safety controller
* @param Prescaler to use for the 32 KHz LSI clock
* @return 0 if successful
* @note Once the watchdog is enabled, it cannot be turned off!
*/
int watchdog_setup(uint8_t prescaler);
/**
* @brief Reset watchdog counter
* @param magic Magic value to prevent this fuinction from being called randomly
* @return 0 if successful
*/
int watchdog_ack(uint32_t magic);
/**
* @brief Check if reset was generated by the watchdog.
* @note This also clears the relevant flag, so the function will reutrn false when called a second time
* @return
*/
bool watchdog_check_reset_source(void);
#endif /* __WATCHDOG_H__ */