bms/Application/app/nv_storage.c

#include "nv_storage.h"
#include "bsp/AT24CXX.h"
#include "app/sox/soc.h"
#include "libs/logger.h"
#include "libs/shark_utils.h"


#define SOC_ADDR 0

void nv_save_soc(void){
	soc_t *soc = get_soc();
	
	uint16_t crc16 = shark_crc16_update(0, (const u8 *)soc, sizeof(soc_t));
	u64 start_time = shark_get_mseconds();
	AT24CXX_Write(SOC_ADDR ,(uint8_t *)soc, sizeof(soc_t));
	AT24CXX_Write(SOC_ADDR + sizeof(soc_t),(uint8_t *)&crc16, sizeof(crc16));
	printf("write e2rom time %lld\n", (shark_get_mseconds() - start_time));
}

void nv_erase(void){
	uint8_t data = 0xFF;
	for (int i = 0; i < sizeof(soc_t) + sizeof(uint16_t); i++){
		AT24CXX_Write(SOC_ADDR + i, &data, 1);
	}
}

int nv_restore_soc(void){
	soc_t soc;
	AT24CXX_Read(SOC_ADDR , (uint8_t *)&soc, sizeof(soc_t));
	uint16_t crc16 = shark_crc16_update(0, (const u8 *)&soc, sizeof(soc_t));
	uint16_t crc_nv;
	AT24CXX_Read(SOC_ADDR + sizeof(soc_t), (uint8_t *)&crc_nv, sizeof(crc_nv));
	if (crc_nv != crc16) {
		return -1;
	}

	*get_soc() = soc;

	return 0;
}