small_water_meter_4g_src/Middlewares/Common/prj_com.h

#ifndef __PRJ_COM_H__
#define __PRJ_COM_H__

#ifdef __cplusplus
extern "C" {
#endif

#include "stdint.h"

/**
 * Get x sign bit only for little-endian
 * if x >= 0 then   0(false)
 * if x <  0 then  -1(true)
 */
#define IsNegative(x) ((sizeof(x)==4) ? *((int32_t *)&x)>>31 : \
                       (sizeof(x)==2) ? *((int16_t *)&x)>>15 : \
                                        *((int8_t  *)&x)>>7)
#define IsPositive(x) (~IsNegative(x))

#define BcdToOct(bcd)         (((bcd) & 0x0f) + ((bcd) >> 4) * 10)
#define OctToBcd(bcd)         (((bcd / 10) <<4 ) + ((bcd) % 10))

#define SET_BIT_WARN(data, bit)     do{ (data) |= 1<<(bit); }while(0)
#define RESET_BIT_WARN(data, bit)   do{ (data) &= (~(1<<(bit))); }while(0)
#define BIT_VAL(data, bit)    (((data) & (1 << bit)) > 0 ? 1 : 0) 

typedef struct {
    uint16_t year;
    uint16_t month;
    uint16_t day;
    uint32_t hour;
    uint32_t min;
    uint32_t sec;
}tm_t;

extern void HexToStr(uint32_t Hex, char *Str, int16_t Len);
extern int str2int(char *str, uint32_t *n);
extern int str2float(char *str, float *f);
extern void int2str(int n, char *str);
extern void HexBufToStr(char *dest, unsigned char *src, int len);
extern void StrToHexBuf(char *dest, char *src, int len);
extern void num2str(char *str, float value, uint8_t g, uint8_t l);

extern void ToggleEndian(uint8_t *src, uint8_t *dst, uint16_t width, uint16_t num);

extern uint32_t com_crc32L_next(uint32_t crc_cur, uint8_t *data, uint32_t len, uint32_t pattern);
extern uint16_t com_crc16L_next(uint16_t crc_cur, uint8_t *data, uint32_t len, uint16_t pattern);

extern uint32_t com_crc32H_next(uint32_t crc_cur, uint8_t *data, uint32_t len, uint32_t pattern);
extern uint16_t com_crc16H_next(uint16_t crc_cur, uint8_t *data, uint32_t len, uint16_t pattern);

extern uint32_t strnchar(const char *src, char ch, int index);
extern uint32_t strcntchar(const char *src, char ch);

extern uint8_t is_leap(uint16_t year);
extern uint8_t last_day_of_month(uint8_t year, uint8_t month);
extern uint32_t days_from_leap_year_begin(uint8_t month, uint8_t day);
extern uint32_t next_day(uint32_t date);
extern uint32_t next_month(uint32_t date);
extern uint32_t prev_month(uint32_t date);
extern uint32_t prev_day(uint32_t date);

extern void time_add_secs(tm_t *dest, tm_t *src, uint32_t secs);
extern void time_sub_secs(tm_t *dest, tm_t *src, uint32_t secs);
extern uint8_t check_sum(volatile uint8_t *data, uint16_t len);
extern uint16_t check_sum_2_byte(volatile uint8_t *data, uint16_t len);//add by yuewei 20260304
extern uint16_t crc16_modbus(volatile uint8_t *data, uint16_t length);//add by yuewei 20260317
#ifdef __cplusplus
}
#endif

#endif