373 lines
10 KiB
C
373 lines
10 KiB
C
#include "bsp_DS1302.h"
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#define bsp_DS1302_DELAY() do{ \
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__NOP();__NOP();__NOP();__NOP();\
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__NOP();__NOP();__NOP();__NOP();\
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__NOP();__NOP();__NOP();__NOP();\
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__NOP();__NOP();__NOP();__NOP();\
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__NOP();__NOP();__NOP();__NOP();\
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__NOP();__NOP();__NOP();__NOP();\
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__NOP();__NOP();__NOP();__NOP();\
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}while(0)
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#define RST_CLR HAL_GPIO_WritePin(DS1302_RST_GPIO_Port, DS1302_RST_Pin, GPIO_PIN_RESET )
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#define RST_SET HAL_GPIO_WritePin(DS1302_RST_GPIO_Port, DS1302_RST_Pin, GPIO_PIN_SET )
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#define IO_CLR HAL_GPIO_WritePin(DS1302_DIO_GPIO_Port, DS1302_DIO_Pin, GPIO_PIN_RESET )
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#define IO_SET HAL_GPIO_WritePin(DS1302_DIO_GPIO_Port, DS1302_DIO_Pin, GPIO_PIN_SET )
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#define IO_READ HAL_GPIO_ReadPin (DS1302_DIO_GPIO_Port, DS1302_DIO_Pin )
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#define SCK_CLR HAL_GPIO_WritePin(DS1302_CLK_GPIO_Port, DS1302_CLK_Pin, GPIO_PIN_RESET )
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#define SCK_SET HAL_GPIO_WritePin(DS1302_CLK_GPIO_Port, DS1302_CLK_Pin, GPIO_PIN_SET )
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static u32 g_time_sec_base = 0; // 绝对秒数基准（从 2000-01-01 起）
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static u32 g_time_tick_base = 0; // 对应的 HAL Tick 值（毫秒）
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static void bsp_DS1302Init(void);
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static void bsp_DS1302_Task(void);
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static u8 bsp_DS1302_Set(bsp_DS1302_Time_t *pTime);
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static void bsp_DS1302DataInput(void);
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static void bsp_DS1302DataOutput(void);
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static void bsp_DS1302_write_byte(u8 Addr, u8 Data);
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static u8 bsp_DS1302_read_byte(u8 Addr);
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static u8 HexToBCD(u8 code);
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static u8 is_leap_year(u16 year);
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static void bsp_DS1302_UpdateBase(void);
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static void bsp_DS1302_GetTimeWithMs(char *buf, u16 len);
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static u32 bsp_DS1302_GetCurrentSeconds(void);
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static u8 bsp_DS1302_SetTimeWithMs(u16 year, u8 month, u8 day,
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u8 hour, u8 minute, u8 second, u32 ms);
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static u32 datetime_to_seconds(u16 year, u8 month, u8 day,
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u8 hour, u8 minute, u8 second);
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static void seconds_to_datetime(u32 seconds, u16 *year, u8 *month, u8 *day,
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u8 *hour, u8 *minute, u8 *second);
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bsp_DS1302_t DS1302 =
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{
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.Init = bsp_DS1302Init,
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.Task = bsp_DS1302_Task,
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.Set = bsp_DS1302_Set,
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.UpdateBase = bsp_DS1302_UpdateBase,
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.GetTimeWithMs = bsp_DS1302_GetTimeWithMs,
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.GetCurrentSeconds = bsp_DS1302_GetCurrentSeconds,
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.SetTimeWithMs = bsp_DS1302_SetTimeWithMs,
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};
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bsp_DS1302_t *pDS1302 = &DS1302;
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static void bsp_DS1302DataInput(void)
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{
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GPIO_InitTypeDef GPIO_InitStruct; //定义GPIO结构体
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GPIO_InitStruct.Pin = DS1302_DIO_Pin;
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(DS1302_DIO_GPIO_Port, &GPIO_InitStruct);
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}
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static void bsp_DS1302DataOutput(void)
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{
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GPIO_InitTypeDef GPIO_InitStruct; //定义GPIO结构体
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GPIO_InitStruct.Pin = DS1302_DIO_Pin;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(DS1302_DIO_GPIO_Port, &GPIO_InitStruct);
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}
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/*向bsp_DS1302写入一字节数据*/
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static void bsp_DS1302_write_byte(u8 Addr, u8 Data)
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{
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u8 i;
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RST_SET; /*启动bsp_DS1302总线*/
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bsp_DS1302_DELAY();
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/*写入目标地址：addr*/
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Addr = Addr & 0xFE;/*最低位置零*/
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for (i = 0; i < 8; i++)
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{
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if (Addr & 0x01)
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{
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IO_SET;
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}
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else
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{
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IO_CLR;
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}
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bsp_DS1302_DELAY();
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SCK_SET;
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bsp_DS1302_DELAY();
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SCK_CLR;
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bsp_DS1302_DELAY();
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Addr = Addr >> 1;
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}
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/*写入数据：d*/
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for (i = 0; i < 8; i++)
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{
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if (Data & 0x01)
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{
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IO_SET;
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}
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else
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{
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IO_CLR;
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}
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bsp_DS1302_DELAY();
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SCK_SET;
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bsp_DS1302_DELAY();
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SCK_CLR;
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bsp_DS1302_DELAY();
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Data = Data >> 1;
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}
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RST_CLR; /*停止bsp_DS1302总线*/
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bsp_DS1302_DELAY();
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}
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/*从bsp_DS1302读出一字节数据*/
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static u8 bsp_DS1302_read_byte(u8 Addr)
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{
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u8 i;
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u8 temp;
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RST_SET; /*启动bsp_DS1302总线*/
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bsp_DS1302_DELAY();
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/*写入目标地址：addr*/
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Addr = Addr | 0x01;/*最低位置高*/
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for (i = 0; i < 8; i++)
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{
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if (Addr & 0x01)
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{
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IO_SET;
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}
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else
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{
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IO_CLR;
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}
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bsp_DS1302_DELAY();
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SCK_SET;
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bsp_DS1302_DELAY();
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SCK_CLR;
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bsp_DS1302_DELAY();
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Addr = Addr >> 1;
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}
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bsp_DS1302DataInput();
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/*输出数据：temp*/
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for (i = 0; i < 8; i++)
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{
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temp = temp >> 1;
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if (IO_READ)
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{
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temp |= 0x80;
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}
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else
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{
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temp &= 0x7F;
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}
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bsp_DS1302_DELAY();
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SCK_SET;
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bsp_DS1302_DELAY();
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SCK_CLR;
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bsp_DS1302_DELAY();
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}
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RST_CLR; /*停止bsp_DS1302总线*/
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bsp_DS1302_DELAY();
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bsp_DS1302DataOutput();
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return temp;
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}
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static u8 HexToBCD(u8 code)
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{
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u8 temp;
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temp = ((code / 10) << 4) + (code % 10);
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return temp;
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}
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// ---------- 时间计算辅助函数 ----------
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static u8 is_leap_year(u16 year)
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{
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return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
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}
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static u32 datetime_to_seconds(u16 year, u8 month, u8 day,
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u8 hour, u8 minute, u8 second)
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{
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const u8 month_days[12] = {31,28,31,30,31,30,31,31,30,31,30,31};
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u32 days = 0;
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for (u16 y = 2000; y < year; y++) {
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days += 365 + is_leap_year(y);
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}
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for (u8 m = 1; m < month; m++) {
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days += month_days[m-1];
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if (m == 2 && is_leap_year(year)) days++;
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}
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days += (day - 1);
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return days * 86400UL + hour * 3600UL + minute * 60UL + second;
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}
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static void seconds_to_datetime(u32 seconds, u16 *year, u8 *month, u8 *day,
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u8 *hour, u8 *minute, u8 *second)
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{
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u32 days = seconds / 86400;
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u32 secs_rem = seconds % 86400;
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u16 y = 2000;
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while (1) {
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u16 days_in_year = 365 + is_leap_year(y);
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if (days < days_in_year) break;
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days -= days_in_year;
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y++;
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}
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*year = y;
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u8 month_days[12] = {31,28,31,30,31,30,31,31,30,31,30,31};
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if (is_leap_year(y)) month_days[1] = 29;
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u8 m;
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for (m = 1; m <= 12; m++) {
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if (days < month_days[m-1]) break;
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days -= month_days[m-1];
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}
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*month = m;
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*day = days + 1;
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*hour = secs_rem / 3600;
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*minute = (secs_rem % 3600) / 60;
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*second = secs_rem % 60;
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}
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// ---------- 新增毫秒级扩展功能实现 ----------
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static void bsp_DS1302_UpdateBase(void)
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{
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u16 year = 2000 + DS1302.Time.Year;
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g_time_sec_base = datetime_to_seconds(year, DS1302.Time.Month, DS1302.Time.Day,
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DS1302.Time.Hour, DS1302.Time.Minute, DS1302.Time.Second);
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g_time_tick_base = HAL_GetTick();
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}
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static void bsp_DS1302_GetTimeWithMs(char *buf, u16 len)
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{
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if (!buf || len < 17) return;
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u32 tick_diff = HAL_GetTick() - g_time_tick_base; // 自动处理回绕
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u32 total_sec = g_time_sec_base + tick_diff / 1000;
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u32 ms = tick_diff % 1000;
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u16 year; u8 month, day, hour, minute, second;
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seconds_to_datetime(total_sec, &year, &month, &day, &hour, &minute, &second);
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u8 ms_two_digits = ms / 10;
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snprintf(buf, len, "%04d%02d%02d%02d%02d%02d%02d",
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year, month, day, hour, minute, second, ms_two_digits);
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}
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static u32 bsp_DS1302_GetCurrentSeconds(void)
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{
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u32 tick_diff = HAL_GetTick() - g_time_tick_base;
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return g_time_sec_base + tick_diff / 1000;
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}
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static u8 bsp_DS1302_SetTimeWithMs(u16 year, u8 month, u8 day,
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u8 hour, u8 minute, u8 second, u32 ms)
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{
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if (year < 2000 || year > 2099 || month < 1 || month > 12 ||
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day < 1 || day > 31 || hour > 23 || minute > 59 || second > 59 || ms > 99) {
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return 0;
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}
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bsp_DS1302_Time_t time;
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time.Year = year - 2000;
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time.Month = month;
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time.Day = day;
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time.Hour = hour;
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time.Minute = minute;
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time.Second = second;
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if (bsp_DS1302_Set(&time) != 1) {
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return 0;
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}
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// 校准基准
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u32 actual_ms = ms * 10;
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g_time_sec_base = datetime_to_seconds(year, month, day, hour, minute, second);
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g_time_tick_base = HAL_GetTick() - actual_ms;
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return 1;
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}
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static u8 bsp_DS1302_Set(bsp_DS1302_Time_t *pTime)
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{
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if ((pTime->Year > 99) || (pTime->Month > 12) || (pTime->Day > 31) ||
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(pTime->Hour > 23) || (pTime->Minute > 59) || (pTime->Second > 59))
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{
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return USR_FALSE;
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}
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else
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{
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bsp_DS1302_write_byte(BSP_DS1302_CONTROL_ADDR, 0x00); //关闭写保护
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bsp_DS1302_write_byte(BSP_DS1302_SEC_ADDR, 0x80); //暂停
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bsp_DS1302_write_byte(BSP_DS1302_YEAR_ADDR, HexToBCD(pTime->Year));
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bsp_DS1302_write_byte(BSP_DS1302_MONTH_ADDR, HexToBCD(pTime->Month));
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bsp_DS1302_write_byte(BSP_DS1302_DATA_ADDR, HexToBCD(pTime->Day));
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bsp_DS1302_write_byte(BSP_DS1302_HOUR_ADDR, HexToBCD(pTime->Hour));
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bsp_DS1302_write_byte(BSP_DS1302_MIN_ADDR, HexToBCD(pTime->Minute));
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bsp_DS1302_write_byte(BSP_DS1302_SEC_ADDR, HexToBCD(pTime->Second));
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bsp_DS1302_write_byte(BSP_DS1302_CONTROL_ADDR, 0x80); //打开写保护
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return USR_TRUE;
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}
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}
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static void bsp_DS1302_Task(void)
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{
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u8 RegData;
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RegData = bsp_DS1302_read_byte(BSP_DS1302_YEAR_ADDR);
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pDS1302->Time.Year = (RegData / 16) * 10 + RegData % 16;
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RegData = bsp_DS1302_read_byte(BSP_DS1302_MONTH_ADDR);
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pDS1302->Time.Month = (RegData / 16) * 10 + RegData % 16;
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RegData = bsp_DS1302_read_byte(BSP_DS1302_DATA_ADDR);
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pDS1302->Time.Day = (RegData / 16) * 10 + RegData % 16;
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RegData = bsp_DS1302_read_byte(BSP_DS1302_HOUR_ADDR);
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pDS1302->Time.Hour = (RegData / 16) * 10 + RegData % 16;
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RegData = bsp_DS1302_read_byte(BSP_DS1302_MIN_ADDR);
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pDS1302->Time.Minute = (RegData / 16) * 10 + RegData % 16;
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RegData = bsp_DS1302_read_byte(BSP_DS1302_SEC_ADDR);
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pDS1302->Time.Second = (RegData / 16) * 10 + RegData % 16;
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}
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static void bsp_DS1302Init(void)
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{
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RST_SET;
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SCK_CLR;
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bsp_DS1302_Task();
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if ((pDS1302->Time.Year > 99) || (pDS1302->Time.Month > 12) || (pDS1302->Time.Day > 31) ||
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(pDS1302->Time.Hour > 23) || (pDS1302->Time.Minute > 59) || (pDS1302->Time.Second > 59))
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{
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pDS1302->Time.Year = 25;
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pDS1302->Time.Month = 1;
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pDS1302->Time.Day = 1;
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pDS1302->Time.Hour = 0;
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pDS1302->Time.Minute = 0;
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pDS1302->Time.Second = 0;
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bsp_DS1302_Set(&pDS1302->Time);
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}
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}
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