stm32f103c8t6驱动ds1302

为了驱动DS1302时钟芯片，需要使用STM32F103C8T6的GPIO和SPI接口。以下是驱动DS1302的步骤：

1.包含DS1302.h头文件并定义DS1302ClassStruct结构体。

2.在DS1302ClassStruct结构体中定义初始化函数Init()、设置时间函数SetTime()和获取时间函数GetTime()。

3.在Init()函数中，初始化GPIO和SPI接口，并将DS1302芯片的CE引脚、IO引脚和SCLK引脚连接到STM32F103C8T6的GPIO引脚上。

4.在SetTime()函数中，将要设置的时间数据写入DS1302芯片的寄存器中。

5.在GetTime()函数中，从DS1302芯片的寄存器中读取时间数据。

以下是一个简单的DS1302驱动程序示例：

#include "DS1302.h"
#include "stm32f1xx_hal.h"

#define DS1302_CE_GPIO_Port GPIOA
#define DS1302_CE_Pin GPIO_PIN_0
#define DS1302_IO_GPIO_Port GPIOA
#define DS1302_IO_Pin GPIO_PIN_1
#define DS1302_SCLK_GPIO_Port GPIOA
#define DS1302_SCLK_Pin GPIO_PIN_2

SPI_HandleTypeDef hspi1;

void DS1302_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOA_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(DS1302_CE_GPIO_Port, DS1302_CE_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(DS1302_SCLK_GPIO_Port, DS1302_SCLK_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin : DS1302_CE_Pin */
  GPIO_InitStruct.Pin = DS1302_CE_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(DS1302_CE_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pin : DS1302_SCLK_Pin */
  GPIO_InitStruct.Pin = DS1302_SCLK_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(DS1302_SCLK_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pin : DS1302_IO_Pin */
  GPIO_InitStruct.Pin = DS1302_IO_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(DS1302_IO_GPIO_Port, &GPIO_InitStruct);

  /* SPI1 init */
  hspi1.Instance = SPI1;
  hspi1.Init.Mode = SPI_MODE_MASTER;
  hspi1.Init.Direction = SPI_DIRECTION_2LINES;
  hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
  hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
  hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
  hspi1.Init.NSS = SPI_NSS_SOFT;
  hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
  hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
  hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
  hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  hspi1.Init.CRCPolynomial = 10;
  if (HAL_SPI_Init(&hspi1) != HAL_OK)
  {
    Error_Handler();
  }
}

void DS1302_WriteByte(uint8_t data)
{
  uint8_t i;
  for (i = 0; i < 8; i++)
  {
    HAL_GPIO_WritePin(DS1302_SCLK_GPIO_Port, DS1302_SCLK_Pin, GPIO_PIN_RESET);
    if (data & 0x01)
    {
      HAL_GPIO_WritePin(DS1302_IO_GPIO_Port, DS1302_IO_Pin, GPIO_PIN_SET);
    }
    else
    {
      HAL_GPIO_WritePin(DS1302_IO_GPIO_Port, DS1302_IO_Pin, GPIO_PIN_RESET);
    }
    HAL_GPIO_WritePin(DS1302_SCLK_GPIO_Port, DS1302_SCLK_Pin, GPIO_PIN_SET);
    data >>= 1;
  }
}

uint8_t DS1302_ReadByte(void)
{
  uint8_t i, data = 0;
  for (i = 0; i < 8; i++)
  {
    HAL_GPIO_WritePin(DS1302_SCLK_GPIO_Port, DS1302_SCLK_Pin, GPIO_PIN_RESET);
    data >>= 1;
    if (HAL_GPIO_ReadPin(DS1302_IO_GPIO_Port, DS1302_IO_Pin))
    {
      data |= 0x80;
    }
    HAL_GPIO_WritePin(DS1302_SCLK_GPIO_Port, DS1302_SCLK_Pin, GPIO_PIN_SET);
  }
  return data;
}

void DS1302_WriteReg(uint8_t reg, uint8_t data)
{
  HAL_GPIO_WritePin(DS1302_CE_GPIO_Port, DS1302_CE_Pin, GPIO_PIN_RESET);
  DS1302_WriteByte(reg);
  DS1302_WriteByte(data);
  HAL_GPIO_WritePin(DS1302_CE_GPIO_Port, DS1302_CE_Pin, GPIO_PIN_SET);
}

uint8_t DS1302_ReadReg(uint8_t reg)
{
  uint8_t data;
  HAL_GPIO_WritePin(DS1302_CE_GPIO_Port, DS1302_CE_Pin, GPIO_PIN_RESET);
  DS1302_WriteByte(reg | 0x01);
  data = DS1302_ReadByte();
  HAL_GPIO_WritePin(DS1302_CE_GPIO_Port, DS1302_CE_Pin, GPIO_PIN_SET);
  return data;
}

void DS1302_SetTime(uint8_t *writeTime)
{
  uint8_t i;
  HAL_GPIO_WritePin(DS1302_CE_GPIO_Port, DS1302_CE_Pin, GPIO_PIN_RESET);
  DS1302_WriteByte(0xBE);
  for (i = 0; i < 8; i++)
  {
    DS1302_WriteByte(writeTime[i]);
  }
  HAL_GPIO_WritePin(DS1302_CE_GPIO_Port, DS1302_CE_Pin, GPIO_PIN_SET);
}

void DS1302_GetTime(DS1302TimeStruct *timeData)
{
  uint8_t i;
  HAL_GPIO_WritePin(DS1302_CE_GPIO_Port, DS1302_CE_Pin, GPIO_PIN_RESET);
  DS1302_WriteByte(0xBF);
  for (i = 0; i < 8; i++)
  {
    timeData->second = DS1302_ReadByte();
    timeData->minute = DS1302_ReadByte();
    timeData->hour = DS1302_ReadByte();
    timeData->day = DS1302_ReadByte();
    timeData->month = DS1302_ReadByte();
    timeData->week = DS1302_ReadByte();
    timeData->year = DS1302_ReadByte() + 2000;
  }
  HAL_GPIO_WritePin(DS1302_CE_GPIO_Port, DS1302_CE_Pin, GPIO_PIN_SET);
}

DS1302ClassStruct DS1302Class = {
    DS1302_Init,
    DS1302_SetTime,
    DS1302_GetTime
};