标题: stm8单片机IIC读写24c32芯片源程序 [打印本页]
作者: 王杰    时间: 2019-8-9 14:02
标题: stm8单片机IIC读写24c32芯片源程序
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单片机源程序如下:
  1. /*
  2.   ******************************************************************************
  3.   * @file    24c32.c
  4.   * @author  Wang
  5.   * @version V1.0.0
  6.   * @date    6-August-2019
  7.   * @brief   This file contains all the functions for the read or write 24c32  
  8.   ******************************************************************************
  9. */

  11. /* Includes ------------------------------------------------------------------*/
  12. #include "24c32.h"

  14. /* Private typedef -----------------------------------------------------------*/
  15. /* Private define ------------------------------------------------------------*/
  16. /* Private macro -------------------------------------------------------------*/
  17. /* Private variables ---------------------------------------------------------*/
  18. /* Private function prototypes -----------------------------------------------*/
  19. /* Private functions ---------------------------------------------------------*/

  21. /* Public functions ----------------------------------------------------------*/


  24. /*
  25.   * @brief  Write data to 24c32 device
  26.   * @param  addr : slaver address
  27.   * @param  reg_addr : register address
  28.   * @param  send_data : send data
  29.   * @retval None
  30. */
  31. void Write_24c32(uint8_t addr , uint8_t reg_addr , uint8_t send_data )
  32. {
  33.         Soft_iic_Start();
  34.         Soft_iic_Write_Byte(addr);
  35.         Soft_iic_Write_Byte(reg_addr>>8);        /*High address */
  36.         Soft_iic_Write_Byte(reg_addr%256);        /*Low address */
  37.         Soft_iic_Write_Byte(send_data);
  38.         Soft_iic_Stop();
  39. }

  41. /*
  42.   * @brief  Read data from 24c32 device
  43.   * @param  addr : slaver address
  44.   * @param  reg_addr : register address
  45.   * @retval return read data from DS1307 device
  46. */
  47. uint8_t Read_24c32(uint8_t addr , uint8_t reg_addr)
  48. {
  49.         uint8_t data = 0;
  50.         Soft_iic_Start();
  51.         Soft_iic_Write_Byte(addr);
  52.         Soft_iic_Write_Byte(reg_addr>>8);        /*High address */
  53.         Soft_iic_Write_Byte(reg_addr%256);        /*Low address */
  54.        
  55.         Soft_iic_Start();
  56.         Soft_iic_Write_Byte(addr | 0x01);
  57.         data = Soft_iic_Read_Byte(0);
  58.         Soft_iic_Stop();
  59.         return data;
  60. }

  62. /*
  63.   * @brief  Test the 24c32 about read and write
  64.   * @param  None
  65.   * @retval None
  66. */

  68. void Test_24c32(void)
  69. {
  70.         uint8_t recv_data;
  71.         Write_24c32(0xA0,0,10);
  72.         Soft_delay_10us(500);  /* need to add delay */
  73.         recv_data = Read_24c32(0xA0,0);
  74.        
  75.         if(recv_data == 10)
  76.                 {
  77.                         LED_On();
  78.                         Timer1_Delay_1ms(100);
  79.                         LED_Off();
  80.                         Timer1_Delay_1ms(100);
  81.                 }
  82. }

  84. /****************************END OF FILE**************************************/
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作者: amwu_1984    时间: 2019-9-17 10:39
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