main_slave_10bit.c

STM8示例程序

/**
  ******************************************************************************
  * @file I2C_10bitsCommunication\main_slave_10bit.c
  * @brief This file contains the main function for I2C configured in slave 10 bit addressing mode.
  * @author STMicroelectronics - MCD Application Team
  * @version V1.0.1
  * @date 09/22/2008
  ******************************************************************************
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2008 STMicroelectronics</center></h2>
  * @image html logo.bmp
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "stm8s_lib.h"

/* Evalboard I/Os configuration */

#define LEDS_PORT (GPIOH)
#define LED1_PIN  (GPIO_PIN_3)
#define LED2_PIN  (GPIO_PIN_2)
#define LED3_PIN  (GPIO_PIN_1)
#define LED4_PIN  (GPIO_PIN_0)

#define TX_BUFFERSIZE       ((u8)8)
#define RX_BUFFERSIZE       ((u8)4)

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/

u8 I2C_Buffer_Tx[TX_BUFFERSIZE];
u8 I2C_Buffer_Rx[RX_BUFFERSIZE];

/* Private function prototypes -----------------------------------------------*/
void Delay (u16 nCount);

/* Private functions ---------------------------------------------------------*/

void Delay(u16 nCount)
{
  /* Decrement nCount value */
  while (nCount != 0)
  {
    nCount--;
  }
}
/**
  * @addtogroup I2C_10bit-slave
  * @{
  */
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Public functions ----------------------------------------------------------*/

/**
  * @brief How to perform  a communication between 2 I2C in 10bit addressing mode, fast mode (slave receiver)
  * @par Examples description
  * - receive a buffer from a second 10bit addressed I2C device.
  * @par Parameters:
  * None
  * @retval void None
  * @par Required preconditions:
  * None
  * @par Called functions:
   * - I2C_DeInit
   * -I2C_Init 
  * - I2C_SendData
  * - I2C_CheckEvent
  * - I2C_ClearFlag
  */
void main(void)
{
  u8 Rx_Idx = 0;
  u8 ans;
	
	/* Initialize I/Os in Output Mode */
  GPIO_Init(LEDS_PORT, (LED1_PIN | LED2_PIN | LED3_PIN | LED4_PIN), GPIO_MODE_OUT_PP_LOW_FAST);
  
  /* Optional: put here as example only */
  I2C_DeInit();
  
  /* Initialize the I2C peripheral */
  I2C_Init(200000, 0x330, I2C_DUTYCYCLE_2, I2C_ACK_CURR, I2C_ADDMODE_10BIT, 4);
  
    /* All LEDs are ON per default */
  GPIO_WriteHigh(LEDS_PORT, (LED1_PIN | LED2_PIN | LED3_PIN | LED4_PIN));

  /* Data to be sent by master */
  I2C_Buffer_Tx[0] = 0x00;
  I2C_Buffer_Tx[1] = 0x55;
  I2C_Buffer_Tx[2] = 0xAA;
  I2C_Buffer_Tx[3] = 0xFF;  
  
  /* Test on EV1 and clear it */
  while(!I2C_CheckEvent(I2C_EVENT_SLAVE_ADDRESS_MATCHED));
  
	I2C_ClearFlag(I2C_FLAG_ADDRESSSENTMATCHED);
  
  /* Receive data */
   while (Rx_Idx < TX_BUFFERSIZE)
  {
    /* Test on EV2 and clear it */
    while(!I2C_CheckEvent(I2C_EVENT_SLAVE_BYTE_RECEIVED));
    /* Store received data  */
    I2C_Buffer_Rx[Rx_Idx++] = I2C_ReceiveData();
  }
  
  /* Test on EV4 and clear it */
  while(!I2C_CheckEvent(I2C_EVENT_SLAVE_STOP_DETECTED));
  
  /* Clear STOPF flag */
  I2C_ClearFlag(I2C_FLAG_STOPDETECTION);

  /* Check received data */
  	
	while(1)
	{
		GPIO_WriteReverse(LEDS_PORT,  (LED1_PIN | LED2_PIN | LED3_PIN | LED4_PIN));
		Delay((u16)60000);
	}
}



/**
  * @brief Reports the name of the source file and the source line number where
  * the assert error has occurred.
  * User can add his own implementation to report the file name and line number.
  * ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line)
  * @retval void None
  * @par Required preconditions:
  * None
  * @par Called functions:
  * None
  */
#ifdef FULL_ASSERT
void assert_failed(u8 *file, u16 line)
#else
void assert_failed(void)
#endif
{
  /* Add your own code to manage an assert error */
  /* Infinite loop */
  while (1)
  {
  }
}

/**
  * @}
  */

/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/