main.c

STM8示例程序

/**
  ******************************************************************************
  * @file I2C_Interrupt\main.c
  * @brief This file contains the main function for I2C Interrupt example.
  * @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)

/**
  * @addtogroup I2C_Interrupt
  * @{
  */

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/

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

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

void Delay(u16 nCount)
{
    /* Decrement nCount value */
    while (nCount != 0)
    {
        nCount--;
    }
}

/* Public functions ----------------------------------------------------------*/

/**
  * @brief How to use I2C in master transmitter with interrupt.
  * @par Examples description
  * - Send value 0x5A to slave using interrupts.
  * @par Parameters:
  * None
  * @retval void None
  * @par Required preconditions:
  * None
  * @par Called functions:
  * - GPIO_Init
  * - GPIO_WriteHigh
  * - GPIO_WriteReverse
  * - I2C_GenerateSTART
  * - I2C_DeInit
   * - I2C_ITConfig
  * - enableInterrupts
  */
void main(void)
{

    /* 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 */
    I2C_Init(100000, 0xA0, I2C_DUTYCYCLE_2, I2C_ACK_CURR, I2C_ADDMODE_7BIT, 8);

    /* Configuration of interrupts only */
    I2C_ITConfig((I2C_IT_EVT |I2C_IT_BUF), ENABLE);

    enableInterrupts();

    /* All LEDs are ON per default */
    GPIO_WriteHigh(LEDS_PORT, (LED1_PIN | LED2_PIN | LED3_PIN | LED4_PIN));

    /*----- Transmission Phase -----*/
    /* Send START condition */
    I2C_GenerateSTART(ENABLE);

    /* Toggle all LEDs when I2C communication is terminated */
    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****/