main.c

STM8示例程序

/**
  ******************************************************************************
  * @file SPI_FastCommunication\main.c
  * @brief This file contains the main function for SPI fast communication 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"
#include "microsd.h"
#include "mono_lcd.h"

/**
  * @addtogroup SPI_FastCommunication
  * @{
  */

/* Private define ------------------------------------------------------------*/
#define BufferSize ((u16)512)

/* Private define ------------------------------------------------------------*/
/* 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)

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
u16 Status = 0;
u8 Buffer_Block_Tx[BufferSize];
u8 Buffer_Block_Rx[BufferSize];
u8 Buffer_MultiBlock_Tx[1024];
u8 Buffer_MultiBlock_Rx[1024];
ErrorStatus TransferStatus1 = ERROR;
ErrorStatus TransferStatus2 = ERROR;
ErrorStatus TransferStatus3 = ERROR;


/* Private function prototypes -----------------------------------------------*/
void Delay (u16 nCount);
void Fill_Buffer(u8 *pBuffer, u16 BufferLength, u8 Offset);
ErrorStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength);

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

/* Global variables ----------------------------------------------------------*/
/* Public functions ----------------------------------------------------------*/

/**
  * @brief Validation firmware main entry point.
  * @par Parameters:
  * None
  * @retval void None
  * @par Required preconditions:
  * None
  * @par Library functions called:
  * - GPIO_Init()
  * - GPIO_WriteReverse()
	* - CLK_HSIPrescalerConfig()
	* - SPI_DeInit()
	* - SPI_Init()
	* - SPI_Cmd()
  */
void main(void)
{
    u8 i =0;

    /* Initialize I/Os in Output Mode */
    GPIO_Init(LEDS_PORT, LED1_PIN | LED2_PIN | LED3_PIN | LED4_PIN,GPIO_MODE_OUT_PP_LOW_FAST);

    /******************************Disable LCD*********************************/
    /* Initialize SPI in Master mode for LCD */
    SPI_DeInit();
    SPI_Init(SPI_FIRSTBIT_MSB, SPI_BAUDRATEPRESCALER_4, SPI_MODE_MASTER, SPI_CLOCKPOLARITY_HIGH, SPI_CLOCKPHASE_2EDGE, SPI_DATADIRECTION_1LINE_TX, SPI_NSS_SOFT, 0x07);

    SPI_Cmd(ENABLE);

    /* Initialize LCD*/
    LCD_Init();
    /* Clear LCD*/
    LCD_Clear();
    /* Disable Chip select*/
    LCD_ChipSelect(DISABLE);
    /* Read LCD status*/
    LCD_ReadStatus();
    /* Insert delay*/
    Delay(0xFFFF);
		
    /*************************Configue High Speed Clock**********************/
    /*High speed internal clock prescaler: 1*/
    CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);

    /***********************SPI and MicroSD initialization******************/
    /*SPI DeInit*/
    SPI_DeInit();

    /* Init the SPI in the fast communication fmaster/2 */
    SPI_Init(SPI_FIRSTBIT_MSB, SPI_BAUDRATEPRESCALER_2, SPI_MODE_MASTER, SPI_CLOCKPOLARITY_HIGH, SPI_CLOCKPHASE_2EDGE, SPI_DATADIRECTION_2LINES_FULLDUPLEX, SPI_NSS_SOFT, 0x07);

    SPI_Cmd(ENABLE);

    while (MSD_Detect() == MICROSD_NOT_PRESENT)
    {
        /* Wait MicroSD card insertion */
    }

    Delay(0xFFFF);
    /* Init the flash micro SD*/
    Status = MSD_Init();

    /***************************Block Read/Write******************************/
    /* Fill the buffer to send */
    Fill_Buffer(Buffer_Block_Tx, BufferSize, 0xAA);
    /* Write block of 512 bytes on address 0 */
    Status = MSD_WriteBlock(Buffer_Block_Tx, 0, BufferSize);
    /* Read block of 512 bytes from address 0 */
    Status = MSD_ReadBlock(Buffer_Block_Rx, 0, BufferSize);
    /* Check data */
    TransferStatus1 = Buffercmp(Buffer_Block_Tx, Buffer_Block_Rx, BufferSize);
    if (TransferStatus1 != SUCCESS)
    {
        while (1) /* Error while programming complement value */
        {
            GPIO_WriteReverse(LEDS_PORT, LED1_PIN);
            Delay((u16)0xFFFF);
            Delay((u16)0xFFFF);
        }
    }

    /***********************Multiple Block Read/Write**************************/
    /* Fill the buffer to send */
    Fill_Buffer(Buffer_MultiBlock_Tx, 1024, 0x10);
    /* Write multiple block of many bytes on address 0 */
    Status = MSD_WriteBuffer(Buffer_MultiBlock_Tx, 0, 1024);
    /* Read block of many bytes from address 0 */
    Status = MSD_ReadBuffer(Buffer_MultiBlock_Rx, 0, 1024);
    /* Check data */
    TransferStatus2 = Buffercmp(Buffer_MultiBlock_Tx, Buffer_MultiBlock_Rx, 1024);
    if (TransferStatus2 != SUCCESS)
    {
        while (1) /* Error while programming complement value */
        {
            GPIO_WriteReverse(LEDS_PORT, LED2_PIN);
            Delay((u16)0xFFFF);
            Delay((u16)0xFFFF);
        }
    }
    /****************** Successive Write/Read on many blocks*******************/
    /* Write/read procedure */
    for (i = 0; i < 10; i++)
    {
        /* Fill the buffer to send */
        Fill_Buffer(Buffer_Block_Tx, BufferSize, i);
        /* Write block of 512 bytes on address 0 */
        Status = MSD_WriteBlock(Buffer_Block_Tx, (i * 512), BufferSize);
        /* Read block of 512 bytes from address 0 */
        Status = MSD_ReadBlock(Buffer_Block_Rx, (i * 512), BufferSize);
        /* Check data */
        TransferStatus3 = Buffercmp(Buffer_Block_Tx, Buffer_Block_Rx, BufferSize);
    }
    if (TransferStatus3 != SUCCESS)
    {
        while (1) /* Error while programming complement value */
        {
            GPIO_WriteReverse(LEDS_PORT, LED3_PIN);
            Delay((u16)0xFFFF);
            Delay((u16)0xFFFF);
        }
    }
    while (1)
    {
        GPIO_WriteReverse(LEDS_PORT, (LED1_PIN | LED2_PIN | LED3_PIN | LED4_PIN));
        Delay((u16)0xFFFF);
        Delay((u16)0xFFFF);
    }
}
/**
  * @brief Fill the gloal buffer.
  * @par Parameters:
  * - pBuffer: pointer on the Buffer to fill
  * - BufferSize: size of the buffer to fill
  * - Offset: first value to fill on the Buffer
  * @retval
	* None
  * @par Required preconditions:
  * None
  * @par Library functions called:
  * None
  */
void Fill_Buffer(u8 *pBuffer, u16 BufferLength, u8 Offset)
{
    /* Put in global buffer same values */
    while (BufferLength--)
    {
        *pBuffer = Offset;
        pBuffer++;
    }
}
/**
  * @brief Compares two buffers.
  * @par Parameters:
  * - pBuffer1, pBuffer2: buffers to be compared.
  * - BufferLength: buffer's length
  * @retval
	* - PASSED: pBuffer1 identical to pBuffer2
	* - FAILED: pBuffer1 differs from pBuffer2
  * @par Required preconditions:
  * None
  * @par Library functions called:
  * None
  */
ErrorStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength)
{
    while (BufferLength--)
    {
        if (*pBuffer1 != *pBuffer2)
        {
            return ERROR;
        }

        pBuffer1++;
        pBuffer2++;
    }

    return SUCCESS;
}

/**
  * @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****/