update spi interface sdcard driver.
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@131 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong
parent
1042d2dd87
commit
5e0d137313
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@ -35,9 +35,11 @@
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Select MSD Card: ChipSelect pin low */
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#define MSD_CS_LOW() GPIO_ResetBits(GPIOD, GPIO_Pin_9)
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#define MSD_CS_LOW() GPIO_ResetBits(GPIOD, GPIO_Pin_9)
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/* Deselect MSD Card: ChipSelect pin high */
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#define MSD_CS_HIGH() GPIO_SetBits(GPIOD, GPIO_Pin_9)
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#define MSD_CS_HIGH() GPIO_SetBits(GPIOD, GPIO_Pin_9)
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#define MSD_SPI SPI1
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#define MSD_RCC_SPI RCC_APB2Periph_SPI1
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/* Private function prototypes -----------------------------------------------*/
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static void SPI_Config(void);
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@ -55,7 +57,7 @@ u8 MSD_Init(void)
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{
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u32 i = 0;
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/* Initialize SPI1 */
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/* Initialize SPI */
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SPI_Config();
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/* MSD chip select high */
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MSD_CS_HIGH();
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@ -705,9 +707,9 @@ u8 MSD_GoIdleState(void)
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void MSD_WriteByte(u8 Data)
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{
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/* Wait until the transmit buffer is empty */
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while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
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while (SPI_I2S_GetFlagStatus(MSD_SPI, SPI_I2S_FLAG_TXE) == RESET);
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/* Send the byte */
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SPI_I2S_SendData(SPI1, Data);
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SPI_I2S_SendData(MSD_SPI, Data);
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}
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/*******************************************************************************
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@ -722,14 +724,14 @@ u8 MSD_ReadByte(void)
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u8 Data = 0;
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/* Wait until the transmit buffer is empty */
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while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
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while (SPI_I2S_GetFlagStatus(MSD_SPI, SPI_I2S_FLAG_TXE) == RESET);
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/* Send the byte */
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SPI_I2S_SendData(SPI1, DUMMY);
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SPI_I2S_SendData(MSD_SPI, DUMMY);
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/* Wait until a data is received */
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while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
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while (SPI_I2S_GetFlagStatus(MSD_SPI, SPI_I2S_FLAG_RXNE) == RESET);
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/* Get the received data */
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Data = SPI_I2S_ReceiveData(SPI1);
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Data = SPI_I2S_ReceiveData(MSD_SPI);
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/* Return the shifted data */
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return Data;
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@ -737,23 +739,23 @@ u8 MSD_ReadByte(void)
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/*******************************************************************************
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* Function Name : SPI_Config
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* Description : Initializes the SPI1 and CS pins.
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* Description : Initializes the SPI and CS pins.
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* Input : None
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* Output : None
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* Return : None
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*******************************************************************************/
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void SPI_Config(void)
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{
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u16 i, j;
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u32 delay;
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GPIO_InitTypeDef GPIO_InitStructure;
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SPI_InitTypeDef SPI_InitStructure;
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/* GPIOA and GPIOC Periph clock enable */
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOD, ENABLE);
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/* SPI1 Periph clock enable */
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
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/* SPI Periph clock enable */
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RCC_APB2PeriphClockCmd(MSD_RCC_SPI, ENABLE);
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/* Configure SPI1 pins: SCK, MISO and MOSI */
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/* Configure SPI pins: SCK, MISO and MOSI */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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@ -765,7 +767,7 @@ void SPI_Config(void)
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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GPIO_Init(GPIOD, &GPIO_InitStructure);
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/* SPI1 Config */
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/* SPI Config */
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SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
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SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
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SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
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@ -775,18 +777,14 @@ void SPI_Config(void)
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SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
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SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
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SPI_InitStructure.SPI_CRCPolynomial = 7;
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SPI_Init(SPI1, &SPI_InitStructure);
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SPI_Init(MSD_SPI, &SPI_InitStructure);
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/* SPI1 enable */
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SPI_Cmd(SPI1, ENABLE);
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/* SPI enable */
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SPI_Cmd(MSD_SPI, ENABLE);
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/* active SD card */
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GPIO_ResetBits(GPIOD, GPIO_Pin_10);
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for(i=0;i<65530;i++)
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{
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for(j=0;j<5000;j++)
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;
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}
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for (delay = 0; delay < 0xfffff; delay ++);
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}
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/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
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@ -828,7 +826,7 @@ static rt_size_t rt_msd_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_siz
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rt_uint32_t i;
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status = MSD_RESPONSE_NO_ERROR;
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rt_kprintf("read: 0x%x, size %d\n", pos, size);
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// rt_kprintf("read: 0x%x, size %d\n", pos, size);
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/* read all sectors */
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for (i = 0; i < size / SECTOR_SIZE; i ++)
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@ -855,7 +853,7 @@ static rt_size_t rt_msd_write (rt_device_t dev, rt_off_t pos, const void* buffer
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rt_uint32_t i;
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status = MSD_RESPONSE_NO_ERROR;
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rt_kprintf("write: 0x%x, size %d\n", pos, size);
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// rt_kprintf("write: 0x%x, size %d\n", pos, size);
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/* read all sectors */
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for (i = 0; i < size / SECTOR_SIZE; i ++)
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