rt_int32_t stm32f4xx_sdio_init(void)
{
struct rt_mmcsd_host *host;
NVIC_InitTypeDef NVIC_InitStructure;
host = mmcsd_alloc_host();
if (!host)
{
return -RT_ERROR;
}
stm32f4_sdio = rt_malloc(sizeof(struct stm32f4xx_sdio));
if (!stm32f4_sdio)
{
rt_kprintf("alloc stm32f4_sdio failed\n");
goto err;
}
rt_memset(stm32f4_sdio, 0, sizeof(struct stm32f4xx_sdio));
host->ops = &ops;
host->freq_min = 375000;
host->freq_max = 25000000;
host->valid_ocr = VDD_32_33 | VDD_33_34;
host->flags = MMCSD_BUSWIDTH_4 | MMCSD_MUTBLKWRITE;
host->max_seg_size = 65535;
host->max_dma_segs = 2;
host->max_blk_size = 512;
host->max_blk_count = 4096;
stm32f4_sdio->host = host;
SDIO_StructInit(&SDIO_InitStructure);
/* SDIO Peripheral Low Level Init */
SD_LowLevel_Init();
NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
host->private_data = stm32f4_sdio;
mmcsd_change(host);
return 0;
err:
mmcsd_free_host(host);
return -RT_ENOMEM;
}
/**
* @brief Initializes the SD/SD communication.
* @param None
* @retval The SD Response:
* - SD_RESPONSE_FAILURE: Sequence failed
* - SD_RESPONSE_NO_ERROR: Sequence succeed
*/
SD_Error SD_Init(void)
{
uint32_t i = 0;
/*!< Initialize SD_SPI */
SD_LowLevel_Init();
/*!< SD chip select high */
SD_CS_HIGH();
/*!< Send dummy byte 0xFF, 10 times with CS high */
/*!< Rise CS and MOSI for 80 clocks cycles */
for (i = 0; i <= 9; i++)
{
/*!< Send dummy byte 0xFF */
SD_WriteByte(SD_DUMMY_BYTE);
}
/*------------Put SD in SPI mode--------------*/
/*!< SD initialized and set to SPI mode properly */
return (SD_GoIdleState());
}
/**
* @brief Initializes the SD/SD communication.
* @param None
* @retval The SD Response:
* - SD_RESPONSE_FAILURE: Sequence failed
* - SD_RESPONSE_NO_ERROR: Sequence succeed
*/
SD_Error SD_Init(void)
{
uint32_t TimeOut, i = 0;
SD_Error Status = SD_RESPONSE_NO_ERROR;
/*!< Initialize SD_SPI 初始化SPI相应管脚与处理器的SPI接口 */
//printf("(SD Init in SPI mode)");
SD_LowLevel_Init();
SD_SPI_SetSpeedLow();
//rt_kprintf("sd_init 0\n");
/*------------Put SD in SPI mode--------------*/
/*!< SD initialized and set to SPI mode properly */
TimeOut = 0;
do
{
/*!< SD chip select high */
SD_CS_HIGH();
/*!< Send dummy byte 0xFF, 10 times with CS high */
/*!< Rise CS and MOSI for 80 clocks cycles */
for (i = 0; i <= 9; i++)
{
/*!< Send dummy byte 0xFF */
SD_WriteByte(SD_DUMMY_BYTE);
}
Status = SD_GoIdleState();
//rt_kprintf("sd_init 1 %d\n",(uint32_t)Status);
if(TimeOut > 6)
{
break;
}
TimeOut++;
}while(Status);
SD_SPI_SetSpeedHi();
return (Status);
}
void SDCardReadWriteTextTask(void* parameters)
{
uint8_t outbuf[512];
uint8_t inbuf[512];
int i;
//LED_LowLevel_Init();
//UART_LowLevel_Init();
SD_LowLevel_Init(); //Initialize PINS, vector table and SDIO interface
//UART_SendLine("Ready...Steady\n");
printf("SSD\n\r");
LEDOn(LED2);
//Initialize the SD
SD_Init(); //After return from this function sd is in transfer mode.
//UART_SendLine("GO\n");
printf("SDI\n\r");
LEDOff(LED2);
//Write a single block to the SD
for (i=0;i<512;i++) {
outbuf[i]='a';
}
//Single Block Test
SD_WriteSingleBlock(outbuf, 3000);
SD_ReadSingleBlock(inbuf, 3000);
//UART_SendLine("First Block\n");
//UART_Send(inbuf,512);
printf("\n\r%s", "First Block");
printf("\n\r%i,%i,%i,%i", (int)inbuf[0], (int)inbuf[1], (int)inbuf[2], (int)inbuf[3]);
SD_WriteSingleBlock(outbuf, 3001);
SD_ReadSingleBlock(inbuf, 3001);
//UART_SendLine("Second Block\n");
//UART_Send(inbuf,512);
printf("\n\r%s", "Second Block");
printf("\n\r%i,%i,%i,%i", (int)inbuf[0], (int)inbuf[1], (int)inbuf[2], (int)inbuf[3]);
//Multiple block
SD_StartMultipleBlockWrite(1000);
SD_WriteData(outbuf,500);
SD_WriteData(outbuf+50,50);
SD_WriteData(outbuf,500);
SD_StopMultipleBlockWrite();
SD_ReadSingleBlock(inbuf, 1000);
//UART_SendLine("Mult. Block 1\n");
//UART_Send(inbuf,512);
printf("\n\r%s", "Mult. Block 1");
printf("\n\r%i,%i,%i,%i", (int)inbuf[0], (int)inbuf[1], (int)inbuf[2], (int)inbuf[3]);
SD_WaitTransmissionEnd();
SD_ReadSingleBlock(inbuf, 1001);
//UART_SendLine("Mult. Block 2\n");
//UART_Send(inbuf,512);
printf("\n\r%s", "Mult. Block 2");
printf("\n\r%i,%i,%i,%i", (int)inbuf[0], (int)inbuf[1], (int)inbuf[2], (int)inbuf[3]);
// LEDOn(LED6);
portTickType lastExecutionTime = xTaskGetTickCount();
for (;;)
{
DelayUntilTime( &lastExecutionTime, SDCardReadWriteTextTaskT);
}
}
