367 lines
11 KiB
C
367 lines
11 KiB
C
#include "drv_sdio_sd.h"
|
||
#include "string.h"
|
||
#include <rtthread.h>
|
||
#include <dfs_fs.h>
|
||
|
||
SD_HandleTypeDef SDCARD_Handler;
|
||
HAL_SD_CardInfoTypedef SDCardInfo; //SD卡信息结构体
|
||
DMA_HandleTypeDef SDTxDMAHandler,SDRxDMAHandler; //SD卡DMA发送和接收句柄
|
||
|
||
|
||
//SD卡初始化
|
||
//返回值:0 初始化正确；其他值，初始化错误
|
||
rt_uint8_t SD_Init(void)
|
||
{
|
||
rt_uint8_t SD_Error;
|
||
|
||
//初始化时的时钟不能大于400KHZ
|
||
SDCARD_Handler.Instance=SDIO;
|
||
SDCARD_Handler.Init.ClockEdge=SDIO_CLOCK_EDGE_RISING; //上升沿
|
||
SDCARD_Handler.Init.ClockBypass=SDIO_CLOCK_BYPASS_DISABLE; //不使用bypass模式，直接用HCLK进行分频得到SDIO_CK
|
||
SDCARD_Handler.Init.ClockPowerSave=SDIO_CLOCK_POWER_SAVE_DISABLE; //空闲时不关闭时钟电源
|
||
SDCARD_Handler.Init.BusWide=SDIO_BUS_WIDE_1B; //1位数据线
|
||
SDCARD_Handler.Init.HardwareFlowControl=SDIO_HARDWARE_FLOW_CONTROL_DISABLE;//关闭硬件流控
|
||
SDCARD_Handler.Init.ClockDiv=SDIO_TRANSFER_CLK_DIV; //SD传输时钟频率最大25MHZ
|
||
|
||
SD_Error=HAL_SD_Init(&SDCARD_Handler,&SDCardInfo);
|
||
if(SD_Error!=SD_OK) return 1;
|
||
|
||
SD_Error=HAL_SD_WideBusOperation_Config(&SDCARD_Handler,SDIO_BUS_WIDE_4B);//使能宽总线模式
|
||
if(SD_Error!=SD_OK) return 2;
|
||
return 0;
|
||
}
|
||
|
||
//SDMMC底层驱动，时钟使能，引脚配置，DMA配置
|
||
//此函数会被HAL_SD_Init()调用
|
||
//hsd:SD卡句柄
|
||
void HAL_SD_MspInit(SD_HandleTypeDef *hsd)
|
||
{
|
||
DMA_HandleTypeDef TxDMAHandler,RxDMAHandler;
|
||
GPIO_InitTypeDef GPIO_Initure;
|
||
|
||
__HAL_RCC_SDIO_CLK_ENABLE(); //使能SDIO时钟
|
||
__HAL_RCC_DMA2_CLK_ENABLE(); //使能DMA2时钟
|
||
__HAL_RCC_GPIOC_CLK_ENABLE(); //使能GPIOC时钟
|
||
__HAL_RCC_GPIOD_CLK_ENABLE(); //使能GPIOD时钟
|
||
|
||
//PC8,9,10,11,12
|
||
GPIO_Initure.Pin=GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12;
|
||
GPIO_Initure.Mode=GPIO_MODE_AF_PP; //推挽复用
|
||
GPIO_Initure.Pull=GPIO_PULLUP; //上拉
|
||
GPIO_Initure.Speed=GPIO_SPEED_HIGH; //高速
|
||
GPIO_Initure.Alternate=GPIO_AF12_SDIO; //复用为SDIO
|
||
HAL_GPIO_Init(GPIOC,&GPIO_Initure); //初始化
|
||
|
||
//PD2
|
||
GPIO_Initure.Pin=GPIO_PIN_2;
|
||
HAL_GPIO_Init(GPIOD,&GPIO_Initure); //初始化
|
||
|
||
#if (SD_DMA_MODE==1) //使用DMA模式
|
||
HAL_NVIC_SetPriority(SDMMC1_IRQn,2,0); //配置SDMMC1中断，抢占优先级2，子优先级0
|
||
HAL_NVIC_EnableIRQ(SDMMC1_IRQn); //使能SDMMC1中断
|
||
|
||
//配置发送DMA
|
||
SDRxDMAHandler.Instance=DMA2_Stream3;
|
||
SDRxDMAHandler.Init.Channel=DMA_CHANNEL_4;
|
||
SDRxDMAHandler.Init.Direction=DMA_PERIPH_TO_MEMORY;
|
||
SDRxDMAHandler.Init.PeriphInc=DMA_PINC_DISABLE;
|
||
SDRxDMAHandler.Init.MemInc=DMA_MINC_ENABLE;
|
||
SDRxDMAHandler.Init.PeriphDataAlignment=DMA_PDATAALIGN_WORD;
|
||
SDRxDMAHandler.Init.MemDataAlignment=DMA_MDATAALIGN_WORD;
|
||
SDRxDMAHandler.Init.Mode=DMA_PFCTRL;
|
||
SDRxDMAHandler.Init.Priority=DMA_PRIORITY_VERY_HIGH;
|
||
SDRxDMAHandler.Init.FIFOMode=DMA_FIFOMODE_ENABLE;
|
||
SDRxDMAHandler.Init.FIFOThreshold=DMA_FIFO_THRESHOLD_FULL;
|
||
SDRxDMAHandler.Init.MemBurst=DMA_MBURST_INC4;
|
||
SDRxDMAHandler.Init.PeriphBurst=DMA_PBURST_INC4;
|
||
|
||
__HAL_LINKDMA(hsd, hdmarx, SDRxDMAHandler); //将接收DMA和SD卡的发送DMA连接起来
|
||
HAL_DMA_DeInit(&SDRxDMAHandler);
|
||
HAL_DMA_Init(&SDRxDMAHandler); //初始化接收DMA
|
||
|
||
//配置接收DMA
|
||
SDTxDMAHandler.Instance=DMA2_Stream6;
|
||
SDTxDMAHandler.Init.Channel=DMA_CHANNEL_4;
|
||
SDTxDMAHandler.Init.Direction=DMA_MEMORY_TO_PERIPH;
|
||
SDTxDMAHandler.Init.PeriphInc=DMA_PINC_DISABLE;
|
||
SDTxDMAHandler.Init.MemInc=DMA_MINC_ENABLE;
|
||
SDTxDMAHandler.Init.PeriphDataAlignment=DMA_PDATAALIGN_WORD;
|
||
SDTxDMAHandler.Init.MemDataAlignment=DMA_MDATAALIGN_WORD;
|
||
SDTxDMAHandler.Init.Mode=DMA_PFCTRL;
|
||
SDTxDMAHandler.Init.Priority=DMA_PRIORITY_VERY_HIGH;
|
||
SDTxDMAHandler.Init.FIFOMode=DMA_FIFOMODE_ENABLE;
|
||
SDTxDMAHandler.Init.FIFOThreshold=DMA_FIFO_THRESHOLD_FULL;
|
||
SDTxDMAHandler.Init.MemBurst=DMA_MBURST_INC4;
|
||
SDTxDMAHandler.Init.PeriphBurst=DMA_PBURST_INC4;
|
||
|
||
__HAL_LINKDMA(hsd, hdmatx, SDTxDMAHandler);//将发送DMA和SD卡的发送DMA连接起来
|
||
HAL_DMA_DeInit(&SDTxDMAHandler);
|
||
HAL_DMA_Init(&SDTxDMAHandler); //初始化发送DMA
|
||
|
||
|
||
HAL_NVIC_SetPriority(DMA2_Stream3_IRQn, 3, 0); //接收DMA中断优先级
|
||
HAL_NVIC_EnableIRQ(DMA2_Stream3_IRQn);
|
||
HAL_NVIC_SetPriority(DMA2_Stream6_IRQn, 3, 0); //发送DMA中断优先级
|
||
HAL_NVIC_EnableIRQ(DMA2_Stream6_IRQn);
|
||
#endif
|
||
}
|
||
|
||
//得到卡信息
|
||
//cardinfo:卡信息存储区
|
||
//返回值:错误状态
|
||
rt_uint8_t SD_GetCardInfo(HAL_SD_CardInfoTypedef *cardinfo)
|
||
{
|
||
rt_uint8_t sta;
|
||
sta=HAL_SD_Get_CardInfo(&SDCARD_Handler,cardinfo);
|
||
return sta;
|
||
}
|
||
#if (SD_DMA_MODE==1) //DMA模式
|
||
|
||
//通过DMA读取SD卡一个扇区
|
||
//buf:读数据缓存区
|
||
//sector:扇区地址
|
||
//blocksize:扇区大小(一般都是512字节)
|
||
//cnt:扇区个数
|
||
//返回值:错误状态;0,正常;其他,错误代码;
|
||
rt_uint8_t SD_ReadBlocks_DMA(uint32_t *buf,uint64_t sector ,uint32_t cnt)
|
||
{
|
||
rt_uint8_t err=SD_OK;
|
||
err=HAL_SD_ReadBlocks_DMA(&SDCARD_Handler,buf,sector,SECTOR_SIZE,cnt);//通过DMA读取SD卡一个扇区
|
||
if(err==SD_OK)//读取成功
|
||
{
|
||
//等待读取完成
|
||
err=HAL_SD_CheckReadOperation(&SDCARD_Handler,(uint32_t)SD_TIMEOUT);
|
||
}
|
||
|
||
return err;
|
||
}
|
||
|
||
//写SD卡
|
||
//buf:写数据缓存区
|
||
//sector:扇区地址
|
||
//blocksize:扇区大小(一般都是512字节)
|
||
//cnt:扇区个数
|
||
//返回值:错误状态;0,正常;其他,错误代码;
|
||
rt_uint8_t SD_WriteBlocks_DMA(uint32_t *buf,uint64_t sector,uint32_t cnt)
|
||
{
|
||
rt_uint8_t err=SD_OK;
|
||
err=HAL_SD_WriteBlocks_DMA(&SDCARD_Handler,buf,sector,SECTOR_SIZE,cnt);//通过DMA写SD卡一个扇区
|
||
if(err==SD_OK)//写成功
|
||
{
|
||
err=HAL_SD_CheckWriteOperation(&SDCARD_Handler,(uint32_t)SD_TIMEOUT);//等待读取完成/
|
||
}
|
||
return err;
|
||
}
|
||
|
||
|
||
//SDMMC1中断服务函数
|
||
void SDMMC1_IRQHandler(void)
|
||
{
|
||
HAL_SD_IRQHandler(&SDCARD_Handler);
|
||
}
|
||
|
||
//DMA2数据流6中断服务函数
|
||
void DMA2_Stream6_IRQHandler(void)
|
||
{
|
||
HAL_DMA_IRQHandler(SDCARD_Handler.hdmatx);
|
||
}
|
||
|
||
//DMA2数据流3中断服务函数
|
||
void DMA2_Stream3_IRQHandler(void)
|
||
{
|
||
HAL_DMA_IRQHandler(SDCARD_Handler.hdmarx);
|
||
}
|
||
#else //轮训模式
|
||
|
||
//读取SD卡扇区
|
||
//buf:读数据缓存区
|
||
//sector:扇区地址
|
||
//cnt:扇区个数
|
||
//返回值:错误状态;0,正常;其他,错误代码;
|
||
rt_uint8_t SD_ReadBlocks(uint32_t *buf,uint64_t sector ,uint32_t cnt)
|
||
{
|
||
rt_uint8_t err=SD_OK;
|
||
err=HAL_SD_ReadBlocks(&SDCARD_Handler,buf,sector,SECTOR_SIZE,cnt);//通过DMA读取SD卡一个扇区
|
||
return err;
|
||
}
|
||
|
||
//写SD扇区
|
||
//buf:写数据缓存区
|
||
//sector:扇区地址
|
||
//cnt:扇区个数
|
||
//返回值:错误状态;0,正常;其他,错误代码;
|
||
rt_uint8_t SD_WriteBlocks(uint32_t *buf,uint64_t sector,uint32_t cnt)
|
||
{
|
||
return HAL_SD_WriteBlocks(&SDCARD_Handler,buf,sector,SECTOR_SIZE,cnt);
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
* RT-Thread SD Card Driver
|
||
* 20100715 Bernard support SDHC card great than 4G.
|
||
* 20110905 JoyChen support to STM32F2xx
|
||
*/
|
||
|
||
|
||
|
||
|
||
static struct rt_device sdcard_device;
|
||
static struct rt_semaphore sd_lock;
|
||
|
||
/* RT-Thread Device Driver Interface */
|
||
static rt_err_t rt_sdcard_init(rt_device_t dev)
|
||
{
|
||
if (rt_sem_init(&sd_lock, "sdlock", 1, RT_IPC_FLAG_FIFO) != RT_EOK)
|
||
{
|
||
rt_kprintf("init sd lock semaphore failed\n");
|
||
}
|
||
else
|
||
rt_kprintf("SD Card init OK\n");
|
||
|
||
return RT_EOK;
|
||
}
|
||
|
||
static rt_err_t rt_sdcard_open(rt_device_t dev, rt_uint16_t oflag)
|
||
{
|
||
return RT_EOK;
|
||
}
|
||
|
||
static rt_err_t rt_sdcard_close(rt_device_t dev)
|
||
{
|
||
return RT_EOK;
|
||
}
|
||
|
||
static uint32_t sdio_buffer[512/sizeof(uint32_t)];
|
||
static rt_size_t rt_sdcard_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
|
||
{
|
||
rt_uint8_t status = SD_OK;
|
||
|
||
rt_sem_take(&sd_lock, RT_WAITING_FOREVER);
|
||
|
||
if(((uint32_t)buffer & 0x03) != 0)
|
||
{
|
||
/* non-aligned. */
|
||
uint32_t i;
|
||
uint64_t sector_adr;
|
||
uint8_t* copy_buffer;
|
||
|
||
sector_adr = (uint64_t)pos*SECTOR_SIZE;
|
||
copy_buffer = (uint8_t*)buffer;
|
||
|
||
for(i=0; i<size; i++)
|
||
{
|
||
#if (SD_DMA_MODE==1)
|
||
status=SD_ReadBlocks_DMA(sdio_buffer,sector_adr,1);//通过DMA写SD卡一个扇区
|
||
#else
|
||
status=SD_ReadBlocks(sdio_buffer,sector_adr,1);
|
||
#endif
|
||
memcpy(copy_buffer, sdio_buffer, SECTOR_SIZE);
|
||
sector_adr += SECTOR_SIZE;
|
||
copy_buffer += SECTOR_SIZE;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
#if (SD_DMA_MODE==1)
|
||
status=SD_ReadBlocks_DMA(buffer,(uint64_t)pos*SECTOR_SIZE,size);//通过DMA写SD卡一个扇区
|
||
#else
|
||
SD_ReadBlocks(buffer,(uint64_t)pos*SECTOR_SIZE,size);
|
||
#endif
|
||
}
|
||
|
||
|
||
rt_sem_release(&sd_lock);
|
||
if (status == SD_OK) return size;
|
||
|
||
rt_kprintf("read failed: %d, buffer 0x%08x\n", status, buffer);
|
||
return 0;
|
||
}
|
||
|
||
static rt_size_t rt_sdcard_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
|
||
{
|
||
rt_uint8_t status = SD_OK;
|
||
rt_sem_take(&sd_lock, RT_WAITING_FOREVER);
|
||
|
||
if(((uint32_t)buffer & 0x03) != 0)
|
||
{
|
||
/* non-aligned. */
|
||
uint32_t i;
|
||
uint64_t sector_adr;
|
||
uint8_t* copy_buffer;
|
||
|
||
sector_adr = (uint64_t)pos*SECTOR_SIZE;
|
||
copy_buffer = (uint8_t*)buffer;
|
||
|
||
for(i=0; i<size; i++)
|
||
{
|
||
memcpy(sdio_buffer, copy_buffer, SECTOR_SIZE);
|
||
#if (SD_DMA_MODE==1)
|
||
status=SD_WriteBlocks_DMA((uint32_t*)sdio_buffer,sector_adr,1);
|
||
#else
|
||
status=SD_WriteBlocks((uint32_t*)sdio_buffer,sector_adr,1);
|
||
#endif
|
||
sector_adr += SECTOR_SIZE;
|
||
copy_buffer += SECTOR_SIZE;
|
||
|
||
}
|
||
}
|
||
else
|
||
{
|
||
#if (SD_DMA_MODE==1)
|
||
status=SD_WriteBlocks_DMA((uint32_t*)buffer,(uint64_t)pos*SECTOR_SIZE,size);
|
||
#else
|
||
status=SD_WriteBlocks((uint32_t*)buffer,(uint64_t)pos*SECTOR_SIZE,size);
|
||
#endif
|
||
}
|
||
// }
|
||
rt_sem_release(&sd_lock);
|
||
if (status == SD_OK) return size;
|
||
rt_kprintf("write failed: %d, buffer 0x%08x\n", status, buffer);
|
||
return 0;
|
||
}
|
||
|
||
static rt_err_t rt_sdcard_control(rt_device_t dev, int cmd, void *args)
|
||
{
|
||
RT_ASSERT(dev != RT_NULL);
|
||
|
||
if (cmd == RT_DEVICE_CTRL_BLK_GETGEOME)
|
||
{
|
||
struct rt_device_blk_geometry *geometry;
|
||
|
||
geometry = (struct rt_device_blk_geometry *)args;
|
||
if (geometry == RT_NULL) return -RT_ERROR;
|
||
|
||
geometry->bytes_per_sector = 512;
|
||
geometry->block_size = SDCardInfo.CardBlockSize;
|
||
geometry->sector_count = SDCardInfo.CardCapacity/SDCardInfo.CardBlockSize;
|
||
}
|
||
|
||
return RT_EOK;
|
||
}
|
||
|
||
static int rt_hw_sdcard_init(void)
|
||
{
|
||
if (SD_Init() == SD_OK)
|
||
{
|
||
/* register sdcard device */
|
||
sdcard_device.type = RT_Device_Class_Block;
|
||
sdcard_device.init = rt_sdcard_init;
|
||
sdcard_device.open = rt_sdcard_open;
|
||
sdcard_device.close = rt_sdcard_close;
|
||
sdcard_device.read = rt_sdcard_read;
|
||
sdcard_device.write = rt_sdcard_write;
|
||
sdcard_device.control = rt_sdcard_control;
|
||
|
||
/* no private */
|
||
sdcard_device.user_data = &SDCardInfo;
|
||
|
||
rt_device_register(&sdcard_device, "sd0",
|
||
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
|
||
|
||
return RT_EOK;
|
||
}
|
||
rt_kprintf("sdcard init failed\n");
|
||
return RT_ERROR;
|
||
}
|
||
INIT_BOARD_EXPORT(rt_hw_sdcard_init);
|