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816 lines
22 KiB
C
816 lines
22 KiB
C
/*
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* FreeRTOS+FAT build 191128 - Note: FreeRTOS+FAT is still in the lab!
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* Copyright (C) 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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* Authors include James Walmsley, Hein Tibosch and Richard Barry
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* https://www.FreeRTOS.org
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*
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*/
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/* Standard includes. */
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stdio.h>
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/* FreeRTOS includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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#include "semphr.h"
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#include "portmacro.h"
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/* FreeRTOS+FAT includes. */
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#include "ff_sddisk.h"
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#include "ff_sys.h"
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/* Atmel includes. */
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#include <board.h>
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#include <sd_mmc.h>
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#include "hr_gettime.h"
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/* Misc definitions. */
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#define sdSIGNATURE 0x41404342UL
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#define sdHUNDRED_64_BIT ( 100ull )
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#define sdBYTES_PER_MB ( 1024ull * 1024ull )
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#define sdSECTORS_PER_MB ( sdBYTES_PER_MB / 512ull )
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#define sdIOMAN_MEM_SIZE 4096
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#define xSDCardInfo ( sd_mmc_cards[ 0 ] )
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#define sdAligned( pvAddress ) ( ( ( ( size_t ) ( pvAddress ) ) & ( sizeof( size_t ) - 1 ) ) == 0 )
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#if( ffconfigSDIO_DRIVER_USES_INTERRUPT != 0 )
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/* Define a time-out for all DMA transactions in msec. */
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#ifndef sdMAX_TRANSFER_TIME
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#define sdMAX_TRANSFER_TIME 4000
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#endif
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/* Define all possible interrupts of interest. */
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#define sdHSMCI_INTERRUPT_FLAGS \
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HSMCI_IER_NOTBUSY | \
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HSMCI_IER_UNRE | \
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HSMCI_IER_OVRE | \
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HSMCI_IER_DTOE | \
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HSMCI_IER_DCRCE | \
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HSMCI_IER_TXBUFE | \
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HSMCI_IER_RXBUFF | \
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HSMCI_IER_XFRDONE
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#define sdMSMCI_USE_SEMAPHORE 1
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#endif /* ffconfigSDIO_DRIVER_USES_INTERRUPT */
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/*-----------------------------------------------------------*/
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#if( ffconfigSDIO_DRIVER_USES_INTERRUPT != 0 )
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static TickType_t xDMARemainingTime;
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static TimeOut_t xDMATimeOut;
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static volatile uint32_t ulSDInterruptStatus;
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static volatile int iWaitForWriting;
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#if( sdMSMCI_USE_SEMAPHORE != 0 )
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static SemaphoreHandle_t xSDSemaphore = NULL;
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#else
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static TaskHandle_t xSDTaskHandle = NULL;
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#endif
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#endif /* ffconfigSDIO_DRIVER_USES_INTERRUPT */
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/*
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* Return pdFALSE if the SD card is not inserted.
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*/
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static BaseType_t prvSDDetect( void );
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/*
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* Check if the card is present, and if so, print out some info on the card.
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*/
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static BaseType_t prvSDMMCInit( BaseType_t xDriveNumber );
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/*-----------------------------------------------------------*/
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/*
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* Mutex for partition.
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*/
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static SemaphoreHandle_t xPlusFATMutex = NULL;
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/*
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* Remembers if the card is currently considered to be present.
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*/
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static BaseType_t xSDCardStatus = pdFALSE;
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/*-----------------------------------------------------------*/
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typedef struct {
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uint32_t ulStart;
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uint32_t ulSize;
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} MemoryGroup_t;
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#define ARRAY_SIZE(x) (int)(sizeof(x)/sizeof(x)[0])
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static const MemoryGroup_t xMemories[] = {
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{ IRAM_ADDR, IRAM_SIZE },
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{ EBI_CS1_ADDR, 512ul * 1024ul },
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{ EBI_CS3_ADDR, 512ul * 1024ul },
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};
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static BaseType_t prvIsInternalRAM( uint8_t *pucBuffer )
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{
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BaseType_t xResult = pdFALSE, xIndex;
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uint32_t ulAddress = ( uint32_t ) pucBuffer;
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for( xIndex = 0; xIndex < ARRAY_SIZE( xMemories ); xIndex++ )
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{
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if( ( ulAddress >= xMemories[ xIndex].ulStart ) && ( ulAddress < xMemories[ xIndex].ulStart + xMemories[ xIndex].ulSize ) )
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{
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xResult = pdTRUE;
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break;
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}
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}
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return xResult;
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}
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/*-----------------------------------------------------------*/
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static int32_t prvFFRead( uint8_t *pucBuffer, uint32_t ulSectorNumber, uint32_t ulSectorCount, FF_Disk_t *pxDisk )
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{
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int32_t lReturnCode = FF_ERR_IOMAN_OUT_OF_BOUNDS_READ | FF_ERRFLAG, lResult = pdFALSE;
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if( ( pxDisk != NULL ) &&
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( xSDCardStatus == pdPASS ) &&
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( pxDisk->ulSignature == sdSIGNATURE ) &&
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( pxDisk->xStatus.bIsInitialised != pdFALSE ) &&
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( ulSectorNumber < pxDisk->ulNumberOfSectors ) &&
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( ( pxDisk->ulNumberOfSectors - ulSectorNumber ) >= ulSectorCount ) )
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{
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/* As the MCI driver is configured to use DMA, it must be tested that
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the buffer is located in internal SRAM ("IRAM") and if it is 4-byte aligned. */
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if( sdAligned( pucBuffer ) && prvIsInternalRAM( pucBuffer ) )
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{
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lResult = sd_physical_read( ulSectorNumber, pucBuffer, ulSectorCount );
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}
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else
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{
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uint32_t ulSector;
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uint8_t *pucDMABuffer = ffconfigMALLOC( 512ul );
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/* The buffer is NOT word-aligned, read to an aligned buffer and then
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copy the data to the user provided buffer. */
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if( pucDMABuffer != NULL )
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{
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for( ulSector = 0; ulSector < ulSectorCount; ulSector++ )
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{
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lResult = sd_physical_read( ulSectorNumber + ulSector, pucDMABuffer, 1 );
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if( lResult == pdFALSE )
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{
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break;
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}
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/* Copy to the user-provided buffer. */
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memcpy( pucBuffer + 512ul * ulSector, pucDMABuffer, 512ul );
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}
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ffconfigFREE( pucDMABuffer );
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}
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else
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{
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FF_PRINTF( "prvFFRead: malloc failed\n" );
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lResult = pdFALSE;
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}
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}
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if( lResult != pdFALSE )
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{
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lReturnCode = 0L;
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}
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else
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{
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/* Some error occurred. */
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FF_PRINTF( "prvFFRead: %lu: %ld\n", ulSectorNumber, lResult );
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}
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}
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else
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{
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/* Make sure no random data is in the returned buffer. */
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memset( ( void * ) pucBuffer, '\0', ulSectorCount * 512UL );
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if( pxDisk->xStatus.bIsInitialised != pdFALSE )
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{
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FF_PRINTF( "prvFFRead: warning: %lu + %lu > %lu\n", ulSectorNumber, ulSectorCount, pxDisk->ulNumberOfSectors );
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}
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}
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return lReturnCode;
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}
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/*-----------------------------------------------------------*/
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static int32_t prvFFWrite( uint8_t *pucBuffer, uint32_t ulSectorNumber, uint32_t ulSectorCount, FF_Disk_t *pxDisk )
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{
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int32_t lReturnCode = FF_ERR_IOMAN_OUT_OF_BOUNDS_READ | FF_ERRFLAG, lResult = pdFALSE;
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if( ( pxDisk != NULL ) &&
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( xSDCardStatus == pdPASS ) &&
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( pxDisk->ulSignature == sdSIGNATURE ) &&
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( pxDisk->xStatus.bIsInitialised != pdFALSE ) &&
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( ulSectorNumber < pxDisk->ulNumberOfSectors ) &&
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( ( pxDisk->ulNumberOfSectors - ulSectorNumber ) >= ulSectorCount ) )
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{
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/* As the MCI driver is configured to use DMA, it must be tested that
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the buffer is located in internal SRAM ("IRAM") and if it is 4-byte aligned. */
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if( sdAligned( pucBuffer ) && prvIsInternalRAM( pucBuffer ) )
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{
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lResult = sd_physical_write( ulSectorNumber, pucBuffer, ulSectorCount );
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}
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else
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{
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uint32_t ulSector;
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uint8_t *pucDMABuffer = ffconfigMALLOC( 512ul );
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/* The buffer is NOT word-aligned, read to an aligned buffer and then
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copy the data to the user provided buffer. */
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if( pucDMABuffer != NULL )
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{
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for( ulSector = 0; ulSector < ulSectorCount; ulSector++ )
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{
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/* Copy from the user provided buffer to the temporary buffer. */
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memcpy( pucDMABuffer, pucBuffer + 512ul * ulSector, 512ul );
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lResult = sd_physical_write( ulSectorNumber + ulSector, pucDMABuffer, 1 );
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if( lResult == pdFALSE )
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{
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break;
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}
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}
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ffconfigFREE( pucDMABuffer );
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}
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else
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{
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FF_PRINTF( "prvFFWrite: malloc failed\n" );
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lResult = pdFALSE;
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}
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}
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if( lResult != pdFALSE )
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{
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/* No errors. */
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lReturnCode = 0L;
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}
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else
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{
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FF_PRINTF( "prvFFWrite: %lu: %ld\n", ulSectorNumber, lResult );
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}
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}
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else
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{
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if( pxDisk->xStatus.bIsInitialised != pdFALSE )
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{
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FF_PRINTF( "prvFFWrite: warning: %lu + %lu > %lu\n", ulSectorNumber, ulSectorCount, pxDisk->ulNumberOfSectors );
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}
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}
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return lReturnCode;
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}
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/*-----------------------------------------------------------*/
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void FF_SDDiskFlush( FF_Disk_t *pxDisk )
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{
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if( ( pxDisk != NULL ) &&
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( pxDisk->xStatus.bIsInitialised != pdFALSE ) &&
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( pxDisk->pxIOManager != NULL ) )
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{
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FF_FlushCache( pxDisk->pxIOManager );
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}
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}
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/*-----------------------------------------------------------*/
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/* Initialise the SDIO driver and mount an SD card */
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FF_Disk_t *FF_SDDiskInit( const char *pcName )
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{
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FF_Error_t xFFError;
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BaseType_t xPartitionNumber = 0;
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FF_CreationParameters_t xParameters;
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FF_Disk_t *pxDisk;
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#if( ffconfigSDIO_DRIVER_USES_INTERRUPT != 0 )
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{
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NVIC_SetPriority( HSMCI_IRQn, configHSMCI_INTERRUPT_PRIORITY );
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NVIC_EnableIRQ( HSMCI_IRQn );
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#if( sdMSMCI_USE_SEMAPHORE != 0 )
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{
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if( xSDSemaphore == NULL )
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{
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xSDSemaphore = xSemaphoreCreateBinary();
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}
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}
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#endif /* sdMSMCI_USE_SEMAPHORE */
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}
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#endif /* ffconfigSDIO_DRIVER_USES_INTERRUPT */
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xSDCardStatus = prvSDMMCInit( 0 );
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if( xSDCardStatus == pdPASS )
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{
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pxDisk = (FF_Disk_t *)ffconfigMALLOC( sizeof( *pxDisk ) );
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if( pxDisk != NULL )
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{
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/* Initialise the created disk structure. */
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memset( pxDisk, '\0', sizeof( *pxDisk ) );
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/* The Atmel MMC driver sets capacity as a number of KB.
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Divide by two to get the number of 512-byte sectors. */
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pxDisk->ulNumberOfSectors = xSDCardInfo.capacity << 1;
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if( xPlusFATMutex == NULL )
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{
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xPlusFATMutex = xSemaphoreCreateRecursiveMutex();
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}
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pxDisk->ulSignature = sdSIGNATURE;
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if( xPlusFATMutex != NULL)
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{
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memset( &xParameters, '\0', sizeof( xParameters ) );
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xParameters.ulMemorySize = sdIOMAN_MEM_SIZE;
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xParameters.ulSectorSize = 512;
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xParameters.fnWriteBlocks = prvFFWrite;
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xParameters.fnReadBlocks = prvFFRead;
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xParameters.pxDisk = pxDisk;
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/* prvFFRead()/prvFFWrite() are not re-entrant and must be
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protected with the use of a semaphore. */
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xParameters.xBlockDeviceIsReentrant = pdFALSE;
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/* The semaphore will be used to protect critical sections in
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the +FAT driver, and also to avoid concurrent calls to
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prvFFRead()/prvFFWrite() from different tasks. */
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xParameters.pvSemaphore = ( void * ) xPlusFATMutex;
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pxDisk->pxIOManager = FF_CreateIOManger( &xParameters, &xFFError );
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if( pxDisk->pxIOManager == NULL )
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{
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FF_PRINTF( "FF_SDDiskInit: FF_CreateIOManger: %s\n", (const char*)FF_GetErrMessage( xFFError ) );
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FF_SDDiskDelete( pxDisk );
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pxDisk = NULL;
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}
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else
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{
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pxDisk->xStatus.bIsInitialised = pdTRUE;
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pxDisk->xStatus.bPartitionNumber = xPartitionNumber;
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if( FF_SDDiskMount( pxDisk ) == 0 )
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{
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FF_SDDiskDelete( pxDisk );
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pxDisk = NULL;
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}
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else
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{
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if( pcName == NULL )
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{
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pcName = "/";
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}
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FF_FS_Add( pcName, pxDisk );
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FF_PRINTF( "FF_SDDiskInit: Mounted SD-card as root \"%s\"\n", pcName );
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}
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} /* if( pxDisk->pxIOManager != NULL ) */
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} /* if( xPlusFATMutex != NULL) */
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} /* if( pxDisk != NULL ) */
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else
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{
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FF_PRINTF( "FF_SDDiskInit: Malloc failed\n" );
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}
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} /* if( xSDCardStatus == pdPASS ) */
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else
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{
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FF_PRINTF( "FF_SDDiskInit: prvSDMMC_Init failed\n" );
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pxDisk = NULL;
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}
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return pxDisk;
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}
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/*-----------------------------------------------------------*/
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BaseType_t FF_SDDiskFormat( FF_Disk_t *pxDisk, BaseType_t xPartitionNumber )
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{
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FF_Error_t xError;
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BaseType_t xReturn = pdFAIL;
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xError = FF_Unmount( pxDisk );
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if( FF_isERR( xError ) != pdFALSE )
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{
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FF_PRINTF( "FF_SDDiskFormat: unmount fails: %08x\n", ( unsigned ) xError );
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}
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else
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{
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/* Format the drive - try FAT32 with large clusters. */
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xError = FF_Format( pxDisk, xPartitionNumber, pdFALSE, pdFALSE);
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if( FF_isERR( xError ) )
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{
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FF_PRINTF( "FF_SDDiskFormat: %s\n", (const char*)FF_GetErrMessage( xError ) );
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}
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else
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{
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FF_PRINTF( "FF_SDDiskFormat: OK, now remounting\n" );
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pxDisk->xStatus.bPartitionNumber = xPartitionNumber;
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xError = FF_SDDiskMount( pxDisk );
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FF_PRINTF( "FF_SDDiskFormat: rc %08x\n", ( unsigned )xError );
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if( FF_isERR( xError ) == pdFALSE )
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{
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xReturn = pdPASS;
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}
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}
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}
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return xReturn;
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}
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/*-----------------------------------------------------------*/
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BaseType_t FF_SDDiskUnmount( FF_Disk_t *pxDisk )
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{
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FF_Error_t xFFError;
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BaseType_t xReturn = pdPASS;
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if( ( pxDisk != NULL ) && ( pxDisk->xStatus.bIsMounted != pdFALSE ) )
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{
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pxDisk->xStatus.bIsMounted = pdFALSE;
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xFFError = FF_Unmount( pxDisk );
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if( FF_isERR( xFFError ) )
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{
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FF_PRINTF( "FF_SDDiskUnmount: rc %08x\n", ( unsigned )xFFError );
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xReturn = pdFAIL;
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}
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else
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{
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FF_PRINTF( "Drive unmounted\n" );
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}
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}
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return xReturn;
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}
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/*-----------------------------------------------------------*/
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BaseType_t FF_SDDiskReinit( FF_Disk_t *pxDisk )
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{
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BaseType_t xStatus = prvSDMMCInit( 0 ); /* Hard coded index. */
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/*_RB_ parameter not used. */
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( void ) pxDisk;
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FF_PRINTF( "FF_SDDiskReinit: rc %08x\n", ( unsigned ) xStatus );
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return xStatus;
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}
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/*-----------------------------------------------------------*/
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BaseType_t FF_SDDiskMount( FF_Disk_t *pxDisk )
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{
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FF_Error_t xFFError;
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BaseType_t xReturn;
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/* Mount the partition */
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xFFError = FF_Mount( pxDisk, pxDisk->xStatus.bPartitionNumber );
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if( FF_isERR( xFFError ) )
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{
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FF_PRINTF( "FF_SDDiskMount: %08lX\n", xFFError );
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xReturn = pdFAIL;
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}
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else
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{
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pxDisk->xStatus.bIsMounted = pdTRUE;
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FF_PRINTF( "****** FreeRTOS+FAT initialized %lu sectors\n", pxDisk->pxIOManager->xPartition.ulTotalSectors );
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FF_SDDiskShowPartition( pxDisk );
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xReturn = pdPASS;
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}
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return xReturn;
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}
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/*-----------------------------------------------------------*/
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FF_IOManager_t *sddisk_ioman( FF_Disk_t *pxDisk )
|
|
{
|
|
FF_IOManager_t *pxReturn;
|
|
|
|
if( ( pxDisk != NULL ) && ( pxDisk->xStatus.bIsInitialised != pdFALSE ) )
|
|
{
|
|
pxReturn = pxDisk->pxIOManager;
|
|
}
|
|
else
|
|
{
|
|
pxReturn = NULL;
|
|
}
|
|
return pxReturn;
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
/* Release all resources */
|
|
BaseType_t FF_SDDiskDelete( FF_Disk_t *pxDisk )
|
|
{
|
|
if( pxDisk != NULL )
|
|
{
|
|
pxDisk->ulSignature = 0;
|
|
pxDisk->xStatus.bIsInitialised = 0;
|
|
if( pxDisk->pxIOManager != NULL )
|
|
{
|
|
if( FF_Mounted( pxDisk->pxIOManager ) != pdFALSE )
|
|
{
|
|
FF_Unmount( pxDisk );
|
|
}
|
|
FF_DeleteIOManager( pxDisk->pxIOManager );
|
|
}
|
|
|
|
vPortFree( pxDisk );
|
|
}
|
|
return 1;
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
BaseType_t FF_SDDiskShowPartition( FF_Disk_t *pxDisk )
|
|
{
|
|
FF_Error_t xError;
|
|
uint64_t ullFreeSectors;
|
|
uint32_t ulTotalSizeMB, ulFreeSizeMB;
|
|
int iPercentageFree;
|
|
FF_IOManager_t *pxIOManager;
|
|
const char *pcTypeName = "unknown type";
|
|
BaseType_t xReturn = pdPASS;
|
|
|
|
if( pxDisk == NULL )
|
|
{
|
|
xReturn = pdFAIL;
|
|
}
|
|
else
|
|
{
|
|
pxIOManager = pxDisk->pxIOManager;
|
|
|
|
FF_PRINTF( "Reading FAT and calculating Free Space\n" );
|
|
|
|
switch( pxIOManager->xPartition.ucType )
|
|
{
|
|
case FF_T_FAT12:
|
|
pcTypeName = "FAT12";
|
|
break;
|
|
|
|
case FF_T_FAT16:
|
|
pcTypeName = "FAT16";
|
|
break;
|
|
|
|
case FF_T_FAT32:
|
|
pcTypeName = "FAT32";
|
|
break;
|
|
|
|
default:
|
|
pcTypeName = "UNKOWN";
|
|
break;
|
|
}
|
|
|
|
FF_GetFreeSize( pxIOManager, &xError );
|
|
|
|
ullFreeSectors = pxIOManager->xPartition.ulFreeClusterCount * pxIOManager->xPartition.ulSectorsPerCluster;
|
|
iPercentageFree = ( int ) ( ( sdHUNDRED_64_BIT * ullFreeSectors + pxIOManager->xPartition.ulDataSectors / 2 ) /
|
|
( ( uint64_t )pxIOManager->xPartition.ulDataSectors ) );
|
|
|
|
ulTotalSizeMB = pxIOManager->xPartition.ulDataSectors / sdSECTORS_PER_MB;
|
|
ulFreeSizeMB = ( uint32_t ) ( ullFreeSectors / sdSECTORS_PER_MB );
|
|
|
|
/* It is better not to use the 64-bit format such as %Lu because it
|
|
might not be implemented. */
|
|
FF_PRINTF( "Partition Nr %8u\n", pxDisk->xStatus.bPartitionNumber );
|
|
FF_PRINTF( "Type %8u (%s)\n", pxIOManager->xPartition.ucType, pcTypeName );
|
|
FF_PRINTF( "VolLabel '%8s' \n", pxIOManager->xPartition.pcVolumeLabel );
|
|
FF_PRINTF( "TotalSectors %8lu\n", pxIOManager->xPartition.ulTotalSectors );
|
|
FF_PRINTF( "SecsPerCluster %8lu\n", pxIOManager->xPartition.ulSectorsPerCluster );
|
|
FF_PRINTF( "Size %8lu MB\n", ulTotalSizeMB );
|
|
FF_PRINTF( "FreeSize %8lu MB ( %d perc free )\n", ulFreeSizeMB, iPercentageFree );
|
|
}
|
|
|
|
return xReturn;
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
BaseType_t FF_SDDiskDetect( FF_Disk_t *pxDisk )
|
|
{
|
|
BaseType_t xIsPresent;
|
|
void *pvSemaphore;
|
|
|
|
if( ( pxDisk != NULL ) && ( pxDisk->pxIOManager ) )
|
|
{
|
|
pvSemaphore = pxDisk->pxIOManager->pvSemaphore;
|
|
}
|
|
else
|
|
{
|
|
pvSemaphore = NULL;
|
|
}
|
|
|
|
/*_RB_ Can these NULL checks be moved inside the FF_nnnSemaphore() functions? */
|
|
/*_HT_ I'm afraid not, both functions start with configASSERT( pxSemaphore ); */
|
|
if( pvSemaphore != NULL )
|
|
{
|
|
FF_PendSemaphore( pvSemaphore );
|
|
}
|
|
|
|
xIsPresent = prvSDDetect();
|
|
|
|
if( pvSemaphore != NULL )
|
|
{
|
|
FF_ReleaseSemaphore( pvSemaphore );
|
|
}
|
|
|
|
return xIsPresent;
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
static BaseType_t prvSDDetect( void )
|
|
{
|
|
static BaseType_t xWasPresent;
|
|
BaseType_t xIsPresent;
|
|
sd_mmc_err_t xSDPresence;
|
|
|
|
if( xWasPresent == pdFALSE )
|
|
{
|
|
/* Try to initialize SD MMC stack */
|
|
sd_mmc_init();
|
|
xSDPresence = sd_mmc_check( 0 );
|
|
if( ( xSDPresence == SD_MMC_OK ) || ( xSDPresence == SD_MMC_INIT_ONGOING ) )
|
|
{
|
|
xIsPresent = pdTRUE;
|
|
}
|
|
else
|
|
{
|
|
xIsPresent = pdFALSE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* See if the card is still present. */
|
|
xSDPresence = sd_mmc_check_status(0);
|
|
if( xSDPresence == SD_MMC_OK )
|
|
{
|
|
xIsPresent = pdTRUE;
|
|
}
|
|
else
|
|
{
|
|
xIsPresent = pdFALSE;
|
|
}
|
|
}
|
|
xWasPresent = xIsPresent;
|
|
|
|
return xIsPresent;
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
static BaseType_t prvSDMMCInit( BaseType_t xDriveNumber )
|
|
{
|
|
BaseType_t xReturn;
|
|
|
|
/* 'xDriveNumber' not yet in use. */
|
|
( void ) xDriveNumber;
|
|
|
|
/* Check if the SD card is plugged in the slot */
|
|
if( prvSDDetect() == pdFALSE )
|
|
{
|
|
FF_PRINTF( "No SD card detected\n" );
|
|
xReturn = pdFAIL;
|
|
}
|
|
else
|
|
{
|
|
FF_PRINTF( "HAL_SD_Init: type: %s Capacity: %lu MB\n",
|
|
xSDCardInfo.type & CARD_TYPE_HC ? "SDHC" : "SD",
|
|
( xSDCardInfo.capacity << 1 ) / 2048 );
|
|
|
|
xReturn = pdPASS;
|
|
}
|
|
|
|
return xReturn;
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
#if( ffconfigSDIO_DRIVER_USES_INTERRUPT != 0 )
|
|
void HSMCI_Handler( void )
|
|
{
|
|
uint32_t ulSR;
|
|
BaseType_t xSwitchRequired = pdFALSE;
|
|
|
|
ulSR = HSMCI->HSMCI_SR & HSMCI->HSMCI_IMR;
|
|
HSMCI->HSMCI_IDR = ulSR;
|
|
ulSDInterruptStatus |= ulSR;
|
|
#if( sdMSMCI_USE_SEMAPHORE != 0 )
|
|
{
|
|
if( xSDSemaphore != NULL )
|
|
{
|
|
xSemaphoreGiveFromISR( xSDSemaphore, &xSwitchRequired );
|
|
}
|
|
}
|
|
#else
|
|
{
|
|
if( xSDTaskHandle != NULL )
|
|
{
|
|
vTaskNotifyGiveFromISR( xSDTaskHandle, ( BaseType_t * ) &xSwitchRequired );
|
|
}
|
|
}
|
|
#endif
|
|
if( xSwitchRequired != pdFALSE )
|
|
{
|
|
portEND_SWITCHING_ISR( xSwitchRequired );
|
|
}
|
|
}
|
|
#endif /* ffconfigSDIO_DRIVER_USES_INTERRUPT */
|
|
/*-----------------------------------------------------------*/
|
|
|
|
#if( ffconfigSDIO_DRIVER_USES_INTERRUPT != 0 )
|
|
void vMCIEventSetupFunction( int iForWriting )
|
|
{
|
|
iWaitForWriting = iForWriting != 0;
|
|
|
|
#if( sdMSMCI_USE_SEMAPHORE == 0 )
|
|
{
|
|
xSDTaskHandle = xTaskGetCurrentTaskHandle();
|
|
}
|
|
#endif
|
|
ulSDInterruptStatus = 0;
|
|
HSMCI->HSMCI_IER = sdHSMCI_INTERRUPT_FLAGS;
|
|
|
|
/* A DMA transfer to or from the SD-card is about to start.
|
|
Reset the timers that will be used in prvEventWaitFunction() */
|
|
xDMARemainingTime = pdMS_TO_TICKS( sdMAX_TRANSFER_TIME );
|
|
vTaskSetTimeOutState( &xDMATimeOut );
|
|
}
|
|
#endif /* ffconfigSDIO_DRIVER_USES_INTERRUPT */
|
|
/*-----------------------------------------------------------*/
|
|
|
|
#if( ffconfigSDIO_DRIVER_USES_INTERRUPT != 0 )
|
|
void vMCIEventReadyFunction()
|
|
{
|
|
#if( sdMSMCI_USE_SEMAPHORE == 0 )
|
|
{
|
|
xSDTaskHandle = NULL;
|
|
}
|
|
#endif
|
|
ulSDInterruptStatus = 0;
|
|
HSMCI->HSMCI_IDR = sdHSMCI_INTERRUPT_FLAGS;
|
|
}
|
|
#endif /* ffconfigSDIO_DRIVER_USES_INTERRUPT */
|
|
/*-----------------------------------------------------------*/
|
|
|
|
#if( ffconfigSDIO_DRIVER_USES_INTERRUPT != 0 )
|
|
uint32_t ulMCIEventWaitFunction( uint32_t ulMask )
|
|
{
|
|
/*
|
|
* It was measured how quickly a DMA interrupt was received. It varied
|
|
* between 0 and 4 ms.
|
|
* <= 1 ms : 8047
|
|
* <= 2 ms : 1850
|
|
* <= 3 ms : 99
|
|
* <= 4 ms : 79
|
|
* >= 5 ms : 0 times
|
|
*/
|
|
if( xTaskCheckForTimeOut( &xDMATimeOut, &xDMARemainingTime ) != pdFALSE )
|
|
{
|
|
/* The timeout has been reached, no need to block. */
|
|
FF_PRINTF( "ulMCIEventWaitFunction: %s timed out. SR = %08x\n",
|
|
iWaitForWriting ? "Write" : "Read", ulSDInterruptStatus );
|
|
}
|
|
else
|
|
{
|
|
/* The timeout has not been reached yet, block on the semaphore. */
|
|
#if( sdMSMCI_USE_SEMAPHORE != 0 )
|
|
{
|
|
if( ( ulSDInterruptStatus & ulMask ) == 0ul )
|
|
{
|
|
xSemaphoreTake( xSDSemaphore, xDMARemainingTime );
|
|
}
|
|
}
|
|
#else
|
|
{
|
|
if( ( ulSDInterruptStatus & ulMask ) == 0ul )
|
|
{
|
|
ulTaskNotifyTake( pdFALSE, xDMARemainingTime );
|
|
}
|
|
}
|
|
#endif
|
|
if( xTaskCheckForTimeOut( &xDMATimeOut, &xDMARemainingTime ) != pdFALSE )
|
|
{
|
|
FF_PRINTF( "ulMCIEventWaitFunction: %s timed out. SR = %08x\n",
|
|
iWaitForWriting ? "Write" : "Read", ulSDInterruptStatus );
|
|
}
|
|
}
|
|
|
|
return ulSDInterruptStatus;
|
|
}
|
|
#endif /* ffconfigSDIO_DRIVER_USES_INTERRUPT */
|
|
/*-----------------------------------------------------------*/
|
|
|