446 lines
11 KiB
C++
446 lines
11 KiB
C++
/*
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* Copyright (C) EdgeTX
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*
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* Based on code named
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* opentx - https://github.com/opentx/opentx
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* th9x - http://code.google.com/p/th9x
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* er9x - http://code.google.com/p/er9x
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* gruvin9x - http://code.google.com/p/gruvin9x
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*
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* License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "diskio_sdio.h"
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#include "stm32_dma.h"
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#include "stm32_hal.h"
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#include "stm32_hal_ll.h"
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#include "stm32_gpio_driver.h"
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#include "hal.h"
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#if !defined(SD_SPI)
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// #include "delays_driver.h"
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#include "debug.h"
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#include <string.h>
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/* Configure PC.08, PC.09, PC.10, PC.11 pins: D0, D1, D2, D3 pins */
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#if !defined(SD_SDIO_DATA_GPIO) && !defined(SD_SDIO_DATA_GPIO_PINS)
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#define SD_SDIO_DATA_GPIO GPIOC
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#define SD_SDIO_DATA_GPIO_PINS \
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(LL_GPIO_PIN_8 | LL_GPIO_PIN_9 | LL_GPIO_PIN_10 | LL_GPIO_PIN_11)
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#endif
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/* Configure PD.02 CMD line */
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#if !defined(SD_SDIO_CMD_GPIO) && !defined(SD_SDIO_CMD_GPIO_PIN)
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#define SD_SDIO_CMD_GPIO GPIOD
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#define SD_SDIO_CMD_GPIO_PIN LL_GPIO_PIN_2
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#endif
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#if !defined(SD_SDIO_CLK_GPIO) && !defined(SD_SDIO_CLK_GPIO_PIN)
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#define SD_SDIO_CLK_GPIO GPIOC
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#define SD_SDIO_CLK_GPIO_PIN LL_GPIO_PIN_12
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#endif
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#if FF_MAX_SS != FF_MIN_SS
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#error "Variable sector size is not supported"
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#endif
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#define BLOCK_SIZE FF_MAX_SS
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#define SD_TIMEOUT 300 /* 300ms */
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// HAL state
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static SD_HandleTypeDef sdio;
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static DMA_HandleTypeDef sdioTxDma;
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// Disk status
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static volatile uint32_t WriteStatus;
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static volatile uint32_t ReadStatus;
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static void sdio_low_level_init(void)
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{
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/* Enable the SDIO APB2 Clock */
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__HAL_RCC_SDIO_CLK_ENABLE();
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LL_GPIO_InitTypeDef GPIO_InitStructure;
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LL_GPIO_StructInit(&GPIO_InitStructure);
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stm32_gpio_enable_clock(SD_SDIO_DATA_GPIO);
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stm32_gpio_enable_clock(SD_SDIO_CMD_GPIO);
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stm32_gpio_enable_clock(SD_SDIO_CLK_GPIO);
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GPIO_InitStructure.Pin = SD_SDIO_DATA_GPIO_PINS;
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GPIO_InitStructure.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
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GPIO_InitStructure.Mode = LL_GPIO_MODE_ALTERNATE;
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GPIO_InitStructure.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
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GPIO_InitStructure.Pull = LL_GPIO_PULL_UP;
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GPIO_InitStructure.Alternate = LL_GPIO_AF_12; // SDIO
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LL_GPIO_Init(SD_SDIO_DATA_GPIO, &GPIO_InitStructure);
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GPIO_InitStructure.Pin = SD_SDIO_CMD_GPIO_PIN;
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LL_GPIO_Init(SD_SDIO_CMD_GPIO, &GPIO_InitStructure);
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/* Configure PC.12 pin: CLK pin */
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GPIO_InitStructure.Pin = SD_SDIO_CLK_GPIO_PIN;
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GPIO_InitStructure.Pull = LL_GPIO_PULL_NO;
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LL_GPIO_Init(SD_SDIO_CLK_GPIO, &GPIO_InitStructure);
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// SDIO Interrupt ENABLE
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NVIC_SetPriority(SDIO_IRQn, 0);
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NVIC_EnableIRQ(SDIO_IRQn);
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// Init SDIO DMA instance
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sdioTxDma.Instance = SD_SDIO_DMA_STREAM;
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sdioTxDma.Init.Channel = SD_SDIO_DMA_CHANNEL;
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sdioTxDma.Init.PeriphInc = DMA_PINC_DISABLE;
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sdioTxDma.Init.MemInc = DMA_MINC_ENABLE;
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sdioTxDma.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
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sdioTxDma.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
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sdioTxDma.Init.Mode = DMA_PFCTRL;
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sdioTxDma.Init.Priority = DMA_PRIORITY_VERY_HIGH;
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sdioTxDma.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
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sdioTxDma.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
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sdioTxDma.Init.MemBurst = DMA_MBURST_INC4;
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sdioTxDma.Init.PeriphBurst = DMA_PBURST_INC4;
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stm32_dma_enable_clock(SD_SDIO_DMA);
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HAL_DMA_Init(&sdioTxDma);
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__HAL_LINKDMA(&sdio, hdmatx, sdioTxDma);
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__HAL_LINKDMA(&sdio, hdmarx, sdioTxDma);
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// DMA2 STREAMx Interrupt ENABLE
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NVIC_SetPriority(SD_SDIO_DMA_IRQn, 0);
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NVIC_EnableIRQ(SD_SDIO_DMA_IRQn);
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}
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static DSTATUS sdio_initialize(BYTE lun)
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{
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/* SDIO Peripheral Low Level Init */
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sdio_low_level_init();
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/*!< Configure the SDIO peripheral */
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/*!< SDIO_CK = SDIOCLK / (SDIO_TRANSFER_CLK_DIV + 2) */
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/*!< on STM32F4xx devices, SDIOCLK is fixed to 48MHz */
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sdio.Instance = SDIO;
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sdio.Init.ClockEdge = SDIO_CLOCK_EDGE_RISING;
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sdio.Init.ClockPowerSave = SDIO_CLOCK_POWER_SAVE_DISABLE;
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sdio.Init.ClockBypass = SDIO_CLOCK_BYPASS_DISABLE;
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sdio.Init.BusWide = SDIO_BUS_WIDE_1B;
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sdio.Init.HardwareFlowControl = SDIO_HARDWARE_FLOW_CONTROL_DISABLE;
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sdio.Init.ClockDiv = SD_SDIO_TRANSFER_CLK_DIV;
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HAL_SD_DeInit(&sdio);
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HAL_StatusTypeDef halStatus = HAL_SD_Init(&sdio);
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if (halStatus != HAL_OK) {
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TRACE("HAL_SD_Init() status=%d", halStatus);
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/*!< CMD Response TimeOut (wait for CMDSENT flag) */
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return STA_NOINIT;
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}
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HAL_SD_CardInfoTypeDef cardInfo;
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HAL_StatusTypeDef es = HAL_SD_GetCardInfo(&sdio, &cardInfo);
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if(es != HAL_OK) {
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return STA_NOINIT;
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}
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halStatus = HAL_SD_ConfigWideBusOperation(&sdio, SDIO_BUS_WIDE_4B);
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if (halStatus != HAL_OK) {
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TRACE("HAL_SD_ConfigWideBusOperation() status=%d", halStatus);
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} else {
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TRACE("SD Bus width successfully set to 4 bits");
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}
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TRACE("SD card info:");
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TRACE("type: %u", (uint32_t)(cardInfo.CardType));
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TRACE("class: %u", (uint32_t)(cardInfo.Class));
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TRACE("block nbr size: %u", (uint32_t)(cardInfo.BlockNbr));
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TRACE("block size: %u", (uint32_t)(cardInfo.BlockSize));
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return RES_OK;
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}
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// DMA scratch buffer used in case the input buffer is not aligned
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static uint8_t scratch[BLOCK_SIZE] __DMA;
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typedef enum
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{
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SD_TRANSFER_OK = 0,
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SD_TRANSFER_BUSY = 1,
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SD_TRANSFER_ERROR
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} SDTransferState;
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static SDTransferState sdio_check_card_state()
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{
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HAL_SD_CardStateTypeDef cardstate = HAL_SD_GetCardState(&sdio);
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if (cardstate == HAL_SD_CARD_TRANSFER) {
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return SD_TRANSFER_OK;
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}
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else if (cardstate == HAL_SD_CARD_ERROR) {
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return SD_TRANSFER_ERROR;
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}
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return SD_TRANSFER_BUSY;
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}
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static int sdio_check_card_state_with_timeout(uint32_t timeout)
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{
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uint32_t timer = HAL_GetTick();
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/* block until SDIO IP is ready again or a timeout occur */
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while(HAL_GetTick() - timer < timeout) {
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auto state = sdio_check_card_state();
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if (state != SD_TRANSFER_BUSY) {
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return state == SD_TRANSFER_OK ? 0 : -1;
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}
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}
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return -1;
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}
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static DSTATUS sdio_status(BYTE lun)
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{
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DSTATUS stat = RES_OK;
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#if defined(SD_PRESENT_GPIO)
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if ((LL_GPIO_ReadInputPort(SD_PRESENT_GPIO) & SD_PRESENT_LL_GPIO_PIN) != 0) {
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stat |= STA_NODISK;
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}
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#endif
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return stat;
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}
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static DRESULT _read_dma(BYTE* buff, DWORD sector, UINT count)
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{
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ReadStatus = 0;
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if (HAL_SD_ReadBlocks_DMA(&sdio, buff, sector, count) != HAL_OK) {
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TRACE("SD ReadBlocks failed (s:%u/c:%u)", sector, (uint32_t)count);
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return RES_ERROR;
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}
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// Wait for the reading process to complete or a timeout to occur
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uint32_t timeout = HAL_GetTick();
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while((ReadStatus == 0) && ((HAL_GetTick() - timeout) < SD_TIMEOUT));
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if (ReadStatus == 0) {
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TRACE("SD read timeout (s:%u c:%u)", sector, (uint32_t)count);
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return RES_ERROR;
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}
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ReadStatus = 0;
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return RES_OK;
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}
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static DRESULT sdio_read(BYTE lun, BYTE * buff, DWORD sector, UINT count)
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{
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DRESULT res = RES_OK;
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// TRACE("disk_read %d %p %10d %d", drv, buff, sector, count);
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if (sdio_check_card_state_with_timeout(SD_TIMEOUT) < 0) {
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return RES_ERROR;
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}
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if ((DWORD)buff < SRAM_BASE || ((DWORD)buff & 3)) {
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// TRACE("disk_read bad alignment (%p)", buff);
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while (count--) {
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res = _read_dma(scratch, sector++, 1);
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if (res != RES_OK) break;
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memcpy(buff, scratch, BLOCK_SIZE);
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buff += BLOCK_SIZE;
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}
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return res;
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}
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res = _read_dma(buff, sector, count);
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if (res != RES_OK) return res;
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uint32_t timeout = HAL_GetTick();
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while((HAL_GetTick() - timeout) < SD_TIMEOUT) {
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if (sdio_check_card_state() == SD_TRANSFER_OK) {
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return RES_OK;
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}
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}
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TRACE("SD getstatus timeout, s:%u c:%u", sector, (uint32_t)count);
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return RES_ERROR;
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}
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static DRESULT _write_dma(const BYTE *buff, DWORD sector, UINT count)
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{
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WriteStatus = 0;
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if (HAL_SD_WriteBlocks_DMA(&sdio, (uint8_t*)buff, sector, count) != HAL_OK) {
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TRACE("SD WriteBlocks failed (s:%u/c:%u)", sector, (uint32_t)count);
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return RES_ERROR;
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}
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// Wait that the writing process is completed or a timeout occurs
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uint32_t timeout = HAL_GetTick();
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while((WriteStatus == 0) && ((HAL_GetTick() - timeout) < SD_TIMEOUT));
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if (WriteStatus == 0) {
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TRACE("SD write timeout (s:%u/c:%u)", sector, (uint32_t)count);
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return RES_ERROR;
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}
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WriteStatus = 0;
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return RES_OK;
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}
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static DRESULT sdio_write(BYTE lun, const BYTE *buff, DWORD sector, UINT count)
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{
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DRESULT res = RES_OK;
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// TRACE("disk_write %d %p %10d %d", drv, buff, sector, count);
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if (sdio_check_card_state_with_timeout(SD_TIMEOUT) < 0) {
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return RES_ERROR;
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}
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if ((DWORD)buff < SRAM_BASE || ((DWORD)buff & 3)) {
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//TRACE("disk_write bad alignment (%p)", buff);
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while(count--) {
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memcpy(scratch, buff, BLOCK_SIZE);
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res = _write_dma((BYTE *)scratch, sector++, 1);
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if (res != RES_OK) break;
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buff += BLOCK_SIZE;
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if (sdio_check_card_state_with_timeout(SD_TIMEOUT) < 0) {
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return RES_ERROR;
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}
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}
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return res;
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}
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res = _write_dma(buff, sector, count);
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if (res != RES_OK) return res;
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uint32_t timeout = HAL_GetTick();
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while((HAL_GetTick() - timeout) < SD_TIMEOUT) {
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if (sdio_check_card_state() == SD_TRANSFER_OK) {
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return RES_OK;
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}
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}
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TRACE("SD getstatus timeout, s:%u c: %u", sector, (uint32_t)count);
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return RES_ERROR;
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}
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static DRESULT sdio_get_sector_count(DWORD* sectors)
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{
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HAL_SD_CardInfoTypeDef cardInfo;
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if(HAL_SD_GetCardInfo(&sdio, &cardInfo) != HAL_OK) {
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return RES_ERROR;
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}
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*sectors = cardInfo.LogBlockNbr;
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return RES_OK;
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}
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static DRESULT sdio_get_sector_size(DWORD* sector_size)
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{
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HAL_SD_CardInfoTypeDef cardInfo;
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if(HAL_SD_GetCardInfo(&sdio, &cardInfo) != HAL_OK) {
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return RES_ERROR;
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}
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*sector_size = cardInfo.LogBlockSize;
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return RES_OK;
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}
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static DRESULT sdio_get_block_size(DWORD* block_size)
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{
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DWORD sector_size;
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DRESULT res = sdio_get_sector_size(§or_size);
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if (res == RES_OK) {
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*block_size = sector_size / BLOCK_SIZE;
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}
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return res;
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}
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DRESULT sdio_ioctl(BYTE lun, BYTE ctrl, void *buff)
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{
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DRESULT res = RES_OK;
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switch (ctrl) {
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case GET_SECTOR_COUNT : /* Get number of sectors on the disk (DWORD) */
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res = sdio_get_sector_count((DWORD*)buff);
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break;
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case GET_SECTOR_SIZE : /* Get R/W sector size (WORD) */
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res = sdio_get_sector_size((DWORD*)buff);
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break;
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case GET_BLOCK_SIZE : /* Get erase block size in unit of sector (DWORD) */
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res = sdio_get_block_size((DWORD*)buff);
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break;
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case CTRL_SYNC:
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/* Complete pending write process */
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while (sdio_check_card_state() == SD_TRANSFER_BUSY);
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break;
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default:
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break;
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}
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return res;
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}
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const diskio_driver_t sdio_diskio_driver = {
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.initialize = sdio_initialize,
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.status = sdio_status,
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.read = sdio_read,
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.write = sdio_write,
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.ioctl = sdio_ioctl,
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};
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/**
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* @brief Tx Transfer completed callbacks
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* @param hsd: SD handle
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* @retval None
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*/
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extern "C" void HAL_SD_TxCpltCallback(SD_HandleTypeDef *hsd)
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{
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UNUSED(hsd);
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WriteStatus = 1;
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}
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/**
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* @brief Rx Transfer completed callbacks
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* @param hsd: SD handle
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* @retval None
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*/
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extern "C" void HAL_SD_RxCpltCallback(SD_HandleTypeDef *hsd)
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{
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UNUSED(hsd);
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ReadStatus = 1;
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}
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extern "C" void SDIO_IRQHandler(void)
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{
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DEBUG_INTERRUPT(INT_SDIO);
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HAL_SD_IRQHandler(&sdio);
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}
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extern "C" void SD_SDIO_DMA_IRQHANDLER(void)
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{
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DEBUG_INTERRUPT(INT_SDIO_DMA);
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HAL_DMA_IRQHandler(&sdioTxDma);
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}
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#endif
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