415 lines
10 KiB
C
415 lines
10 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020-07-04 thread-liu the first version
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*/
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#include "board.h"
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#if defined(BSP_USING_SDCARD)
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#include <dfs_fs.h>
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#define DRV_DEBUG
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//#define SDMMC_TX_DUMP
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//#define SDMMC_RX_DUMP
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#define LOG_TAG "drv.sdmmc"
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#include <drv_log.h>
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static SD_HandleTypeDef SDCARD_Handler = {0};
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static HAL_SD_CardInfoTypeDef SDCardInfo = {0};
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struct stm32_sd
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{
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struct rt_device sdcard;
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struct rt_semaphore sd_lock;
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volatile rt_uint8_t write_flage;
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volatile rt_uint8_t read_flage;
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volatile rt_base_t level;
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};
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static struct stm32_sd sd_device;
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#define SD_TIMEOUT ((uint32_t)30 * 1000)
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#define DETECT_PIN GET_PIN(G, 1)
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#define LDO_PIN GET_PIN(F, 14)
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struct rt_completion tx_comp;
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struct rt_completion rx_comp;
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/* SYSRAM SDMMC1/2 accesses */
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#define SDIO_BUFF_SIZE 512
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#define SDCARD_ADDR 0x2FFC0000
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#if defined(__ARMCC_VERSION)
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__attribute__((at(SDCARD_ADDR))) static rt_uint32_t cache_buf[SDIO_BUFF_SIZE];
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#elif defined ( __GNUC__ )
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static rt_uint32_t cache_buf[SDIO_BUFF_SIZE] __attribute__((section(".SdCardSection")));
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#elif defined(__ICCARM__)
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#pragma location = SDCARD_ADDR
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__no_init static rt_uint32_t cache_buf[SDIO_BUFF_SIZE];
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#endif
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#if defined(SDMMC_RX_DUMP) || defined(SDMMC_TX_DUMP)
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#define __is_print(ch) ((unsigned int)((ch) - ' ') < 127u - ' ')
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static void dump_hex(const rt_uint8_t *ptr, rt_size_t buflen)
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{
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unsigned char *buf = (unsigned char *)ptr;
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int i, j;
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for (i = 0; i < buflen; i += 16)
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{
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rt_kprintf("%08X: ", i);
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for (j = 0; j < 16; j++)
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if (i + j < buflen)
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rt_kprintf("%02X ", buf[i + j]);
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else
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rt_kprintf(" ");
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rt_kprintf(" ");
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for (j = 0; j < 16; j++)
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if (i + j < buflen)
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rt_kprintf("%c", __is_print(buf[i + j]) ? buf[i + j] : '.');
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rt_kprintf("\n");
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}
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}
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#endif
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static rt_err_t rt_hw_sd_is_detected(void)
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{
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return rt_pin_read(DETECT_PIN);
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}
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static rt_err_t rt_hw_sd_init(void)
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{
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/* sd ldo*/
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rt_pin_mode(LDO_PIN, PIN_MODE_OUTPUT);
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/* sd detect */
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rt_pin_mode(DETECT_PIN, PIN_MODE_INPUT_PULLUP);
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/* judge we have a sd card */
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if (rt_hw_sd_is_detected() != 0x00)
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{
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LOG_E("can't find sd card!");
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return RT_ERROR;
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}
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SDCARD_Handler.Instance = SDMMC1;
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HAL_SD_DeInit(&SDCARD_Handler);
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/* if CLKDIV = 0 then SDMMC Clock frequency = SDMMC Kernel Clock
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else SDMMC Clock frequency = SDMMC Kernel Clock / [2 * CLKDIV].
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SDMMC Kernel Clock = 99MHz, SDMMC Clock frequency = 50MHz */
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SDCARD_Handler.Init.ClockDiv = 1;
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SDCARD_Handler.Init.ClockPowerSave = SDMMC_CLOCK_POWER_SAVE_DISABLE;
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SDCARD_Handler.Init.ClockEdge = SDMMC_CLOCK_EDGE_FALLING;
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SDCARD_Handler.Init.HardwareFlowControl = SDMMC_HARDWARE_FLOW_CONTROL_DISABLE;
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SDCARD_Handler.Init.BusWide = SDMMC_BUS_WIDE_4B;
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if (HAL_SD_Init(&SDCARD_Handler) != RT_EOK)
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{
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LOG_E("sd device init error!");
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return RT_ERROR;
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}
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if (HAL_SD_ConfigWideBusOperation(&SDCARD_Handler, SDMMC_BUS_WIDE_4B) != RT_EOK)
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{
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LOG_E("sd bus config error!");
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return RT_ERROR;
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}
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if (HAL_SD_GetCardInfo(&SDCARD_Handler, &SDCardInfo) != RT_EOK)
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{
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LOG_E("sd get card info error!");
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return RT_ERROR;
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}
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rt_thread_mdelay(100);
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if(HAL_SD_GetCardState(&SDCARD_Handler) != HAL_SD_CARD_TRANSFER)
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{
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LOG_E("sd get card state error!");
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return RT_ERROR;
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}
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return RT_EOK;
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}
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static void rt_hw_sd_deinit(void)
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{
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HAL_SD_DeInit(&SDCARD_Handler);
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}
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static rt_err_t sdcard_wait_ok(void)
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{
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rt_uint32_t tick_start = 0;
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tick_start = rt_tick_get();
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while ((rt_tick_get() - tick_start) < SD_TIMEOUT)
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{
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if (HAL_SD_GetCardState(&SDCARD_Handler) == HAL_SD_CARD_TRANSFER)
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{
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return HAL_OK;
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}
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}
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return HAL_ERROR;
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}
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void HAL_SD_DriveTransceiver_1_8V_Callback(FlagStatus status)
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{
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if (status == SET)
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{
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rt_pin_write(LDO_PIN, PIN_HIGH);
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}
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else
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{
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rt_pin_write(LDO_PIN, PIN_LOW);
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}
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}
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static rt_err_t rt_sdcard_init(rt_device_t dev)
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{
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RT_ASSERT(dev != RT_NULL);
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struct stm32_sd *sd = (struct stm32_sd *)dev;
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if (rt_sem_init(&sd->sd_lock, "sdlock", 1, RT_IPC_FLAG_FIFO) != RT_EOK)
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{
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LOG_E("init sd lock semaphore failed\n");
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}
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return RT_EOK;
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}
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static rt_err_t rt_sdcard_open(rt_device_t dev, rt_uint16_t oflag)
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{
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RT_ASSERT(dev != RT_NULL);
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return RT_EOK;
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}
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static rt_err_t rt_sdcard_close(rt_device_t dev)
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{
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RT_ASSERT(dev != RT_NULL);
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return RT_EOK;
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}
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/**
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* @brief Reads Sector(s)
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* @param dev : sd dev
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* @param sector: Sector address (LBA) Data buffer to store read data
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* @param *buffer: Data buffer to store read data
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* @param count: Number of sectors to read (1..128)
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* @retval DRESULT: Operation result
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*/
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static rt_size_t rt_sdcard_read(rt_device_t dev, rt_off_t sector, void *buffer, rt_size_t count)
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{
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RT_ASSERT(dev != RT_NULL);
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struct stm32_sd *sd = (struct stm32_sd *)dev;
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rt_uint8_t ret = RT_EOK;
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volatile uint32_t tickstart = 0;
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sd->read_flage = 0;
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rt_memset(cache_buf, 0x00, BLOCKSIZE * count);
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ret = sdcard_wait_ok();
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if (ret != RT_EOK)
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{
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LOG_D("sdmmc busy!");
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return 0;
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}
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rt_sem_take(&sd->sd_lock, RT_WAITING_FOREVER);
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ret = HAL_SD_ReadBlocks_DMA(&SDCARD_Handler, (rt_uint8_t *)cache_buf, (uint32_t)sector, count);
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rt_sem_release(&sd->sd_lock);
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/* Wait that writing process is completed or a timeout occurs */
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tickstart = rt_tick_get();
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if (ret == HAL_OK)
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{
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while ((sd->read_flage == 0) && (rt_tick_get() - tickstart) < SD_TIMEOUT)
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{
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}
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/* over time */
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if (sd->read_flage == 0)
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{
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return 0;
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}
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else
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{
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sd->read_flage = 0;
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tickstart = rt_tick_get();
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while ((rt_tick_get() - tickstart) < SD_TIMEOUT)
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{
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if (sdcard_wait_ok() == RT_EOK)
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{
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sd->level=rt_hw_interrupt_disable();
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rt_memcpy((rt_uint8_t *)(buffer), cache_buf, BLOCKSIZE * count);
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rt_hw_interrupt_enable(sd->level);
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#if defined(SDMMC_RX_DUMP)
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rt_kprintf("\nsd rx: \n");
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dump_hex(cache_buf, BLOCKSIZE * count);
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#endif
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return count;
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}
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}
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}
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}
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return 0;
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}
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/**
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* @brief Writes block(s) to a specified address in an SD card, in DMA mode.
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* @param dev SD device
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* @param sector Block index from where data is to be written P
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* @param *buffer Pointer to the buffer that will contain the data to transmit
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* @param count Number of SD blocks to write
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* @retval BSP status
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*/
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static rt_size_t rt_sdcard_write(rt_device_t dev, rt_off_t sector, const void *buffer, rt_size_t count)
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{
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RT_ASSERT(dev != RT_NULL);
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struct stm32_sd *sd = (struct stm32_sd *)dev;
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rt_uint32_t i = 0;
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rt_uint8_t ret = RT_EOK;
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for (i = 0; i < count; i++)
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{
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sd->level = rt_hw_interrupt_disable();
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rt_memset(cache_buf, 0x00, BLOCKSIZE);
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rt_memcpy(cache_buf, (rt_uint32_t *)((uintptr_t)buffer + BLOCKSIZE * i), BLOCKSIZE);
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rt_hw_interrupt_enable(sd->level);
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#if defined(SDMMC_TX_DUMP)
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rt_kprintf("\nsd tx: \n");
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dump_hex(cache_buf, BLOCKSIZE);
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#endif
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ret = sdcard_wait_ok();
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if (ret != RT_EOK)
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{
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LOG_D("sdmmc busy!");
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return 0;
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}
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rt_completion_init(&tx_comp);
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ret = HAL_SD_WriteBlocks_DMA(&SDCARD_Handler, (rt_uint8_t *)cache_buf, (rt_uint32_t)(sector + i), 1);
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if (ret != HAL_OK)
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{
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rt_kprintf("sd write error!\n");
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return 0;
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}
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rt_completion_wait(&tx_comp,RT_WAITING_FOREVER);
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}
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return count;
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}
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static rt_err_t rt_sdcard_control(rt_device_t dev, int cmd, void *args)
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{
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RT_ASSERT(dev != RT_NULL);
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if (cmd == RT_DEVICE_CTRL_BLK_GETGEOME)
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{
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struct rt_device_blk_geometry *geometry;
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geometry = (struct rt_device_blk_geometry *)args;
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geometry->bytes_per_sector = 512;
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geometry->block_size = SDCARD_Handler.SdCard.BlockSize;
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geometry->sector_count = SDCARD_Handler.SdCard.BlockNbr;
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}
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return RT_EOK;
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}
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void SDMMC1_IRQHandler(void)
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{
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rt_interrupt_enter();
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HAL_SD_IRQHandler(&SDCARD_Handler);
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rt_interrupt_leave();
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}
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void HAL_SD_RxCpltCallback(SD_HandleTypeDef *hsd)
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{
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if (hsd->Instance == SDCARD_Handler.Instance)
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{
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sd_device.read_flage = 1;
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}
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}
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void HAL_SD_TxCpltCallback(SD_HandleTypeDef *hsd)
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{
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if (hsd->Instance == SDCARD_Handler.Instance)
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{
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rt_completion_done(&tx_comp);
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}
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}
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int rt_hw_sdcard_init(void)
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{
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if (rt_hw_sd_init() != RT_EOK)
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{
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rt_hw_sd_deinit();
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LOG_E("sdcard init failed");
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return RT_ERROR;
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}
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/* register sdcard device */
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sd_device.sdcard.type = RT_Device_Class_Block;
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sd_device.sdcard.init = rt_sdcard_init;
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sd_device.sdcard.open = rt_sdcard_open;
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sd_device.sdcard.close = rt_sdcard_close;
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sd_device.sdcard.read = rt_sdcard_read;
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sd_device.sdcard.write = rt_sdcard_write;
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sd_device.sdcard.control = rt_sdcard_control;
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/* no private */
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sd_device.sdcard.user_data = &SDCardInfo;
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rt_device_register(&sd_device.sdcard, "sd_card", RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
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LOG_I("sd card init success!");
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return RT_EOK;
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}
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INIT_DEVICE_EXPORT(rt_hw_sdcard_init);
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#if defined(BSP_USING_SDCARD_FS)
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int mnt_init(void)
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{
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rt_device_t sd_dev = RT_NULL;
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LOG_I("init sd card file system.");
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#if defined(SDMMC_RX_DUMP) || defined(SDMMC_TX_DUMP)
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rt_thread_delay(3000);
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#else
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rt_thread_delay(RT_TICK_PER_SECOND);
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#endif
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sd_dev = rt_device_find("sd_card");
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if (sd_dev == RT_NULL)
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{
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LOG_E("can't find sd deivce name!");
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return RT_ERROR;
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}
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if (dfs_mount("sd_card", "/", "elm", 0, 0) != 0)
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{
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rt_kprintf("file system mount failed!\n");
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}
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else
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{
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rt_kprintf("file system mount success!\n");
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}
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return 0;
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}
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INIT_APP_EXPORT(mnt_init);
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#endif
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#endif
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