STM32移植SFUD - 技术栈

简介

SFUD 是一款开源的串行 SPI Flash 通用驱动库。由于现有市面的串行 Flash 种类居多，各个 Flash 的规格及命令存在差异， SFUD 就是为了解决这些 Flash 的差异现状而设计，让我们的产品能够支持不同品牌及规格的 Flash，提高了涉及到 Flash 功能的软件的可重用性及可扩展性，同时也可以规避 Flash 缺货或停产给产品所带来的风险。

先看效果

初始化

c 复制代码

sfud_init();
sfud_flash *sfud_flash = sfud_get_device(SFUD_W25_DEVICE_INDEX);
sfud_device_init(sfud_flash);

随后可调用读写接口

c 复制代码

sfud_err sfud_read(const sfud_flash *flash, uint32_t addr, size_t size, uint8_t *data);
sfud_err sfud_erase(const sfud_flash *flash, uint32_t addr, size_t size);
sfud_err sfud_write(const sfud_flash *flash, uint32_t addr, size_t size, const uint8_t *data);
sfud_err sfud_erase_write(const sfud_flash *flash, uint32_t addr, size_t size, const uint8_t *data);

驱动成功日志

shell 复制代码

[SFUD]Start initialize Serial Flash Universal Driver(SFUD) V1.1.0.
[SFUD]You can get the latest version on https://github.com/armink/SFUD .
[SFUD]The flash device manufacturer ID is 0xEF, memory type ID is 0x40, capacity ID is 0x17.
[SFUD]Check SFDP header is OK. The reversion is V1.5, NPN is 0.
[SFUD]Check JEDEC basic flash parameter header is OK. The table id is 0, reversion is V1.5, length is 16, parameter table pointer is 0x000080.
[SFUD]JEDEC basic flash parameter table info:
[SFUD]MSB-LSB  3    2    1    0
[SFUD][0001] 0xFF 0xF9 0x20 0xE5
[SFUD][0002] 0x03 0xFF 0xFF 0xFF
[SFUD][0003] 0x6B 0x08 0xEB 0x44
[SFUD][0004] 0xBB 0x42 0x3B 0x08
[SFUD][0005] 0xFF 0xFF 0xFF 0xFE
[SFUD][0006] 0x00 0x00 0xFF 0xFF
[SFUD][0007] 0xEB 0x40 0xFF 0xFF
[SFUD][0008] 0x52 0x0F 0x20 0x0C
[SFUD][0009] 0x00 0x00 0xD8 0x10
[SFUD]4 KB Erase is supported throughout the device. Command is 0x20.
[SFUD]Write granularity is 64 bytes or larger.
[SFUD]Target flash status register is non-volatile.
[SFUD]3-Byte only addressing.
[SFUD]Capacity is 8388608 Bytes.
[SFUD]Flash device supports 4KB block erase. Command is 0x20.
[SFUD]Flash device supports 32KB block erase. Command is 0x52.
[SFUD]Flash device supports 64KB block erase. Command is 0xD8.
[SFUD]Found a Winbond flash chip. Size is 8388608 bytes.
[SFUD]Flash device reset success.
[SFUD]W25Q64JV flash device initialized successfully.
[SFUD]Found a Winbond flash chip. Size is 8388608 bytes.
[SFUD]Flash device reset success.
[SFUD]W25Q64JV flash device initialized successfully.

移植

移植时只需要适配SPI/QSPI接口即可，本文使用的是STM32H750+QSPI HAL库

将sfud文件夹添加到工程中（源代码和头文件路径）

shel 复制代码

├─sfud
   ├─inc
   ├─port
   └─src

修改sfud_cfg.h

添加flash列表

c 复制代码

enum {
    SFUD_W25_DEVICE_INDEX = 0,
};

#define SFUD_FLASH_DEVICE_TABLE                                                \
{                                                                              \
    [SFUD_W25_DEVICE_INDEX] = {.name = "W25Q64JV", .spi.name = "QSPI1"},       \
}

修改sfud_port.c

源代码如下，其中主要适配SPI的读写

c 复制代码

#include "quadspi.h"
#include <sfud.h>
#include <stdarg.h>

static char log_buf[256];
void sfud_log_debug(const char *file, const long line, const char *format, ...);
void sfud_log_info(const char *format, ...);

static void spi_lock(const sfud_spi *spi)
{
    __disable_irq();
}

static void spi_unlock(const sfud_spi *spi)
{
    __enable_irq();
}

/**
 * This function can send or send then receive QSPI data.
 */
sfud_err qspi_send_then_recv(const void *send_buf, size_t send_length, void *recv_buf, size_t recv_length)
{
    QSPI_CommandTypeDef Cmdhandler;
    unsigned char *ptr = (unsigned char *)send_buf;
    size_t count = 0;
    sfud_err result = SFUD_SUCCESS;

    /* get instruction */
    Cmdhandler.Instruction = ptr[0];
    Cmdhandler.InstructionMode = QSPI_INSTRUCTION_1_LINE;
    count++;

    /* get address */
    if (send_length > 1)
    {
        if (send_length >= 4)
        {
            /* address size is 3 Byte */
            Cmdhandler.Address = (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
            Cmdhandler.AddressSize = QSPI_ADDRESS_24_BITS;
            count += 3;
        }
        else
        {
            return SFUD_ERR_READ;
        }
        Cmdhandler.AddressMode = QSPI_ADDRESS_1_LINE;
    }
    else
    {
        /* no address stage */
        Cmdhandler.Address = 0;
        Cmdhandler.AddressMode = QSPI_ADDRESS_NONE;
        Cmdhandler.AddressSize = 0;
    }

    Cmdhandler.AlternateBytes = 0;
    Cmdhandler.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE;
    Cmdhandler.AlternateBytesSize = 0;

    Cmdhandler.SIOOMode = QSPI_SIOO_INST_EVERY_CMD;
    Cmdhandler.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE;
    Cmdhandler.DdrMode = QSPI_DDR_MODE_DISABLE;
    Cmdhandler.DdrHoldHalfCycle = QSPI_DDR_HHC_ANALOG_DELAY;

    if (send_buf && recv_buf)
    {
        /* recv data */
        /* set dummy cycles */
        if (count != send_length)
        {
            Cmdhandler.DummyCycles = (send_length - count) * 8;
        }
        else
        {
            Cmdhandler.DummyCycles = 0;
        }

        /* set recv size */
        Cmdhandler.DataMode = QSPI_DATA_1_LINE;
        Cmdhandler.NbData = recv_length;
        HAL_QSPI_Command(&hqspi, &Cmdhandler, 5000);

        if (recv_length != 0)
        {
            if (HAL_QSPI_Receive(&hqspi, recv_buf, 5000) != HAL_OK)
            {
                sfud_log_info("qspi recv data failed(%d)!", hqspi.ErrorCode);
                hqspi.State = HAL_QSPI_STATE_READY;
                result = SFUD_ERR_READ;
            }
        }

        return result;
    }
    else
    {
        /* send data */
        /* set dummy cycles */
        Cmdhandler.DummyCycles = 0;

        /* determine if there is data to send */
        if (send_length - count > 0)
        {
            Cmdhandler.DataMode = QSPI_DATA_1_LINE;
        }
        else
        {
            Cmdhandler.DataMode = QSPI_DATA_NONE;
        }

        /* set send buf and send size */
        Cmdhandler.NbData = send_length - count;
        HAL_QSPI_Command(&hqspi, &Cmdhandler, 5000);

        if (send_length - count > 0)
        {
            if (HAL_QSPI_Transmit(&hqspi, (uint8_t *)(ptr + count), 5000) != HAL_OK)
            {
                sfud_log_info("qspi send data failed(%d)!", hqspi.ErrorCode);
                hqspi.State = HAL_QSPI_STATE_READY;
                result = SFUD_ERR_WRITE;
            }
        }

        return result;
    }
}

/**
 * SPI write data then read data
 */
static sfud_err spi_write_read(const sfud_spi *spi, const uint8_t *write_buf, size_t write_size, uint8_t *read_buf,
                               size_t read_size)
{
    sfud_err result = SFUD_SUCCESS;

    if (write_size && read_size)
    {
        /* read data */
        qspi_send_then_recv(write_buf, write_size, read_buf, read_size);
    }
    else if (write_size)
    {
        /* send data */
        qspi_send_then_recv(write_buf, write_size, NULL, NULL);
    }

    return result;
}

#ifdef SFUD_USING_QSPI
/**
 * read flash data by QSPI
 */
static sfud_err qspi_read(const struct __sfud_spi *spi, uint32_t addr, sfud_qspi_read_cmd_format *qspi_read_cmd_format,
                          uint8_t *read_buf, size_t read_size)
{
    sfud_err result = SFUD_SUCCESS;
    QSPI_CommandTypeDef Cmdhandler;
    extern QSPI_HandleTypeDef hqspi;

    /* set cmd struct */
    Cmdhandler.Instruction = qspi_read_cmd_format->instruction;
    if(qspi_read_cmd_format->instruction_lines == 0)
    {
        Cmdhandler.InstructionMode = QSPI_INSTRUCTION_NONE;
    }else if(qspi_read_cmd_format->instruction_lines == 1)
    {
        Cmdhandler.InstructionMode = QSPI_INSTRUCTION_1_LINE;
    }else if(qspi_read_cmd_format->instruction_lines == 2)
    {
        Cmdhandler.InstructionMode = QSPI_INSTRUCTION_2_LINES;
    }else if(qspi_read_cmd_format->instruction_lines == 4)
    {
        Cmdhandler.InstructionMode = QSPI_INSTRUCTION_4_LINES;
    }
    
    Cmdhandler.Address = addr;
    Cmdhandler.AddressSize = QSPI_ADDRESS_24_BITS;
    if(qspi_read_cmd_format->address_lines == 0)
    {
        Cmdhandler.AddressMode = QSPI_ADDRESS_NONE;
    }else if(qspi_read_cmd_format->address_lines == 1)
    {
        Cmdhandler.AddressMode = QSPI_ADDRESS_1_LINE;
    }else if(qspi_read_cmd_format->address_lines == 2)
    {
        Cmdhandler.AddressMode = QSPI_ADDRESS_2_LINES;
    }else if(qspi_read_cmd_format->address_lines == 4)
    {
        Cmdhandler.AddressMode = QSPI_ADDRESS_4_LINES;
    }

    Cmdhandler.AlternateBytes = 0;
    Cmdhandler.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE;
    Cmdhandler.AlternateBytesSize = 0;

    Cmdhandler.DummyCycles = qspi_read_cmd_format->dummy_cycles;

    Cmdhandler.NbData = read_size;
    if(qspi_read_cmd_format->data_lines == 0)
    {
        Cmdhandler.DataMode = QSPI_DATA_NONE;
    }else if(qspi_read_cmd_format->data_lines == 1)
    {
        Cmdhandler.DataMode = QSPI_DATA_1_LINE;
    }else if(qspi_read_cmd_format->data_lines == 2)
    {
        Cmdhandler.DataMode = QSPI_DATA_2_LINES;
    }else if(qspi_read_cmd_format->data_lines == 4)
    {
        Cmdhandler.DataMode = QSPI_DATA_4_LINES;
    }

    Cmdhandler.SIOOMode = QSPI_SIOO_INST_EVERY_CMD;
    Cmdhandler.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE;
    Cmdhandler.DdrMode = QSPI_DDR_MODE_DISABLE;
    Cmdhandler.DdrHoldHalfCycle = QSPI_DDR_HHC_ANALOG_DELAY;
    HAL_QSPI_Command(&hqspi, &Cmdhandler, 5000);

    if (HAL_QSPI_Receive(&hqspi, read_buf, 5000) != HAL_OK)
    {
        sfud_log_info("qspi recv data failed(%d)!", hqspi.ErrorCode);
        hqspi.State = HAL_QSPI_STATE_READY;
        result = SFUD_ERR_READ;
    }

    return result;
}
#endif /* SFUD_USING_QSPI */

/* about 100 microsecond delay */
static void retry_delay_100us(void)
{
    uint32_t delay = 2400;
    while (delay--)
        ;
}

sfud_err sfud_spi_port_init(sfud_flash *flash)
{
    sfud_err result = SFUD_SUCCESS;

    switch (flash->index)
    {
    case SFUD_W25_DEVICE_INDEX: {
        /* set the interfaces and data */
        flash->spi.wr = spi_write_read;
        flash->spi.qspi_read = qspi_read;
        flash->spi.lock = spi_lock;
        flash->spi.unlock = spi_unlock;
        // flash->spi.user_data = &spi1;
        /* about 100 microsecond delay */
        flash->retry.delay = retry_delay_100us;
        /* adout 60 seconds timeout */
        flash->retry.times = 60 * 10000;

        break;
    }
    }

    return result;
}

#include "rtthread.h"

/**
 * This function is print debug info.
 *
 * @param file the file which has call this function
 * @param line the line number which has call this function
 * @param format output format
 * @param ... args
 */
void sfud_log_debug(const char *file, const long line, const char *format, ...)
{
    va_list args;

    /* args point to the first variable parameter */
    va_start(args, format);
    //rt_kprintf("[SFUD](%s:%ld) ", file, line);
    rt_kprintf("[SFUD]");
    /* must use vprintf to print */
    vsnprintf(log_buf, sizeof(log_buf), format, args);
    rt_kprintf("%s\n", log_buf);
    va_end(args);
}

/**
 * This function is print routine info.
 *
 * @param format output format
 * @param ... args
 */
void sfud_log_info(const char *format, ...)
{
    va_list args;

    /* args point to the first variable parameter */
    va_start(args, format);
    rt_kprintf("[SFUD]");
    /* must use vprintf to print */
    vsnprintf(log_buf, sizeof(log_buf), format, args);
    rt_kprintf("%s\n", log_buf);
    va_end(args);
}