rtthread qspi w25q256 sfud
1.查询qspi配置过程
文件路径： /drivers/board.h
#define BSP_USING_QSPI //注释中详细描述了qspi配置过程
2.使能rtt qspi驱动
打开 RT-Thread Settings
选择SPI功能后，右键详细配置：分别勾
3.使能使用 qspi bsp
打开 /drivers/board.h
#define BSP_USING_QSPI
4.初始化qspi硬件
通过 stm32cubemx工具使能qspi硬件，在一下路径
\Core\Src\stm32f7xx_hal_msp.c中将HAL_QSPI_MspInit拷贝到 /drivers/board.c中
5.打开相应的HAL库
打开 /drivers/ stm32f7xx_hal_conf.h
使能 #define HAL_QSPI_MODULE_ENABLED
使能 #define HAL_SPI_MODULE_ENABLED
6.编译验证
烧录，在串口终端输入**>list_device 可以看到spi总线
7.挂载W25qspi设备
#include <rtthread.h> #include <rtdevice.h> #include <board.h> /** * 读取qspi状态寄存器2 * @param device : qspi设备 * @return */ char w25qxx_read_status_register2(struct rt_qspi_device *device) { /* 0x35 read status register2 */ char instruction = 0x35, status; rt_qspi_send_then_recv(device, &instruction, 1, &status, 1);//读取状态寄存器 return status; } /** * qspi写使能 * @param device : qspi设备 */ void w25qxx_write_enable(struct rt_qspi_device *device) { /* 0x06 write enable */ char instruction = 0x06; rt_qspi_send(device, &instruction, 1);//发送数据 } /** * 使能qspi模式 * @param device : qspi设备 */ void w25qxx_enter_qspi_mode(struct rt_qspi_device *device) { char status = 0; /* 0x38 enter qspi mode */ char instruction = 0x38; char write_status2_buf[2] = {0}; /* 0x31 write status register2 */ write_status2_buf[0] = 0x31; status = w25qxx_read_status_register2(device);//读取状态寄存器2 if (!(status & 0x02))//判读当前flash通信模式 { status |= 1 << 1; w25qxx_write_enable(device); //w25q写使能 write_status2_buf[1] = status; //写状态寄存器 rt_qspi_send(device, &write_status2_buf, 2);// rt_qspi_send(device, &instruction, 1);//设置qspi模式 rt_kprintf("flash already enter qspi mode\n"); rt_thread_mdelay(10); } } /** *挂在设备到qspi总线上 * @return 挂载状态 */ static rt_err_t rt_hw_qspi_flash_with_sfud_init(void) { /*W25Q256挂在qspi总线上*/ rt_err_t ret = stm32_qspi_bus_attach_device("qspi1", "qspi10", RT_NULL, 4, w25qxx_enter_qspi_mode, RT_NULL); if (ret != RT_EOK) { rt_kprintf("qspi attach device failed\n"); return -RT_ERROR; } rt_kprintf("qspi attach device success\n"); return RT_EOK; } /*设备自动初始化 */ INIT_DEVICE_EXPORT(rt_hw_qspi_flash_with_sfud_init); static int rt_hw_qspi_block_device_init(void) { /* W25Q256 注册为快设备*/ if (RT_NULL == rt_sfud_flash_probe("W25Q256", "qspi10")) { rt_kprintf("flash sfud failed\n"); return -RT_ERROR; } rt_kprintf("flash sfud success\n"); return RT_EOK; } /*设备自动初始化 */ INIT_DEVICE_EXPORT(rt_hw_qspi_block_device_init); #define W25Q_SPI_DEVICE_NAME "qspi10" static void qspi_w25q_sample(int argc, char *argv[]) { struct rt_spi_device *qspi_dev_w25q; char name[RT_NAME_MAX]; rt_uint8_t w25x_read_id = 0x90; rt_uint8_t id[5] = {0}; if (argc == 2) { rt_strncpy(name, argv[1], RT_NAME_MAX); } else { rt_strncpy(name, W25Q_SPI_DEVICE_NAME, RT_NAME_MAX); } /* 查找 spi 设备获取设备句柄 */ qspi_dev_w25q = (struct rt_spi_device *)rt_device_find(name);//根据 SPI 设备名称查找设备获取设备句柄 if (!qspi_dev_w25q) { rt_kprintf("qspi sample run failed! can't find %s device!\n", name); } else { /* 方式1：使用 rt_spi_send_then_recv()发送命令读取ID */ rt_qspi_send_then_recv(qspi_dev_w25q, &w25x_read_id, 1, id, 5);//先发送后接收数据id rt_kprintf("use rt_qspi_send_then_recv() read w25q ID is:%x%x\n", id[3], id[4]); } } /* 导出到 msh 命令列表中 */ MSH_CMD_EXPORT(qspi_w25q_sample, qspi w25q sample);
8.创建 快设备
9.挂载文件系统
使能 fatfs
打开 RT-Thread Settings
选择fatfs功能后，右键详细配置：分别勾选
static int mnt_init(void) { dfs_mkfs("elm", "W25Q256");//格式化设备 if(dfs_mount("W25Q256", "/", "elm", 0, 0)==0)//挂载文件 { rt_kprintf("dfs mount success\r\n"); return RT_EOK; }else { rt_kprintf("dfs mount failed\r\n"); return -RT_ERROR; } } /* 组件自动初始化 */ INIT_COMPONENT_EXPORT(mnt_init);
10.编译验证
烧录，在串口终端输入 ls
