一、RT-Thread-W25Q64-SPI配置一SPI配置1、创建工程后打开设置使能SPI2、修改board.h头文件内容3、打开stm32cube-使能对应SPI通道引脚根据所使用的SPI通道进行设置W25Q64使用SPI2,相关设置如下所示4、生成代码关闭stm32cubemx修改stm32f4xx_hal_config_bak.h文件如框选所示使能 SPI 外设模块的宏定义5、将生成的SPI初始化函数复制到board.c文件末尾原来文件中函数的内容注释掉将复制的SPI初始化函数粘贴到board.c文件中末尾如下图所示随后将原来文件中的初始化函数注释掉二读取W25Q64SPI片选W25Q64芯片挂载设备struct rt_spi_device *spi_w25q64; //片选SPI和挂载W25Q64 void spi_init() { struct rt_spi_configuration cfg; //先把w25qxx挂载在SPI2总线上(pb12是W25Q的片选引脚) rt_hw_spi_device_attach(spi2, spi20, GPIOB, GPIO_PIN_12); //查找设备 spi_w25q64(struct rt_spi_device *)rt_device_find(spi20); if(spi_w25q64RT_NULL){ rt_kprintf(spi_w25q find failed...\n); } else { rt_kprintf(spi_w25q find success...\n); } //配置w25q-spi模式 cfg.data_width8; cfg.modeRT_SPI_MODE_3|RT_SPI_MASTER|RT_SPI_MSB;//模式3主机高位先行 cfg.max_hz5*1000*1000;//5M rt_spi_configure(spi_w25q64, cfg); //此时可以查看设备是否已注册 } MSH_CMD_EXPORT(spi_init,spi bus);读取设备ID指令0x90方法一//读取id方法1 void spi_read_id1() { rt_uint8_t id[5]{0};// struct rt_spi_message msg1,msg2; rt_uint8_t w25_read_id0x90;//读取ID指令 msg1.send_bufw25_read_id; msg1.recv_bufRT_NULL; msg1.length1; msg1.cs_take1; msg1.cs_release0; msg1.nextmsg2; msg2.send_bufRT_NULL; msg2.recv_bufid; msg2.length5; msg2.cs_take0; msg2.cs_release1; msg2.nextRT_NULL; //制造商0XEF 设备IDxx rt_spi_transfer_message(spi_w25q64, msg1); rt_kprintf(w25q128 ID is %x%x \n,id[3],id[4]); } MSH_CMD_EXPORT(spi_read_id1,spi_read_id);方法二//读取id方法2 //先发送后接收数据函数 //rt_spi_send_then_recv(device, send_buf, send_length, recv_buf, recv_length) void spi_read_id2() { rt_uint8_t id[5]{0}; //存储id rt_uint8_t w25_read_id0x90;//读取ID指令 rt_spi_send_then_recv(spi_w25q64, w25_read_id, 1, id, 5); rt_kprintf(w25q128 ID is %x%x \n,id[3],id[4]); } MSH_CMD_EXPORT(spi_read_id2,spi_read_id);完整代码如下所示#includertthread.h #includertdevice.h #includedrv_spi.h #includedrivers/spi.h struct rt_spi_device *spi_w25q64; //片选SPI和挂载W25Q64 void spi_init() { struct rt_spi_configuration cfg; //先把w25qxx挂载在SPI2总线上(pb12是W25Q的片选引脚) rt_hw_spi_device_attach(spi2, spi20, GPIOB, GPIO_PIN_12); //查找设备 spi_w25q64(struct rt_spi_device *)rt_device_find(spi20); if(spi_w25q64RT_NULL){ rt_kprintf(spi_w25q find failed...\n); } else { rt_kprintf(spi_w25q find success...\n); } //配置w25q-spi模式 cfg.data_width8; cfg.modeRT_SPI_MODE_3|RT_SPI_MASTER|RT_SPI_MSB;//模式3主机高位先行 cfg.max_hz5*1000*1000;//5M rt_spi_configure(spi_w25q64, cfg); //此时可以查看设备是否已注册 } MSH_CMD_EXPORT(spi_init,spi bus); //读取id方法1 void spi_read_id1() { rt_uint8_t id[5]{0};// struct rt_spi_message msg1,msg2; rt_uint8_t w25_read_id0x90;//读取ID指令 msg1.send_bufw25_read_id; msg1.recv_bufRT_NULL; msg1.length1; msg1.cs_take1; msg1.cs_release0; msg1.nextmsg2; msg2.send_bufRT_NULL; msg2.recv_bufid; msg2.length5; msg2.cs_take0; msg2.cs_release1; msg2.nextRT_NULL; //制造商0XEF 设备IDxx rt_spi_transfer_message(spi_w25q64, msg1); rt_kprintf(w25q128 ID is %x%x \n,id[3],id[4]); } MSH_CMD_EXPORT(spi_read_id1,spi_read_id); //读取id方法2 //先发送后接收数据函数 //rt_spi_send_then_recv(device, send_buf, send_length, recv_buf, recv_length) void spi_read_id2() { rt_uint8_t id[5]{0}; //存储id rt_uint8_t w25_read_id0x90;//读取ID指令 rt_spi_send_then_recv(spi_w25q64, w25_read_id, 1, id, 5); rt_kprintf(w25q128 ID is %x%x \n,id[3],id[4]); } MSH_CMD_EXPORT(spi_read_id2,spi_read_id);编译运行结果二、W25Q64SFUD一增加SFUD配置在第一章节一SPI配置基础上增加二编写代码SPI片选SFUD探测初始化int w25q_sfud_test() { //片选挂载设备 // rt_hw_spi_device_attach(bus_name, device_name, cs_gpiox, cs_gpio_pin) rt_hw_spi_device_attach(spi2, spi20, GPIOB, GPIO_PIN_12); //探测设备 // rt_sfud_flash_probe(spi_flash_dev_name, spi_dev_name) //使用sfud探测spi20设备并将spi20连接的flash初始化为块设备名称w25q128 if(rt_sfud_flash_probe(W25Q64, spi20)RT_NULL) { rt_kprintf(w25q64 prob failed...\n); return -RT_ERROR; } return RT_EOK; } MSH_CMD_EXPORT(w25q_sfud_test,sfub test);写入数据和读取数据测试sfud_flash_t test_sfud; int w25q_read_write_test() { const uint8_t test_data[]this is w25q sfud test data!; uint8_t read_data[50]{0}; //获取设备句柄 /* * 使用 rt_sfud_flash_find 或者 rt_sfud_flash_find_by_dev_name 获取设备句柄 */ //test_sfudrt_sfud_flash_find(spi20); test_sfudrt_sfud_flash_find_by_dev_name(W25Q64); if(test_sfudRT_NULL) { rt_kprintf(find sufd_flash failed...\n); return -RT_ERROR; } else { rt_kprintf(find sufd_flash success...\n); } //调用API进行读写操作 //写flash rt_kprintf(write flash...\n); // sfud_write(flash, addr, size, data) // sfud_erase_write(flash, addr, size, data) // sfud_write(test_sfud, 13, sizeof(test_data), test_data); sfud_erase_write(test_sfud, 13, sizeof(test_data), test_data); //读flash rt_kprintf(read flash...\n); sfud_read(test_sfud, 13, sizeof(test_data), read_data); rt_kprintf(read data:%s...\n,read_data); } MSH_CMD_EXPORT(w25q_read_write_test,sfub read write test);