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--- icore4trtt_5 [2020/11/05 15:15]
zgf [六、源代码]
+++ icore4trtt_5 [2022/04/01 11:09] (当前版本)
sean
@@ 行 2: / 行 2: @@
 |技术支持电话|**0379-69926675-801**|||
 |技术支持邮件|Gingko@vip.163.com|||
-|技术论坛|http://www.eeschool.org|||
 ^  版本  ^  日期  ^  作者  ^  修改内容  ^
 |  V1.0  |  2020-02-29  |  zh.  |  初次建立  |
@@ 行 34: / 行 33: @@
   * 5.1 修改kconfig文件，在menuconfig中添加配置W25Q64的选项。
 {{ :icore4t:iCore4T_RTT_5_7.png?direct |}}
-  * 5.2 添加w25q64的驱动程序drv_qspi_flash.c文件，并将该文件放在../bsp/stm32/libraries/HAL_Drivers，我把源码贴在下面
+  * 5.2 添加w25q64的驱动程序drv_qspi_flash.c文件，并将该文件放在../bsp/stm32/libraries/HAL_Drivers，我把源码贴在下面。
+<code>
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018-11-27     zylx         first version
+ */
+#include <board.h>
+#include <drv_qspi.h>
+#include <rtdevice.h>
+#include <rthw.h>
+#include <finsh.h>
+#ifdef BSP_USING_QSPI_FLASH
+#include "spi_flash.h"
+#include "spi_flash_sfud.h"
+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);
+    return status;
+}
+void w25qxx_write_enable(struct rt_qspi_device *device)
+{
+    /* 0x06 write enable */
+    char instruction = 0x06;
+    rt_qspi_send(device, &instruction, 1);
+}
+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);
+    if (!(status & 0x02))
+    {
+        status |= 1 << 1;
+        w25qxx_write_enable(device);
+        write_status2_buf[1] = status;
+        rt_qspi_send(device, &write_status2_buf, 2);
+        rt_qspi_send(device, &instruction, 1);
+        rt_kprintf("flash already enter qspi mode\n");
+        rt_thread_mdelay(10);
+    }
+}
+static int rt_hw_qspi_flash_with_sfud_init(void)
+{
+    stm32_qspi_bus_attach_device("qspi1", "qspi10", RT_NULL, 4, w25qxx_enter_qspi_mode, RT_NULL);
+    /* init w25q64 */
+    if (RT_NULL == rt_sfud_flash_probe("W25Q64", "qspi10"))
+    {
+        return -RT_ERROR;
+    }
+    return RT_EOK;
+}
+INIT_COMPONENT_EXPORT(rt_hw_qspi_flash_with_sfud_init);
+#if defined(RT_USING_DFS_ELMFAT) && !defined(BSP_USING_SDCARD)
+#include <dfs_fs.h>
+#define BLK_DEV_NAME  "W25Q64"
+int mnt_init(void)
+{
+    rt_thread_delay(RT_TICK_PER_SECOND);
+    if (dfs_mount(BLK_DEV_NAME, "/", "elm", 0, 0) == 0)
+    {
+        rt_kprintf("file system initialization done!\n");
+    }
+    else
+    {
+        if(dfs_mkfs("elm", BLK_DEV_NAME) == 0)
+        {
+            if (dfs_mount(BLK_DEV_NAME, "/", "elm", 0, 0) == 0)
+            {
+                rt_kprintf("file system initialization done!\n");
+            }
+            else
+            {
+                rt_kprintf("file system initialization failed!\n");
+            }
+        }
+    }
+    return 0;
+}
+INIT_ENV_EXPORT(mnt_init);
+#endif /* defined(RT_USING_DFS_ELMFAT) && !defined(BSP_USING_SDCARD) */
+#endif /* BSP_USING_QSPI_FLASH */
+</code>
   * 5.3 添加文件路径，这样生成工程的时候可以自动将该文件加入MDK工程。
 {{ :icore4t:iCore4T_RTT_5_8.png?direct |}}

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