1 /*
2 * Copyright (c) 2006-2021, RT-Thread Development Team
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 *
6 * Change Logs:
7 * Date Author Notes
8 * 2018-11-27 zylx first version
9 * 2019-04-11 ZYH port from stm32f7serial
10 */
11
12 #include <board.h>
13 #include <drv_qspi.h>
14 #include <rtdevice.h>
15 #include <rthw.h>
16 #include <finsh.h>
17
18 #ifdef BSP_USING_QSPI_FLASH
19
20 #include "dev_spi_flash.h"
21 #include "dev_spi_flash_sfud.h"
22
n25qxxa_read_status_register2(struct rt_qspi_device * device)23 char n25qxxa_read_status_register2(struct rt_qspi_device *device)
24 {
25 /* 0x35 read status register2 */
26 char instruction = 0x35, status;
27
28 rt_qspi_send_then_recv(device, &instruction, 1, &status, 1);
29
30 return status;
31 }
32
n25qxxa_write_enable(struct rt_qspi_device * device)33 void n25qxxa_write_enable(struct rt_qspi_device *device)
34 {
35 /* 0x06 write enable */
36 char instruction = 0x06;
37
38 rt_qspi_send(device, &instruction, 1);
39 }
40
n25qxxa_enter_qspi_mode(struct rt_qspi_device * device)41 void n25qxxa_enter_qspi_mode(struct rt_qspi_device *device)
42 {
43 char status = 0;
44 /* 0x38 enter qspi mode */
45 char instruction = 0x38;
46 char write_status2_buf[2] = {0};
47
48 /* 0x31 write status register2 */
49 write_status2_buf[0] = 0x31;
50
51 status = n25qxxa_read_status_register2(device);
52 if (!(status & 0x02))
53 {
54 status |= 1 << 1;
55 n25qxxa_write_enable(device);
56 write_status2_buf[1] = status;
57 rt_qspi_send(device, &write_status2_buf, 2);
58 rt_qspi_send(device, &instruction, 1);
59 rt_kprintf("flash already enter qspi mode\n");
60 rt_thread_mdelay(10);
61 }
62 }
63
rt_hw_qspi_flash_with_sfud_init(void)64 static int rt_hw_qspi_flash_with_sfud_init(void)
65 {
66 rt_hw_qspi_device_attach("qspi1", "qspi10", RT_NULL, 4, n25qxxa_enter_qspi_mode, RT_NULL);
67
68 /* init n25qxx */
69 if (RT_NULL == rt_sfud_flash_probe(FAL_USING_NOR_FLASH_DEV_NAME, "qspi10"))
70 {
71 return -RT_ERROR;
72 }
73
74 return RT_EOK;
75 }
76 INIT_COMPONENT_EXPORT(rt_hw_qspi_flash_with_sfud_init);
77
78 #endif/* BSP_USING_QSPI_FLASH */
79