73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
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/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2021-01-19 wanghaijing the first version
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <spi_flash.h>
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#include <drv_qspi.h>
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#ifdef BSP_USING_QSPI_FLASH
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char w25qxx_read_status_register2(struct rt_qspi_device *device)
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{
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/* 0x35 read status register2 */
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char instruction = 0x35, status;
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rt_qspi_send_then_recv(device, &instruction, 1, &status, 1);
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return status;
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}
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void w25qxx_write_enable(struct rt_qspi_device *device)
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{
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/* 0x06 write enable */
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char instruction = 0x06;
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rt_qspi_send(device, &instruction, 1);
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}
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void w25qxx_enter_qspi_mode(struct rt_qspi_device *device)
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{
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char status = 0;
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/* 0x38 enter qspi mode */
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char instruction = 0x38;
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char write_status2_buf[2] = {0};
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/* 0x31 write status register2 */
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write_status2_buf[0] = 0x31;
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status = w25qxx_read_status_register2(device);
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if (!(status & 0x02))
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{
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status |= 1 << 1;
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w25qxx_write_enable(device);
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write_status2_buf[1] = status;
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rt_qspi_send(device, &write_status2_buf, 2);
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rt_qspi_send(device, &instruction, 1);
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rt_kprintf("flash already enter qspi mode\n");
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rt_thread_mdelay(10);
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}
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}
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static int rt_qspi_flash_init(void)
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{
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extern rt_spi_flash_device_t rt_sfud_flash_probe(const char *spi_flash_dev_name, const char *spi_dev_name);
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stm32_qspi_bus_attach_device("qspi1", "qspi10", RT_NULL, 4, w25qxx_enter_qspi_mode, RT_NULL);
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if (RT_NULL == rt_sfud_flash_probe("norflash1", "qspi10"))
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{
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return -RT_ERROR;
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}
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return RT_EOK;
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}
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INIT_ENV_EXPORT(rt_qspi_flash_init);
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#endif/* BSP_USING_QSPI_FLASH */
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