rt-thread/bsp/stm32/stm32h750-artpi/board/port/drv_qspi_flash.c

73 lines
1.7 KiB
C

/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-01-19 wanghaijing the first version
*/
#include <rtthread.h>
#include <rtdevice.h>
#include <spi_flash.h>
#include <drv_qspi.h>
#ifdef BSP_USING_QSPI_FLASH
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_qspi_flash_init(void)
{
extern rt_spi_flash_device_t rt_sfud_flash_probe(const char *spi_flash_dev_name, const char *spi_dev_name);
rt_hw_qspi_device_attach("qspi1", "qspi10", RT_NULL, 4, w25qxx_enter_qspi_mode, RT_NULL);
if (RT_NULL == rt_sfud_flash_probe("norflash1", "qspi10"))
{
return -RT_ERROR;
}
return RT_EOK;
}
INIT_ENV_EXPORT(rt_qspi_flash_init);
#endif/* BSP_USING_QSPI_FLASH */