G-CAMS-DATU/applications/fram/mb85rs.c

/*
 * Copyright (c) 2006-2021, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2024-05-08     LJ       the first version
 */

#include <mb85rs.h>

#define SPI_DEVICE_NAME     "spi3"
#define MB85RS_SPI_DEVICE_NAME     "spi30"
struct rt_spi_device *spi_dev_mb85rs;

/**
rt_uint8_t data_to_write[] = {0xAA, 0xBB, 0xCC, 0xDD};
         rt_uint16_t write_address = 0x0102;
         rt_uint16_t num_bytes_to_write = sizeof(data_to_write);
         rt_uint8_t read_buff[num_bytes_to_write];

        // mb85rs_write_bytes(write_address, data_to_write, num_bytes_to_write);

         mb85rs_read_bytes(write_address, read_buff, num_bytes_to_write);

         for (int i = 0; i < num_bytes_to_write; i++) {
             rt_kprintf("%02X ", read_buff[i]);
         }
         rt_kprintf("\n");
 */

//初始化
void spi_flash_mb85rs_init(void)
{
    struct rt_spi_configuration cfg;
    __HAL_RCC_GPIOA_CLK_ENABLE()
    ;

    //先把设备挂载到总线上
    rt_hw_spi_device_attach(SPI_DEVICE_NAME, MB85RS_SPI_DEVICE_NAME, GPIOA, GPIO_PIN_15);
    //查找设备
    spi_dev_mb85rs = (struct rt_spi_device *) rt_device_find(MB85RS_SPI_DEVICE_NAME);

    cfg.data_width = 8;
    cfg.mode = RT_SPI_MASTER | RT_SPI_MODE_0 | RT_SPI_MSB;
    cfg.max_hz = MB85RS_SPICLOCK; /* 20M */

    rt_spi_configure(spi_dev_mb85rs, &cfg);
}
//INIT_COMPONENT_EXPORT(rt_hw_spi_flash_init);

/**
 * 读取ID
 */
void mb85rs_read_id()
{

    rt_uint8_t read_id = REG_READ_DEVICE_ID;
    rt_uint8_t id[5] = { 0 };

    rt_spi_send_then_recv(spi_dev_mb85rs, &read_id, 1, id, 5);
    rt_kprintf("spi recv ID is:%x%x%x%x%x\n", id[0], id[1], id[2], id[3], id[4]);

    rt_kprintf("Device ID: %02X %02X %02X %02X\n", id[0], id[1], id[2], id[3]);

}

/**
 * 写使能
 * @param select
 */
void mb85rs_write_enable(rt_uint8_t select)
{
    rt_spi_send(spi_dev_mb85rs, &select, 1);
}


/**
 * 写单字节
 * @param write_addr
 * @param write_data
 */
rt_uint8_t  mb85rs_write_byte(rt_uint16_t write_addr, rt_uint8_t write_data)
{
    rt_uint8_t send_buff[3];
    rt_uint8_t err;
    mb85rs_write_enable(REG_WRITE_ENABLE);
    send_buff[0] = REG_WRITE_COMMAND;
    send_buff[1] = (write_addr >> 8) & 0xff;
    send_buff[2] = write_addr & 0xff;
    err = rt_spi_send_then_send(spi_dev_mb85rs, send_buff, 3, &write_data, 1);
    mb85rs_write_enable(REG_WRITE_DISABLE);
    return err;
}


/**
 * 写多字节
 * @param write_addr
 * @param write_buff
 * @param write_bytes
 */
rt_uint8_t mb85rs_write_bytes(rt_uint16_t write_addr, rt_uint8_t *write_buff, rt_uint16_t write_bytes)
{
    rt_uint8_t send_buff[3];
    rt_uint8_t err;
    mb85rs_write_enable(REG_WRITE_ENABLE);
    send_buff[0] = REG_WRITE_COMMAND;
    send_buff[1] = (write_addr >> 8) & 0xff;
    send_buff[2] = write_addr & 0xff;
    err = rt_spi_send_then_send(spi_dev_mb85rs, send_buff, 3, write_buff, write_bytes);
    mb85rs_write_enable(REG_WRITE_DISABLE);
    return err;
}

/**
 * 读取字节
 * @param read_addr
 * @param read_buff
 * @param read_bytes
 */
rt_uint8_t mb85rs_read_bytes(rt_uint16_t read_addr, rt_uint8_t *read_buff, rt_uint16_t read_bytes)
{
    rt_uint8_t send_buff[3] = { 0 };
    send_buff[0] = REG_READ_COMMAND;
    send_buff[1] = (read_addr >> 8) & 0xff;
    send_buff[2] = read_addr & 0xff;
    return rt_spi_send_then_recv(spi_dev_mb85rs, send_buff, 3, read_buff, read_bytes);
}




void mb85rs_read_device_id_write_status(rt_uint8_t write_data)
{
    rt_uint8_t send_buff[2];

    send_buff[0] = REG_WRITE_STATUS;
    send_buff[1] = write_data;
    rt_spi_send(spi_dev_mb85rs, send_buff, 2);
}

/**
 * 读取状态
 * @return
 */
rt_uint8_t mb85rs_read_status(void)
{
    rt_uint8_t read_status = 0, send_buff[1];

    send_buff[0] = REG_READ_STATUS;
    rt_spi_send_then_recv(spi_dev_mb85rs, send_buff, 1, &read_status, 1);

    return read_status;
}

/**
 * 写状态寄存器
 * @param write_data
 */
void mb85rs_write_status(rt_uint8_t write_data)
{
    rt_uint8_t send_buff[2];

    send_buff[0] = REG_WRITE_STATUS;
    send_buff[1] = write_data;
    rt_spi_send(spi_dev_mb85rs, send_buff, 2);
}