2
Magicoe是攻城狮 · 2022年08月30日 · 上海市徐汇区

【MM32F5270开发板试用】四、SPI的驱动，先点个屏幕

嵌入式系统”星辰“CPUMCU

对于MM32F5270在rt-thread上的SPI驱动添加一如既往的简单

添加rtt component文件夹下关于spi的驱动框架文件，当然我们会用到spi去做SD卡的读取，所以呢spi_msd.c也得添加上来， 读卡的部分咱们下章再说
title=

rtconfig.h中添加宏定义

#define RT_USING_SPI
#define RT_USING_SPI_MSD // 如果需要SPI接SD卡

#define BSP_USING_SPI
#define BSP_USING_SPI1
#define BSP_USING_SPI3

之后就是加入drv_spi.c啦，似乎spi的驱动比I2C长很多，这里就长话短说，具体可以参考其他xx32的bsp
SPI的引脚 时钟 功能初始化必不可少
2.png

数据收发函数咱也不能落下
3.png

接下来是SPI数据收发和对应spi接口关联的结构体定义

#if defined(BSP_USING_SPI1)
static struct lpc_spi spi1 = 
{
    .base = SPI1
}; 

static struct rt_spi_bus spi1_bus = 
{
    .parent.user_data = &spi1
}; 
#endif


#if defined(BSP_USING_SPI3)
static struct lpc_spi spi3 = 
{
    .base = SPI3
}; 

static struct rt_spi_bus spi3_bus = 
{
    .parent.user_data = &spi3
}; 
#endif

static struct rt_spi_ops lpc_spi_ops = 
{
    .configure = spi_configure, 
    .xfer      = spixfer
}; 

static struct rt_spi_ops lpc_spi3_ops = 
{
    .configure = spi_configure, 
    .xfer      = spixfer
};

完成以上种种，基本上SPI在MM32F5270的rt-thread上的移植就算完成了，接下来咱们点个SPI的LCD屏幕测试下。
/-------------------- 点个屏幕 --------------------/
我的这块LCD屏幕驱动IC是ILI9341,2.4寸320x240的，有很多参考例程，咱们就不赘述了，列举简单的API 函数，自己丰富完善即可

先说LCD相关的复位RES，片选CS，命令数据选择DC，背光BL，但都是用第二篇pin脚的那章介绍的内容来的，具体四个引脚配置如下，对应了pin的8/9/10/11，我自己排的，挺方便的

#define LCD_RES_PIN           8
#define LCD_CS_PIN            9
#define LCD_DC_PIN            10
#define LCD_BL_PIN            11

lcd咱们用rt_hw_lcd_config函数挂载到device spi10上

static int rt_hw_lcd_config(void)
{
    spi_dev_lcd = (struct rt_spi_device *)rt_device_find("spi10");

    /* config spi */
    {
        struct rt_spi_configuration cfg;
        cfg.data_width = 8;
        cfg.mode = RT_SPI_MASTER | RT_SPI_MODE_0 | RT_SPI_MSB;
        cfg.max_hz = 50 * 1000 * 1000;

        rt_spi_configure(spi_dev_lcd, &cfg);
    }

    return RT_EOK;
}

具体的读写LCD是命令的还是数据的，我就不多写了，就是控制个DC那个口。

具体LCD的初始化用的这个函数 int rt_hw_spi_lcd_init(void)
囊括了GPIO的初始化啥的，LCD寄存器的初始化，一般厂家给，怼着写就成
4.png

其他画点，画线，画圆圈啥的API就参考rtt提供的一些例子吧，我懒，这个例子我塞了很多类似的API
5.png

如果一切顺利，到这里编译下载运行，就可以看到LCD屏幕背光点亮，开始刷屏了。但是咱们没完，弄个烟花测测LCD
说实话这个firework的源码我也忘了从哪里来的了，看头文件作者是LEGION，感谢他，希望是他。
这里干脆附上所有的代码~

/*
 * Copyright (c) 2006-2020, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2020-10-19     LEGION       the first version
 */

#include "drv_spi_ili9341.h"
#include "firework.h"
#include "image.h"
#include <stdlib.h>

#if 1
struct fireWorks{
    uint16_t  *x;
    uint16_t  *y;
    uint16_t  y1;
    struct my_image *firework;
};

uint16_t color_t = 0x00;
static void firework_init(struct fireWorks *firework, struct my_image *image1, struct my_circle *flower, struct my_image *image2, int i)
{
#if 0
    *firework->x = rand() % 145 + 5;
    *firework->y = rand() % 20  + 90;
    firework->y1 = rand() % 50;
#else
    *firework->x = rand() % 220 + 5;
    *firework->y = rand() % 20  + 290;
    firework->y1 = rand() % 50;
#endif    
    creat_Image(firework->firework, image1, 4 * i, 0, Square);
    creat_Image(flower, image2, 18, 18 + 36 * (i % 4), Circle);
    flower->r = 2;
}


static void firework_thread_entry(void *f0)
{
    struct my_image  *image1   = image_init(40, 7, Square);
    get_image(image1, (uint16_t *)gImage_shoot);
    struct my_circle *s1 = image_init(1, 18, Circle);       //ь»¨
    struct fireWorks *firework = (struct fireWorks *)rt_malloc(sizeof(struct fireWorks)); //ь»¨µ¯
    firework->x = (uint16_t *)rt_malloc(sizeof(uint16_t));
    firework->y = (uint16_t *)rt_malloc(sizeof(uint16_t));
    firework->firework = image_init(3, 7, Square);
    firework->firework->x = firework->x;
    firework->firework->y = firework->y;
    s1->x = firework->x;
    s1->y = firework->y;
    uint16_t r1;
    int i;
    while(1)
    {
        i = rand() % 10;
        firework_init(firework, image1, s1, f0, i);
        r1 = rand() % 8 + 10;
        do{
            LCD_Image(firework->firework);
            rt_thread_mdelay(4 * i + 5);
            LCD_Fill(*firework->x, *firework->y, firework->firework->width, firework->firework->high, color_t);
            if(*firework->y == firework->y1)break;
        }while((*firework->y)--);
        do{
            LCD_Circle(s1);
            rt_thread_mdelay(5 * i + 20);
            s1->r++;
        }while(s1->r < r1);
        LCD_Fill_Circle(s1, color_t);
        rt_thread_mdelay(500 * i);
    }
}

static void firework_thread_entry1(void *f0)
{
    struct my_image  *image1   = image_init(40, 7, Square);
    get_image(image1, (uint16_t *)gImage_shoot);
    struct my_circle *s1 = image_init(1, 18, Circle);       //ь»¨
    struct fireWorks *firework = (struct fireWorks *)rt_malloc(sizeof(struct fireWorks)); //ь»¨µ¯
    firework->x = (uint16_t *)rt_malloc(sizeof(uint16_t));
    firework->y = (uint16_t *)rt_malloc(sizeof(uint16_t));
    firework->firework = image_init(3, 7, Square);
    firework->firework->x = firework->x;
    firework->firework->y = firework->y;
    s1->x = firework->x;
    s1->y = firework->y;
    uint16_t r1;
    int i;
    while(1)
    {
        i = rand() % 10;
        firework_init(firework, image1, s1, f0, i);
        r1 = rand() % 8 + 10;
        do{
            LCD_Image(firework->firework);
            rt_thread_mdelay(8 * i + 5);
            LCD_Fill(*firework->x, *firework->y, firework->firework->width, firework->firework->high, color_t);
            if(*firework->y == firework->y1)break;
        }while((*firework->y)--);
        do{
            LCD_Circle(s1);
            rt_thread_mdelay(6 * i + 20);
            s1->r++;
        }while(s1->r < r1);
        LCD_Fill_Circle(s1, color_t);
        rt_thread_mdelay(300 * i);
    }
}

static void firework_thread_entry2(void *f0)
{
    struct my_image  *image1   = image_init(40, 7, Square);
    get_image(image1, (uint16_t *)gImage_shoot);
    struct my_circle *s1 = image_init(1, 18, Circle);       //ь»¨
    struct fireWorks *firework = (struct fireWorks *)rt_malloc(sizeof(struct fireWorks)); //ь»¨µ¯
    firework->x = (uint16_t *)rt_malloc(sizeof(uint16_t));
    firework->y = (uint16_t *)rt_malloc(sizeof(uint16_t));
    firework->firework = image_init(3, 7, Square);
    firework->firework->x = firework->x;
    firework->firework->y = firework->y;
    s1->x = firework->x;
    s1->y = firework->y;
    uint16_t r1;
    int i;
    while(1)
    {
        i = rand() % 10;
        firework_init(firework, image1, s1, f0, i);
        r1 = rand() % 8 + 10;
        do{
            LCD_Image(firework->firework);
            rt_thread_mdelay(2 * i + 5);
            LCD_Fill(*firework->x, *firework->y, firework->firework->width, firework->firework->high, color_t);
            if(*firework->y == firework->y1)break;
        }while((*firework->y)--);
        do{
            LCD_Circle(s1);
            rt_thread_mdelay(4 * i + 20);
            s1->r++;
        }while(s1->r < r1);
        LCD_Fill_Circle(s1, color_t);
        rt_thread_mdelay(200 * i);
    }
}


static void firework_thread_entry3(void *f0)
{
    struct my_image  *image1   = image_init(40, 7, Square);
    get_image(image1, (uint16_t *)gImage_shoot);
    struct my_circle *s1 = image_init(1, 18, Circle);       //ь»¨
    struct fireWorks *firework = (struct fireWorks *)rt_malloc(sizeof(struct fireWorks)); //ь»¨µ¯
    firework->x = (uint16_t *)rt_malloc(sizeof(uint16_t));
    firework->y = (uint16_t *)rt_malloc(sizeof(uint16_t));
    firework->firework = image_init(3, 7, Square);
    firework->firework->x = firework->x;
    firework->firework->y = firework->y;
    s1->x = firework->x;
    s1->y = firework->y;
    uint16_t r1;
    int i;
    while(1)
    {
        i = rand() % 8;
        firework_init(firework, image1, s1, f0, i);
        r1 = rand() % 8 + 10;
        do{
            LCD_Image(firework->firework);
            rt_thread_mdelay(15 * i + 5);
            LCD_Fill(*firework->x, *firework->y, firework->firework->width, firework->firework->high, color_t);
            if(*firework->y == firework->y1)break;
        }while((*firework->y)--);
        do{
            LCD_Circle(s1);
            rt_thread_mdelay(20 * i + 20);
            s1->r++;
        }while(s1->r < r1);
        LCD_Fill_Circle(s1, color_t);
        rt_thread_mdelay(350 * i);
    }
}

static void firework_thread_entry4(void *f0)
{
    struct my_image  *image1   = image_init(40, 7, Square);
    get_image(image1, (uint16_t *)gImage_shoot);
    struct my_circle *s1 = image_init(1, 18, Circle);       //ь»¨
    struct fireWorks *firework = (struct fireWorks *)rt_malloc(sizeof(struct fireWorks)); //ь»¨µ¯
    firework->x = (uint16_t *)rt_malloc(sizeof(uint16_t));
    firework->y = (uint16_t *)rt_malloc(sizeof(uint16_t));
    firework->firework = image_init(3, 7, Square);
    firework->firework->x = firework->x;
    firework->firework->y = firework->y;
    s1->x = firework->x;
    s1->y = firework->y;
    uint16_t r1;
    int i;
    while(1)
    {
        i = rand() % 8;
        firework_init(firework, image1, s1, f0, i);
        r1 = rand() % 8 + 10;
        do{
            LCD_Image(firework->firework);
            rt_thread_mdelay(5 * i + 5);
            LCD_Fill(*firework->x, *firework->y, firework->firework->width, firework->firework->high, color_t);
            if(*firework->y == firework->y1)break;
        }while((*firework->y)--);
        do{
            LCD_Circle(s1);
            rt_thread_mdelay(10 * i + 20);
            s1->r++;
        }while(s1->r < r1);
        LCD_Fill_Circle(s1, color_t);
        rt_kprintf("color_addr = %x\r\n", &color_t);
        rt_kprintf("color = %d\r\n", color_t);

        rt_thread_mdelay(250 * i);
    }
}

static int firework_Init(void)
{
    struct my_image  *f0 = image_init(36, 144, Square);
    get_image(f0, (uint16_t *)gImage_flower0);
#if 1
    rt_thread_t firework_thread = rt_thread_create("fk0",  firework_thread_entry,  f0, 1024, 5, 10);
    if (firework_thread != RT_NULL)
    {
        rt_thread_startup(firework_thread);
    }
#endif
#if 1
    rt_thread_t firework_thread1 = rt_thread_create("fk1", firework_thread_entry1, f0, 1024, 6, 10);
    if (firework_thread1 != RT_NULL)
    {
        rt_thread_startup(firework_thread1);
    }
#endif
#if 1
    rt_thread_t firework_thread2 = rt_thread_create("fk2", firework_thread_entry2, f0, 1024, 7, 10);
    if (firework_thread2 != RT_NULL)
    {
        rt_thread_startup(firework_thread2);
    }
#endif
#if 1
    rt_thread_t firework_thread3 = rt_thread_create("fk3", firework_thread_entry3, f0, 1024, 8, 10);
    if (firework_thread3 != RT_NULL)
    {
        rt_thread_startup(firework_thread3);
    }
#endif
#if 1
    rt_thread_t firework_thread4 = rt_thread_create("fk4", firework_thread_entry4, f0, 1024, 9, 10);
    if (firework_thread4 != RT_NULL)
    {
        rt_thread_startup(firework_thread4);
    }
#endif
    LCD_Fill(0, 0, 240, 320, 0x00);
    return 0;
}

INIT_APP_EXPORT(firework_Init);
#endif

编译下载看效果~ 点些00B76A87.png祝贺 MM32F5270 一把

https://v.qq.com/x/page/n3354...

2 阅读 1.5k
推荐阅读
MM32F5 系列漫谈 1：“星辰” 处理器？！ 车规MCU知识梳理 搭载安谋科技“星辰”处理器的星辰Star Kit开发套件介绍 Arm中国“星辰”处理器量产！与Cortex-M有何区别？ 超低功耗MCU的选择方法 极术公开课回放及系列视频汇总（Arm PSA／功耗／嵌入式／AI／SoC等）
灵动MM32 MCU
关注数
6144
内容数
276
灵动MM32 MCU相关技术知识，欢迎关注~
关注专栏 专栏主页
目录
极术微信服务号
关注极术微信号
实时接收点赞提醒和评论通知
安谋科技学堂公众号
关注安谋科技学堂
实时获取安谋科技及 Arm 教学资源
安谋科技招聘公众号
关注安谋科技招聘
实时获取安谋科技中国职位信息