【MM32F5270开发板试用】四、SPI的驱动，先点个屏幕
本篇文章来自极术社区与灵动组织的MM32F5270开发板评测活动，更多开发板试用活动请关注极术社区网站。作者：Magicoe是攻城狮
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
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
数据收发函数咱也不能落下
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}; #endifstatic 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 11lcd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
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
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 AuthorNotes * 2020-10-19 LEGIONthe first version */#include "drv_spi_ili9341.h"#include "firework.h"#include "image.h"#include #if 1struct 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 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 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 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 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
【MM32F5270开发板试用】四、SPI的驱动，先点个屏幕 - 极术社区 - 连接开发者与智能计算生态aijishu.com/a/1060000000349559
祝贺 MM32F5270 一把