2024-08-06 01:01:16 +08:00
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2024-08-06 10:00:49 +08:00
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2024-08-06 01:52:45 +08:00
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换了env2就可以？
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移出来+头文件可以编译
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但
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2024-08-06 02:00:41 +08:00
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对照示例0.1.1版什么都不用做，也不会报错什么没定义
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2024-08-06 10:32:03 +08:00
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对比.config/rtconfig.h
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但发了红外线也没反应……
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再加回接收、发送
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又是没定义
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对比.config/rtconfig.h
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调整好pin，timer，#define ***timer
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总算可以了
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2024-08-06 10:35:10 +08:00
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调整好针脚等可以运行了，但一闪一闪的，估计是线程切换的原因？
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2024-08-06 15:43:13 +08:00
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注释掉红外线线程，也没有用，改了优先级终于可以了
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2024-08-07 21:53:20 +08:00
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**破案了！lcd、红外线用的同一个timer14，[哭笑不得]😂**
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换了个timer11就不闪了！！！
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2024-08-06 15:43:13 +08:00
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``` c
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Snake_Thread = rt_thread_create("Snake_Thread", snake_entry, RT_NULL, THREAD_STACK_SIZE, 10, THREAD_TIMESLICE);
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```
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2024-08-06 18:00:29 +08:00
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不注释又闪了，
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加到myproject，没唤醒时没事，唤醒后闪，重启也闪
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2024-08-06 10:00:49 +08:00
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### GET_PIN(F, 11) 的头文件
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``` c
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#include <drv_gpio.h>
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/* 配置 LED 灯引脚 */
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#define PIN_LED_B GET_PIN(F, 11) // PF11 : LED_B --> LED
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#define PIN_LED_R GET_PIN(F, 12) // PF12 : LED_R --> LED
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2024-08-06 10:53:50 +08:00
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```
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### 红外线遥控器按键值
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原来要按两次key才变，搞得还以为昨天找到的都是乱输出的
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| 编号（key）| 功能 |
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| :----: | :----: |
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| 0x30| 上 |
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| 0xE8 | 左 |
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| 0xB0 | 下 |
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| 0x68 | 右 |
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| 0xFF | OK |
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| 0x38 | 电源键 |
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| 0xA8 | 静音 |
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| 0x88 | 菜单 |
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2024-08-06 18:00:29 +08:00
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| 0x28 | 退出 |
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### 等待消息
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写成这样，导致一直等待，所以一直没反应
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``` c
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if(page_chosen == 1)
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{
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rt_mdelay(1000);
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}
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2024-08-07 21:53:20 +08:00
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```
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### 附：ringbuffer（环形缓冲区）
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注意：RT-Thread 的 ringbuffer 组件并未提供线程阻塞的功能，因此 ringbuffer 本质上是一个全局共享的对象，多线程使用时注意使用互斥锁保护。
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``` c
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#include <rtthread.h>
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#include <ipc/ringbuffer.h>
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typedef struct rb_example {
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int a;
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int b;
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} rb_example_t;
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int ringbuffer_example(void)
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{
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rb_example_t data = {
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.a = 1,
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.b = 2,
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};
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struct rt_ringbuffer * rb = rt_ringbuffer_create(sizeof(rb_example_t) * 2);
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RT_ASSERT(rb != RT_NULL);
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rt_kprintf("Put data to ringbuffer, a: %d b: %d size: %d\n", data.a, data.b, sizeof(data));
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rt_ringbuffer_put(rb, (rt_uint8_t *)&data, sizeof(data));
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rb_example_t recv_data;
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rt_size_t recv = rt_ringbuffer_get(rb, (rt_uint8_t *)&recv_data, sizeof(recv_data));
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RT_ASSERT(recv == sizeof(recv_data));
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rt_kprintf("Get data from ringbuffer, a: %d b: %d size: %d\n", recv_data.a, recv_data.b, sizeof(recv_data));
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return 0;
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}
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MSH_CMD_EXPORT(ringbuffer_example, ringbuffer example);
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```
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### union（联合体）
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约等于结构体
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1. 可以通过v.u来操作一个uint32类型的对象，当需要将uint32变量的低端字节看做一个字符的时候，只需要访问v.c就可以了
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2. 共享同一块大小的内存
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