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模仿cdc

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dgjames 2024-12-21 19:25:52 +08:00
parent f27d46c2bd
commit 509665eb13
1 changed files with 63 additions and 47 deletions
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108
my_pro/myproject.c
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@ -25,6 +25,7 @@ rt_thread_t Snake_Thread = RT_NULL;
rt_thread_t Infrared_Thread = RT_NULL; rt_thread_t Infrared_Thread = RT_NULL;
rt_thread_t Test_Thread = RT_NULL; rt_thread_t Test_Thread = RT_NULL;
rt_thread_t CDC_Thread = RT_NULL; rt_thread_t CDC_Thread = RT_NULL;
rt_thread_t Serial_Thread = RT_NULL;
char DEMO_PRODUCT_KEY[IOTX_PRODUCT_KEY_LEN + 1] = {0}; char DEMO_PRODUCT_KEY[IOTX_PRODUCT_KEY_LEN + 1] = {0};
char DEMO_DEVICE_NAME[IOTX_DEVICE_NAME_LEN + 1] = {0}; char DEMO_DEVICE_NAME[IOTX_DEVICE_NAME_LEN + 1] = {0};
@ -404,33 +405,47 @@ void cdc_entry(void *parameter)
} }
} }
/* 用于接收消息的信号量 */ // /* 用于接收消息的信号量 */
static struct rt_semaphore rx_sem; // static struct rt_semaphore rx_sem;
/* 接收数据回调函数 */ // /* 接收数据回调函数 */
static rt_err_t uart_input(rt_device_t dev, rt_size_t size) // static rt_err_t uart_input(rt_device_t dev, rt_size_t size)
{ // {
/* 串口接收到数据后产生中断，调用此回调函数，然后发送接收信号量 */ // /* 串口接收到数据后产生中断，调用此回调函数，然后发送接收信号量 */
rt_sem_release(&rx_sem); // rt_sem_release(&rx_sem);
return RT_EOK; // return RT_EOK;
} // }
static void serial_thread_entry(void *parameter) static void serial_thread_entry(void *parameter)
{ {
char ch[105]; rt_device_t dev = RT_NULL;
char buf[] = "hello rt-thread!\r\n";
dev = rt_device_find("uart3");
if (dev)
rt_device_open(dev, RT_DEVICE_FLAG_RDWR);
else
return;
while (1) while (1)
{ {
/* 从串口读取一个字节的数据，没有读取到则等待接收信号量 */ rt_device_write(dev, 0, buf, rt_strlen(buf));
int Size; rt_thread_mdelay(500);
while ((Size = rt_device_read(serial, -1, &ch, 8)) != 1)
{
/* 阻塞等待接收信号量，等到信号量后再次读取数据 */
rt_sem_take(&rx_sem, RT_WAITING_FOREVER);
} }
// char ch[105];
rt_kprintf("%s", ch); // while (1)
} // {
// /* 从串口读取一个字节的数据，没有读取到则等待接收信号量 */
// int Size;
// while ((Size = rt_device_read(serial, -1, &ch, 8)) != 1)
// {
// /* 阻塞等待接收信号量，等到信号量后再次读取数据 */
// rt_sem_take(&rx_sem, RT_WAITING_FOREVER);
// }
// rt_kprintf("%s", ch);
// }
} }
void ath_init(void) void ath_init(void)
@ -445,38 +460,39 @@ void ath_init(void)
} }
void serial_init(void) void serial_init(void)
{ {
// 初始化设备 // // 初始化设备
serial = rt_device_find("uart3"); // serial = rt_device_find("uart3");
if (Dev == RT_NULL) // if (Dev == RT_NULL)
{ // {
rt_kprintf("uart3 not find. Fail"); // rt_kprintf("uart3 not find. Fail");
return; // return;
} // }
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT; /* 初始化配置参数 */ // struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT; /* 初始化配置参数 */
config.baud_rate = BAUD_RATE_9600; // 修改波特率为 9600 // config.baud_rate = BAUD_RATE_9600; // 修改波特率为 9600
config.data_bits = DATA_BITS_8; // 数据位 8 // config.data_bits = DATA_BITS_8; // 数据位 8
config.stop_bits = STOP_BITS_1; // 停止位 1 // config.stop_bits = STOP_BITS_1; // 停止位 1
config.bufsz = 128; // 修改缓冲区 buff size 为 128 // config.bufsz = 128; // 修改缓冲区 buff size 为 128
config.parity = PARITY_NONE; // 无奇偶校验位 // config.parity = PARITY_NONE; // 无奇偶校验位
/* step3：控制串口设备。通过控制接口传入命令控制字，与控制参数 */ // /* step3：控制串口设备。通过控制接口传入命令控制字，与控制参数 */
rt_device_control(serial, RT_DEVICE_CTRL_CONFIG, &config); // rt_device_control(serial, RT_DEVICE_CTRL_CONFIG, &config);
/* 初始化信号量 */ // /* 初始化信号量 */
rt_sem_init(&rx_sem, "rx_sem", 0, RT_IPC_FLAG_FIFO); // rt_sem_init(&rx_sem, "rx_sem", 0, RT_IPC_FLAG_FIFO);
/* 以 中断 接收及轮询发送方式打开串口设备 */ // /* 以 中断 接收及轮询发送方式打开串口设备 */
rt_device_open(serial, RT_DEVICE_FLAG_INT_RX); // rt_device_open(serial, RT_DEVICE_FLAG_INT_RX);
// /* 设置接收回调函数 */ // // /* 设置接收回调函数 */
rt_device_set_rx_indicate(serial, uart_input); // rt_device_set_rx_indicate(serial, uart_input);
const char *str = "hello RTT\r\n"; // const char *str = "hello RTT\r\n";
/* 发送字符串 */ // /* 发送字符串 */
rt_device_write(serial, 0, str, (sizeof(str) - 1)); // rt_device_write(serial, 0, str, (sizeof(str) - 1));
/* 创建 serial 线程 */ // /* 创建 serial 线程 */
rt_thread_t thread = rt_thread_create("serial", serial_thread_entry, RT_NULL, 1024, 25, 10); // rt_thread_t thread = rt_thread_create("serial", serial_thread_entry, RT_NULL, 1024, 25, 10);
Serial_Thread = rt_thread_create("serial", serial_thread_entry, RT_NULL, THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
/* 创建成功则启动线程 */ /* 创建成功则启动线程 */
if (thread != RT_NULL) if (Serial_Thread != RT_NULL)
{ {
rt_thread_startup(thread); rt_thread_startup(Serial_Thread);
} }
else else
{ {