串口发送（未成功）

.config

@@ -1660,7 +1660,7 @@ CONFIG_BSP_USING_UART1=y
 # CONFIG_BSP_UART1_RX_USING_DMA is not set
 # CONFIG_BSP_UART1_TX_USING_DMA is not set
 CONFIG_BSP_USING_UART2=y
-CONFIG_BSP_UART2_RX_USING_DMA=y
+# CONFIG_BSP_UART2_RX_USING_DMA is not set
 # CONFIG_BSP_UART2_TX_USING_DMA is not set
 # CONFIG_BSP_USING_UART3 is not set
 # CONFIG_BSP_USING_UART4 is not set

.vscode/c_cpp_properties.json

@@ -422,7 +422,8 @@
                 "d:\\src",
                 "d:\\src\\klibc",
                 "d:\\Develop\\libraries\\STM32F4xx_HAL\\STM32F4xx_HAL_Driver\\Src",
-                "d:\\Develop\\libraries\\STM32F4xx_HAL\\CMSIS\\Device\\ST\\STM32F4xx\\Source\\Templates"
+                "d:\\Develop\\libraries\\STM32F4xx_HAL\\CMSIS\\Device\\ST\\STM32F4xx\\Source\\Templates",
+                "${workspaceFolder}/packages/aht10-latest/inc"
             ]
         }
     ],

board/board.h

@@ -25,6 +25,10 @@ extern "C" {
 #define STM32_FLASH_SIZE             (1024 * 1024)
 #define STM32_FLASH_END_ADDRESS      ((uint32_t)(STM32_FLASH_START_ADRESS + STM32_FLASH_SIZE))
 
+
+#define BSP_UART2_TX "PA2"
+#define BSP_UART2_RX "PA3"
+
 #if defined(__ARMCC_VERSION)
 extern int Image$$RW_IRAM1$$ZI$$Limit;
 #define HEAP_BEGIN      ((void *)&Image$$RW_IRAM1$$ZI$$Limit)

my_pro/my_func.c

@@ -7,6 +7,8 @@
 #include <time.h>
 
 #define LCD_MAX 240
+//串口
+rt_device_t serial;
 
 extern char tmp[];
 void lcd_black(int x, int y)

my_pro/my_func.h

@@ -6,7 +6,8 @@
 #define LCD_MAX 240
 #define EVENT_MQTT_ENABLE (1<<3)
 // struct rt_event my_event;
-
+//串口
+extern rt_device_t serial;
 
 void mytime();
 void greattime();

my_pro/myinfrared.c

@@ -30,20 +30,41 @@ void snake_compare(rt_uint8_t key, rt_uint8_t repeat)
     rt_atomic_store(&snake_pressed, snake_max + 1);
     // 上
     if (rt_strcmp(tmp, "30") == 0 || rt_strcmp(tmp, "53") == 0)
+    {
         if (rt_atomic_load(&now_direction) != 2)
             rt_atomic_store(&now_direction, 0);
+        char str[] = "forward";
+        rt_device_write(serial, 0, str, (sizeof(str) - 1));
+
+    }
+        
     // 左
     if (rt_strcmp(tmp, "E8") == 0 || rt_strcmp(tmp, "99") == 0)
+    {
         if (rt_atomic_load(&now_direction) != 3)
             rt_atomic_store(&now_direction, 1);
+        char str[] = "left";
+        rt_device_write(serial, 0, str, (sizeof(str) - 1));
+    }
+        
     // 下
     if (rt_strcmp(tmp, "B0") == 0 || rt_strcmp(tmp, "4B") == 0)
+    {
         if (rt_atomic_load(&now_direction) != 0)
             rt_atomic_store(&now_direction, 2);
+        char str[] = "back";
+        rt_device_write(serial, 0, str, (sizeof(str) - 1));
+    }
+        
     // 右
     if (rt_strcmp(tmp, "68") == 0 || rt_strcmp(tmp, "83") == 0)
+    {
         if (rt_atomic_load(&now_direction) != 1)
             rt_atomic_store(&now_direction, 3);
+        char str[] = "right";
+        rt_device_write(serial, 0, str, (sizeof(str) - 1));
+    }
+        
     // 菜单（切换页面）
     if (repeat == 0 && (rt_strcmp(tmp, "88") == 0 || rt_strcmp(tmp, "11") == 0))
     {
@@ -58,7 +79,9 @@ void snake_compare(rt_uint8_t key, rt_uint8_t repeat)
     // 确认（暂停、页面冻结）
     if (repeat == 0 && (rt_strcmp(tmp, "73") == 0||rt_strcmp(tmp, "FF") == 0))
     {
-        
+        char str[] = "OK";
+    /* 发送字符串 */
+        rt_device_write(serial, 0, str, (sizeof(str) - 1));
         if (page_chosen == 4&& page_stop == 0)
         {
             // rt_event_send(&my_event, EVENT_MQTT_ENABLE);

my_pro/myproject.c

@@ -9,6 +9,8 @@
 #include <ap3216c.h>
 #include <dfs_posix.h>
 #include <drv_lcd.h>
+#include "rtdevice.h"
+// #include "serial_v2.h"
 #include "mysnake.h"
 #include "infrared.h"
 #include <ulog.h>
@@ -401,7 +403,32 @@ void cdc_entry(void *parameter)
         rt_thread_mdelay(500);
     }
 }
+/* 接收数据回调函数 */
+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 */
+    rt_sem_release(&rx_sem);
 
+    return RT_EOK;
+}
+
+static void serial_thread_entry(void *parameter)
+{
+    char 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 */
+        while (rt_device_read(serial, -1, &ch, 1) != 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);
+        }
+        /* 读取到的数据通过串口错位输出 */
+        ch = ch + 1;
+        rt_device_write(serial, 0, &ch, 1);
+    }
+}
 
 
 
@@ -418,12 +445,28 @@ void ath_init(void)
 void serial_init(void)
 {
     // 初始化设备
-    Dev = aht10_init(AHT10_I2C_BUS);
+    serial = rt_device_find("uart2");
     if (Dev == RT_NULL)
     {
-        rt_kprintf("AHT10_init Fail");
+        rt_kprintf("uart1 not find. Fail");
         return;
     }
+    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.data_bits = DATA_BITS_8;                            // 数据位 8
+    config.stop_bits = STOP_BITS_1;                            // 停止位 1
+    config.bufsz = 1024;                                        // 修改缓冲区 buff size 为 128
+    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 */
+    rt_device_control(serial, RT_DEVICE_CTRL_CONFIG, &config);
+
+    /* 以 DMA 接收及轮询发送方式打开串口设备 */
+    rt_device_open(serial, RT_DEVICE_FLAG_INT_RX);
+    char str[] = "hello RTT\r\n";
+    /* 发送字符串 */
+    rt_device_write(serial, 0, str, (sizeof(str) - 1));
 }
 void mqt_init(void)
 {
@@ -537,5 +580,7 @@ void my_project(void)
     cdc_init();
 
     tst_init(); // 不知道为什么不能在mqtt_init()之前，不然报错
+
+    serial_init();
 }
 MSH_CMD_EXPORT_ALIAS(my_project, myproject, run my project);

my_pro/pin_irq_example.c

@@ -11,6 +11,8 @@
 #define KEY_DOWN GET_PIN(C, 1)
 #define KEY_LEFT GET_PIN(C, 0)
 #define KEY_RIGHT GET_PIN(C, 4)
+
+
 extern rt_atomic_t now_direction ;
 extern rt_atomic_t snake_pressed ;
 extern int snake_max;

rtconfig.h

@@ -639,7 +639,6 @@
 #define BSP_USING_UART
 #define BSP_USING_UART1
 #define BSP_USING_UART2
-#define BSP_UART2_RX_USING_DMA
 #define BSP_USING_UART6
 #define BSP_USING_TIM
 #define BSP_USING_TIM11