Gitee

https://gitee.com/WangXi_Chn/RttOs_ModuleLib

开发环境

CubeMX
MDK5 IDE
STM32F103C8T6 芯片
Stm32最小系统板
RT-Thread操作系统
面向对象模块接口设计
陶晶驰HMI串口屏
串口屏使用教程

硬件条件

  • 串口屏界面设计工作完成
  • 已知串口屏界面控件对象名称

  • STM32与屏幕串口连接正确

    核心思想

  • 驱动串口

  • 可正常发送指定字符串和帧结束符

    源文件

    Module_UartHMI.h

    ```c /*
    • Copyright (c) 2020 - ~, HIT_HERO Team *
    • UART HMI MODULE HEAD FILE
    • Used in RT-Thread Operate System *
    • Change Logs:
    • Date Author Notes Mail
    • 2020-09-06 WangXi first version WangXi_chn@foxmail.com */

      ifndef MODULE_UARTHMI

      define MODULE_UARTHMI

include

include

include

struct _MODULE_UARTHMI { / Property / char * Property_UartDevName; 

  1. /* Value */
  2. rt_device_t         Value_uart_dev;
  4. /* Method */
  5. void (*Method_Init)(struct _MODULE_UARTHMI *module);
  6. void (*Method_Send)(struct _MODULE_UARTHMI *module,char* string);

}; typedef struct _MODULE_UARTHMI MODULE_UARTHMI;

void Module_UartHMI_Config(MODULE_UARTHMI *module);

endif

/** (C) COPYRIGHT 2020 WANGXI **END OF FILE**/

  1. <a name="3JXqt"></a>
  2. ## Module_UartHMI.c
  3. ```c
  4. /*
  5.  * Copyright (c) 2020 - ~, HIT_HERO Team
  6.  *
  7.  * UART HMI MODULE SOUCE FILE
  8.  * Used in RT-Thread Operate System
  9.  *
  10.  * Change Logs:
  11.  * Date           Author       Notes                Mail
  12.  * 2020-09-06     WangXi       first version        WangXi_chn@foxmail.com
  13.  */
  14. #include "Module_UartHMI.h"
  15. #include <string.h>
  17. static void Module_UartHMIInit(MODULE_UARTHMI *module);
  18. static void Module_UartHMISend(MODULE_UARTHMI *module,char* string);
  20. /* Global Method */
  21. void Module_UartHMI_Config(MODULE_UARTHMI *module)
  22. {
  23.     if( module->Method_Init     == NULL &&
  24.         module->Method_Send        == NULL 
  26.     ){  
  27.         /* Link the Method */
  28.         module->Method_Init         = Module_UartHMIInit;
  29.         module->Method_Send            = Module_UartHMISend;
  31.     }
  32.     else{
  33.         rt_kprintf("Warning: Module uart HMI is Configed twice\n");
  34.         return;
  35.     }
  37.     /* Device Init */
  38.     module->Method_Init(module);
  40.     return;
  41. }
  43. static void Module_UartHMIInit(MODULE_UARTHMI *module)
  44. {
  45.     module->Value_uart_dev = rt_device_find(module->Property_UartDevName);
  46.     if (!module->Value_uart_dev)
  47.     {
  48.         rt_kprintf("find %s failed!\t\n", module->Value_uart_dev);
  49.         return;
  50.     }
  52.     struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;  /* 初始化配置参数 */
  54.     /* step2：修改串口配置参数 */
  55.     config.baud_rate = BAUD_RATE_9600;        //修改波特率为 9600
  56.     config.data_bits = DATA_BITS_8;           //数据位 8
  57.     config.stop_bits = STOP_BITS_1;           //停止位 1
  58.     config.bufsz     = 128;                   //修改缓冲区 buff size 为 128
  59.     config.parity    = PARITY_NONE;           //无奇偶校验位
  61.     /* 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 */
  62.     rt_device_control(module->Value_uart_dev, RT_DEVICE_CTRL_CONFIG, &config);  
  63.     rt_device_open(module->Value_uart_dev, RT_DEVICE_FLAG_DMA_RX);
  65.     /* make sure communicate with HMI successfully */
  66.     rt_thread_mdelay(200);
  67.     rt_uint8_t endsign[3] = {0xff,0xff,0xff};
  68.     rt_device_write(    module->Value_uart_dev, 0, 
  69.                         endsign, 
  70.                         sizeof(endsign));
  71.     rt_thread_mdelay(200);
  72. }
  74. static void Module_UartHMISend(MODULE_UARTHMI *module,char* string)
  75. {
  76.     rt_device_write(    module->Value_uart_dev, 0, 
  77.                         string, 
  78.                         strlen(string));
  79.     rt_thread_mdelay(1);
  80.     rt_uint8_t endsign[3] = {0xff,0xff,0xff};
  81.     rt_device_write(    module->Value_uart_dev, 0, 
  82.                         endsign, 
  83.                         sizeof(endsign));
  84. }
  86. /************************ (C) COPYRIGHT 2020 WANGXI **************END OF FILE****/

使用

  1. ...
  2. dev_UartHMI.Property_UartDevName    = "uart3";
  3. ...
  5. ...
  6. Module_UartHMI_Config(&(dev_UartHMI));
  7. ...
  9. char str[50];
  10. sprintf(str, "tempreture.txt=\"%d\"", data);
  11. dev_UartHMI.Method_Send(&dev_UartHMI,str);
  • 先使用sprintf函数将数据转换成字符串内容
  • 再通过发送方法从串口发送