STM32-Serial Port Method

Experimental preparation

1. STM32 motherboard

2. 8-channel patrol module

3. Several Dupont cables

STM32 needs to download the serial communication source code provided in the document

Experimental purpose

The content of this experiment is mainly to use the STM32 master to receive the data of the 8-channel patrol module through the serial port.

Experimental wiring

STM32 to serial port assistant If you are not using the black stm32 of Yabo, you need to use a usb to ttl module to connect to the computer. The wiring is described in the following table

As shown in the figure:

Experimental steps and phenomena

1. After connecting the wires, open the serial port assistant and you can see the numerical data of the infrared module. Set the baud rate to 115200. As shown below

Experimental source code

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int main()
{
    
    SystemInit();
    delay_init();
    
    uart_init(115200);
    USART2_init(115200);
    
    delay_ms(1000);//Wait for infrared to be normal
    send_control_data(0,0,1); //Just send the corresponding command according to the protocol. This only receives numerical data.
    
    while(1)
    {
        if(g_new_package_flag == 1)
        {
            g_new_package_flag = 0;
            
            if(g_Dmode_Data == 1)
            {
                Deal_Usart_Data();//Numerical data processing
                printf("x1:%d,x2:%d,x3:%d,x4:%d,x5:%d,x6:%d,x7:%d,x8:%d\r\n",IR_Data_number[0],IR_Data_number[1],IR_Data_number[2],IR_Data_number[3],IR_Data_number[4],IR_Data_number[5],IR_Data_number[6],IR_Data_number[7]);
            }
            if(g_Amode_Data == 1)
            {
                Deal_Usart_AData();//Analog data processing
                printf("x1:%d,x2:%d,x3:%d,x4:%d,x5:%d,x6:%d,x7:%d,x8:%d\r\n",IR_Data_Anglo[0],IR_Data_Anglo[1],IR_Data_Anglo[2],IR_Data_Anglo[3],IR_Data_Anglo[4],IR_Data_Anglo[5],IR_Data_Anglo[6],IR_Data_Anglo[7]);
            
            }
            
        }
        
        
    }
}

SET_Eight_Mode(0,0,1);：The first parameter of this function is the calibration mode (0: exit calibration mode 1: enter calibration mode) The second parameter is whether to receive analog data The third parameter is whether to receive numerical data. This routine only provides parsing of numerical data. If you need to parse analog data, you can parse it yourself according to the protocol. The serial port parsing file of this project also has a function for parsing analog values. You can refer to it and call the Deal_Usart_AData function.