foreword

The method of uploading variables through VOFA and displaying them as waveforms for debugging is introduced above. VOFA uploads floating points, and a floating point needs 4 bytes to represent, which is not a small burden for the serial port that is not very fast. And it is not friendly to the fixed-point MCU to upload data. For the method of VOFA uploading data, refer to the link below:

STM32 VOFA+ serial port debugging assistant improves motor control debugging efficiency (lower computer code and upper computer operation demonstration)_What software is used for stm32 serial port debugging_Carlos Yi's Blog-CSDN Blog

Here is an introduction to how the anonymous assistant displays the data waveform of the lower computer. In the future development, you can choose the appropriate tool according to the actual situation and usage habits.

Communication Protocol Selection

Here select the flexible format frame mode, refer to the protocol introduction document of the software.

In actual use, because you are not familiar with the protocol, you can't step on the pitfalls. Here is a summary:

The following is a frame of data that meets the communication protocol:

Frame header: 0xAB one byte, fixed, if changed to other, the communication will fail and the waveform cannot be displayed

Source address: one byte, write whatever you want, 0x00 is also fine, it will not affect the waveform display

Target address: one byte, write casually, without affecting the waveform display

Function code: one byte, here is 0xF1, which needs to correspond to the host computer

Data length: two bytes, low byte first, as follows, there are 6 transmitted data

Data content: The following 6-11 are the length of the data to be transmitted, a total of 6, used to represent 3 int16_t variables. It depends on the number of transfer variables

The sum checksum and additional checksum are the two-byte checksums calculated through the transmitted content

The calculation method is as follows:

Host computer configuration implementation

The configuration here displays the three-phase current, which are represented by int16_t, as described in the protocol above, the configuration only needs to add data.

After configuring the data of 0xF1, click the small wrench again, find 0xF1#0:IA-IC, and click OK to display the waveform normally.

If there is no waveform, click the run button in the lower right corner again

Lower computer code implementation

Simply define an array, refer to the communication protocol, and define a send function

static uint8_t tempData[14] = {0xAB,0xFE,0x05,0xF1,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
void UART_Debug(void);

Put the data to be transmitted in the specified location, simple and rude, just call the send function in the periodic task or interrupt.

void UART_Debug(void)
{
          uint16_t flen = tempData_NM[4]+tempData_NM[5]*256;
          uint8_t sumcheck=0;
          uint8_t addcheck=0;
          
         tempData_NM[6] =((int16_t)((Ia_A)*100)&0xFF);
         tempData_NM[7] =((int16_t)((Ia_A)*100)>>8);
         tempData_NM[8] =((int16_t)((Hall_Angle)*100)&0xFF);
         tempData_NM[9] = ((int16_t)((Hall_Angle)*100)>>8);
         tempData_NM[10] =((int16_t)((Hall_Speed)*10)&0xFF);
         tempData_NM[11] =((int16_t)((Hall_Speed)*10)>>8);
        
         for(uint16_t i=0;i<(flen+6);i++)
          {
            sumcheck+=tempData_NM[i];
            addcheck+=sumcheck;
           
          }
          tempData_NM[12]=(uint8_t)sumcheck;
          tempData_NM[13]=(uint8_t)addcheck;

          
					HAL_UART_Transmit_DMA( &huart2, (uint8_t *)tempData_NM, 14);
         
}

Demonstration of communication effect

Anonymous assistant displays current waveform

Summarize

VOFA and the anonymous assistant have their own advantages and disadvantages, and both can support higher baud rates. There is no detailed comparison here, but for engineering applications, as long as the application needs are met. Thanks to VOFA and anonymous authors for sharing these tools, which greatly improves the development efficiency of engineers.

STM32 anonymous assistant improves motor control debugging efficiency (lower computer code and upper computer operation demonstration)