How to check the variable waveform when debugging the program? Look here

When we debug the single chip program , You often need to view the value of a variable or array , In general , Can pass “Add xxx to Watch” Check it out. , Or view the memory directly . But sometimes , such as ADC When sampling , It is not intuitive to simply look at the value of variables , It is very convenient to view the waveform changes of the whole array .

There are many ways to view waveforms , It is transmitted to the upper computer through the serial port to view 《 Serial port waveform display software SerialChart Use 》, Or through the debugging tool 《Jlink One of the skills RTT and J-Scope》.

Today, let's introduce another way to view waveforms , A debugging assistant software ：Keil Array Visualization. Just look at the name , The software is compatible with Keil The use of .

The software is very convenient to use , First of all, configure Keil. stay Edit->Configuration Under menu , Enable the options in the following figure .

Then connect the emulator , Burn the program , Enter debugging state .

Open software , Enter the port number , Click to connect , The following will prompt whether the connection is successful .

After successful connection , Enter the name or address of the variable you want to view （16 Base address ）; Enter the size of the variable to be viewed （ The size is in bytes ）; Select data type ; Select byte order （STM32 In small end format ）. Then click read to view the waveform . You can also enter the interval for automatic reading , Click read , Start automatic reading .

With ADC Sampling as an example , The sampled data is stored in ADC_Buf Array , The array length is 128, The data type is short,0.5 Read once per second , The waveform diagram is as follows: ：

The software also supports waveform scaling 、 Data export and other functions .

Download link ：

link ：https://pan.baidu.com/s/139dSa9ynRx4kiBzTKKwhSw

Extraction code ：m4ph

In fact, the software is also based on Keil Provided interface development , Friends who are interested in exploring by themselves can see here ：

https://developer.arm.com/documentation/kan198/latest/

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