【NUCLEO-L552ZE Review】+ Various lighting patterns

hujj

【NUCLEO-L552ZE Review】+ Various lighting patterns [Copy link]

The first step of the test is to light up the LED light, which has almost become an unchanging step. I was going to post the lighting and unboxing together, but I encountered the problem of not being able to recognize ST_LINK. I tried every possible way to repeatedly install the drivers I could find, including installing the so-called ST-LINK family bucket, but it was all a nephew holding a lantern to illuminate his uncle. Finally, I searched for a post in the ST32 community. The poster had the same problem and finally solved the problem by upgrading the Keil version. Before this, I also suspected that it might be a problem with the version being too low, because when using CUbeMX to generate the project framework, the option when selecting IDE is V5.27, and it cannot be modified, and I am using V5.25. Today, I downloaded and installed the V5.30 version and checked it again. ST-LINK was clearly visible. It turned out to be a problem with the version being too low.

Version upgraded to V5.30:

Check the download options again, ST-LINK is clearly visible:

After solving the ST-LINK driver burning problem, I encountered a new problem when trying to download:

But I know the cause of the problem, because when I created the first test project, I selected Yes when selecting the safe area. According to the experience of netizens, I should select No (see the figure below). I re-created a test project and it was OK:

Lighting up the LED is a relatively simple problem. I set a global variable, increment it by 1 through the SysTick interrupt handler, and then implement the timing processing in the main loop. The code is as follows:

  while (1)
  {
	  if(ms>499){
	      ms = 0;
		  ledn++;
		  if(ledn>6){
		      ledn = 1;
			  ledm++;
			  if(ledm>2){
			      ledm = 0;
			  }
		  }
		  switch (ledm){
		      case 0:
				  if(ledn%2 == 0)
				      LED_On(0);
				  else
					  LED_Off(0);
				  break;
			  case 1:
				  LED_Off(0);
				  if(ledn > 0)
					  LED_On(ledn);
				  break;
			  case 2:
				  LED_On(0);
				  if(ledn > 0)
					  LED_Off(ledn);
				  break;
			  case 3:
				  break;
			  
		  }
	  }

Here are some pictures from the test:

Here is the recorded animation:

w494143467

I'm glad to see that my brother finally solved it! Haha

hujj

w494143467 posted on 2020-12-17 16:34 I am very happy to see that my brother finally solved it! Haha

This model of board was reviewed in the STM32 community at the beginning of the year, so you can refer to the previous netizens' review posts to learn from their experience and avoid detours.

okhxyyo

ST new product NUCLEO-L552ZE-Q (Cortex-M33)

Summary post: https://bbs.eeworld.com.cn/thread-1152571-1-1.html