The GPRS of the sim300c I debugged can send data to the PC on the public network, but the module cannot receive data sent by the PC! The software on the PC uses the . Can someone give me some advice?
In fact, we should add OSIntEnter and OSIntExit functions to any interrupt service function. This is because UCOSII is a preemptive kernel. After the interrupt service subroutine runs, the system will
I have a board using stm8 105c6. I can't remember how many times I've burned it. It should be almost 10k times. Recently, I found I2C read and write errors. I touched the MCU with my finger and it was
I've been debugging 5545 recently, using an internal reference, and the output is CMOS 2's complement. However, its output clock is sometimes present and sometimes absent, and the voltage meets the re
I used Cadence Allegro to make a double-sided board. I want to print it online, but I don't know what files I need to produce? Also, what are the test points and mark points on the PCB board? Are they
I have a 2410 motherboard and an 8900 network card. There were no problems before, but recently it stopped working when I used DNW to download the WinCE image file. I changed to another machine and it