:'( There are several integrated chips that look like switch tubes, but the manufacturer on them is erased. I only know some words written on them: 1.B3T7S 2.N4U3W 3.8A78. I can't find any information
[size=4][color=#000000][backcolor=white] In actual applications, when CH340 is used with other ICs such as MCU, if one of the two devices directly connected by the serial port does not need power to w
I am using the Bluetooth module HC-05. When I send an AT command, it returns ERROR(0). The baud rate is 38400. The program is as follows: USART_OUT(0X41); //A USART_OUT(0X54); //T USART_OUT(0X0D); USA
In Chapter 6, it is said that the function rt_hw_stack_init is defined in cpuport.c, but it does not mention where it is declared. However, this function is called in the rtthread.c file. This content
[indent][align=left]Purpose:[/align][indent][align=left][color=#000000]This example shows the hardware of AVR microcontroller and PC serial port communication, and the connection with universal integr