[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
The car fuse box (also known as the POWER DISTRIBUTION CENTER ) is a current distribution protection device from the battery to various loads. At present, the internal temperature of the UEC fuse box
?Detection of fixed resistors. A? Connect two test leads (regardless of positive and negative) to the two ends of the resistor to measure the actual resistance value. In order to improve the measureme