In the previous three articles, we have introduced the basic principles of temperature sensors and how to monitor circuit board temperature. In many applications, ambient air temperature monitoring is
[i=s]This post was last edited by chrisrh on 2018-12-29 19:46[/i] [size=4][color=#800080]First upload a bookmarked user manual:[/color][/size] [color=#000000][/color] [img]static/image/hrline/5.gif[/i
[size=4] When dealing with practical application problems of RF systems, there are always some very difficult tasks, and matching the different impedances of the cascaded circuits is one of them. In g
[align=left]Each GPIO of E321 can be configured as an external interrupt, which is divided into three groups: EXTI0_1_IRQn, EXTI2_3_IRQn, and EXTI4_15_IRQn. Three interrupt functions are used to proce