[i=s]This post was last edited by sjtitr on 2014-2-20 00:51[/i] Still, let's review the conception post first: [url=https://bbs.eeworld.com.cn/thread-429514-1-1.html]Showing the design plan + Uncle Ma...
Use STM32F103 and its GPIOE2, 3, 4, 5 and 6 ports as keyboard input. The initialization program is: /* Configure EXTI line */ EXTI->EMR = 0x7C; //Interrupt MASK bit of line 2,3,4,5,6 EXTI->IMR = 0x7C;...
[b]1. IEC printed board design standards[/b]The earliest IEC printed board design standards were 60326-3 "Design and Use of Printed Boards" published in 1980, and the 1991 version of IEC60326-3 "Desig...
stm32/stm8
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