STM32單片機(jī)矩陣鍵盤邏輯寫的沒(méi)有問(wèn)題，但一直不出功能,求大佬

ID:1119762 · 發(fā)表于 2024-6-13 14:43

STM32矩陣鍵盤邏輯寫的沒(méi)有問(wèn)題，但一直不出功能,求大佬

ID:59202 · 發(fā)表于 2024-6-13 16:28

啥也沒(méi)有能說(shuō)啥

ID:1125104 · 發(fā)表于 2024-6-13 18:21

Many microcontrollers have different locations for accesing the inputs and outputs. For example on ATMEL AVR microcontroler to read or write the logical values to port B you use PORTB. To read the actual phisical value of port B you will need to use PINB. Example: "in r16,PINB" will read the physical bits of port B. This is what you need to use to read the keyboard matrix.

ID:1125104 · 發(fā)表于 2024-6-13 18:25

Maybe you are reading the logical value of the keyboard matrix i/o port instead of reading the phisical value.

On ATMEL AVR microcontroller, to read the logical value of port b for example you use:
in r16,PORTB

To read the actual phisical value of port b you will use:
in r16,PINB

So, in your matrix keyboard you need to read the physical value (the real value), not the logical value from the port.

ID:1125137 · 發(fā)表于 2024-6-13 22:02

不發(fā)原理圖，不發(fā)代碼，誰(shuí)知道你寫的啥啊，一個(gè)矩陣鍵盤能需要什么邏輯

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STM32單片機(jī)矩陣鍵盤邏輯寫的沒(méi)有問(wèn)題，但一直不出功能,求大佬