add PULLUP for keyboard

This commit is contained in:
cuu
2021-06-12 20:56:18 +08:00
parent 03cf255599
commit 191626d736
5 changed files with 55 additions and 20 deletions

View File

@@ -2,7 +2,6 @@
uint8_t read_io(uint8_t io) {
if(digitalRead(io) == LOW ){
return 0;
}else {