mtk--gpio调试

gpio 调试 –    #adb shell –    #cd /sys/devices/virtual/misc/mtgpio/   ▪         check all GPIO setting  index: mode(0~7) pullselect(0 low,1 high) din(1 en) dout(1 en) pullenable(1 en) dir(0 in, 1 out) dinverse(1 en) -     #cat pin ▪         check out pin setting(take GPIO88 for example) -     #echo –r1 88 > pin ▪         set GPIO88 paremeter [pin]:[mode] [pullsel] [din] [dout] [pullen] [dir] [dinv] -     #echo -w=88:0 0 0 1 1 1 0 > pin ▪         set GPIO88 mode 3 -     #echo -wmode 88 3 > pin ▪         set GPIO88 dir out -     #echo -wdir 88 1 > pin ▪         set GPIO88 dir in -     #echo -wdir 88 0 > pin ▪         set GPIO88 push enable -     #echo -wpen 88 1 > pin ▪         set GPIO88 push up -     #echo -wpsel 88 1 > pin ▪         set GPIO88 out high -     #echo -wdout 88 1 > pin   ▪         set GPIO55 out 26M clock clk: echo -ms [num] [src] [div] > pin -     #echo -w=55:3 0 0 1 1 1 0 > pin -     #echo -ms 3 2 1 > pin