mirror of
https://github.com/mcgurk/Arduino-USB-HID-RetroJoystickAdapter
synced 2024-11-13 12:45:01 -05:00
| .. | ||
| 4joy_adapter_old.ino | ||
| 4joy_adapter.ino | ||
| interrupt_test.ino | ||
| README.md | ||
| stuff.ino | ||
| temp.ino | ||
& 'C:\Program Files (x86)\Arduino\hardware\tools\avr\bin\avr-objdump.exe' -S "C:\\Users\\Lehtinen\\AppData\\Local\\Temp\\arduino_build_119176/test.ino.elf" > c:\temp\koe.txt
cli // 1 clock
PORTB = *ptr; // is this atomic? probably, because ptr is 6-bit pointer.
f98: e0 91 26 01 lds r30, 0x0126 ; 0x800126 <__data_end> // 2 clocks
f9c: f0 91 27 01 lds r31, 0x0127 ; 0x800127 <__data_end+0x1> // 2 clocks
fa0: 80 81 ld r24, Z // 1 clock
fa2: 85 b9 out 0x05, r24 ; 5 // 1 clock
sei // 1 clock
500ns
cli
mov r31, r1
mov r30, gpior0
ld r24, Z
out 0x05, r24
sei
375ns
register as variable
- https://forum.arduino.cc/index.php?topic=43760.5
- http://www.nongnu.org/avr-libc/user-manual/FAQ.html#faq_regbind
- volatile register unsigned char my_register asm("r2");