diff options
| author | rodri <rgl@antares-labs.eu> | 2021-06-05 11:10:23 +0000 |
|---|---|---|
| committer | rodri <rgl@antares-labs.eu> | 2021-06-05 11:10:23 +0000 |
| commit | edf5f145013aa28ffbc7f19f874cd489a92f8449 (patch) | |
| tree | 05a7dfdae1b63a79bdfbb1fab84af35a51b5b99c /asm/blinkdelay/blink.s | |
| download | avrtoys-edf5f145013aa28ffbc7f19f874cd489a92f8449.tar.gz avrtoys-edf5f145013aa28ffbc7f19f874cd489a92f8449.tar.bz2 avrtoys-edf5f145013aa28ffbc7f19f874cd489a92f8449.zip | |
Diffstat (limited to 'asm/blinkdelay/blink.s')
| -rw-r--r-- | asm/blinkdelay/blink.s | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/asm/blinkdelay/blink.s b/asm/blinkdelay/blink.s new file mode 100644 index 0000000..30219b1 --- /dev/null +++ b/asm/blinkdelay/blink.s @@ -0,0 +1,24 @@ +.include "dat.h" + +.globl main +main: + ldi r16, 1<<DDRB5 + ldi r17, 0<<PORTB5 + out DDRB, r16 + out PORTB, r17 +loop: + /* delay loop */ + ldi r18, 82 + ldi r19, 43 + ldi r20, 0 +l1: + dec r20 + brne l1 + dec r19 + brne l1 + dec r18 + brne l1 + in r16, PORTB + com r16 + out PORTB, r16 + rjmp loop |