From: hackbard <hackbard>
Date: Sat, 6 Dec 2003 01:35:21 +0000 (+0000)
Subject: some uart transmit test
X-Git-Url: https://hackdaworld.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a344f7491c24124eb49d6de2374f0586e2d2799a;p=my-code%2Fatmel.git

some uart transmit test
---

diff --git a/beginners/test_uart.asm b/beginners/test_uart.asm
index 53974a3..815f109 100644
--- a/beginners/test_uart.asm
+++ b/beginners/test_uart.asm
@@ -1,17 +1,39 @@
 ; specify device
-.DEVICE AT90S2313
+.include "../include/2313def.inc"
 
 ; baudrate einstellen
 ldi r16, 11 ; "38400 bps wert" in r16
-out 0x09, r16 ; write to uart baudrate register
-sbi 0x0a, 3 ; enable tx at uart control register
+out UBRR, r16 ; write to uart baudrate register
+sbi UCR, TXEN ; enable tx at uart control register
 
 ; transmit 0x23 all the fucking time ...
 ldi r16, 0x23 ; load 0x23 to register
-out 0x0c, r16 ; write that to uart data register port
+out UDR, r16 ; write that to uart data register port
 LOOP:
-sbis 0x0b, 5
+sbis USR, UDRE
 rjmp LOOP
-out 0x0c, r16
+ldi r16, 0x0a
+out UDR, r16
+rjmp LOOP_H
+
+LOOP_H:
+sbis USR, UDRE
+rjmp LOOP_H
+ldi r16, 0x68
+out UDR, r16
+rjmp LOOP_D
+
+LOOP_D:
+sbis USR, UDRE
+rjmp LOOP_D
+ldi r16, 0x64
+out UDR, r16
+rjmp LOOP_W
+
+LOOP_W:
+sbis USR, UDRE
+rjmp LOOP_W
+ldi r16, 0x77
+out UDR, r16
 rjmp LOOP