avr: minor work on init code.

avr/modules/uart_hw/init_uart1.asm

@@ -0,0 +1,46 @@
+; ***************************************************************************
+; copyright   : (C) 2025 by Martin Preuss
+; email       : martin@libchipcard.de
+;
+; ***************************************************************************
+; * This file is part of the project "AqHome".                              *
+; * Please see toplevel file COPYING of that project for license details.   *
+; ***************************************************************************
+
+
+
+
+.cseg
+
+
+
+; ---------------------------------------------------------------------------
+; @routine UART_HW_Uart1_Init @global
+;
+; @param Y pointer to interface data in SRAM (see @ref UART_HW_IFACE_OFFS_STATE)
+; @clobbers R16, R17, X
+
+UART_HW_Uart1_Init:
+  rcall UART_HW_InitInterface
+
+  ; set baudrate
+.if clock == 8000000
+  ldi r16, 25 ; (19.2Kb/s at 8MHz)
+  ldi r17, 0
+.endif
+
+.if clock == 1000000
+  ldi r16, 2  ; (19.2Kb/s at 1MHz)
+  ldi r17, 0  
+.endif
+
+  out UBRR1H, r17
+  out UBRR1L, r16
+
+  ; set character format 
+  ldi r16, (1<<USBS1)|(3<<UCSZ10)
+  out UCSR1C, r16
+
+  ret
+; @end
+

avr/modules/uart_hw/raw_uart1.asm

@@ -16,15 +16,15 @@
 
 UART_HW_Uart1_RawInit:
   ; set baudrate
-;.if clock == 8000000
+.if clock == 8000000
-;  ldi r16, 25 ; (19.2Kb/s at 8MHz)
+  ldi r16, 25 ; (19.2Kb/s at 8MHz)
-;  ldi r17, 0
+  ldi r17, 0
-;.endif
+.endif
 
-;.if clock == 1000000
+.if clock == 1000000
   ldi r16, 3  ; (19.2Kb/s at 1MHz)
   ldi r17, 0  
-;.endif
+.endif
 
   sts UBRR1H, r17
   sts UBRR1L, r16