73 lines
2.2 KiB
NASM
73 lines
2.2 KiB
NASM
; ***************************************************************************
|
|
; copyright : (C) 2023 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. *
|
|
; ***************************************************************************
|
|
|
|
|
|
; ***************************************************************************
|
|
;
|
|
; AtTiny84
|
|
; --------
|
|
; VCC 1 14 GND
|
|
; PB0 2 13 PA0 COM_ATTN1
|
|
; PB1 3 12 PA1 COM-DATA1
|
|
; /RESET PB3 4 11 PA2
|
|
; COM_ATTN2 PB2 5 10 PA3 LED
|
|
; COM_DATA2 PA7 6 9 PA4
|
|
; PA6 7 8 PA5
|
|
; --------
|
|
;
|
|
; ***************************************************************************
|
|
|
|
|
|
|
|
.equ BOOTLOADER_ADDR = 0xd00
|
|
|
|
.equ FIRMWARE_VARIANT_BOOT = 0
|
|
.equ FIRMWARE_VARIANT_ROUTER = 1
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; LED module
|
|
|
|
.equ LED_SIMPLE_DDR = DDRA
|
|
.equ LED_SIMPLE_PORT = PORTA
|
|
.equ LED_SIMPLE_PORTIN = PINA
|
|
.equ LED_SIMPLE_PINNUM = PORTA3
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; COM module
|
|
|
|
.equ COM_BIT_LENGTH = 52000 ; 104000ns=9600, 52000ns=19200, 26000ns=38400
|
|
.equ COM_HALFBIT_LENGTH = 26000 ; see https://de.wikipedia.org/wiki/Universal_Asynchronous_Receiver_Transmitter
|
|
|
|
.equ COM_DATA_DDR = DDRA
|
|
.equ COM_DATA_INPUT = PINA
|
|
.equ COM_DATA_OUTPUT = PORTA
|
|
.equ COM_DATA_PIN = PORTA1
|
|
|
|
.equ COM_ATTN_DDR = DDRA
|
|
.equ COM_ATTN_INPUT = PINA
|
|
.equ COM_ATTN_OUTPUT = PORTA
|
|
.equ COM_ATTN_PIN = PORTA0
|
|
|
|
.equ COM_DATA2_DDR = DDRA
|
|
.equ COM_DATA2_INPUT = PINA
|
|
.equ COM_DATA2_OUTPUT = PORTA
|
|
.equ COM_DATA2_PIN = PORTA7
|
|
|
|
.equ COM_ATTN2_DDR = DDRB
|
|
.equ COM_ATTN2_INPUT = PINB
|
|
.equ COM_ATTN2_OUTPUT = PORTB
|
|
.equ COM_ATTN2_PIN = PORTB2
|
|
|
|
|
|
|