; ***************************************************************************
; Source file for base system node on AtTiny 84
;
; This is for the maintenance system (i.e. the flash loader).
;
; All definitions and changes should go into this file.
; ***************************************************************************

.equ clock=1000000 ; Define the clock frequency

.nolist
.include "include/tn84def.inc" ; Define device ATtiny84
.list

.include "n16_defs.asm"
.include "defs_all.asm"



; ***************************************************************************
; defines

; ---------------------------------------------------------------------------
; generic

.include "common/utils_wait.asm"
.include "modules/com2/defs.asm"
.include "modules/comproto/defs.asm"



; ---------------------------------------------------------------------------
; firmware settings

.equ FIRMWARE_VERSION_MAJOR       = 0
.equ FIRMWARE_VERSION_MINOR       = 0
.equ FIRMWARE_VERSION_PATCHLEVEL  = 1



; ---------------------------------------------------------------------------
; LED

.equ LED_DDR             = DDRA
.equ LED_PORT            = PORTA
.equ LED_PIN             = PINA
.equ LED_PINNUM          = PORTA3


; ***************************************************************************
; code segment

.cseg
.org 0x0000



; ---------------------------------------------------------------------------
; Reset and interrupt vectors
;  rjmp start ; Reset vector
  rjmp main ; Reset vector
  reti ; EXT_INT0
  reti ; PCI0
  reti ; PCI1
  reti ; WATCHDOG
  reti ; ICP1
  reti ; OC1A
  reti ; OC1B
  reti ; OVF1
  reti ; OC0A
  reti ; OC0B
  reti ; OVF0
  reti ; ACI
  reti ; ADCC
  reti ; ERDY
  reti ; USI_STR
  reti ; USI_OVF


devInfoBlock:        ; 12 bytes
devInfoManufacturer: .db 'A', 'Q', 'U', 'A'
devInfoId:           .db 'N', 0
devInfoVersion:      .db 16, 0                 ; version, revision
firmwareVersion:     .db FIRMWARE_VARIANT_BOOT, FIRMWARE_VERSION_MAJOR
                     .db FIRMWARE_VERSION_MINOR, FIRMWARE_VERSION_PATCHLEVEL

firmwareStart:   rjmp main ; will be overwritten when flashing



; ***************************************************************************
; main code


.org BOOTLOADER_ADDR


main:
  rjmp bootLoader ; this routine is in modules/flash/proto.asm




; ***************************************************************************
; includes

.include "modules/uart_bitbang/bytelevel.asm"
.include "modules/uart_bitbang/packetlevel.asm"
.include "modules/com2/crc.asm"
.include "common/crc8.asm"
.include "common/utils_wait_fixed.asm"
.include "common/utils_copy_from_flash.asm"
.include "common/utils_copy_sdram.asm"
.include "modules/flash/bootloader.asm"
.include "modules/flash/flash.asm"
.include "modules/flash/recv.asm"
.include "modules/flash/send.asm"
.include "modules/flash/wait.asm"
.include "modules/flash/hdl_flash_start.asm"
.include "modules/flash/hdl_flash_data.asm"
.include "modules/flash/hdl_flash_end.asm"
.include "modules/flash/flash_rsp.asm"
.include "modules/flash/flash_ready.asm"


#if 0
debugStop:
  cli
  sbi LED_SIMPLE_DDR, LED_SIMPLE_PINNUM  ; out
  cbi LED_SIMPLE_PORT, LED_SIMPLE_PINNUM ; on
  
  cbi COM_ATTN_DDR, COM_ATTN_PIN          ; set ATTN port as input
  cbi COM_ATTN_OUTPUT, COM_ATTN_PIN       ; disable internal pullup for ATTN
  
  ldi r18, 0
test_loop1:
    ldi r16, 100
test_loop2:
      ldi r17, 100
test_loop3:
        Utils_WaitNanoSecs 10000, 0, r22
        dec r17
      brne test_loop3
      dec r16
    brne test_loop2
    sbi LED_SIMPLE_PORTIN, LED_SIMPLE_PINNUM ; toggle
    inc r18
    mov r19, r18
    andi r19, 1
    brne test1
    sbi COM_ATTN_DDR, COM_ATTN_PIN
    cbi COM_ATTN_OUTPUT, COM_ATTN_PIN
    rjmp test_loop1
test1:
    cbi COM_ATTN_DDR, COM_ATTN_PIN
    cbi COM_ATTN_OUTPUT, COM_ATTN_PIN
    
  rjmp test_loop1
#endif