; ***************************************************************************
; 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.   *
; ***************************************************************************


; ***************************************************************************
; code


.cseg



; ---------------------------------------------------------------------------
; @routine flashInitIo
; Send a message
;
; @clobbers r16, r17

flashInitIo:
  rjmp UART_HW_Uart1_RawInit ; (R16, R17)
;@end



; ---------------------------------------------------------------------------
; @routine flashRawSendMsg
; Send a message
;
; @clobbers r16, r17, X

flashRawSendMsg:
  ldi xl, LOW(flashSendBuffer)
  ldi xh, HIGH(flashSendBuffer)
  rjmp UART_HW_Uart1_RawSendPacket ; (r16, r17, X)
; @end



; ---------------------------------------------------------------------------
; @routine flashRawWaitForValidMsg
; Wait for valid incoming msg
;
; @return CFLAG set if okay (packet received), cleared on error
; @clobbers: r16, r17, r18 (r19, r22, X)

flashRawWaitForValidMsg:
  rcall UART_HW_Uart1_EnableRawRecv     ; (R16)
flashRawWaitForValidMsg_loop:
    ldi xl, LOW(flashRecvBuffer)
    ldi xh, HIGH(flashRecvBuffer)
    ldi r16, COM2_MAINTENANCE_ADDR
    ldi r17, FLASH_RECVBUFFER_MAXLEN-3
    ldi r18, 10                         ; 10s
    rcall UART_HW_Uart1_RawRecvPacket   ; (r16, r17, r18, r19, r22, X)
    brcc flashRawWaitForValidMsg_error
    rcall com2CheckMessageInBuffer      ; (R16, R17, R18, R19, R20, X)
  brcc flashRawWaitForValidMsg_loop     ; invalid msg, try next
  rcall UART_HW_Uart1_DisableRawRecv    ; (R16)
  sec
  ret
flashRawWaitForValidMsg_error:
  rcall UART_HW_Uart1_DisableRawRecv    ; (R16)
  clc
  ret
; @end