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


.equ UART_HW_MSGNUMINBUF_SIZE          = 8
.equ UART_HW_MSGNUMOUTBUF_SIZE         = 4

.equ UART_HW_FIXEDBUFFERS_NUM          = 6
.equ UART_HW_FIXEDBUFFERS_SIZE         = 32 ; adapt UART_HW_FixedBuffers_Locate if you change this value!



.equ UART_HW_STATE_OFF                 = 0
.equ UART_HW_STATE_IDLE                = 1
.equ UART_HW_STATE_READING             = 2
.equ UART_HW_STATE_WRITING             = 3
.equ UART_HW_STATE_SKIPPING            = 4

.equ UART_HW_IFACE_MSGIDBUF_SIZE       = 8
.equ UART_HW_IFACE_READBUF_SIZE        = 24



.equ UART_HW_IFACE_OFFS_MODE           = 0
.equ UART_HW_IFACE_OFFS_STATUS         = 1
.equ UART_HW_IFACE_OFFS_READBUFFERNUM  = 2  ; num of buffer currently read
.equ UART_HW_IFACE_OFFS_READBUFFERPOS  = 3  ; current pos in readbuffer
.equ UART_HW_IFACE_OFFS_READBUFFERLEFT = 4  ; bytes left to read for current message

.equ UART_HW_IFACE_OFFS_WRITEBUFFERNUM = 5  ; num of buffer currently written from to network
.equ UART_HW_IFACE_OFFS_WRITEBUFFERPTR = 6  ; pointer to next pos in current write buffer to write from (2 bytes)
.equ UART_HW_IFACE_OFFS_WRITEBUFFERLEFT= 8  ; bytes left to write for current message

.equ UART_HW_IFACE_OFFS_RINGBUF_MAX    = 9
.equ UART_HW_IFACE_OFFS_RINGBUF_USED   = 10 ; ringbuffer for incoming chars
.equ UART_HW_IFACE_OFFS_RINGBUF_RDPOS  = 11
.equ UART_HW_IFACE_OFFS_RINGBUF_WRPOS  = 12
.equ UART_HW_IFACE_OFFS_RINGBUF_DATA   = 13

.equ UART_HW_IFACE_OFFS_MSGIDBUF_MAX   = UART_HW_IFACE_OFFS_RINGBUF_DATA+14 ; ringbuffer for ids of outbound messages
.equ UART_HW_IFACE_OFFS_MSGIDBUF_USED  = UART_HW_IFACE_OFFS_RINGBUF_DATA+15 ; ringbuffer for ids of outbound messages
.equ UART_HW_IFACE_OFFS_MSGIDBUF_RDPOS = UART_HW_IFACE_OFFS_RINGBUF_DATA+16
.equ UART_HW_IFACE_OFFS_MSGIDBUF_WRPOS = UART_HW_IFACE_OFFS_RINGBUF_DATA+17
.equ UART_HW_IFACE_OFFS_MSGIDBUF_DATA  = UART_HW_IFACE_OFFS_RINGBUF_DATA+18

.equ UART_HW_IFACE_SIZE                = UART_HW_IFACE_OFFS_MSGIDBUF_DATA+UART_HW_IFACE_MSGIDBUF_SIZE