; ***************************************************************************
; 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_READMODE_OFF                = 0
.equ UART_HW_READMODE_IDLE               = 1
.equ UART_HW_READMODE_READING            = 2
.equ UART_HW_READMODE_SKIPPING           = 3
.equ UART_HW_READMODE_MSGRECEIVED        = 4

.equ UART_HW_WRITEMODE_OFF               = 0
.equ UART_HW_WRITEMODE_IDLE              = 16
.equ UART_HW_WRITEMODE_WRITING           = 17
.equ UART_HW_WRITEMODE_WAITBUFFEREMPTY   = 18
.equ UART_HW_WRITEMODE_WRITEBUFFEREMPTY  = 19


.equ UART_HW_STATUS_UNDERRUN_BIT         = 0
.equ UART_HW_STATUS_OVERRUN_BIT          = 1
.equ UART_HW_STATUS_HWERR_BIT            = 2
.equ UART_HW_STATUS_SOFTERR_BIT          = 3
.equ UART_HW_STATUS_ATTN_BIT             = 7


.equ UART_HW_IFACE_OFFS_READ             = NET_IFACE_SIZE
.equ UART_HW_IFACE_OFFS_READMODE         = UART_HW_IFACE_OFFS_READ
.equ UART_HW_IFACE_OFFS_READBUFNUM       = UART_HW_IFACE_OFFS_READ+1
.equ UART_HW_IFACE_OFFS_READBUFPOS_LOW   = UART_HW_IFACE_OFFS_READ+2
.equ UART_HW_IFACE_OFFS_READBUFPOS_HIGH  = UART_HW_IFACE_OFFS_READ+3
.equ UART_HW_IFACE_OFFS_READBUFUSED      = UART_HW_IFACE_OFFS_READ+4
.equ UART_HW_IFACE_OFFS_READBUFLEFT      = UART_HW_IFACE_OFFS_READ+5

.equ UART_HW_IFACE_OFFS_WRITE            = UART_HW_IFACE_OFFS_READBUFLEFT+1
.equ UART_HW_IFACE_OFFS_WRITEMODE        = UART_HW_IFACE_OFFS_WRITE
.equ UART_HW_IFACE_OFFS_WRITEBUFNUM      = UART_HW_IFACE_OFFS_WRITE+1
.equ UART_HW_IFACE_OFFS_WRITEBUFPOS_LOW  = UART_HW_IFACE_OFFS_WRITE+2
.equ UART_HW_IFACE_OFFS_WRITEBUFPOS_HIGH = UART_HW_IFACE_OFFS_WRITE+3
.equ UART_HW_IFACE_OFFS_WRITEBUFUSED     = UART_HW_IFACE_OFFS_WRITE+4
.equ UART_HW_IFACE_OFFS_WRITEBUFLEFT     = UART_HW_IFACE_OFFS_WRITE+5

.equ UART_HW_IFACE_SIZE                  = UART_HW_IFACE_OFFS_WRITEBUFLEFT+1