168 lines
3.9 KiB
NASM
168 lines
3.9 KiB
NASM
; ***************************************************************************
|
|
; 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. *
|
|
; ***************************************************************************
|
|
|
|
|
|
|
|
.cseg
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine NET_Interface_Init @global
|
|
;
|
|
; @param Y pointer to interface data in SRAM
|
|
; @clobbers R16, R17, X
|
|
|
|
NET_Interface_Init:
|
|
mov xl, yl
|
|
mov xh, yh
|
|
ldi r17, NET_IFACE_SIZE
|
|
clr r16
|
|
rcall Utils_FillSram ; (R17, X)
|
|
|
|
push yl
|
|
push yh
|
|
adiw yh:yl, NET_IFACE_OFFS_OUTMSGRINGBUF
|
|
ldi r16, NET_IFACE_OUTMSGBUF_SIZE
|
|
rcall RingBufferY_Init
|
|
pop yh
|
|
pop yl
|
|
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine NET_Interface_AddOutgoingMsgNum @global
|
|
;
|
|
; @return CFLAG on success, cleared on error
|
|
; @param r16 byte to write
|
|
; @param Y pointer to start of interface data
|
|
; @clobbers R17, R18, X
|
|
|
|
NET_Interface_AddOutgoingMsgNum:
|
|
push yl
|
|
push yh
|
|
adiw yh:yl, NET_IFACE_OFFS_OUTMSGRINGBUF
|
|
rcall RingBufferY_WriteByteGuarded ; R17, R18, X
|
|
pop yh
|
|
pop yl
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine NET_Interface_AddOrReleaseOutMsg @global
|
|
;
|
|
; Try to add given msg to the given interface's list of outbound messages,
|
|
; if that fails release the given message (@ref NET_Buffer_ReleaseByNum)
|
|
;
|
|
; @return CFLAG on success, cleared on error
|
|
; @param r16 byte to write
|
|
; @param Y pointer to start of interface data
|
|
; @clobbers R16, R17, R18, X
|
|
|
|
NET_Interface_AddOrReleaseOutMsg:
|
|
rcall NET_Interface_AddOutgoingMsgNum ; (R17, R18, X)
|
|
brcs NET_Interface_AddOrReleaseOutMsg_ret
|
|
rcall NET_Buffer_ReleaseByNum ; (R16, X)
|
|
clc
|
|
NET_Interface_AddOrReleaseOutMsg_ret:
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine NET_Interface_GetNextOutgoingMsgNum @global
|
|
;
|
|
; @return CFLAG on success, cleared on error
|
|
; @return R16 byte read
|
|
; @param Y pointer to start of interface data
|
|
; @clobbers R17, R18, X
|
|
|
|
NET_Interface_GetNextOutgoingMsgNum:
|
|
push yl
|
|
push yh
|
|
adiw yh:yl, NET_IFACE_OFFS_OUTMSGRINGBUF
|
|
rcall RingBufferY_ReadByteGuarded ; R17, R18, X
|
|
pop yh
|
|
pop yl
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine NET_Interface_PeekNextOutgoingMsgNum @global
|
|
;
|
|
; @return CFLAG on success, cleared on error
|
|
; @return R16 byte read
|
|
; @param Y pointer to start of interface data
|
|
; @clobbers R17, R18, X
|
|
|
|
NET_Interface_PeekNextOutgoingMsgNum:
|
|
push yl
|
|
push yh
|
|
adiw yh:yl, NET_IFACE_OFFS_OUTMSGRINGBUF
|
|
rcall RingBufferY_PeekByteGuarded ; R17, R18, X
|
|
pop yh
|
|
pop yl
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine NET_Interface_GetNumOfOutgoingMsgNums @global
|
|
;
|
|
; @return CFLAG on success, cleared on error
|
|
; @return R16 byte read
|
|
; @param Y pointer to start of interface data
|
|
; @clobbers none
|
|
|
|
NET_Interface_GetNumOfOutgoingMsgNums:
|
|
ldd r16, Y+(NET_IFACE_OFFS_OUTMSGRINGBUF+RINGBUFFERY_OFFS_USED)
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine NET_Interface_IncCounter16 @global
|
|
;
|
|
; @param Y pointer to start of interface data
|
|
; @param R16 offset to Y for counter to increment
|
|
; @clobbers R24, R25
|
|
|
|
NET_Interface_IncCounter16:
|
|
add yl, r16
|
|
adc yh, r16
|
|
sub yh, r16
|
|
ld r24, Y+
|
|
ld r25, Y
|
|
sbiw yh:yl, 1
|
|
adiw r25:r24, 1
|
|
breq NET_Interface_IncCounter16_end
|
|
st Y+, r24
|
|
st Y, r25
|
|
sbiw yh:yl, 1
|
|
NET_Interface_IncCounter16_end:
|
|
sub yl, r16
|
|
sbc yh, r16
|
|
add yh, r16
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
|
|
|