335 lines
7.8 KiB
NASM
335 lines
7.8 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. *
|
|
; ***************************************************************************
|
|
|
|
|
|
.equ TTYONUART1_SKIPTIME = 2
|
|
.equ TTYONUART1_IFACENUM = 2
|
|
|
|
|
|
.dseg
|
|
|
|
ttyOnUart1_iface: .byte UART_HW_IFACE_SIZE
|
|
|
|
|
|
|
|
.cseg
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine TtyOnUart1_Init @global
|
|
;
|
|
; @clobbers Y (R16, R17, X)
|
|
|
|
TtyOnUart1_Init:
|
|
ldi yl, LOW(ttyOnUart1_iface)
|
|
ldi yh, HIGH(ttyOnUart1_iface)
|
|
rcall UART_HW_Uart1_Init ; (R16, R17, X)
|
|
ldi r16, TTYONUART1_IFACENUM
|
|
std Y+UART_HW_IFACE_OFFS_IFACENUM, r16
|
|
ldi r16, UART_HW_MODE_IDLE | UART_HW_MODE_W_IDLE ; start in full idle mode
|
|
std Y+UART_HW_IFACE_OFFS_MODE, r16
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine TtyOnUart1_Periodically @global
|
|
;
|
|
; @clobbers R16, Y
|
|
|
|
TtyOnUart1_Periodically:
|
|
ldi yl, LOW(ttyOnUart1_iface)
|
|
ldi yh, HIGH(ttyOnUart1_iface)
|
|
|
|
ldd r16, Y+UART_HW_IFACE_OFFS_READTIMER
|
|
inc r16
|
|
breq TtyOnUart1_Periodically_l1
|
|
std Y+UART_HW_IFACE_OFFS_READTIMER, r16
|
|
TtyOnUart1_Periodically_l1:
|
|
ldd r16, Y+UART_HW_IFACE_OFFS_WRITETIMER
|
|
inc r16
|
|
breq TtyOnUart1_Periodically_l2
|
|
std Y+UART_HW_IFACE_OFFS_WRITETIMER, r16
|
|
TtyOnUart1_Periodically_l2:
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine TtyOnUart1_RxCharIsr @global @isr
|
|
;
|
|
; @clobbers none
|
|
|
|
TtyOnUart1_RxCharIsr:
|
|
push r15
|
|
in r15, SREG
|
|
push r16
|
|
push r17
|
|
push r18
|
|
push xl
|
|
push xh
|
|
push yl
|
|
push yh
|
|
ldi yl, LOW(ttyOnUart1_iface)
|
|
ldi yh, HIGH(ttyOnUart1_iface)
|
|
rcall UART_HW_Uart1_RxCharIsr ; (R16, R17, R18, X)
|
|
pop yh
|
|
pop yl
|
|
pop xh
|
|
pop xl
|
|
pop r18
|
|
pop r17
|
|
pop r16
|
|
out SREG, r15
|
|
pop r15
|
|
reti
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine TtyOnUart1_TxUdreIsr @global @isr
|
|
;
|
|
; @clobbers none
|
|
|
|
TtyOnUart1_TxUdreIsr:
|
|
push r15
|
|
in r15, SREG
|
|
push r16
|
|
push r17
|
|
push r18
|
|
push xl
|
|
push xh
|
|
push yl
|
|
push yh
|
|
ldi yl, LOW(ttyOnUart1_iface)
|
|
ldi yh, HIGH(ttyOnUart1_iface)
|
|
rcall UART_HW_Uart1_TxUdreIsr ; (R16, R17, R18, X)
|
|
pop yh
|
|
pop yl
|
|
pop xh
|
|
pop xl
|
|
pop r18
|
|
pop r17
|
|
pop r16
|
|
out SREG, r15
|
|
pop r15
|
|
reti
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine TtyOnUart1_TxCharIsr @global @isr
|
|
;
|
|
; @clobbers none
|
|
|
|
TtyOnUart1_TxCharIsr:
|
|
push r15
|
|
in r15, SREG
|
|
push r16
|
|
push r17
|
|
push r18
|
|
push xl
|
|
push xh
|
|
push yl
|
|
push yh
|
|
ldi yl, LOW(ttyOnUart1_iface)
|
|
ldi yh, HIGH(ttyOnUart1_iface)
|
|
rcall UART_HW_Uart1_TxCharIsr ; (R16, R17, R18, X)
|
|
pop yh
|
|
pop yl
|
|
pop xh
|
|
pop xl
|
|
pop r18
|
|
pop r17
|
|
pop r16
|
|
out SREG, r15
|
|
pop r15
|
|
reti
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine TtyOnUart1_Run @global
|
|
;
|
|
; @clobbers all
|
|
|
|
TtyOnUart1_Run:
|
|
ldi yl, LOW(ttyOnUart1_iface)
|
|
ldi yh, HIGH(ttyOnUart1_iface)
|
|
|
|
rcall ttyOnUart1RunWriteModes
|
|
rcall ttyOnUart1RunReadModes
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine ttyOnUart1RunWriteModes
|
|
;
|
|
; @clobbers all, !Y
|
|
|
|
ttyOnUart1RunWriteModes:
|
|
ldd r16, Y+UART_HW_IFACE_OFFS_MODE ; handle write functions
|
|
cbr r16, UART_HW_MODE_READMASK
|
|
cpi r16, UART_HW_MODE_W_IDLE
|
|
breq ttyOnUart1RunWIdle
|
|
cpi r16, UART_HW_MODE_WRITING
|
|
breq ttyOnUart1RunWriting
|
|
cpi r16, UART_HW_MODE_WAITBUFFEREMPTY
|
|
breq ttyOnUart1RunWaitBufferEmpty
|
|
cpi r16, UART_HW_MODE_WRITEBUFFEREMPTY
|
|
breq ttyOnUart1RunWriteBufferEmpty
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine ttyOnUart1RunWIdle
|
|
;
|
|
; @clobbers all, !Y
|
|
|
|
ttyOnUart1RunWIdle:
|
|
rcall UART_HW_InterfaceGetNextOutgoingMsgNum ; (R17, R18, X)
|
|
brcc ttyOnUart1RunWIdle_end
|
|
rcall UART_HW_Interface_WriteSetBuffer ; (r16, r19, X)
|
|
ldd r16, Y+UART_HW_IFACE_OFFS_MODE
|
|
cbr r16, UART_HW_MODE_WRITEMASK
|
|
ori r16, UART_HW_MODE_WRITING
|
|
std Y+UART_HW_IFACE_OFFS_MODE, r16
|
|
rcall ttyOnUart1RunWriting ; fill ringbuffer
|
|
rcall UART_HW_Uart1_StartTx ; enable transceiver and interrupts
|
|
ttyOnUart1RunWIdle_end:
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine ttyOnUart1RunWriting
|
|
;
|
|
; @clobbers all, !Y
|
|
|
|
ttyOnUart1RunWriting:
|
|
rjmp UART_HW_Interface_RunWriting ; (R16, R17, R18, R19, R20, R21, X)
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine ttyOnUart1RunWaitBufferEmpty
|
|
;
|
|
; @clobbers all, !Y
|
|
|
|
ttyOnUart1RunWaitBufferEmpty:
|
|
ldd r16, Y+UART_HW_IFACE_OFFS_STATUS
|
|
sbrs r16, UART_HW_STATUS_UNDERRUN_BIT ; underrun bit set?
|
|
ret ; return if bit still clear
|
|
cbr r16, (1<<UART_HW_STATUS_UNDERRUN_BIT)
|
|
std Y+UART_HW_IFACE_OFFS_STATUS, r16
|
|
ldd r16, Y+UART_HW_IFACE_OFFS_MODE ; change mode to WRITEBUFFEREMPTY and go handle that
|
|
cbr r16, UART_HW_MODE_WRITEMASK
|
|
ori r16, UART_HW_MODE_WRITEBUFFEREMPTY
|
|
std Y+UART_HW_IFACE_OFFS_MODE, r16
|
|
rjmp ttyOnUart1RunWriteBufferEmpty
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine ttyOnUart1RunWriteBufferEmpty
|
|
;
|
|
; @clobbers all, !Y
|
|
|
|
ttyOnUart1RunWriteBufferEmpty:
|
|
ldd r16, Y+UART_HW_IFACE_OFFS_MODE
|
|
cbr r16, UART_HW_MODE_WRITEMASK
|
|
ori r16, UART_HW_MODE_W_IDLE
|
|
std Y+UART_HW_IFACE_OFFS_MODE, r16
|
|
rcall UART_HW_Uart1_StopTx ; disable transceiver and interrupts
|
|
rjmp ttyOnUart1RunWIdle
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine ttyOnUart1RunReadModes
|
|
;
|
|
; @clobbers all, !Y
|
|
|
|
ttyOnUart1RunReadModes:
|
|
ldd r16, Y+UART_HW_IFACE_OFFS_MODE ; handle read functions
|
|
cbr r16, UART_HW_MODE_WRITEMASK
|
|
cpi r16, UART_HW_MODE_IDLE
|
|
breq ttyOnUart1RunIdle
|
|
cpi r16, UART_HW_MODE_READING
|
|
breq ttyOnUart1RunReading
|
|
cpi r16, UART_HW_MODE_SKIPPING
|
|
breq ttyOnUart1RunSkipping
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine ttyOnUart1RunIdle
|
|
;
|
|
; @clobbers all, !Y
|
|
|
|
ttyOnUart1RunIdle:
|
|
rcall UART_HW_Uart1_StartRx
|
|
ldd r16, Y+UART_HW_IFACE_OFFS_MODE
|
|
cbr r16, UART_HW_MODE_READMASK
|
|
ori r16, UART_HW_MODE_READING
|
|
std Y+UART_HW_IFACE_OFFS_MODE, r16
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine ttyOnUart1RunReading
|
|
;
|
|
; @clobbers all, !Y
|
|
|
|
ttyOnUart1RunReading:
|
|
rjmp UART_HW_Interface_RunRead ; (R16, R17, R18, R18, R19, R20, R21, X)
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine ttyOnUart1RunSkipping
|
|
;
|
|
; @clobbers all, !Y
|
|
|
|
ttyOnUart1RunSkipping:
|
|
rcall UART_HW_Uart1_Flush ; (R16)
|
|
ldd r16, Y+UART_HW_IFACE_OFFS_READTIMER
|
|
cpi r16, TTYONUART1_SKIPTIME
|
|
brcs ttyOnUart1RunSkipping_end
|
|
ldd r16, Y+UART_HW_IFACE_OFFS_MODE
|
|
cbr r16, UART_HW_MODE_READMASK
|
|
ori r16, UART_HW_MODE_READING
|
|
std Y+UART_HW_IFACE_OFFS_MODE, r16
|
|
ttyOnUart1RunSkipping_end:
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
|
|
|