avr: consolidated uart_hw module
This commit is contained in:
Martin Preuss
@@ -30,10 +30,10 @@ comOnUart0_iface: .byte UART_HW_IFACE_SIZE
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ComOnUart0_Init:
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ldi yl, LOW(comOnUart0_iface)
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ldi yh, HIGH(comOnUart0_iface)
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rcall UART_HW_Uart0_SetAttnInput ; (none)
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rcall comOnUart0SetAttnInput ; (none)
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rcall UART_HW_Interface_Init ; (R16, R17, X)
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rcall UART_HW_Uart0_Init ; (R16, R17, X)
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rcall comOnUart0Init ; (R16, R17, X)
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ldi r16, COMONUART0_IFACENUM
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std Y+NET_IFACE_OFFS_IFACENUM, r16
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@@ -92,7 +92,7 @@ ComOnUart0_RxCharIsr:
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push yh
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ldi yl, LOW(comOnUart0_iface)
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ldi yh, HIGH(comOnUart0_iface)
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rcall UART_HW_Uart0_RxCharIsr ; (R16, R17, R18, R24, R25, X)
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rcall comOnUart0RxCharIsr ; (R16, R17, R18, R24, R25, X)
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pop yh
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pop yl
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pop xh
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@@ -125,7 +125,7 @@ ComOnUart0_TxUdreIsr:
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push yh
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ldi yl, LOW(comOnUart0_iface)
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ldi yh, HIGH(comOnUart0_iface)
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rcall UART_HW_Uart0_TxUdreIsr ; (R16, R17, X)
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rcall comOnUart0TxUdreIsr ; (R16, R17, X)
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pop yh
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pop yl
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pop xh
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@@ -156,7 +156,7 @@ ComOnUart0_TxCharIsr:
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push yh
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ldi yl, LOW(comOnUart0_iface)
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ldi yh, HIGH(comOnUart0_iface)
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rcall UART_HW_Uart0_TxCharIsr ; (R16, R17, R18, X)
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rcall comOnUart0TxCharIsr ; (R16, R17, R18, X)
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pop yh
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pop yl
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pop xh
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@@ -249,34 +249,34 @@ comOnUart0EnterReading_okay:
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std Y+UART_HW_IFACE_OFFS_READMODE, r16
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clr r16
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std Y+NET_IFACE_OFFS_READTIMER, r16
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rcall UART_HW_Uart0_StartRx ; R16
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rcall comOnUart0StartRx ; R16
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine ComOnUart0_SendBuffer @global
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; @routine comOnUart0SendBuffer @global
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;
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; @param Y pointer to interface data in SRAM
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; @clobbers R16, R17
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ComOnUart0_SendBuffer:
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comOnUart0SendBuffer:
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push r15
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in r15, SREG
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cli
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ldd r17, Y+UART_HW_IFACE_OFFS_WRITEMODE
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cpi r17, UART_HW_WRITEMODE_IDLE
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breq ComOnUart0_SendBuffer_setBuffer
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breq comOnUart0SendBuffer_setBuffer
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out SREG, r15
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pop r15
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clc
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ret
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ComOnUart0_SendBuffer_setBuffer:
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comOnUart0SendBuffer_setBuffer:
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rcall UART_HW_Interface_SetWriteBuffer ; (R17)
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ldi r17, UART_HW_WRITEMODE_WRITING
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std Y+UART_HW_IFACE_OFFS_WRITEMODE, r17
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rcall UART_HW_Uart0_StartTx ; (R16)
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rcall comOnUart0StartTx ; (R16)
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pop r15
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out SREG, r15
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sec
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@@ -363,12 +363,12 @@ comOnUart0RunWriteIdle:
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sbis COM_ATTN_INPUT, COM_ATTN_PIN ; ATTN low?
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rjmp comOnUart0RunWriteIdle_end ; yes, line busy, jmp
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rcall UART_HW_Uart0_SetAttnLow ; reserve bus as soon as possible
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rcall comOnUart0SetAttnLow ; reserve bus as soon as possible
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Utils_WaitNanoSecs COM_BIT_LENGTH, 0, r22 ; wait for one bit duration
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Utils_WaitNanoSecs COM_BIT_LENGTH, 0, r22 ; wait for one bit duration
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rcall NET_Buffer_Locate ; (R17)
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rcall ComOnUart0_SendBuffer ; (R16, R17)
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rcall comOnUart0SendBuffer ; (R16, R17)
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rcall NET_Interface_GetNextOutgoingMsgNum ; take msg from queue (R17, R18, X)
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comOnUart0RunWriteIdle_end:
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ret
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@@ -411,9 +411,9 @@ comOnUart0RunWriteBufferEmpty:
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std Y+UART_HW_IFACE_OFFS_WRITEBUFNUM, r17
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rcall NET_Buffer_ReleaseByNum ; (R16, X)
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comOnUart0RunWriteBufferEmpty_setIdle:
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rcall UART_HW_Uart0_StopTx ; disable transceiver and interrupts (R16)
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rcall comOnUart0StopTx ; disable transceiver and interrupts (R16)
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rcall UART_HW_Uart0_SetAttnInput ; set ATTN as input
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rcall comOnUart0SetAttnInput ; set ATTN as input
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ldi r16, UART_HW_WRITEMODE_IDLE
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std Y+UART_HW_IFACE_OFFS_WRITEMODE, r16
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@@ -466,7 +466,7 @@ comOnUart0RunReading:
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ldd r16, Y+NET_IFACE_OFFS_READTIMER
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cpi r16, COMONUART0_READ_TIMEOUT
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brcs comOnUart0RunReading_end
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rcall UART_HW_Uart0_StopRx ; (R16)
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rcall comOnUart0StopRx ; (R16)
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ldd r16, Y+UART_HW_IFACE_OFFS_READBUFNUM
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ldi r17, 0xff
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std Y+UART_HW_IFACE_OFFS_READBUFNUM, r17
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@@ -517,14 +517,150 @@ comOnUart0RunMsgReceived:
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; DEBUG begin
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ldi r16, NET_IFACE_OFFS_HANDLED_LOW
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rcall NET_Interface_IncCounter16 ; (R24, R25)
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; DEBUG end
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; ---------------------------------------------------------------------------
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; @routine comOnUart0Init @global
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;
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; @param Y pointer to interface data in SRAM (see @ref UART_HW_IFACE_OFFS_STATE)
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; @clobbers R16, R17, X
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comOnUart0Init:
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.ifdef COM_ATTN_PUE
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lds r16, COM_ATTN_PUE
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cbr r16, COM_ATTN_PIN ; disable pullup on ATTN
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sts COM_ATTN_PUE, r16
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.endif
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rcall comOnUart0SetAttnInput
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M_UART_HW_Uart_Init 0
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine comOnUart0StartRx @global
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;
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; @clobbers R16
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comOnUart0StartRx:
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M_UART_HW_Uart_StartRx 0
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine comOnUart0StopRx @global
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;
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; @clobbers R16
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comOnUart0StopRx:
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M_UART_HW_Uart_StopRx 0
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine comOnUart0StartTx @global
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;
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; @param Y pointer to interface data in SRAM (see @ref UART_HW_IFACE_OFFS_STATE)
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; @clobbers R16
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comOnUart0StartTx:
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M_UART_HW_Uart_StartTx 0
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine comOnUart0StopTx @global
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;
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; @param Y pointer to interface data in SRAM (see @ref UART_HW_IFACE_OFFS_STATE)
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; @clobbers R16
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comOnUart0StopTx:
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M_UART_HW_Uart_StopTx 0
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine comOnUart0RxCharIsr @global
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;
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; @param Y pointer to interface data in SRAM (see @ref UART_HW_IFACE_OFFS_MODE)
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; @clobbers R16 (R17, R18, R24, R25, X)
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comOnUart0RxCharIsr:
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M_UART_HW_Uart_RxCharHalfDuplexIsr 0
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine comOnUart0TxUdreIsr @global
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;
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; Handler for UDRE1 interrupt called when TX data register is empty.
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;
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; @param Y pointer to interface data in SRAM (see @ref UART_HW_IFACE_OFFS_MODE)
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; @clobbers R16, R17, X
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comOnUart0TxUdreIsr:
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M_UART_HW_Uart_TxUdreIsr 0
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine comOnUart0TxCharIsr @global
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;
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; Handler for TXC1 interrupt called when a last byte has been completely sent and
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; the data register is empty.
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;
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; @param Y pointer to interface data in SRAM (see @ref UART_HW_IFACE_OFFS_MODE)
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; @clobbers R16
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comOnUart0TxCharIsr:
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M_UART_HW_Uart_TxCharIsr 0
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine comOnUart0SetAttnInput @global
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;
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; Set ATTN line as input (making it effectively HIGH due to pull-up resistor on
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; the line)
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;
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; @clobbers none
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comOnUart0SetAttnInput:
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cbi COM_ATTN_DDR, COM_ATTN_PIN ; set ATTN as input
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.ifdef COM_ATTN_PUE
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; cbi COM_ATTN_PUE, COM_ATTN_PIN ; disable pullup on ATTN
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.else
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cbi COM_ATTN_OUTPUT, COM_ATTN_PIN ; disable pullup on ATTN
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.endif
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine comOnUart0SetAttnLow @global
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;
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; Set ATTN line low.
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;
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; @clobbers none
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comOnUart0SetAttnLow:
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sbi COM_ATTN_DDR, COM_ATTN_PIN ; set ATTN as output
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cbi COM_ATTN_OUTPUT, COM_ATTN_PIN ; set ATTN low
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ret
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; @end
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; DEBUG begin
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ldi r16, NET_IFACE_OFFS_ERR_MISSED_LOW
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rcall NET_Interface_IncCounter16 ; (R24, R25)
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; DEBUG end
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