/*!
* \file
* <!--
+ * Copyright 2003, 2004 Develer S.r.l. (http://www.develer.com/)
* Copyright 2000 Bernardo Innocenti <bernie@codewiz.org>
- * Copyright 2003,2004 Develer S.r.l. (http://www.develer.com/)
* This file is part of DevLib - See devlib/README for information.
* -->
*
/*
* $Log$
+ * Revision 1.10 2004/08/10 06:30:41 bernie
+ * Major redesign of serial bus policy handling.
+ *
* Revision 1.9 2004/08/02 20:20:29 aleph
* Merge from project_ks
*
#include "kdebug.h"
#include "config.h"
#include "hw.h"
+#include <drv/timer.h>
#include <mware/fifobuf.h>
#include <avr/signal.h>
-/* Hardware handshake (RTS/CTS). */
+/*!
+ * \name Hardware handshake (RTS/CTS).
+ * \{
+ */
#ifndef RTS_ON
#define RTS_ON do {} while (0)
#endif
#ifndef IS_CTS_ON
#define IS_CTS_ON true
#endif
+#ifndef EIMSKB_CTS
+#define EIMSKB_CTS 0 /*!< Dummy value, must be overridden */
+#endif
+/*\}*/
+
+
+/*!
+ * \def CONFIG_SER_STROBE
+ *
+ * This is a debug facility that can be used to
+ * monitor SER interrupt activity on an external pin.
+ *
+ * To use strobes, redefine the macros SER_STROBE_ON,
+ * SER_STROBE_OFF and SER_STROBE_INIT and set
+ * CONFIG_SER_STROBE to 1.
+ */
+#ifndef CONFIG_SER_STROBE
+ #define SER_STROBE_ON do {/*nop*/} while(0)
+ #define SER_STROBE_OFF do {/*nop*/} while(0)
+ #define SER_STROBE_INIT do {/*nop*/} while(0)
+#endif
+
+
+/*!
+ * \name Overridable serial hooks
+ *
+ * These can be redefined in hw.h to implement
+ * special bus policies such as half-duplex, 485, etc.
+ *
+ *
+ * \code
+ * TXBEGIN TXCHAR TXEND TXOFF
+ * | __________|__________ | |
+ * | | | | | | | | |
+ * v v v v v v v v v
+ * ______ __ __ __ __ __ __ ________________
+ * \/ \/ \/ \/ \/ \/ \/
+ * ______/\__/\__/\__/\__/\__/\__/
+ *
+ * \endcode
+ *
+ * \{
+ */
+#ifndef SER_UART0_BUS_TXINIT
+ /*!
+ * Default TXINIT macro - invoked in uart0_init()
+ *
+ * - Enable both the receiver and the transmitter
+ * - Enable only the RX complete interrupt
+ */
+ #define SER_UART0_BUS_TXINIT do { \
+ UCSR0B = BV(RXCIE) | BV(RXEN) | BV(TXEN); \
+ } while (0)
+#endif
-/* External 485 transceiver on UART0 (to be overridden in "hw.h"). */
-#if !defined(SER_UART0_485_INIT)
- #if defined(SER_UART0_485_RX) || defined(SER_UART0_485_TX)
- #error SER_UART0_485_INIT, SER_UART0_485_RX and SER_UART0_485_TX must be defined together
- #endif
- #define SER_UART0_485_INIT do {} while (0)
- #define SER_UART0_485_TX do {} while (0)
- /* SER_UART0_485_RX must not be defined! */
-#elif !defined(SER_UART0_485_RX) || !defined(SER_UART0_485_TX)
- #error SER_UART0_485_INIT, SER_UART0_485_RX and SER_UART0_485_TX must be defined together
+#ifndef SER_UART0_BUS_TXBEGIN
+ /*!
+ * Invoked before starting a transmission
+ *
+ * - Enable both the receiver and the transmitter
+ * - Enable both the RX complete and UDR empty interrupts
+ */
+ #define SER_UART0_BUS_TXBEGIN do { \
+ UCSR0B = BV(RXCIE) | BV(UDRIE) | BV(RXEN) | BV(TXEN); \
+ } while (0)
#endif
-/* External 485 transceiver on UART1 (to be overridden in "hw.h"). */
-#ifndef SER_UART1_485_INIT
- #if defined(SER_UART1_485_RX) || defined(SER_UART1_485_TX)
- #error SER_UART1_485_INIT, SER_UART1_485_RX and SER_UART1_485_TX must be defined together
- #endif
- #define SER_UART1_485_INIT do {} while (0)
- #define SER_UART1_485_TX do {} while (0)
- /* SER_UART1_485_RX must not be defined! */
-#elif !defined(SER_UART1_485_RX) || !defined(SER_UART1_485_TX)
- #error SER_UART1_485_INIT, SER_UART1_485_RX and SER_UART1_485_TX must be defined together
+#ifndef SER_UART0_BUS_TXCHAR
+ /*!
+ * Invoked to send one character.
+ */
+ #define SER_UART0_BUS_TXCHAR(c) do { \
+ UDR0 = (c); \
+ } while (0)
#endif
+#ifndef SER_UART0_BUS_TXEND
+ /*!
+ * Invoked as soon as the txfifo becomes empty
+ *
+ * - Keep both the receiver and the transmitter enabled
+ * - Keep the RX complete interrupt enabled
+ * - Disable the UDR empty interrupt
+ */
+ #define SER_UART0_BUS_TXEND do { \
+ UCSR0B = BV(RXCIE) | BV(RXEN) | BV(TXEN); \
+ } while (0)
+#endif
+
+#ifndef SER_UART0_BUS_TXOFF
+ /*!
+ * \def SER_UART0_BUS_TXOFF
+ *
+ * Invoked after the last character has been transmitted
+ *
+ * The default is no action.
+ */
+#endif
+
+#ifndef SER_UART1_BUS_TXINIT
+ /*! \sa SER_UART0_BUS_TXINIT */
+ #define SER_UART1_BUS_TXINIT do { \
+ UCSR1B = BV(RXCIE) | BV(RXEN) | BV(TXEN); \
+ } while (0)
+#endif
+#ifndef SER_UART1_BUS_TXBEGIN
+ /*! \sa SER_UART0_BUS_TXBEGIN */
+ #define SER_UART1_BUS_TXBEGIN do { \
+ UCSR1B = BV(RXCIE) | BV(UDRIE) | BV(RXEN) | BV(TXEN); \
+ } while (0)
+#endif
+#ifndef SER_UART1_BUS_TXCHAR
+ /*! \sa SER_UART0_BUS_TXCHAR */
+ #define SER_UART1_BUS_TXCHAR(c) do { \
+ UDR1 = (c); \
+ } while (0)
+#endif
+#ifndef SER_UART1_BUS_TXEND
+ /*! \sa SER_UART0_BUS_TXEND */
+ #define SER_UART1_BUS_TXEND do { \
+ UCSR1B = BV(RXCIE) | BV(RXEN) | BV(TXEN); \
+ } while (0)
+#endif
+#ifndef SER_UART1_BUS_TXOFF
+ /*!
+ * \def SER_UART1_BUS_TXOFF
+ *
+ * \see SER_UART0_BUS_TXOFF
+ */
+#endif
+/*\}*/
+
/* SPI port and pin configuration */
#define SPI_PORT PORTB
#define SPI_MOSI_BIT PORTB2
#define SPI_MISO_BIT PORTB3
-
+/* USART registers definitions */
#if defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__)
#define AVR_HAS_UART1 1
#elif defined(__AVR_ATmega8__)
#endif
-/* Transmission fill byte */
-#define SER_FILL_BYTE 0xAA
-
-
/* From the high-level serial driver */
extern struct Serial ser_handles[SER_CNT];
+/*!
+ * Internal hardware state structure
+ *
+ * \a sending var is true if we are transmitting.
+ * SPI note: this flag is necessary because the SPI sends and receives bytes
+ * at the same time and the SPI IRQ is unique for send/receive.
+ * The only way to start transmission is to write data in SPDR (this
+ * is done by spi_starttx()). We do this *only* if a transfer is
+ * not already started.
+ *
+ * For the USARTs the \a sending flag is useful for taking specific
+ * actions before sending a burst of data, at the start of a trasmission
+ * but not before every char sent.
+ */
+struct AvrSerial
+{
+ struct SerialHardware hw;
+ volatile bool sending;
+};
+
/*
* These are to trick GCC into *not* using
* absolute addressing mode when accessing
struct Serial *ser_spi = &ser_handles[SER_SPI];
-static void uart0_enabletxirq(UNUSED(struct SerialHardware *, ctx))
-{
-#if CONFIG_SER_TXFILL && (CONFIG_KBUS_PORT == 0)
- UCSR0B = BV(RXCIE) | BV(UDRIE) | BV(RXEN) | BV(TXEN) | BV(UCSZ2);
-#elif defined(SER_UART0_485_TX)
- /* Disable receiver, enable transmitter, switch 485 transceiver. */
- UCSR0B = BV(UDRIE) | BV(TXEN);
- SER_UART0_485_TX;
-#else
- UCSR0B = BV(RXCIE) | BV(UDRIE) | BV(RXEN) | BV(TXEN);
-#endif
-}
+/*
+ * Callbacks
+ */
static void uart0_init(UNUSED(struct SerialHardware *, _hw), UNUSED(struct Serial *, ser))
{
-#if defined(ARCH_BOARD_KS) && (ARCH & ARCH_BOARD_KS)
- /* Set TX port as input with pull-up enabled to avoid
- noise on the remote RX when TX is disabled. */
- cpuflags_t flags;
- DISABLE_IRQSAVE(flags);
- DDRE &= ~BV(PORTE1);
- PORTE |= BV(PORTE1);
- ENABLE_IRQRESTORE(flags);
-#endif /* ARCH_BOARD_KS */
-
-#if CONFIG_SER_TXFILL && (CONFIG_KBUS_PORT == 0)
- /*!
- * Set multiprocessor mode and 9 bit data frame.
- * The receiver keep MPCM bit always on. When useful data
- * is trasmitted the ninth bit is set and the receiver receive
- * the frame.
- * When useless fill bytes are sent the ninth bit is cleared
- * and the receiver will ignore them.
- */
- UCSR0A = BV(MPCM);
- UCSR0B = BV(RXCIE) | BV(RXEN) | BV(UCSZ2);
-#else
- UCSR0B = BV(RXCIE) | BV(RXEN);
-#endif
-
- SER_UART0_485_INIT;
+ SER_UART0_BUS_TXINIT;
RTS_ON;
}
UCSR0B = 0;
}
+static void uart0_enabletxirq(struct SerialHardware *_hw)
+{
+ struct AvrSerial *hw = (struct AvrSerial *)_hw;
+
+ /*
+ * WARNING: racy code here! The tx interrupt
+ * sets hw->sending to false when it runs with
+ * an empty fifo. The order of the statements
+ * in the if-block matters.
+ */
+ if (!hw->sending)
+ {
+ hw->sending = true;
+ SER_UART0_BUS_TXBEGIN;
+ }
+}
+
static void uart0_setbaudrate(UNUSED(struct SerialHardware *, _hw), unsigned long rate)
{
/* Compute baud-rate period */
#if AVR_HAS_UART1
-static void uart1_enabletxirq(UNUSED(struct SerialHardware *, _hw))
-{
-#if CONFIG_SER_TXFILL && (CONFIG_KBUS_PORT == 1)
- UCSR1B = BV(RXCIE) | BV(UDRIE) | BV(RXEN) | BV(TXEN) | BV(UCSZ2);
-#elif defined(SER_UART1_485_TX)
- /* Disable receiver, enable transmitter, switch 485 transceiver. */
- UCSR1B = BV(UDRIE) | BV(TXEN);
- SER_UART1_485_TX;
-#else
- UCSR1B = BV(RXCIE) | BV(UDRIE) | BV(RXEN) | BV(TXEN);
-#endif
-}
-
static void uart1_init(UNUSED(struct SerialHardware *, _hw), UNUSED(struct Serial *, ser))
{
- /* Set TX port as input with pull-up enabled to avoid
- * noise on the remote RX when TX is disabled */
- cpuflags_t flags;
- DISABLE_IRQSAVE(flags);
- DDRD &= ~BV(PORTD3);
- PORTD |= BV(PORTD3);
- ENABLE_IRQRESTORE(flags);
-
-#if CONFIG_SER_TXFILL && (CONFIG_KBUS_PORT == 1)
- /*! See comment in uart0_init() */
- UCSR1A = BV(MPCM);
- UCSR1B = BV(RXCIE) | BV(RXEN) | BV(UCSZ2);
-#else
- UCSR1B = BV(RXCIE) | BV(RXEN);
-#endif
- SER_UART1_485_INIT;
+ SER_UART1_BUS_TXINIT;
RTS_ON;
+ SER_STROBE_INIT;
}
static void uart1_cleanup(UNUSED(struct SerialHardware *, _hw))
UCSR1B = 0;
}
+static void uart1_enabletxirq(struct SerialHardware *_hw)
+{
+ struct AvrSerial *hw = (struct AvrSerial *)_hw;
+
+ /*
+ * WARNING: racy code here! The tx interrupt
+ * sets hw->sending to false when it runs with
+ * an empty fifo. The order of the statements
+ * in the if-block matters.
+ */
+ if (!hw->sending)
+ {
+ hw->sending = true;
+ SER_UART1_BUS_TXBEGIN;
+ }
+}
+
static void uart1_setbaudrate(UNUSED(struct SerialHardware *, _hw), unsigned long rate)
{
/* Compute baud-rate period */
#endif // AVR_HAS_UART1
-
static void spi_init(UNUSED(struct SerialHardware *, _hw), UNUSED(struct Serial *, ser))
{
/*
SPI_DDR &= ~(BV(SPI_MISO_BIT) | BV(SPI_MOSI_BIT) | BV(SPI_SCK_BIT));
}
+static void spi_starttx(struct SerialHardware *_hw)
+{
+ struct AvrSerial *hw = (struct AvrSerial *)_hw;
+
+ cpuflags_t flags;
+ DISABLE_IRQSAVE(flags);
+
+ /* Send data only if the SPI is not already transmitting */
+ if (!hw->sending && !fifo_isempty(&ser_spi->txfifo))
+ {
+ hw->sending = true;
+ SPDR = fifo_pop(&ser_spi->txfifo);
+ }
+
+ ENABLE_IRQRESTORE(flags);
+}
+
static void spi_setbaudrate(UNUSED(struct SerialHardware *, _hw), UNUSED(unsigned long, rate))
{
// nop
}
+
+/*
+ * High-level interface data structures
+ */
+static const struct SerialHardwareVT UART0_VT =
+{
+ .init = uart0_init,
+ .cleanup = uart0_cleanup,
+ .setbaudrate = uart0_setbaudrate,
+ .setparity = uart0_setparity,
+ .enabletxirq = uart0_enabletxirq,
+};
+
+#if AVR_HAS_UART1
+static const struct SerialHardwareVT UART1_VT =
+{
+ .init = uart1_init,
+ .cleanup = uart1_cleanup,
+ .setbaudrate = uart1_setbaudrate,
+ .setparity = uart1_setparity,
+ .enabletxirq = uart1_enabletxirq,
+};
+#endif // AVR_HAS_UART1
+
+static const struct SerialHardwareVT SPI_VT =
+{
+ .init = spi_init,
+ .cleanup = spi_cleanup,
+ .setbaudrate = spi_setbaudrate,
+ .setparity = spi_setparity,
+ .enabletxirq = spi_starttx,
+};
+
+static struct AvrSerial UARTDescs[SER_CNT] =
+{
+ {
+ .hw = { .table = &UART0_VT },
+ .sending = false,
+ },
+#if AVR_HAS_UART1
+ {
+ .hw = { .table = &UART1_VT },
+ .sending = false,
+ },
+#endif
+ {
+ .hw = { .table = &SPI_VT },
+ .sending = false,
+ }
+};
+
+struct SerialHardware* ser_hw_getdesc(int unit)
+{
+ ASSERT(unit < SER_CNT);
+ return &UARTDescs[unit].hw;
+}
+
+
+
+/*
+ * Interrupt handlers
+ */
+
#if CONFIG_SER_HWHANDSHAKE
//! This interrupt is triggered when the CTS line goes high
*/
SIGNAL(SIG_UART0_DATA)
{
+ SER_STROBE_ON;
+
struct FIFOBuffer * const txfifo = &ser_uart0->txfifo;
if (fifo_isempty(txfifo))
{
-#if CONFIG_SER_TXFILL && (CONFIG_KBUS_PORT == 0)
- /*
- * To avoid audio interference: always transmit useless char.
- * Send the byte with the ninth bit cleared, the receiver in MCPM mode
- * will ignore it.
- */
- UCSR0B &= ~BV(TXB8);
- UDR0 = SER_FILL_BYTE;
-#elif defined(SER_UART0_485_RX)
- /*
- * - Disable UDR empty interrupt
- * - Disable the transmitter (the in-progress transfer will complete)
- * - Enable the transmit complete interrupt for the 485 tranceiver.
- */
- UCSR0B = BV(TXCIE);
-#else
- /* Disable UDR empty interrupt and transmitter */
- UCSR0B = BV(RXCIE) | BV(RXEN);
+ SER_UART0_BUS_TXEND;
+#ifndef SER_UART0_BUS_TXOFF
+ UARTDescs[SER_UART0].sending = false;
#endif
}
-#if CONFIG_SER_HWHANDSHAKE
+#if CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128 || CPU_AVR_ATMEGA103
else if (!IS_CTS_ON)
{
// Disable rx interrupt and tx, enable CTS interrupt
+ // UNTESTED
UCSR0B = BV(RXCIE) | BV(RXEN);
sbi(EIFR, EIMSKB_CTS);
sbi(EIMSK, EIMSKB_CTS);
}
-#endif // CONFIG_SER_HWHANDSHAKE
+#endif
else
{
-#if CONFIG_SER_TXFILL && (CONFIG_KBUS_PORT == 0)
- /* Send with ninth bit set. Receiver in MCPM mode will receive it */
- UCSR0B |= BV(TXB8);
-#endif
- UDR0 = fifo_pop(txfifo);
+ char c = fifo_pop(txfifo);
+ SER_UART0_BUS_TXCHAR(c);
}
+
+ SER_STROBE_OFF;
}
-#ifdef SER_UART0_485_RX
+#ifdef SER_UART0_BUS_TXOFF
/*!
* Serial port 0 TX complete interrupt handler.
*
* We need to wait until the last character has been
* transmitted before switching the 485 transceiver to
* receive mode.
+ *
+ * The txfifo might have been refilled by putchar() while
+ * we were waiting for the transmission complete interrupt.
+ * In this case, we must restart the UDR empty interrupt,
+ * otherwise we'd stop the serial port with some data
+ * still pending in the buffer.
*/
SIGNAL(SIG_UART0_TRANS)
{
- /* Turn the 485 tranceiver into receive mode. */
- SER_UART0_485_RX;
+ SER_STROBE_ON;
- /* Enable UART receiver and receive interrupt. */
- UCSR0B = BV(RXCIE) | BV(RXEN);
+ struct FIFOBuffer * const txfifo = &ser_uart0->txfifo;
+ if (fifo_isempty(txfifo))
+ {
+ SER_UART0_BUS_TXOFF;
+ UARTDescs[SER_UART0].sending = false;
+ }
+ else
+ UCSR0B = BV(RXCIE) | BV(UDRIE) | BV(RXEN) | BV(TXEN);
+
+ SER_STROBE_OFF;
}
-#endif /* SER_UART0_485_RX */
+#endif /* SER_UART0_BUS_TXOFF */
#if AVR_HAS_UART1
*/
SIGNAL(SIG_UART1_DATA)
{
+ SER_STROBE_ON;
+
struct FIFOBuffer * const txfifo = &ser_uart1->txfifo;
if (fifo_isempty(txfifo))
{
-#if CONFIG_SER_TXFILL && (CONFIG_KBUS_PORT == 1)
- /*
- * To avoid audio interference: always transmit useless char.
- * Send the byte with the ninth bit cleared, the receiver in MCPM mode
- * will ignore it.
- */
- UCSR1B &= ~BV(TXB8);
- UDR1 = SER_FILL_BYTE;
-#elif defined(SER_UART1_485_RX)
- /*
- * - Disable UDR empty interrupt
- * - Disable the transmitter (the in-progress transfer will complete)
- * - Enable the transmit complete interrupt for the 485 tranceiver.
- */
- UCSR1B = BV(TXCIE);
-#else
- /* Disable UDR empty interrupt and transmitter */
- UCSR1B = BV(RXCIE) | BV(RXEN);
+ SER_UART1_BUS_TXEND;
+#ifndef SER_UART1_BUS_TXOFF
+ UARTDescs[SER_UART1].sending = false;
#endif
}
-#if CONFIG_SER_HWHANDSHAKE
- else if (IS_CTS_OFF)
+#if CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128 || CPU_AVR_ATMEGA103
+ else if (!IS_CTS_ON)
{
// Disable rx interrupt and tx, enable CTS interrupt
+ // UNTESTED
UCSR1B = BV(RXCIE) | BV(RXEN);
sbi(EIFR, EIMSKB_CTS);
sbi(EIMSK, EIMSKB_CTS);
}
-#endif // CONFIG_SER_HWHANDSHAKE
+#endif
else
{
-#if CONFIG_SER_TXFILL && (CONFIG_KBUS_PORT == 1)
- /* Send with ninth bit set. Receiver in MCPM mode will receive it */
- UCSR1B |= BV(TXB8);
-#endif
- UDR1 = fifo_pop(txfifo);
+ char c = fifo_pop(txfifo);
+ SER_UART1_BUS_TXCHAR(c);
}
+
+ SER_STROBE_OFF;
}
-#ifdef SER_UART1_485_RX
+#ifdef SER_UART1_BUS_TXOFF
/*!
* Serial port 1 TX complete interrupt handler.
*
*/
SIGNAL(SIG_UART1_TRANS)
{
- /* Turn the 485 tranceiver into receive mode. */
- SER_UART1_485_RX;
+ SER_STROBE_ON;
- /* Enable UART receiver and receive interrupt. */
- UCSR1B = BV(RXCIE) | BV(RXEN);
+ struct FIFOBuffer * const txfifo = &ser_uart1->txfifo;
+ if (fifo_isempty(txfifo))
+ {
+ SER_UART1_BUS_TXOFF;
+ UARTDescs[SER_UART1].sending = false;
+ }
+ else
+ UCSR1B = BV(RXCIE) | BV(UDRIE) | BV(RXEN) | BV(TXEN);
+
+ SER_STROBE_OFF;
}
-#endif /* SER_UART1_485_RX */
+#endif /* SER_UART1_BUS_TXOFF */
#endif // AVR_HAS_UART1
*/
SIGNAL(SIG_UART0_RECV)
{
+ SER_STROBE_ON;
+
/* Disable Recv complete IRQ */
UCSR0B &= ~BV(RXCIE);
ENABLE_INTS;
/* Reenable receive complete int */
UCSR0B |= BV(RXCIE);
+
+ SER_STROBE_OFF;
}
*/
SIGNAL(SIG_UART1_RECV)
{
+ SER_STROBE_ON;
+
/* Disable Recv complete IRQ */
UCSR1B &= ~BV(RXCIE);
ENABLE_INTS;
}
/* Reenable receive complete int */
UCSR1B |= BV(RXCIE);
+
+ SER_STROBE_OFF;
}
#endif // AVR_HAS_UART1
-/*
- * SPI Flag: true if we are transmitting/receiving with the SPI.
- *
- * This kludge is necessary because the SPI sends and receives bytes
- * at the same time and the SPI IRQ is unique for send/receive.
- * The only way to start transmission is to write data in SPDR (this
- * is done by spi_starttx()). We do this *only* if a transfer is
- * not already started.
- */
-static volatile bool spi_sending = false;
-
-static void spi_starttx(UNUSED(struct SerialHardware *, ctx))
-{
- cpuflags_t flags;
-
- DISABLE_IRQSAVE(flags);
-
- /* Send data only if the SPI is not already transmitting */
- if (!spi_sending && !fifo_isempty(&ser_spi->txfifo))
- {
- SPDR = fifo_pop(&ser_spi->txfifo);
- spi_sending = true;
- }
-
- ENABLE_IRQRESTORE(flags);
-}
-
/*!
* SPI interrupt handler
*/
if (!fifo_isempty(&ser_spi->txfifo))
SPDR = fifo_pop(&ser_spi->txfifo);
else
- spi_sending = false;
-}
-
-
-static const struct SerialHardwareVT UART0_VT =
-{
- .init = uart0_init,
- .cleanup = uart0_cleanup,
- .setbaudrate = uart0_setbaudrate,
- .setparity = uart0_setparity,
- .enabletxirq = uart0_enabletxirq,
-};
-
-#if AVR_HAS_UART1
-static const struct SerialHardwareVT UART1_VT =
-{
- .init = uart1_init,
- .cleanup = uart1_cleanup,
- .setbaudrate = uart1_setbaudrate,
- .setparity = uart1_setparity,
- .enabletxirq = uart1_enabletxirq,
-};
-#endif // AVR_HAS_UART1
-
-static const struct SerialHardwareVT SPI_VT =
-{
- .init = spi_init,
- .cleanup = spi_cleanup,
- .setbaudrate = spi_setbaudrate,
- .setparity = spi_setparity,
- .enabletxirq = spi_starttx,
-};
-
-static struct SerialHardware UARTDescs[SER_CNT] =
-{
- { .table = &UART0_VT },
-#if AVR_HAS_UART1
- { .table = &UART1_VT },
-#endif
- { .table = &SPI_VT },
-};
-
-struct SerialHardware* ser_hw_getdesc(int unit)
-{
- ASSERT(unit < SER_CNT);
- return &UARTDescs[unit];
+ UARTDescs[SER_SPI].sending = false;
}
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