- #if CONFIG_KDEBUG_PORT == 666
- #error BITBANG debug console missing for this platform
- #endif
-#elif CPU_AVR
- #include <avr/io.h>
-
- #if CONFIG_KDEBUG_PORT == 0
-
- /*
- * Support for special bus policies or external transceivers
- * on UART0 (to be overridden in "hw_ser.h").
- *
- * HACK: if we don't set TXEN, kdbg disables the transmitter
- * after each output statement until the serial driver
- * is initialized. These glitches confuse the debug
- * terminal that ends up printing some trash.
- */
- #ifndef KDBG_UART0_BUS_INIT
- #define KDBG_UART0_BUS_INIT do { \
- UCSR0B = BV(TXEN0); \
- } while (0)
- #endif
- #ifndef KDBG_UART0_BUS_RX
- #define KDBG_UART0_BUS_RX do {} while (0)
- #endif
- #ifndef KDBG_UART0_BUS_TX
- #define KDBG_UART0_BUS_TX do {} while (0)
- #endif
-
- #if CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128 || CPU_AVR_ATMEGA168
- #define UCR UCSR0B
- #define UDR UDR0
- #define USR UCSR0A
- #elif CPU_AVR_ATMEGA8
- #define UCR UCSRB
- #define USR UCSRA
- #else
- #error Unknown CPU
- #endif
-
- #define KDBG_WAIT_READY() do { loop_until_bit_is_set(USR, UDRE0); } while(0)
- #define KDBG_WAIT_TXDONE() do { loop_until_bit_is_set(USR, TXC0); } while(0)
-
- /*
- * We must clear the TXC flag before sending a new character to allow
- * KDBG_WAIT_TXDONE() to work properly.
- *
- * BUG: if KDBG_WRITE_CHAR() is called after the TXC flag is set by hardware,
- * a new TXC could be generated after we've cleared it and before the new
- * character is written to UDR. On a 485 bus, the transceiver will be put
- * in RX mode while still transmitting the last char.
- */
- #define KDBG_WRITE_CHAR(c) do { USR |= BV(TXC0); UDR = (c); } while(0)
-
- #define KDBG_MASK_IRQ(old) do { \
- (old) = UCR; \
- UCR |= BV(TXEN0); \
- UCR &= ~(BV(TXCIE0) | BV(UDRIE0)); \
- KDBG_UART0_BUS_TX; \
- } while(0)
-
- #define KDBG_RESTORE_IRQ(old) do { \
- KDBG_WAIT_TXDONE(); \
- KDBG_UART0_BUS_RX; \
- UCR = (old); \
- } while(0)
-
- typedef uint8_t kdbg_irqsave_t;
-
- #elif CONFIG_KDEBUG_PORT == 1
-
- /*
- * Support for special bus policies or external transceivers
- * on UART1 (to be overridden in "hw_ser.h").
- *
- * HACK: if we don't set TXEN, kdbg disables the transmitter
- * after each output statement until the serial driver
- * is initialized. These glitches confuse the debug
- * terminal that ends up printing some trash.
- */
- #ifndef KDBG_UART1_BUS_INIT
- #define KDBG_UART1_BUS_INIT do { \
- UCSR1B = BV(TXEN1); \
- } while (0)
- #endif
- #ifndef KDBG_UART1_BUS_RX
- #define KDBG_UART1_BUS_RX do {} while (0)
- #endif
- #ifndef KDBG_UART1_BUS_TX
- #define KDBG_UART1_BUS_TX do {} while (0)
- #endif
-
- #define KDBG_WAIT_READY() do { loop_until_bit_is_set(UCSR1A, UDRE1); } while(0)
- #define KDBG_WAIT_TXDONE() do { loop_until_bit_is_set(UCSR1A, TXC1); } while(0)
- #define KDBG_WRITE_CHAR(c) do { UCSR1A |= BV(TXC1); UDR1 = (c); } while(0)
-
- #define KDBG_MASK_IRQ(old) do { \
- (old) = UCSR1B; \
- UCSR1B |= BV(TXEN1); \
- UCSR1B &= ~(BV(TXCIE1) | BV(UDRIE1)); \
- KDBG_UART1_BUS_TX; \
- } while(0)
-
- #define KDBG_RESTORE_IRQ(old) do { \
- KDBG_WAIT_TXDONE(); \
- KDBG_UART1_BUS_RX; \
- UCSR1B = (old); \
- } while(0)
-
- typedef uint8_t kdbg_irqsave_t;
-
- /*
- * Special debug port for BitBanged Serial see below for details...
- */
- #elif CONFIG_KDEBUG_PORT == 666
- #include "hw_ser.h"
- #define KDBG_WAIT_READY() do { /*nop*/ } while(0)
- #define KDBG_WRITE_CHAR(c) _kdebug_bitbang_putchar((c))
- #define KDBG_MASK_IRQ(old) do { IRQ_SAVE_DISABLE((old)); } while(0)
- #define KDBG_RESTORE_IRQ(old) do { IRQ_RESTORE((old)); } while(0)
- typedef cpuflags_t kdbg_irqsave_t;
-
- #define KDBG_DELAY (((CLOCK_FREQ + CONFIG_KDEBUG_BAUDRATE / 2) / CONFIG_KDEBUG_BAUDRATE) + 7) / 14
-
- static void _kdebug_bitbang_delay(void)
- {
- unsigned long i;
-
- for (i = 0; i < KDBG_DELAY; i++)
- {
- NOP;
- NOP;
- NOP;
- NOP;
- NOP;
- }
- }
- #else
- #error CONFIG_KDEBUG_PORT should be either 0, 1 or 666
- #endif
-#elif defined(__MWERKS__) && CPU_DSP56K
- /* Debugging go through the JTAG interface. The MSL library already
- implements the console I/O correctly. */
- #include <stdio.h>
- #define KDBG_WAIT_READY() do { } while (0)
- #define KDBG_WRITE_CHAR(c) __put_char(c, stdout)
- #define KDBG_MASK_IRQ(old) do { (void)(old); } while (0)
- #define KDBG_RESTORE_IRQ(old) do { (void)(old); } while (0)
- typedef uint8_t kdbg_irqsave_t; /* unused */