X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=drv%2Fkdebug.c;h=dab377841d630edef6c4fcbc8ebc4b35aa22b916;hb=be5afe05ba0c8a2c885ee9b5a7251ac95d11ac20;hp=bd21cbbbf7700bf57b5226863cd33815f493c7c7;hpb=bcf38f772b397e7a8ba781a69aacb9380e54b32a;p=bertos.git

diff --git a/drv/kdebug.c b/drv/kdebug.c
old mode 100755
new mode 100644
index bd21cbbb..dab37784
--- a/drv/kdebug.c
+++ b/drv/kdebug.c
@@ -1,9 +1,34 @@
 /**
  * \file
  * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
  * Copyright 2003, 2004, 2005 Develer S.r.l. (http://www.develer.com/)
  * Copyright 2000, 2001, 2002 Bernardo Innocenti <bernie@codewiz.org>
- * This file is part of DevLib - See README.devlib for information.
+ *
  * -->
  *
  * \brief General pourpose debug support for embedded systems (implementation).
@@ -15,6 +40,15 @@
 
 /*#*
  *#* $Log$
+ *#* Revision 1.31  2007/06/07 14:25:30  batt
+ *#* Merge from project_ks
+ *#*
+ *#* Revision 1.30  2007/01/28 09:18:06  batt
+ *#* Merge from project_ks.
+ *#*
+ *#* Revision 1.29  2006/11/23 13:19:39  batt
+ *#* Add BitBanged serial debug console.
+ *#*
  *#* Revision 1.28  2006/07/19 12:56:25  bernie
  *#* Convert to new Doxygen style.
  *#*
@@ -47,15 +81,20 @@
  *#*/
 
 #include <cfg/debug.h>
-#include <cfg/cpu.h>
+#include <cpu/cpu.h>
 #include <cfg/macros.h> /* for BV() */
 #include <appconfig.h>
 #include <hw_cpu.h>     /* for CLOCK_FREQ */
+#include <hw_ser.h>     /* Required for bus macros overrides */
 
 #include <mware/formatwr.h> /* for _formatted_write() */
 
 #ifdef _DEBUG
 
+#if CPU_HARVARD && !defined(_PROGMEM)
+	#error This module build correctly only in program memory!
+#endif
+
 #if defined(_EMUL)
 	#include <stdio.h>
 	#define KDBG_WAIT_READY()      do { /*nop*/ } while(0)
@@ -63,6 +102,10 @@
 	#define KDBG_MASK_IRQ(old)     do { (void)(old); } while(0)
 	#define KDBG_RESTORE_IRQ(old)  do { /*nop*/ } while(0)
 	typedef char kdbg_irqsave_t; /* unused */
+
+	#if CONFIG_KDEBUG_PORT == 666
+		#error BITBANG debug console missing for this platform
+	#endif
 #elif CPU_I196
 	#include "Util196.h"
 	#define KDBG_WAIT_READY()      do {} while (!(SP_STAT & (SPSF_TX_EMPTY | SPSF_TX_INT)))
@@ -74,6 +117,10 @@
 		} while(0)
 	#define KDBG_RESTORE_IRQ(old)  do { INT_MASK1 |= (old); }
 	typedef uint16_t kdbg_irqsave_t; /* FIXME: unconfirmed */
+
+	#if CONFIG_KDEBUG_PORT == 666
+		#error BITBANG debug console missing for this platform
+	#endif
 #elif CPU_AVR
 	#include <avr/io.h>
 
@@ -81,7 +128,7 @@
 
 		/*
 		 * Support for special bus policies or external transceivers
-		 * on UART0 (to be overridden in "hw.h").
+		 * 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
@@ -90,7 +137,7 @@
 		 */
 		#ifndef KDBG_UART0_BUS_INIT
 		#define KDBG_UART0_BUS_INIT  do { \
-				UCSR0B = BV(TXEN); \
+				UCSR0B = BV(TXEN0); \
 			} while (0)
 		#endif
 		#ifndef KDBG_UART0_BUS_RX
@@ -100,7 +147,7 @@
 		#define KDBG_UART0_BUS_TX    do {} while (0)
 		#endif
 
-		#if CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128
+		#if CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128 || CPU_AVR_ATMEGA168
 			#define UCR UCSR0B
 			#define UDR UDR0
 			#define USR UCSR0A
@@ -111,8 +158,8 @@
 			#error Unknown CPU
 		#endif
 
-		#define KDBG_WAIT_READY()     do { loop_until_bit_is_set(USR, UDRE); } while(0)
-		#define KDBG_WAIT_TXDONE()    do { loop_until_bit_is_set(USR, TXC); } while(0)
+		#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
@@ -123,12 +170,12 @@
 		 * 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(TXC); UDR = (c); } while(0)
+		#define KDBG_WRITE_CHAR(c)    do { USR |= BV(TXC0); UDR = (c); } while(0)
 
 		#define KDBG_MASK_IRQ(old)    do { \
 			(old) = UCR; \
-			UCR |= BV(TXEN); \
-			UCR &= ~(BV(TXCIE) | BV(UDRIE)); \
+			UCR |= BV(TXEN0); \
+			UCR &= ~(BV(TXCIE0) | BV(UDRIE0)); \
 			KDBG_UART0_BUS_TX; \
 		} while(0)
 
@@ -144,7 +191,7 @@
 
 		/*
 		 * Support for special bus policies or external transceivers
-		 * on UART1 (to be overridden in "hw.h").
+		 * 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
@@ -153,7 +200,7 @@
 		 */
 		#ifndef KDBG_UART1_BUS_INIT
 		#define KDBG_UART1_BUS_INIT  do { \
-				UCSR1B = BV(TXEN); \
+				UCSR1B = BV(TXEN1); \
 			} while (0)
 		#endif
 		#ifndef KDBG_UART1_BUS_RX
@@ -163,14 +210,14 @@
 		#define KDBG_UART1_BUS_TX    do {} while (0)
 		#endif
 
-		#define KDBG_WAIT_READY()     do { loop_until_bit_is_set(UCSR1A, UDRE); } while(0)
-		#define KDBG_WAIT_TXDONE()    do { loop_until_bit_is_set(UCSR1A, TXC); } while(0)
-		#define KDBG_WRITE_CHAR(c)    do { UCSR1A |= BV(TXC); UDR1 = (c); } while(0)
+		#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(TXEN); \
-			UCSR1B &= ~(BV(TXCIE) | BV(UDRIE)); \
+			UCSR1B |= BV(TXEN1); \
+			UCSR1B &= ~(BV(TXCIE1) | BV(UDRIE1)); \
 			KDBG_UART1_BUS_TX; \
 		} while(0)
 
@@ -181,8 +228,35 @@
 		} 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 or 1
+		#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
@@ -193,10 +267,50 @@
 	#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 */
+	#if CONFIG_KDEBUG_PORT == 666
+		#error BITBANG debug console missing for this platform
+	#endif
 #else
 	#error Unknown architecture
 #endif
 
+#if CONFIG_KDEBUG_PORT == 666
+	/**
+	 * Putchar for BITBANG serial debug console.
+	 * Sometimes, we can't permit to use a whole serial for debugging purpose.
+	 * Since debug console is in output only it is usefull to use a single generic I/O pin for debug.
+	 * This is achieved by this simple function, that shift out the data like a UART, but
+	 * in software :)
+	 * The only requirement is that SER_BITBANG_* macros will be defined somewhere (usually hw_ser.h)
+	 * \note All interrupts are disabled during debug prints!
+	 */
+	static void _kdebug_bitbang_putchar(char c)
+	{
+		int i;
+		uint16_t data = c;
+
+		/* Add stop bit */
+		data |= 0x0100;
+
+		/* Add start bit*/
+		data <<= 1;
+
+		/* Shift out data */
+		uint16_t shift = 1;
+		for (i = 0; i < 10; i++)
+		{
+			if (data & shift)
+				SER_BITBANG_HIGH;
+			else
+				SER_BITBANG_LOW;
+			_kdebug_bitbang_delay();
+			shift <<= 1;
+		}
+	}
+#endif
+
+
+
 
 void kdbg_init(void)
 {
@@ -211,31 +325,39 @@ void kdbg_init(void)
 	BAUD_RATE = 0x80;
 
 #elif CPU_AVR
+	#if CONFIG_KDEBUG_PORT == 666
+		SER_BITBANG_INIT;
+	#else /* CONFIG_KDEBUG_PORT != 666 */
+		/* Compute the baud rate */
+		uint16_t period = (((CLOCK_FREQ / 16UL) + (CONFIG_KDEBUG_BAUDRATE / 2)) / CONFIG_KDEBUG_BAUDRATE) - 1;
+
+		#if (CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128)
+			#if CONFIG_KDEBUG_PORT == 0
+				UBRR0H = (uint8_t)(period>>8);
+				UBRR0L = (uint8_t)period;
+				KDBG_UART0_BUS_INIT;
+			#elif CONFIG_KDEBUG_PORT == 1
+				UBRR1H = (uint8_t)(period>>8);
+				UBRR1L = (uint8_t)period;
+				KDBG_UART1_BUS_INIT;
+			#else
+				#error CONFIG_KDEBUG_PORT must be either 0 or 1
+			#endif
 
-	/* Compute the baud rate */
-	uint16_t period = (((CLOCK_FREQ / 16UL) + (CONFIG_KDEBUG_BAUDRATE / 2)) / CONFIG_KDEBUG_BAUDRATE) - 1;
-
-	#if CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128
-		#if CONFIG_KDEBUG_PORT == 0
+		#elif CPU_AVR_ATMEGA168
 			UBRR0H = (uint8_t)(period>>8);
 			UBRR0L = (uint8_t)period;
 			KDBG_UART0_BUS_INIT;
-		#elif CONFIG_KDEBUG_PORT == 1
-			UBRR1H = (uint8_t)(period>>8);
-			UBRR1L = (uint8_t)period;
-			KDBG_UART1_BUS_INIT;
+		#elif CPU_AVR_ATMEGA8
+			UBRRH = (uint8_t)(period>>8);
+			UBRRL = (uint8_t)period;
+		#elif CPU_AVR_ATMEGA103
+			UBRR = (uint8_t)period;
+			KDBG_UART0_BUS_INIT;
 		#else
-			#error CONFIG_KDEBUG_PORT must be either 0 or 1
+			#error Unknown CPU
 		#endif
-	#elif CPU_AVR_ATMEGA8
-		UBRRH = (uint8_t)(period>>8);
-		UBRRL = (uint8_t)period;
-	#elif CPU_AVR_ATMEGA103
-		UBRR = (uint8_t)period;
-		KDBG_UART0_BUS_INIT;
-	#else
-		#error Unknown CPU
-	#endif
+	#endif /* CONFIG_KDEBUG_PORT == 666 */
 
 #endif /* !CPU_I196 && !CPU_AVR */