X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=drv%2Fkdebug.c;h=04f6abc720ea3ad49a17be747517b4e2e32a6fed;hb=258c7dc15d2c4815c0996fc98fdc0155d99adfea;hp=d80be75681f901a215bce5d7273deb9dec7f95f8;hpb=af9c555446161016fdd76c1cdff96ce76bb6cba2;p=bertos.git

diff --git a/drv/kdebug.c b/drv/kdebug.c
index d80be756..04f6abc7 100755
--- a/drv/kdebug.c
+++ b/drv/kdebug.c
@@ -1,4 +1,4 @@
-/*!
+/**
  * \file
  * <!--
  * Copyright 2003, 2004, 2005 Develer S.r.l. (http://www.develer.com/)
@@ -15,6 +15,24 @@
 
 /*#*
  *#* $Log$
+ *#* 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.
+ *#*
+ *#* Revision 1.27  2006/06/01 12:32:06  marco
+ *#* Updated include reference.
+ *#*
+ *#* Revision 1.26  2006/04/27 05:40:27  bernie
+ *#* Break on assertion failures.
+ *#*
+ *#* Revision 1.25  2005/06/27 21:26:24  bernie
+ *#* Misc PGM fixes.
+ *#*
+ *#* Revision 1.24  2005/04/12 01:36:37  bernie
+ *#* Add hack to enable TX line at module initialization.
+ *#*
  *#* Revision 1.23  2005/04/11 19:10:27  bernie
  *#* Include top-level headers from cfg/ subdir.
  *#*
@@ -34,8 +52,9 @@
 #include <cfg/debug.h>
 #include <cfg/cpu.h>
 #include <cfg/macros.h> /* for BV() */
-#include <cfg/config.h>
-#include <hw.h>
+#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() */
 
@@ -48,6 +67,10 @@
 	#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)))
@@ -59,6 +82,10 @@
 		} 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>
 
@@ -66,10 +93,17 @@
 
 		/*
 		 * 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
+		 * 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 {} while (0)
+		#define KDBG_UART0_BUS_INIT  do { \
+				UCSR0B = BV(TXEN); \
+			} while (0)
 		#endif
 		#ifndef KDBG_UART0_BUS_RX
 		#define KDBG_UART0_BUS_RX    do {} while (0)
@@ -78,7 +112,7 @@
 		#define KDBG_UART0_BUS_TX    do {} while (0)
 		#endif
 
-		#if CPU_AVR_ATMEGA64
+		#if CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128
 			#define UCR UCSR0B
 			#define UDR UDR0
 			#define USR UCSR0A
@@ -122,10 +156,17 @@
 
 		/*
 		 * 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
+		 * 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 {} while (0)
+		#define KDBG_UART1_BUS_INIT  do { \
+				UCSR1B = BV(TXEN); \
+			} while (0)
 		#endif
 		#ifndef KDBG_UART1_BUS_RX
 		#define KDBG_UART1_BUS_RX    do {} while (0)
@@ -152,8 +193,40 @@
 		} 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) + 12) / 24
+
+		static void _kdebug_bitbang_delay(void)
+		{
+			unsigned long i;
+
+			for (i = 0; i < KDBG_DELAY; i++)
+			{
+				NOP;
+				NOP;
+				NOP;
+				NOP;
+				NOP;
+				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
@@ -164,10 +237,49 @@
 	#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 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;
+
+		/* Start bit */
+		SER_BITBANG_LOW;
+		_kdebug_bitbang_delay();
+
+		/* Shift out data */
+		for (i = 0; i < 8; i++)
+		{
+			if (c & BV(i))
+				SER_BITBANG_HIGH;
+			else
+				SER_BITBANG_LOW;
+			_kdebug_bitbang_delay();
+		}
+
+		/* Stop bit */
+		SER_BITBANG_HIGH;
+		_kdebug_bitbang_delay();
+	}
+#endif
+
+
+
 
 void kdbg_init(void)
 {
@@ -182,31 +294,34 @@ void kdbg_init(void)
 	BAUD_RATE = 0x80;
 
 #elif CPU_AVR
-
-	/* Compute the baud rate */
-	uint16_t period = (((CLOCK_FREQ / 16UL) + (CONFIG_KDEBUG_BAUDRATE / 2)) / CONFIG_KDEBUG_BAUDRATE) - 1;
-
-	#if CPU_AVR_ATMEGA64
-		#if CONFIG_KDEBUG_PORT == 0
-			UBRR0H = (uint8_t)(period>>8);
-			UBRR0L = (uint8_t)period;
+	#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
+		#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;
-		#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
+			#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 */
 
@@ -214,7 +329,7 @@ void kdbg_init(void)
 }
 
 
-/*!
+/**
  * Output one character to the debug console
  */
 static void __kputchar(char c, UNUSED_ARG(void *, unused))
@@ -287,7 +402,7 @@ void PGM_FUNC(kputs)(const char * PGM_ATTR str)
 }
 
 
-/*!
+/**
  * Cheap function to print small integers without using printf().
  */
 int kputnum(int num)
@@ -318,15 +433,16 @@ static void klocation(const char * PGM_ATTR file, int line)
 	PGM_FUNC(kputs)(file);
 	kputchar(':');
 	kputnum(line);
-	PGM_FUNC(kputs)(PSTR(": "));
+	PGM_FUNC(kputs)(PGM_STR(": "));
 }
 
 int PGM_FUNC(__assert)(const char * PGM_ATTR cond, const char * PGM_ATTR file, int line)
 {
 	klocation(file, line);
-	PGM_FUNC(kputs)(PSTR("Assertion failed: "));
+	PGM_FUNC(kputs)(PGM_STR("Assertion failed: "));
 	PGM_FUNC(kputs)(cond);
 	kputchar('\n');
+	BREAKPOINT;
 	return 1;
 }
 
@@ -337,26 +453,27 @@ int PGM_FUNC(__assert)(const char * PGM_ATTR cond, const char * PGM_ATTR file, i
  */
 void PGM_FUNC(__trace)(const char *name)
 {
-	PGM_FUNC(kprintf)(PSTR("%s()\n"), name);
+	PGM_FUNC(kprintf)(PGM_STR("%s()\n"), name);
 }
 
 void PGM_FUNC(__tracemsg)(const char *name, const char * PGM_ATTR fmt, ...)
 {
 	va_list ap;
 
-	PGM_FUNC(kprintf)(PSTR("%s(): "), name);
+	PGM_FUNC(kprintf)(PGM_STR("%s(): "), name);
 	va_start(ap, fmt);
 	PGM_FUNC(kvprintf)(fmt, ap);
 	va_end(ap);
+	kputchar('\n');
 }
 
 int PGM_FUNC(__invalid_ptr)(void *value, const char * PGM_ATTR name, const char * PGM_ATTR file, int line)
 {
 	klocation(file, line);
-	PGM_FUNC(kputs)(PSTR("Invalid ptr: "));
+	PGM_FUNC(kputs)(PGM_STR("Invalid ptr: "));
 	PGM_FUNC(kputs)(name);
 	#if CONFIG_PRINTF
-		PGM_FUNC(kprintf)(PSTR(" = 0x%x\n"), value);
+		PGM_FUNC(kprintf)(PGM_STR(" = 0x%x\n"), (unsigned int)value);
 	#else
 		(void)value;
 		kputchar('\n');
@@ -381,10 +498,10 @@ int PGM_FUNC(__check_wall)(long *wall, int size, const char * PGM_ATTR name, con
 		if (wall[i] != WALL_VALUE)
 		{
 			klocation(file, line);
-			PGM_FUNC(kputs)(PSTR("Wall broken: "));
+			PGM_FUNC(kputs)(PGM_STR("Wall broken: "));
 			PGM_FUNC(kputs)(name);
 			#if CONFIG_PRINTF
-				PGM_FUNC(kprintf)(PSTR("[%d] (0x%p) = 0x%lx\n"), i, wall + i, wall[i]);
+				PGM_FUNC(kprintf)(PGM_STR("[%d] (0x%p) = 0x%lx\n"), i, wall + i, wall[i]);
 			#else
 				kputchar('\n');
 			#endif
@@ -398,7 +515,7 @@ int PGM_FUNC(__check_wall)(long *wall, int size, const char * PGM_ATTR name, con
 
 #if CONFIG_PRINTF
 
-/*!
+/**
  * Dump binary data in hex
  */
 void kdump(const void *_buf, size_t len)