kputchar(): New public function; Add missing dummy inlines for \!_DEBUG.
[bertos.git] / drv / kdebug.c
index 99a82d1a2e9b8bd97668ef1b6ace372bd50b60f2..cdcfe1ea92bdf3ae9e559473e7c940d7cd462085 100755 (executable)
@@ -3,7 +3,7 @@
  * <!--
  * Copyright 2003,2004 Develer S.r.l. (http://www.develer.com/)
  * Copyright 2000,2001,2002 Bernardo Innocenti <bernie@codewiz.org>
- * All Rights Reserved.
+ * This file is part of DevLib - See devlib/README for information.
  * -->
  *
  * \brief General pourpose debug functions.
 
 /*
  * $Log$
+ * Revision 1.11  2004/08/24 16:19:08  bernie
+ * kputchar(): New public function; Add missing dummy inlines for \!_DEBUG.
+ *
+ * Revision 1.10  2004/08/04 15:57:50  rasky
+ * Cambiata la putchar per kdebug per DSP56k: la nuova funzione e' quella piu' a basso livello (assembly)
+ *
+ * Revision 1.9  2004/08/02 20:20:29  aleph
+ * Merge from project_ks
+ *
+ * Revision 1.8  2004/07/30 14:26:33  rasky
+ * Semplificato l'output dell'ASSERT
+ * Aggiunta ASSERT2 con stringa di help opzionalmente disattivabile
+ *
+ * Revision 1.7  2004/07/30 14:15:53  rasky
+ * Nuovo supporto unificato per detect della CPU
+ *
+ * Revision 1.6  2004/07/18 21:49:28  bernie
+ * Add ATmega8 support.
+ *
+ * Revision 1.5  2004/06/27 15:20:26  aleph
+ * Change UNUSED() macro to accept two arguments: type and name;
+ * Add macro GNUC_PREREQ to detect GCC version during build;
+ * Some spacing cleanups and typo fix
+ *
+ * Revision 1.4  2004/06/06 18:09:51  bernie
+ * Import DSP56800 changes; Print broken wall bricks in hex.
+ *
+ * Revision 1.3  2004/06/03 11:27:09  bernie
+ * Add dual-license information.
+ *
  * Revision 1.2  2004/05/23 18:21:53  bernie
  * Trim CVS logs and cleanup header info.
  *
 
 #if defined(_EMUL)
        #include <stdio.h>
-       #define KDBG_WAIT_READY()      do {/*nop*/} while(0)
+       #define KDBG_WAIT_READY()      do { /*nop*/ } while(0)
        #define KDBG_WRITE_CHAR(c)     putchar((c))
-       #define KDBG_MASK_IRQ(old)     do {/*nop*/} while(0)
-       #define KDBG_RESTORE_IRQ()     do {/*nop*/} while(0)
-#elif defined(__I196__)
+       #define KDBG_MASK_IRQ(old)     do { (void)(old); } while(0)
+       #define KDBG_RESTORE_IRQ()     do { /*nop*/ } while(0)
+       typedef kdbg_irqsave_t         char; /* unused */
+#elif CPU_I196
        #include "Util196.h"
        #define KDBG_WAIT_READY()      do {} while (!(SP_STAT & (SPSF_TX_EMPTY | SPSF_TX_INT)))
        #define KDBG_WRITE_CHAR(c)     do { SBUF = (c); } while(0)
                        INT_MASK1 &= ~INT1F_TI; \
                } while(0)
        #define KDBG_RESTORE_IRQ(old)  do { INT_MASK1 |= (old); }
-#elif defined(__AVR__)
+       typedef kdbg_irqsave_t         uint16_t; /* FIXME: unconfirmed */
+#elif CPU_AVR
        #include <avr/io.h>
        #if CONFIG_KDEBUG_PORT == 0
-               #ifndef __AVR_ATmega103__
+
+               /* 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)
+                       #define SER_UART0_485_RX    do {} while (0)
+               #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
+               #endif
+
+               #if defined(__AVR_ATmega64__)
                        #define UCR UCSR0B
                        #define UDR UDR0
                        #define USR UCSR0A
+               #elif defined(__AVR_ATmega8__)
+                       #define UCR UCSRB
+                       #define USR UCSRA
                #endif
+
                #define KDBG_WAIT_READY()     do { loop_until_bit_is_set(USR, UDRE); } while(0)
-               #define KDBG_WRITE_CHAR(c)    do { UCR |= BV(TXEN); UDR = (c); } while(0)
-               #define KDBG_MASK_IRQ(old)    do { (old) = UCR & BV(TXCIE); cbi(UCR, TXCIE); } while(0)
-               #define KDBG_RESTORE_IRQ(old) do { UCR |= (old); } while(0)
+               #define KDBG_WAIT_TXDONE()    do { loop_until_bit_is_set(USR, TXC); } while(0)
+               /*
+                * BUG: before sending a new character the TXC flag is cleared to allow
+                * KDBG_WAIT_TXDONE() to work properly, but, if KDBG_WRITE_CHAR() is called
+                * after the RXC flag is set by hardware, a new TXC could be generated
+                * after we clear it and before the new character is put in UDR. In this
+                * case if a 485 is used the transceiver will be put in RX mode while
+                * transmitting the last char.
+                */
+               #define KDBG_WRITE_CHAR(c)    do { USR |= BV(TXC); UDR = (c); } while(0)
+
+               #define KDBG_MASK_IRQ(old)    do { \
+                       SER_UART0_485_TX; \
+                       (old) = UCR; \
+                       UCR |= BV(TXEN); \
+                       UCR &= ~(BV(TXCIE) | BV(UDRIE)); \
+               } while(0)
+
+               #define KDBG_RESTORE_IRQ(old) do { \
+                       KDBG_WAIT_TXDONE(); \
+                       SER_UART0_485_RX; \
+                       UCR = (old); \
+               } while(0)
+
+               typedef kdbg_irqsave_t uint8_t;
+
        #elif CONFIG_KDEBUG_PORT == 1
+
+               /* 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)
+                       #define SER_UART1_485_RX    do {} while (0)
+               #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
+               #endif
+
                #define KDBG_WAIT_READY()     do { loop_until_bit_is_set(UCSR1A, UDRE); } while(0)
-               #define KDBG_WRITE_CHAR(c)    do { UCSR1B |= BV(TXEN); UDR1 = (c); } while(0)
-               #define KDBG_MASK_IRQ(old)    do { (old) = UCSR1B & BV(TXCIE); cbi(UCSR1B, TXCIE); } while(0)
-               #define KDBG_RESTORE_IRQ(old) do { UCSR1B |= (old); } 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_MASK_IRQ(old)    do { \
+                       SER_UART1_485_TX; \
+                       (old) = UCSR1B; \
+                       UCSR1B |= BV(TXEN); \
+                       UCSR1B &= ~(BV(TXCIE) | BV(UDRIE)); \
+               } while(0)
+
+               #define KDBG_RESTORE_IRQ(old) do { \
+                       KDBG_WAIT_TXDONE(); \
+                       SER_UART1_485_RX; \
+                       UCSR1B = (old); \
+               } while(0)
+
+               typedef kdbg_irqsave_t uint8_t;
        #else
                #error CONFIG_KDEBUG_PORT should be either 0 or 1
        #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 kdbg_irqsave_t            uint8_t; /* unused */
 #else
        #error Unknown architecture
 #endif
 
 void kdbg_init(void)
 {
-#if defined(__I196__)
+#if CPU_I196
 
        /* Set serial port for 19200bps 8N1 */
        INT_MASK1 &= ~(INT1F_TI | INT1F_RI);
@@ -82,36 +190,34 @@ void kdbg_init(void)
        BAUD_RATE = 0x33;
        BAUD_RATE = 0x80;
 
-#elif defined(__AVR__)
+#elif CPU_AVR
 
        /* Compute the baud rate */
        uint16_t period = (((CLOCK_FREQ / 16UL) + (CONFIG_KDEBUG_BAUDRATE / 2)) / CONFIG_KDEBUG_BAUDRATE) - 1;
 
-       #ifdef __AVR_ATmega64__
+       #if defined(__AVR_ATmega64__)
                #if CONFIG_KDEBUG_PORT == 0
-
-                       /* Set the baud rate */
                        UBRR0H = (uint8_t)(period>>8);
                        UBRR0L = (uint8_t)period;
-
+                       SER_UART0_485_INIT;
                #elif CONFIG_KDEBUG_PORT == 1
-
                        UBRR1H = (uint8_t)(period>>8);
                        UBRR1L = (uint8_t)period;
-
+                       SER_UART1_485_INIT;
                #else
-                       #error CONFIG_KDEBUG_PORT should be either 0 or 1
+                       #error CONFIG_KDEBUG_PORT must be either 0 or 1
                #endif
-       #elif defined (__AVR_ATmega103__)
-
-               /* Set the baud rate */
+       #elif defined(__AVR_ATmega8__)
+               UBRRH = (uint8_t)(period>>8);
+               UBRRL = (uint8_t)period;
+       #elif defined(__AVR_ATmega103__)
                UBRR = (uint8_t)period;
-
+               SER_UART0_485_INIT;
        #else
                #error Unknown arch
        #endif
 
-#endif /* !__I196__ && !__AVR__ */
+#endif /* !CPU_I196 && !CPU_AVR */
 
        kputs("\n\n*** DBG START ***\n");
 }
@@ -120,7 +226,7 @@ void kdbg_init(void)
 /*!
  * Output one character to the debug console
  */
-static void kputchar(char c, UNUSED(void *unused))
+static void __kputchar(char c, UNUSED(void *, unused))
 {
        /* Poll while serial buffer is still busy */
        KDBG_WAIT_READY();
@@ -136,16 +242,29 @@ static void kputchar(char c, UNUSED(void *unused))
 }
 
 
+void kputchar(char c)
+{
+       /* Mask serial TX intr */
+       kdbg_irqsave_t irqsave;
+       KDBG_MASK_IRQ(irqsave);
+
+       __kputchar(c, 0);
+
+       /* Restore serial TX intr */
+       KDBG_RESTORE_IRQ(irqsave);
+}
+
+
 void PGM_FUNC(kprintf)(const char * PGM_ATTR fmt, ...)
 {
        va_list ap;
 
        /* Mask serial TX intr */
-       unsigned char irqsave;
+       kdbg_irqsave_t irqsave;
        KDBG_MASK_IRQ(irqsave);
 
        va_start(ap, fmt);
-       PGM_FUNC(_formatted_write)(fmt, kputchar, 0, ap);
+       PGM_FUNC(_formatted_write)(fmt, __kputchar, 0, ap);
        va_end(ap);
 
        /* Restore serial TX intr */
@@ -158,11 +277,11 @@ void PGM_FUNC(kputs)(const char * PGM_ATTR str)
        char c;
 
        /* Mask serial TX intr */
-       unsigned char irqsave;
+       kdbg_irqsave_t irqsave;
        KDBG_MASK_IRQ(irqsave);
 
        while ((c = PGM_READ_CHAR(str++)))
-               kputchar(c, 0);
+               __kputchar(c, 0);
 
        KDBG_RESTORE_IRQ(irqsave);
 }
@@ -171,9 +290,9 @@ void PGM_FUNC(kputs)(const char * PGM_ATTR str)
 int PGM_FUNC(__assert)(const char * PGM_ATTR cond, const char *file, int line)
 {
        PGM_FUNC(kputs)(file);
-       PGM_FUNC(kprintf)(PSTR(":%d: Assertion failed: \""), line);
+       PGM_FUNC(kprintf)(PSTR(":%d: Assertion failed: "), line);
        PGM_FUNC(kputs)(cond);
-       PGM_FUNC(kputs)(PSTR("\"\n"));
+       PGM_FUNC(kputs)(PSTR("\n"));
        return 1;
 }
 
@@ -203,7 +322,7 @@ int __check_wall(long *wall, int size, const char *name, const char *file, int l
        {
                if (wall[i] != WALL_VALUE)
                {
-                       kprintf("%s:%d: Wall broken: %s[%d] (0x%p) = %ld\n",
+                       kprintf("%s:%d: Wall broken: %s[%d] (0x%p) = 0x%lx\n",
                                file, line, name, i, wall + i, wall[i]);
                        fail = 1;
                }