4 * Copyright 2003, 2004 Develer S.r.l. (http://www.develer.com/)
5 * Copyright 2000, 2001, 2002 Bernardo Innocenti <bernie@codewiz.org>
6 * This file is part of DevLib - See devlib/README for information.
9 * \brief General pourpose debug support for embedded systems (implementation).
11 * \author Bernardo Innocenti <bernie@develer.com>
12 * \author Stefano Fedrigo <aleph@develer.com>
17 *#* Revision 1.16 2004/10/03 18:40:50 bernie
18 *#* Use new CPU macros.
20 *#* Revision 1.15 2004/09/14 21:03:46 bernie
21 *#* Use debug.h instead of kdebug.h.
23 *#* Revision 1.14 2004/09/06 21:39:56 bernie
24 *#* Allow partial redefinition of BUS macros.
26 *#* Revision 1.13 2004/08/29 22:04:26 bernie
27 *#* Convert 485 macros to generic BUS macros;
28 *#* kputchar(): New public function.
30 *#* Revision 1.12 2004/08/25 14:12:08 rasky
31 *#* Aggiornato il comment block dei log RCS
33 *#* Revision 1.11 2004/08/24 16:19:08 bernie
34 *#* kputchar(): New public function; Add missing dummy inlines for \!_DEBUG.
36 *#* Revision 1.10 2004/08/04 15:57:50 rasky
37 *#* Cambiata la putchar per kdebug per DSP56k: la nuova funzione e' quella piu' a basso livello (assembly)
39 *#* Revision 1.9 2004/08/02 20:20:29 aleph
40 *#* Merge from project_ks
42 *#* Revision 1.8 2004/07/30 14:26:33 rasky
43 *#* Semplificato l'output dell'ASSERT
44 *#* Aggiunta ASSERT2 con stringa di help opzionalmente disattivabile
46 *#* Revision 1.7 2004/07/30 14:15:53 rasky
47 *#* Nuovo supporto unificato per detect della CPU
49 *#* Revision 1.6 2004/07/18 21:49:28 bernie
50 *#* Add ATmega8 support.
52 *#* Revision 1.5 2004/06/27 15:20:26 aleph
53 *#* Change UNUSED() macro to accept two arguments: type and name;
54 *#* Add macro GNUC_PREREQ to detect GCC version during build;
55 *#* Some spacing cleanups and typo fix
57 *#* Revision 1.4 2004/06/06 18:09:51 bernie
58 *#* Import DSP56800 changes; Print broken wall bricks in hex.
60 *#* Revision 1.3 2004/06/03 11:27:09 bernie
61 *#* Add dual-license information.
63 *#* Revision 1.2 2004/05/23 18:21:53 bernie
64 *#* Trim CVS logs and cleanup header info.
73 #include <mware/formatwr.h> /* for _formatted_write() */
79 #define KDBG_WAIT_READY() do { /*nop*/ } while(0)
80 #define KDBG_WRITE_CHAR(c) putchar((c))
81 #define KDBG_MASK_IRQ(old) do { (void)(old); } while(0)
82 #define KDBG_RESTORE_IRQ(old) do { /*nop*/ } while(0)
83 typedef char kdbg_irqsave_t; /* unused */
86 #define KDBG_WAIT_READY() do {} while (!(SP_STAT & (SPSF_TX_EMPTY | SPSF_TX_INT)))
87 #define KDBG_WRITE_CHAR(c) do { SBUF = (c); } while(0)
88 #define KDBG_MASK_IRQ(old) \
90 (old) = INT_MASK1 & INT1F_TI; \
91 INT_MASK1 &= ~INT1F_TI; \
93 #define KDBG_RESTORE_IRQ(old) do { INT_MASK1 |= (old); }
94 typedef uint16_t kdbg_irqsave_t; /* FIXME: unconfirmed */
98 #if CONFIG_KDEBUG_PORT == 0
101 * Support for special bus policies or external transceivers
102 * on UART0 (to be overridden in "hw.h").
104 #ifndef KDBG_UART0_BUS_INIT
105 #define KDBG_UART0_BUS_INIT do {} while (0)
107 #ifndef KDBG_UART0_BUS_RX
108 #define KDBG_UART0_BUS_RX do {} while (0)
110 #ifndef KDBG_UART0_BUS_TX
111 #define KDBG_UART0_BUS_TX do {} while (0)
118 #elif CPU_AVR_ATMEGA8
125 #define KDBG_WAIT_READY() do { loop_until_bit_is_set(USR, UDRE); } while(0)
126 #define KDBG_WAIT_TXDONE() do { loop_until_bit_is_set(USR, TXC); } while(0)
129 * We must clear the TXC flag before sending a new character to allow
130 * KDBG_WAIT_TXDONE() to work properly.
132 * BUG: if KDBG_WRITE_CHAR() is called after the TXC flag is set by hardware,
133 * a new TXC could be generated after we've cleared it and before the new
134 * character is written to UDR. On a 485 bus, the transceiver will be put
135 * in RX mode while still transmitting the last char.
137 #define KDBG_WRITE_CHAR(c) do { USR |= BV(TXC); UDR = (c); } while(0)
139 #define KDBG_MASK_IRQ(old) do { \
142 UCR &= ~(BV(TXCIE) | BV(UDRIE)); \
146 #define KDBG_RESTORE_IRQ(old) do { \
147 KDBG_WAIT_TXDONE(); \
152 typedef uint8_t kdbg_irqsave_t;
154 #elif CONFIG_KDEBUG_PORT == 1
157 * Support for special bus policies or external transceivers
158 * on UART1 (to be overridden in "hw.h").
160 #ifndef KDBG_UART1_BUS_INIT
161 #define KDBG_UART1_BUS_INIT do {} while (0)
163 #ifndef KDBG_UART1_BUS_RX
164 #define KDBG_UART1_BUS_RX do {} while (0)
166 #ifndef KDBG_UART1_BUS_TX
167 #define KDBG_UART1_BUS_TX do {} while (0)
170 #define KDBG_WAIT_READY() do { loop_until_bit_is_set(UCSR1A, UDRE); } while(0)
171 #define KDBG_WAIT_TXDONE() do { loop_until_bit_is_set(UCSR1A, TXC); } while(0)
172 #define KDBG_WRITE_CHAR(c) do { UCSR1A |= BV(TXC); UDR1 = (c); } while(0)
174 #define KDBG_MASK_IRQ(old) do { \
176 UCSR1B |= BV(TXEN); \
177 UCSR1B &= ~(BV(TXCIE) | BV(UDRIE)); \
181 #define KDBG_RESTORE_IRQ(old) do { \
182 KDBG_WAIT_TXDONE(); \
187 typedef uint8_t kdbg_irqsave_t;
189 #error CONFIG_KDEBUG_PORT should be either 0 or 1
191 #elif defined(__MWERKS__) && CPU_DSP56K
192 /* Debugging go through the JTAG interface. The MSL library already
193 implements the console I/O correctly. */
195 #define KDBG_WAIT_READY() do { } while (0)
196 #define KDBG_WRITE_CHAR(c) __put_char(c, stdout)
197 #define KDBG_MASK_IRQ(old) do { (void)(old); } while (0)
198 #define KDBG_RESTORE_IRQ(old) do { (void)(old); } while (0)
199 typedef uint8_t kdbg_irqsave_t; /* unused */
201 #error Unknown architecture
209 /* Set serial port for 19200bps 8N1 */
210 INT_MASK1 &= ~(INT1F_TI | INT1F_RI);
211 SP_CON = SPCF_RECEIVE_ENABLE | SPCF_MODE1;
212 ioc1_img |= IOC1F_TXD_SEL | IOC1F_EXTINT_SRC;
219 /* Compute the baud rate */
220 uint16_t period = (((CLOCK_FREQ / 16UL) + (CONFIG_KDEBUG_BAUDRATE / 2)) / CONFIG_KDEBUG_BAUDRATE) - 1;
223 #if CONFIG_KDEBUG_PORT == 0
224 UBRR0H = (uint8_t)(period>>8);
225 UBRR0L = (uint8_t)period;
227 #elif CONFIG_KDEBUG_PORT == 1
228 UBRR1H = (uint8_t)(period>>8);
229 UBRR1L = (uint8_t)period;
232 #error CONFIG_KDEBUG_PORT must be either 0 or 1
234 #elif CPU_AVR_ATMEGA8
235 UBRRH = (uint8_t)(period>>8);
236 UBRRL = (uint8_t)period;
237 #elif CPU_AVR_ATMEGA103
238 UBRR = (uint8_t)period;
244 #endif /* !CPU_I196 && !CPU_AVR */
246 kputs("\n\n*** DBG START ***\n");
251 * Output one character to the debug console
253 static void __kputchar(char c, UNUSED(void *, unused))
255 /* Poll while serial buffer is still busy */
258 /* Send '\n' as '\r\n' for dumb terminals */
261 KDBG_WRITE_CHAR('\r');
269 void kputchar(char c)
271 /* Mask serial TX intr */
272 kdbg_irqsave_t irqsave;
273 KDBG_MASK_IRQ(irqsave);
277 /* Restore serial TX intr */
278 KDBG_RESTORE_IRQ(irqsave);
282 void PGM_FUNC(kprintf)(const char * PGM_ATTR fmt, ...)
286 /* Mask serial TX intr */
287 kdbg_irqsave_t irqsave;
288 KDBG_MASK_IRQ(irqsave);
291 PGM_FUNC(_formatted_write)(fmt, __kputchar, 0, ap);
294 /* Restore serial TX intr */
295 KDBG_RESTORE_IRQ(irqsave);
299 void PGM_FUNC(kputs)(const char * PGM_ATTR str)
303 /* Mask serial TX intr */
304 kdbg_irqsave_t irqsave;
305 KDBG_MASK_IRQ(irqsave);
307 while ((c = PGM_READ_CHAR(str++)))
310 KDBG_RESTORE_IRQ(irqsave);
314 int PGM_FUNC(__assert)(const char * PGM_ATTR cond, const char * PGM_ATTR file, int line)
316 PGM_FUNC(kputs)(file);
317 PGM_FUNC(kprintf)(PSTR(":%d: Assertion failed: "), line);
318 PGM_FUNC(kputs)(cond);
319 PGM_FUNC(kputs)(PSTR("\n"));
324 int PGM_FUNC(__invalid_ptr)(void *value, const char * PGM_ATTR name, const char * PGM_ATTR file, int line)
326 PGM_FUNC(kputs)(file);
327 PGM_FUNC(kprintf)(PSTR(":%d: Invalid pointer: "), line);
328 PGM_FUNC(kputs)(name);
329 PGM_FUNC(kprintf)(PSTR(" = 0x%x\n"), value);
334 void __init_wall(long *wall, int size)
337 *wall++ = WALL_VALUE;
341 int __check_wall(long *wall, int size, const char *name, const char *file, int line)
345 for (i = 0; i < size; i++)
347 if (wall[i] != WALL_VALUE)
349 kprintf("%s:%d: Wall broken: %s[%d] (0x%p) = 0x%lx\n",
350 file, line, name, i, wall + i, wall[i]);
360 * Dump binary data in hex
362 void kdump(const void *_buf, size_t len)
364 const unsigned char *buf = (const unsigned char *)_buf;
367 kprintf("%02X", *buf++);