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).
12 * \author Bernardo Innocenti <bernie@develer.com>
13 * \author Stefano Fedrigo <aleph@develer.com>
18 *#* Revision 1.19 2004/12/31 17:47:45 bernie
19 *#* Rename UNUSED() to UNUSED_ARG().
21 *#* Revision 1.18 2004/12/08 08:52:00 bernie
22 *#* Save some more RAM on AVR.
24 *#* Revision 1.17 2004/10/03 18:41:28 bernie
25 *#* Restore \version header killed by mistake in previous commit.
27 *#* Revision 1.16 2004/10/03 18:40:50 bernie
28 *#* Use new CPU macros.
30 *#* Revision 1.15 2004/09/14 21:03:46 bernie
31 *#* Use debug.h instead of kdebug.h.
33 *#* Revision 1.14 2004/09/06 21:39:56 bernie
34 *#* Allow partial redefinition of BUS macros.
36 *#* Revision 1.13 2004/08/29 22:04:26 bernie
37 *#* Convert 485 macros to generic BUS macros;
38 *#* kputchar(): New public function.
40 *#* Revision 1.12 2004/08/25 14:12:08 rasky
41 *#* Aggiornato il comment block dei log RCS
43 *#* Revision 1.11 2004/08/24 16:19:08 bernie
44 *#* kputchar(): New public function; Add missing dummy inlines for \!_DEBUG.
46 *#* Revision 1.10 2004/08/04 15:57:50 rasky
47 *#* Cambiata la putchar per kdebug per DSP56k: la nuova funzione e' quella piu' a basso livello (assembly)
49 *#* Revision 1.9 2004/08/02 20:20:29 aleph
50 *#* Merge from project_ks
52 *#* Revision 1.8 2004/07/30 14:26:33 rasky
53 *#* Semplificato l'output dell'ASSERT
54 *#* Aggiunta ASSERT2 con stringa di help opzionalmente disattivabile
56 *#* Revision 1.7 2004/07/30 14:15:53 rasky
57 *#* Nuovo supporto unificato per detect della CPU
59 *#* Revision 1.6 2004/07/18 21:49:28 bernie
60 *#* Add ATmega8 support.
62 *#* Revision 1.5 2004/06/27 15:20:26 aleph
63 *#* Change UNUSED() macro to accept two arguments: type and name;
64 *#* Add macro GNUC_PREREQ to detect GCC version during build;
65 *#* Some spacing cleanups and typo fix
67 *#* Revision 1.4 2004/06/06 18:09:51 bernie
68 *#* Import DSP56800 changes; Print broken wall bricks in hex.
70 *#* Revision 1.3 2004/06/03 11:27:09 bernie
71 *#* Add dual-license information.
73 *#* Revision 1.2 2004/05/23 18:21:53 bernie
74 *#* Trim CVS logs and cleanup header info.
83 #include <mware/formatwr.h> /* for _formatted_write() */
89 #define KDBG_WAIT_READY() do { /*nop*/ } while(0)
90 #define KDBG_WRITE_CHAR(c) putchar((c))
91 #define KDBG_MASK_IRQ(old) do { (void)(old); } while(0)
92 #define KDBG_RESTORE_IRQ(old) do { /*nop*/ } while(0)
93 typedef char kdbg_irqsave_t; /* unused */
96 #define KDBG_WAIT_READY() do {} while (!(SP_STAT & (SPSF_TX_EMPTY | SPSF_TX_INT)))
97 #define KDBG_WRITE_CHAR(c) do { SBUF = (c); } while(0)
98 #define KDBG_MASK_IRQ(old) \
100 (old) = INT_MASK1 & INT1F_TI; \
101 INT_MASK1 &= ~INT1F_TI; \
103 #define KDBG_RESTORE_IRQ(old) do { INT_MASK1 |= (old); }
104 typedef uint16_t kdbg_irqsave_t; /* FIXME: unconfirmed */
108 #if CONFIG_KDEBUG_PORT == 0
111 * Support for special bus policies or external transceivers
112 * on UART0 (to be overridden in "hw.h").
114 #ifndef KDBG_UART0_BUS_INIT
115 #define KDBG_UART0_BUS_INIT do {} while (0)
117 #ifndef KDBG_UART0_BUS_RX
118 #define KDBG_UART0_BUS_RX do {} while (0)
120 #ifndef KDBG_UART0_BUS_TX
121 #define KDBG_UART0_BUS_TX do {} while (0)
128 #elif CPU_AVR_ATMEGA8
135 #define KDBG_WAIT_READY() do { loop_until_bit_is_set(USR, UDRE); } while(0)
136 #define KDBG_WAIT_TXDONE() do { loop_until_bit_is_set(USR, TXC); } while(0)
139 * We must clear the TXC flag before sending a new character to allow
140 * KDBG_WAIT_TXDONE() to work properly.
142 * BUG: if KDBG_WRITE_CHAR() is called after the TXC flag is set by hardware,
143 * a new TXC could be generated after we've cleared it and before the new
144 * character is written to UDR. On a 485 bus, the transceiver will be put
145 * in RX mode while still transmitting the last char.
147 #define KDBG_WRITE_CHAR(c) do { USR |= BV(TXC); UDR = (c); } while(0)
149 #define KDBG_MASK_IRQ(old) do { \
152 UCR &= ~(BV(TXCIE) | BV(UDRIE)); \
156 #define KDBG_RESTORE_IRQ(old) do { \
157 KDBG_WAIT_TXDONE(); \
162 typedef uint8_t kdbg_irqsave_t;
164 #elif CONFIG_KDEBUG_PORT == 1
167 * Support for special bus policies or external transceivers
168 * on UART1 (to be overridden in "hw.h").
170 #ifndef KDBG_UART1_BUS_INIT
171 #define KDBG_UART1_BUS_INIT do {} while (0)
173 #ifndef KDBG_UART1_BUS_RX
174 #define KDBG_UART1_BUS_RX do {} while (0)
176 #ifndef KDBG_UART1_BUS_TX
177 #define KDBG_UART1_BUS_TX do {} while (0)
180 #define KDBG_WAIT_READY() do { loop_until_bit_is_set(UCSR1A, UDRE); } while(0)
181 #define KDBG_WAIT_TXDONE() do { loop_until_bit_is_set(UCSR1A, TXC); } while(0)
182 #define KDBG_WRITE_CHAR(c) do { UCSR1A |= BV(TXC); UDR1 = (c); } while(0)
184 #define KDBG_MASK_IRQ(old) do { \
186 UCSR1B |= BV(TXEN); \
187 UCSR1B &= ~(BV(TXCIE) | BV(UDRIE)); \
191 #define KDBG_RESTORE_IRQ(old) do { \
192 KDBG_WAIT_TXDONE(); \
197 typedef uint8_t kdbg_irqsave_t;
199 #error CONFIG_KDEBUG_PORT should be either 0 or 1
201 #elif defined(__MWERKS__) && CPU_DSP56K
202 /* Debugging go through the JTAG interface. The MSL library already
203 implements the console I/O correctly. */
205 #define KDBG_WAIT_READY() do { } while (0)
206 #define KDBG_WRITE_CHAR(c) __put_char(c, stdout)
207 #define KDBG_MASK_IRQ(old) do { (void)(old); } while (0)
208 #define KDBG_RESTORE_IRQ(old) do { (void)(old); } while (0)
209 typedef uint8_t kdbg_irqsave_t; /* unused */
211 #error Unknown architecture
219 /* Set serial port for 19200bps 8N1 */
220 INT_MASK1 &= ~(INT1F_TI | INT1F_RI);
221 SP_CON = SPCF_RECEIVE_ENABLE | SPCF_MODE1;
222 ioc1_img |= IOC1F_TXD_SEL | IOC1F_EXTINT_SRC;
229 /* Compute the baud rate */
230 uint16_t period = (((CLOCK_FREQ / 16UL) + (CONFIG_KDEBUG_BAUDRATE / 2)) / CONFIG_KDEBUG_BAUDRATE) - 1;
233 #if CONFIG_KDEBUG_PORT == 0
234 UBRR0H = (uint8_t)(period>>8);
235 UBRR0L = (uint8_t)period;
237 #elif CONFIG_KDEBUG_PORT == 1
238 UBRR1H = (uint8_t)(period>>8);
239 UBRR1L = (uint8_t)period;
242 #error CONFIG_KDEBUG_PORT must be either 0 or 1
244 #elif CPU_AVR_ATMEGA8
245 UBRRH = (uint8_t)(period>>8);
246 UBRRL = (uint8_t)period;
247 #elif CPU_AVR_ATMEGA103
248 UBRR = (uint8_t)period;
254 #endif /* !CPU_I196 && !CPU_AVR */
256 kputs("\n\n*** DBG START ***\n");
261 * Output one character to the debug console
263 static void __kputchar(char c, UNUSED_ARG(void *, unused))
265 /* Poll while serial buffer is still busy */
268 /* Send '\n' as '\r\n' for dumb terminals */
271 KDBG_WRITE_CHAR('\r');
279 void kputchar(char c)
281 /* Mask serial TX intr */
282 kdbg_irqsave_t irqsave;
283 KDBG_MASK_IRQ(irqsave);
287 /* Restore serial TX intr */
288 KDBG_RESTORE_IRQ(irqsave);
292 void PGM_FUNC(kprintf)(const char * PGM_ATTR fmt, ...)
298 /* Mask serial TX intr */
299 kdbg_irqsave_t irqsave;
300 KDBG_MASK_IRQ(irqsave);
303 PGM_FUNC(_formatted_write)(fmt, __kputchar, 0, ap);
306 /* Restore serial TX intr */
307 KDBG_RESTORE_IRQ(irqsave);
309 /* A better than nothing printf() surrogate. */
310 PGM_FUNC(kputs)(fmt);
311 #endif /* CONFIG_PRINTF */
315 void PGM_FUNC(kputs)(const char * PGM_ATTR str)
319 /* Mask serial TX intr */
320 kdbg_irqsave_t irqsave;
321 KDBG_MASK_IRQ(irqsave);
323 while ((c = PGM_READ_CHAR(str++)))
326 KDBG_RESTORE_IRQ(irqsave);
331 * Cheap function to print small integers without using printf().
333 static int kputnum(int num)
341 digit = num / divisor;
344 if (digit || output_len || divisor == 1)
346 kputchar(digit + '0');
350 while (divisor /= 10);
356 static void klocation(const char * PGM_ATTR file, int line)
358 PGM_FUNC(kputs)(file);
361 PGM_FUNC(kputs)(PSTR(": "));
364 int PGM_FUNC(__assert)(const char * PGM_ATTR cond, const char * PGM_ATTR file, int line)
366 klocation(file, line);
367 PGM_FUNC(kputs)(PSTR("Assertion failed: "));
368 PGM_FUNC(kputs)(cond);
374 int PGM_FUNC(__invalid_ptr)(void *value, const char * PGM_ATTR name, const char * PGM_ATTR file, int line)
376 klocation(file, line);
377 PGM_FUNC(kputs)(PSTR("Invalid ptr: "));
378 PGM_FUNC(kputs)(name);
380 PGM_FUNC(kprintf)(PSTR(" = 0x%x\n"), value);
389 void __init_wall(long *wall, int size)
392 *wall++ = WALL_VALUE;
396 int PGM_FUNC(__check_wall)(long *wall, int size, const char * PGM_ATTR name, const char * PGM_ATTR file, int line)
400 for (i = 0; i < size; i++)
402 if (wall[i] != WALL_VALUE)
404 klocation(file, line);
405 PGM_FUNC(kputs)(PSTR("Wall broken: "));
406 PGM_FUNC(kputs)(name);
408 PGM_FUNC(kprintf)(PSTR("[%d] (0x%p) = 0x%lx\n"), i, wall + i, wall[i]);
423 * Dump binary data in hex
425 void kdump(const void *_buf, size_t len)
427 const unsigned char *buf = (const unsigned char *)_buf;
430 kprintf("%02X", *buf++);
434 #endif /* CONFIG_PRINTF */