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d1887de
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Add longer debug delays to reset/debug_mode entry
author
Keith Packard
<keithp@keithp.com>
Tue, 21 Apr 2009 09:07:08 +0000
(
02:07
-0700)
committer
Keith Packard
<keithp@keithp.com>
Tue, 21 Apr 2009 09:07:08 +0000
(
02:07
-0700)
ao_dbg.c
patch
|
blob
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diff --git
a/ao_dbg.c
b/ao_dbg.c
index 76d4bd9ce63a61ae5f364f10e6de8d31b07bf962..2ee33b71c26084130c165a00c980fe9373cf2c50 100644
(file)
--- a/
ao_dbg.c
+++ b/
ao_dbg.c
@@
-29,10
+29,16
@@
static void
ao_dbg_send_bits(uint8_t msk, uint8_t val)
{
P0 = (P0 & ~msk) | (val & msk);
ao_dbg_send_bits(uint8_t msk, uint8_t val)
{
P0 = (P0 & ~msk) | (val & msk);
+ _asm
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ _endasm;
}
}
-#define ao_dbg_pause() do { _asm nop; nop; nop _endasm; } while (0);
-
void
ao_dbg_send_byte(uint8_t byte)
{
void
ao_dbg_send_byte(uint8_t byte)
{
@@
-46,9
+52,7
@@
ao_dbg_send_byte(uint8_t byte)
d = DBG_DATA;
byte <<= 1;
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA, DBG_CLOCK|d);
d = DBG_DATA;
byte <<= 1;
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA, DBG_CLOCK|d);
- ao_dbg_pause();
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA, 0 |d);
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA, 0 |d);
- ao_dbg_pause();
}
P0DIR &= ~DBG_DATA;
}
}
P0DIR &= ~DBG_DATA;
}
@@
-62,11
+66,9
@@
ao_dbg_recv_byte(void)
for (b = 0; b < 8; b++) {
byte = byte << 1;
ao_dbg_send_bits(DBG_CLOCK, DBG_CLOCK);
for (b = 0; b < 8; b++) {
byte = byte << 1;
ao_dbg_send_bits(DBG_CLOCK, DBG_CLOCK);
- ao_dbg_pause();
if (DBG_DATA_PIN)
byte |= 1;
ao_dbg_send_bits(DBG_CLOCK, 0);
if (DBG_DATA_PIN)
byte |= 1;
ao_dbg_send_bits(DBG_CLOCK, 0);
- ao_dbg_pause();
}
return byte;
}
}
return byte;
}
@@
-189,28
+191,51
@@
ao_dbg_set_pins(void)
P0DIR = DBG_RESET_N | DBG_CLOCK;
}
P0DIR = DBG_RESET_N | DBG_CLOCK;
}
+static void
+ao_dbg_long_delay(void)
+{
+ uint8_t n;
+
+ for (n = 0; n < 20; n++)
+ _asm nop _endasm;
+}
+
void
ao_dbg_debug_mode(void)
{
ao_dbg_set_pins();
void
ao_dbg_debug_mode(void)
{
ao_dbg_set_pins();
+ ao_dbg_long_delay();
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA|DBG_RESET_N);
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA|DBG_RESET_N);
+ ao_dbg_long_delay();
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, 0 |DBG_DATA| 0 );
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, 0 |DBG_DATA| 0 );
+ ao_dbg_long_delay();
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA| 0 );
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA| 0 );
+ ao_dbg_long_delay();
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, 0 |DBG_DATA| 0 );
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, 0 |DBG_DATA| 0 );
+ ao_dbg_long_delay();
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA| 0 );
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA| 0 );
+ ao_dbg_long_delay();
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, 0 |DBG_DATA|DBG_RESET_N);
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, 0 |DBG_DATA|DBG_RESET_N);
+ ao_dbg_long_delay();
}
void
ao_dbg_reset(void)
{
ao_dbg_set_pins();
}
void
ao_dbg_reset(void)
{
ao_dbg_set_pins();
+ ao_dbg_long_delay();
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA|DBG_RESET_N);
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA|DBG_RESET_N);
+ ao_dbg_long_delay();
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA| 0 );
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA| 0 );
+ ao_dbg_long_delay();
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA| 0 );
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA| 0 );
+ ao_dbg_long_delay();
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA| 0 );
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA| 0 );
+ ao_dbg_long_delay();
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA| 0 );
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA| 0 );
+ ao_dbg_long_delay();
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA|DBG_RESET_N);
ao_dbg_send_bits(DBG_CLOCK|DBG_DATA|DBG_RESET_N, DBG_CLOCK|DBG_DATA|DBG_RESET_N);
+ ao_dbg_long_delay();
}
static void
}
static void