1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/* AT91SAM7 debug function implementation for OpenPCD
* (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <lib_AT91SAM7.h>
#include <board.h>
#include <dfu/dbgu.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#define USART_SYS_LEVEL 4
void AT91F_DBGU_Ready(void)
{
while (!(AT91C_BASE_DBGU->DBGU_CSR & AT91C_US_TXEMPTY)) ;
}
static void DBGU_irq_handler(void)
{
static char value;
AT91F_DBGU_Get(&value);
switch (value) {
case '9':
AT91F_DBGU_Printk("Resetting SAM7\n\r");
AT91F_RSTSoftReset(AT91C_BASE_RSTC, AT91C_RSTC_PROCRST|
AT91C_RSTC_PERRST|AT91C_RSTC_EXTRST);
break;
default:
AT91F_DBGU_Printk("\n\r");
}
}
void AT91F_DBGU_Init(void)
{
/* Open PIO for DBGU */
AT91F_DBGU_CfgPIO();
/* Enable Transmitter & receivier */
((AT91PS_USART) AT91C_BASE_DBGU)->US_CR =
AT91C_US_RSTTX | AT91C_US_RSTRX;
/* Configure DBGU */
AT91F_US_Configure(AT91C_BASE_DBGU,
MCK, AT91C_US_ASYNC_MODE,
AT91C_DBGU_BAUD, 0);
/* Enable Transmitter & receivier */
((AT91PS_USART) AT91C_BASE_DBGU)->US_CR =
AT91C_US_RXEN | AT91C_US_TXEN;
/* Enable USART IT error and AT91C_US_ENDRX */
AT91F_US_EnableIt((AT91PS_USART) AT91C_BASE_DBGU, AT91C_US_RXRDY);
/* open interrupt */
AT91F_AIC_ConfigureIt(AT91C_ID_SYS, USART_SYS_LEVEL,
AT91C_AIC_SRCTYPE_INT_HIGH_LEVEL,
DBGU_irq_handler);
AT91F_AIC_EnableIt(AT91C_ID_SYS);
}
void AT91F_DBGU_Printk(char *buffer)
{
while (*buffer != '\0') {
while (!AT91F_US_TxReady((AT91PS_USART) AT91C_BASE_DBGU)) ;
AT91F_US_PutChar((AT91PS_USART) AT91C_BASE_DBGU, *buffer++);
}
}
int AT91F_DBGU_Get(char *val)
{
if ((AT91F_US_RxReady((AT91PS_USART) AT91C_BASE_DBGU)) == 0)
return (0);
else {
*val = AT91F_US_GetChar((AT91PS_USART) AT91C_BASE_DBGU);
return (-1);
}
}
#ifdef DEBUG
void AT91F_DBGU_Frame(char *buffer)
{
unsigned char len;
for (len = 0; buffer[len] != '\0'; len++) { }
AT91F_US_SendFrame((AT91PS_USART) AT91C_BASE_DBGU,
(unsigned char *)buffer, len, 0, 0);
}
const char *
hexdump(const void *data, unsigned int len)
{
static char string[256];
unsigned char *d = (unsigned char *) data;
unsigned int i, left;
string[0] = '\0';
left = sizeof(string);
for (i = 0; len--; i += 3) {
if (i >= sizeof(string) -4)
break;
snprintf(string+i, 4, " %02x", *d++);
}
return string;
}
static char dbg_buf[2048];
void debugp(const char *format, ...)
{
va_list ap;
va_start(ap, format);
vsnprintf(dbg_buf, sizeof(dbg_buf)-1, format, ap);
va_end(ap);
dbg_buf[sizeof(dbg_buf)-1] = '\0';
//AT91F_DBGU_Frame(dbg_buf);
AT91F_DBGU_Printk(dbg_buf);
}
#endif
|
