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
|
/*
* Copyright (c) 2012 Travis Geiselbrecht
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdarg.h>
#include <reg.h>
#include <debug.h>
#include <printf.h>
#include <lib/cbuf.h>
#include <kernel/thread.h>
#include <platform/debug.h>
#include <arch/ops.h>
#include <target/debugconfig.h>
#include <arch/arm/cm.h>
#include <uart/uart.h>
#include <pmc/pmc.h>
#include <pio/pio.h>
static cbuf_t debug_rx_buf;
void sam3_uart_irq(void)
{
arm_cm_irq_entry();
bool resched = false;
unsigned char c;
if (uart_read(UART, &c) == 0) {
cbuf_write_char(&debug_rx_buf, c, false);
resched = true;
}
arm_cm_irq_exit(resched);
}
void sam_debug_early_init(void)
{
pmc_enable_periph_clk(ID_UART);
pmc_enable_periph_clk(ID_PIOA);
pio_set_peripheral(PIOA, PIO_PERIPH_A, PIO_PA8);
pio_set_peripheral(PIOA, PIO_PERIPH_A, PIO_PA9);
sam_uart_opt_t opt;
opt.ul_mck = 84000000;
opt.ul_baudrate = 115200;
opt.ul_mode = UART_MR_PAR_NO | UART_MR_CHMODE_NORMAL;
NVIC_DisableIRQ(UART_IRQn);
uart_init(UART, &opt);
uart_enable(UART);
}
void sam_debug_init(void)
{
cbuf_initialize(&debug_rx_buf, 16);
NVIC_EnableIRQ(UART_IRQn);
uart_enable_interrupt(UART, UART_IER_RXRDY);
}
void platform_dputc(char c)
{
if (c == '\n') {
_dputc('\r');
}
while (!uart_is_tx_ready(UART))
;
uart_write(UART, c);
}
int platform_dgetc(char *c, bool wait)
{
return cbuf_read_char(&debug_rx_buf, c, wait);
}
void platform_halt(void)
{
dprintf(ALWAYS, "HALT: spinning forever...\n");
for (;;);
}
|
