blob: 529c5dba20bc53ca8d2952b35723b2d03410fa34 (
plain) (
blame)
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
|
/**
* @file printk-support.c
*
* @ingroup tms570
*
* @brief definitions of serial line for debugging.
*/
/*
* Copyright (c) 2014 Premysl Houdek <kom541000@gmail.com>
*
* Google Summer of Code 2014 at
* Czech Technical University in Prague
* Zikova 1903/4
* 166 36 Praha 6
* Czech Republic
*
* Based on LPC24xx and LPC1768 BSP
* by embedded brains GmbH and others
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <rtems/bspIo.h>
#include <rtems/sysinit.h>
#include <stdint.h>
#include <string.h>
#include <bsp/tms570-sci.h>
#include <bsp/tms570-sci-driver.h>
#define TMS570_CONSOLE (&driver_context_table[0])
/**
* @brief Puts chars into peripheral
*
* debug functions always use serial dev 0 peripheral
*
* @retval Void
*/
static void tms570_debug_console_putc(char ch)
{
tms570_sci_context *ctx = TMS570_CONSOLE;
volatile tms570_sci_t *regs = ctx->regs;
rtems_interrupt_level level;
rtems_interrupt_disable(level);
while ( ( regs->FLR & TMS570_SCI_FLR_TXRDY ) == 0) {
rtems_interrupt_flash(level);
}
regs->TD = ch;
while ( ( regs->FLR & TMS570_SCI_FLR_TX_EMPTY ) == 0) {
rtems_interrupt_flash(level);
}
rtems_interrupt_enable(level);
}
/**
* @brief debug console output
*
* debug functions always use serial dev 0 peripheral
*
* @retval Void
*/
static void tms570_debug_console_out(char c)
{
tms570_debug_console_putc(c);
}
static void tms570_debug_console_init(void)
{
tms570_sci_context *ctx = TMS570_CONSOLE;
struct termios term;
tms570_sci_initialize(ctx);
memset(&term, 0, sizeof(term));
term.c_cflag = B115200;
tms570_sci_set_attributes(&ctx->base, &term);
BSP_output_char = tms570_debug_console_out;
}
static void tms570_debug_console_early_init(char c)
{
tms570_debug_console_init();
tms570_debug_console_out(c);
}
/**
* @brief debug console input
*
* debug functions always use serial dev 0 peripheral
*
* @retval x Read char
* @retval -1 No input character available
*/
static int tms570_debug_console_in( void )
{
tms570_sci_context *ctx = TMS570_CONSOLE;
volatile tms570_sci_t *regs = ctx->regs;
rtems_interrupt_level level;
int c;
rtems_interrupt_disable(level);
if ( regs->FLR & TMS570_SCI_FLR_RXRDY ) {
c = (unsigned char) regs->RD;
} else {
c = -1;
}
rtems_interrupt_enable(level);
return c;
}
BSP_output_char_function_type BSP_output_char =
tms570_debug_console_early_init;
BSP_polling_getchar_function_type BSP_poll_char = tms570_debug_console_in;
RTEMS_SYSINIT_ITEM(
tms570_debug_console_init,
RTEMS_SYSINIT_BSP_START,
RTEMS_SYSINIT_ORDER_LAST
);
|