6b13f685e
 김민수
BSP 최초 추가
|
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
|
/*
* (C) Copyright 2001
* Erik Theisen, Wave 7 Optics, etheisen@mindspring.com
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <config.h>
#include <command.h>
#include <dtt.h>
#include <i2c.h>
#include <tmu.h>
#if defined CONFIG_DTT_SENSORS
static unsigned long sensor_initialized;
static void _initialize_dtt(void)
{
int i;
unsigned char sensors[] = CONFIG_DTT_SENSORS;
for (i = 0; i < sizeof(sensors); i++) {
if ((sensor_initialized & (1 << i)) == 0) {
if (dtt_init_one(sensors[i]) != 0) {
printf("DTT%d: Failed init!
", i);
continue;
}
sensor_initialized |= (1 << i);
}
}
}
void dtt_init(void)
{
int old_bus;
/* switch to correct I2C bus */
old_bus = I2C_GET_BUS();
I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
_initialize_dtt();
/* switch back to original I2C bus */
I2C_SET_BUS(old_bus);
}
#endif
int dtt_i2c(void)
{
#if defined CONFIG_DTT_SENSORS
int i;
unsigned char sensors[] = CONFIG_DTT_SENSORS;
int old_bus;
/* Force a compilation error, if there are more then 32 sensors */
BUILD_BUG_ON(sizeof(sensors) > 32);
/* switch to correct I2C bus */
#ifdef CONFIG_SYS_I2C
old_bus = i2c_get_bus_num();
i2c_set_bus_num(CONFIG_SYS_DTT_BUS_NUM);
#else
old_bus = I2C_GET_BUS();
I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
#endif
_initialize_dtt();
/*
* Loop through sensors, read
* temperature, and output it.
*/
for (i = 0; i < sizeof(sensors); i++)
printf("DTT%d: %i C
", i + 1, dtt_get_temp(sensors[i]));
/* switch back to original I2C bus */
#ifdef CONFIG_SYS_I2C
i2c_set_bus_num(old_bus);
#else
I2C_SET_BUS(old_bus);
#endif
#endif
return 0;
}
int dtt_tmu(void)
{
#if defined CONFIG_TMU_CMD_DTT
int cur_temp;
/* Sense and return latest thermal info */
if (tmu_monitor(&cur_temp) == TMU_STATUS_INIT) {
puts("TMU is in unknown state, temperature is invalid
");
return -1;
}
printf("Current temperature: %u degrees Celsius
", cur_temp);
#endif
return 0;
}
int do_dtt(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
int err = 0;
err |= dtt_i2c();
err |= dtt_tmu();
return err;
} /* do_dtt() */
/***************************************************/
U_BOOT_CMD(
dtt, 1, 1, do_dtt,
"Read temperature from Digital Thermometer and Thermostat",
""
);
|