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
|
#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdint.h>
#include <errno.h>
#include <string.h>
#include <sys/ioctl.h>
#include <linux/cp210x.h>
#define log_ioctl(fd,op,arg) do_ioctl(fd,#op,op,arg)
int
do_ioctl (int fd, char *sop, int op, void *arg)
{
int ret;
errno = 0;
ret = ioctl (fd, op, arg);
printf ("ioctl(%d,%s(0x%x),%p)=%d (errno=%d(%s))\n", fd, sop, op, arg, ret,
errno, strerror (errno));
return ret;
}
int
main (int argc, char *argv[])
{
struct cp210x_port_config config;
int fd = open (argv[1], O_RDWR);
memset (&config, 0, sizeof (config));
// config.reset.mode=0xf05f;
config.reset.mode = ~CP_INPUT_PINS;
config.reset.low_power = 0;
config.reset.latch = CP_INPUT_PINS | CP_PIN_GPIO_1 | CP_PIN_GPIO_2;
// config.suspend.mode=0xf05f;
config.suspend.mode = ~CP_INPUT_PINS;
config.suspend.low_power = 0;
config.suspend.latch = CP_INPUT_PINS | CP_PIN_GPIO_1 | CP_PIN_GPIO_2;
// config.enhanced_fxn=0x30;
config.enhanced_fxn = CP_EFXN_ENABLE_WPU;
log_ioctl (fd, CPIOC_PORTCONFSET, &config);
log_ioctl (fd, CPIOC_PORTCONFGET, &config);
printf ("reset=(%x,%x,%x), suspend=(%x,%x,%x), enhanced_fxn=%x\n",
config.reset.mode,
config.reset.low_power,
config.reset.latch,
config.suspend.mode,
config.suspend.low_power,
config.suspend.latch, config.enhanced_fxn);
log_ioctl (fd, CPIOC_DEVICERESET, 0);
}
|
