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
|
#include <stdio.h>
#include "m4api.h"
int main (int argc, char **argv) {
float fval;
int ival; /* m4api will handle conversion to 8- or 16-bit integer */
struct m4Diagnostics diag;
struct usb_dev_handle *dev;
char user_buf[64];
printf("This example will set your VIN_MIN_ON to 10 V, and it will\n"
"increase IGN_DBC by 10 ms. OK? Type 'yes' or 'no': ");
if (NULL == fgets(user_buf, sizeof(user_buf), stdin)
|| user_buf[0] != 'y') {
printf("Exiting.\n");
return -1;
}
dev = m4Init();
if (!dev) {
perror("m4Init");
return -1;
}
/* Read in diagnostics */
if (m4GetDiag(dev, &diag))
return -1;
printf("VIN = %0.2f\n", diag.vin);
printf("V33 = %0.2f\n", diag.v33);
/* Get and update a voltage level */
if (m4GetFloat(dev, M4_VIN_MIN_ON, &fval))
return -1;
printf("VIN_MIN_ON was %0.2f", fval);
fval = 10.0;
if (m4SetFloat(dev, M4_VIN_MIN_ON, fval))
return -1;
if (m4GetFloat(dev, M4_VIN_MIN_ON, &fval))
return -1;
printf(", now %0.2f\n", fval);
/* Update an integer */
if (m4GetInteger(dev, M4_IGN_DBC, &ival))
return -1;
printf("IGN_DBC was %d", ival);
ival += 10;
if (m4SetInteger(dev, M4_IGN_DBC, ival))
return -1;
if (m4GetInteger(dev, M4_IGN_DBC, &ival))
return -1;
printf (", now %d\n", ival);
return 0;
}
|
