Commit | Line | Data |
---|---|---|
8b0b694f | 1 | /* serial_test.c |
d69dbd9e | 2 | |
8b0b694f | 3 | Read/write data via serial I/O |
d69dbd9e JP |
4 | |
5 | This program is distributed under the GPL, version 2 | |
6 | */ | |
7 | ||
8 | #include <stdio.h> | |
579b006f | 9 | #include <stdlib.h> |
d69dbd9e JP |
10 | #include <unistd.h> |
11 | #include <getopt.h> | |
8b0b694f | 12 | #include <signal.h> |
d69dbd9e JP |
13 | #include <ftdi.h> |
14 | ||
8b0b694f UB |
15 | static int exitRequested = 0; |
16 | /* | |
17 | * sigintHandler -- | |
18 | * | |
19 | * SIGINT handler, so we can gracefully exit when the user hits ctrl-C. | |
20 | */ | |
21 | static void | |
22 | sigintHandler(int signum) | |
23 | { | |
24 | exitRequested = 1; | |
25 | } | |
26 | ||
d69dbd9e JP |
27 | int main(int argc, char **argv) |
28 | { | |
8b0b694f | 29 | struct ftdi_context *ftdi; |
97c6b5f6 | 30 | unsigned char buf[1024]; |
b9c1e317 | 31 | int f = 0, i; |
2e9cc5be | 32 | int vid = 0x403; |
8b0b694f | 33 | int pid = 0; |
d69dbd9e JP |
34 | int baudrate = 115200; |
35 | int interface = INTERFACE_ANY; | |
8b0b694f | 36 | int do_write = 0; |
53a561d3 | 37 | unsigned int pattern = 0xffff; |
8b0b694f | 38 | int retval = EXIT_FAILURE; |
d69dbd9e | 39 | |
8b0b694f | 40 | while ((i = getopt(argc, argv, "i:v:p:b:w::")) != -1) |
d69dbd9e JP |
41 | { |
42 | switch (i) | |
43 | { | |
05c2e40a TJ |
44 | case 'i': // 0=ANY, 1=A, 2=B, 3=C, 4=D |
45 | interface = strtoul(optarg, NULL, 0); | |
46 | break; | |
47 | case 'v': | |
48 | vid = strtoul(optarg, NULL, 0); | |
49 | break; | |
50 | case 'p': | |
51 | pid = strtoul(optarg, NULL, 0); | |
52 | break; | |
53 | case 'b': | |
54 | baudrate = strtoul(optarg, NULL, 0); | |
55 | break; | |
8b0b694f UB |
56 | case 'w': |
57 | do_write = 1; | |
53a561d3 UB |
58 | if (optarg) |
59 | pattern = strtoul(optarg, NULL, 0); | |
8b0b694f | 60 | if (pattern > 0xff) |
53a561d3 | 61 | { |
8b0b694f | 62 | fprintf(stderr, "Please provide a 8 bit pattern\n"); |
53a561d3 UB |
63 | exit(-1); |
64 | } | |
8b0b694f | 65 | break; |
05c2e40a | 66 | default: |
8b0b694f | 67 | fprintf(stderr, "usage: %s [-i interface] [-v vid] [-p pid] [-b baudrate] [-w [pattern]]\n", *argv); |
05c2e40a | 68 | exit(-1); |
d69dbd9e JP |
69 | } |
70 | } | |
71 | ||
72 | // Init | |
8b0b694f | 73 | if ((ftdi = ftdi_new()) == 0) |
d69dbd9e | 74 | { |
8b0b694f | 75 | fprintf(stderr, "ftdi_new failed\n"); |
d69dbd9e JP |
76 | return EXIT_FAILURE; |
77 | } | |
78 | ||
8b0b694f UB |
79 | if (!vid && !pid && (interface == INTERFACE_ANY)) |
80 | { | |
81 | ftdi_set_interface(ftdi, INTERFACE_ANY); | |
82 | struct ftdi_device_list *devlist; | |
83 | int res; | |
84 | if ((res = ftdi_usb_find_all(ftdi, &devlist, 0, 0)) < 0) | |
85 | { | |
86 | fprintf(stderr, "No FTDI with default VID/PID found\n"); | |
87 | goto do_deinit; | |
88 | } | |
89 | if (res == 1) | |
90 | { | |
91 | f = ftdi_usb_open_dev(ftdi, devlist[0].dev); | |
92 | if (f<0) | |
93 | { | |
94 | fprintf(stderr, "Unable to open device %d: (%s)", | |
95 | i, ftdi_get_error_string(ftdi)); | |
96 | } | |
97 | } | |
98 | ftdi_list_free(&devlist); | |
99 | if (res > 1) | |
100 | { | |
101 | fprintf(stderr, "%d Devices found, please select Device with VID/PID\n", res); | |
102 | /* TODO: List Devices*/ | |
103 | goto do_deinit; | |
104 | } | |
105 | if (res == 0) | |
106 | { | |
107 | fprintf(stderr, "No Devices found with default VID/PID\n"); | |
108 | goto do_deinit; | |
109 | } | |
110 | } | |
111 | else | |
112 | { | |
113 | // Select interface | |
114 | ftdi_set_interface(ftdi, interface); | |
115 | ||
116 | // Open device | |
117 | f = ftdi_usb_open(ftdi, vid, pid); | |
118 | } | |
d69dbd9e JP |
119 | if (f < 0) |
120 | { | |
8b0b694f | 121 | fprintf(stderr, "unable to open ftdi device: %d (%s)\n", f, ftdi_get_error_string(ftdi)); |
d69dbd9e JP |
122 | exit(-1); |
123 | } | |
124 | ||
125 | // Set baudrate | |
8b0b694f | 126 | f = ftdi_set_baudrate(ftdi, baudrate); |
d69dbd9e JP |
127 | if (f < 0) |
128 | { | |
8b0b694f | 129 | fprintf(stderr, "unable to set baudrate: %d (%s)\n", f, ftdi_get_error_string(ftdi)); |
d69dbd9e JP |
130 | exit(-1); |
131 | } | |
8b0b694f | 132 | |
4f95e48a UB |
133 | /* Set line parameters |
134 | * | |
135 | * TODO: Make these parameters settable from the command line | |
136 | * | |
db9c7eba | 137 | * Parameters are chosen that sending a continuous stream of 0x55 |
4f95e48a UB |
138 | * should give a square wave |
139 | * | |
140 | */ | |
141 | f = ftdi_set_line_property(ftdi, 8, STOP_BIT_1, NONE); | |
142 | if (f < 0) | |
143 | { | |
144 | fprintf(stderr, "unable to set line parameters: %d (%s)\n", f, ftdi_get_error_string(ftdi)); | |
145 | exit(-1); | |
146 | } | |
147 | ||
8b0b694f UB |
148 | if (do_write) |
149 | for(i=0; i<1024; i++) | |
150 | buf[i] = pattern; | |
d69dbd9e | 151 | |
8b0b694f UB |
152 | signal(SIGINT, sigintHandler); |
153 | while (!exitRequested) | |
05c2e40a | 154 | { |
8b0b694f | 155 | if (do_write) |
275e7cae UB |
156 | f = ftdi_write_data(ftdi, buf, |
157 | (baudrate/512 >sizeof(buf))?sizeof(buf): | |
158 | (baudrate/512)?baudrate/512:1); | |
8b0b694f UB |
159 | else |
160 | f = ftdi_read_data(ftdi, buf, sizeof(buf)); | |
161 | if (f<0) | |
8ace1862 | 162 | usleep(1 * 1000000); |
8b0b694f UB |
163 | else if(f> 0 && !do_write) |
164 | { | |
165 | fprintf(stderr, "read %d bytes\n", f); | |
166 | fwrite(buf, f, 1, stdout); | |
167 | fflush(stderr); | |
168 | fflush(stdout); | |
169 | } | |
d69dbd9e | 170 | } |
8b0b694f UB |
171 | signal(SIGINT, SIG_DFL); |
172 | retval = EXIT_SUCCESS; | |
173 | ||
174 | ftdi_usb_close(ftdi); | |
175 | do_deinit: | |
176 | ftdi_free(ftdi); | |
d69dbd9e | 177 | |
8b0b694f | 178 | return retval; |
d69dbd9e | 179 | } |