Renamed examples/sio to examples/serial_read

[libftdi] / examples / serial_read.c

diff --git a/examples/serial_read.c b/examples/serial_read.c
new file mode 100644 (file)
index 0000000..754ca4a
--- /dev/null
+++ b/examples/serial_read.c
@@ -0,0 +1,81 @@
+/* serial_read.c
+
+   Read data via serial I/O
+
+   This program is distributed under the GPL, version 2
+*/
+
+#include <stdio.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <ftdi.h>
+
+int main(int argc, char **argv)
+{
+    struct ftdi_context ftdic;
+    char buf[1024];
+    int f, i;
+    int vid = 0x0403;
+    int pid = 0x6001;
+    int baudrate = 115200;
+    int interface = INTERFACE_ANY;
+
+    while ((i = getopt(argc, argv, "i:v:p:b:")) != -1)
+    {
+        switch (i)
+        {
+       case 'i': // 0=ANY, 1=A, 2=B, 3=C, 4=D
+               interface = strtoul(optarg, NULL, 0);
+               break;
+       case 'v':
+               vid = strtoul(optarg, NULL, 0);
+               break;
+       case 'p':
+               pid = strtoul(optarg, NULL, 0);
+               break;
+       case 'b':
+               baudrate = strtoul(optarg, NULL, 0);
+               break;
+       default:
+               fprintf(stderr, "usage: %s [-i interface] [-v vid] [-p pid] [-b baudrate]\n", *argv);
+               exit(-1);
+        }
+    }
+
+    // Init
+    if (ftdi_init(&ftdic) < 0)
+    {
+        fprintf(stderr, "ftdi_init failed\n");
+        return EXIT_FAILURE;
+    }
+
+    // Select first interface
+    ftdi_set_interface(&ftdic, interface);
+
+    // Open device
+    f = ftdi_usb_open(&ftdic, vid, pid);
+    if (f < 0)
+    {
+        fprintf(stderr, "unable to open ftdi device: %d (%s)\n", f, ftdi_get_error_string(&ftdic));
+        exit(-1);
+    }
+
+    // Set baudrate
+    f = ftdi_set_baudrate(&ftdic, 115200);
+    if (f < 0)
+    {
+        fprintf(stderr, "unable to set baudrate: %d (%s)\n", f, ftdi_get_error_string(&ftdic));
+        exit(-1);
+    }
+
+    // Read data forever
+    while ((f = ftdi_read_data(&ftdic, buf, sizeof(buf))) >= 0) {
+           fprintf(stderr, "read %d bytes\n", f);
+           fwrite(buf, f, 1, stdout);
+           fflush(stderr);
+           fflush(stdout);
+    }
+
+    ftdi_usb_close(&ftdic);
+    ftdi_deinit(&ftdic);
+}