X-Git-Url: http://developer.intra2net.com/git/?p=libftdi;a=blobdiff_plain;f=examples%2Fsimple.c;h=8abd7b3944a88ebf9a0e5bc9791f3b1872d07295;hp=5568712b99a96484ac381e24b4ec60821015587d;hb=2f6b4bb6a67d7b3a0d4b0ba216637c8bdaac728f;hpb=ad397a4bb9a5c258c8655e30f6856c0103d49a9e

diff --git a/examples/simple.c b/examples/simple.c
index 5568712..8abd7b3 100644
--- a/examples/simple.c
+++ b/examples/simple.c
@@ -1,18 +1,43 @@
+/* simple.c
+
+   Simple libftdi usage example
+
+   This program is distributed under the GPL, version 2
+*/
+
 #include <stdio.h>
 #include <ftdi.h>
 
-int main(int argc, char **argv)
+int main(void)
 {
     int ret;
     struct ftdi_context ftdic;
-    ftdi_init(&ftdic);
+    if (ftdi_init(&ftdic) < 0)
+    {
+        fprintf(stderr, "ftdi_init failed\n");
+        return EXIT_FAILURE;
+    }
 
-    if((ret = ftdi_usb_open(&ftdic, 0x0403, 0x6001)) < 0) {
+    if ((ret = ftdi_usb_open(&ftdic, 0x0403, 0x6001)) < 0)
+    {
         fprintf(stderr, "unable to open ftdi device: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
         return EXIT_FAILURE;
     }
 
-    ftdi_usb_close(&ftdic);
+    // Read out FTDIChip-ID of R type chips
+    if (ftdic.type == TYPE_R)
+    {
+        unsigned int chipid;
+        printf("ftdi_read_chipid: %d\n", ftdi_read_chipid(&ftdic, &chipid));
+        printf("FTDI chipid: %X\n", chipid);
+    }
+
+    if ((ret = ftdi_usb_close(&ftdic)) < 0)
+    {
+        fprintf(stderr, "unable to close ftdi device: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
+        return EXIT_FAILURE;
+    }
+
     ftdi_deinit(&ftdic);
 
     return EXIT_SUCCESS;