libftdi: (tomj) polished documentation, started "examples" dir

[libftdi] / examples / bitbang_ft2232.c

diff --git a/examples/bitbang_ft2232.c b/examples/bitbang_ft2232.c
new file mode 100644 (file)
index 0000000..17b6472
--- /dev/null
+++ b/examples/bitbang_ft2232.c
@@ -0,0 +1,87 @@
+/* This program is distributed under the GPL, version 2 */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <ftdi.h>
+
+int main(int argc, char **argv)
+{
+    struct ftdi_context ftdic,ftdic2;
+    int f,i;
+
+    ftdi_init(&ftdic);
+
+    f = ftdi_usb_open(&ftdic, 0x0403, 0x6001);
+
+    if(f < 0 && f != -5) {
+        fprintf(stderr, "unable to open ftdi device: %d (%s)\n", f, ftdi_get_error_string(&ftdic));
+        exit(-1);
+    }
+
+    printf("ftdi open succeeded: %d\n",f);
+
+    printf("enabling bitbang mode\n");
+    ftdi_enable_bitbang(&ftdic, 0xFF);
+
+    ftdic2.interface=1;
+    ftdic2.index=1;
+    ftdic2.out_ep=0x83;
+    ftdic2.in_ep=0x4;
+
+    f = ftdi_usb_open(&ftdic2, 0x0403, 0x6001);
+
+    if(f < 0 && f != -5) {
+        fprintf(stderr, "unable to open ftdi device: %d (%s)\n", f, ftdi_get_error_string(&ftdic));
+        exit(-1);
+    }
+
+    printf("ftdi open succeeded: %d\n",f);
+
+    printf("enabling bitbang mode\n");
+    ftdi_enable_bitbang(&ftdic2, 0xFF);
+
+
+    char buf[1];
+
+    sleep(3);
+
+    buf[0] = 0x0;
+    printf("turning everything on\n");
+    f = ftdi_write_data(&ftdic, buf, 1);
+    if(f < 0) {
+        fprintf(stderr,"write failed for 0x%x, error %d (%s)\n", buf[0], f, ftdi_get_error_string(&ftdic));
+    }
+
+    sleep(3);
+
+    buf[0] = 0xFF;
+    printf("turning everything off\n");
+    f = ftdi_write_data(&ftdic, buf, 1);
+    if(f < 0) {
+        fprintf(stderr,"write failed for 0x%x, error %d (%s)\n", buf[0], f, ftdi_get_error_string(&ftdic));
+    }
+
+    sleep(3);
+
+    for(i = 0; i < 32; i++) {
+        buf[0] =  0 | (0xFF ^ 1 << (i % 8));
+        if( i > 0 && (i % 8) == 0) {
+            printf("\n");
+        }
+        printf("%02hhx ",buf[0]);
+        fflush(stdout);
+        f = ftdi_write_data(&ftdic, buf, 1);
+        if(f < 0) {
+            fprintf(stderr,"write failed for 0x%x, error %d (%s)\n", buf[0], f, ftdi_get_error_string(&ftdic));
+        }
+        sleep(1);
+    }
+
+    printf("\n");
+
+    printf("disabling bitbang mode\n");
+    ftdi_disable_bitbang(&ftdic);
+
+    ftdi_usb_close(&ftdic);
+    ftdi_deinit(&ftdic);
+}