Added hello-ftdi.c

software/hello-ftdi.c

@@ -0,0 +1,41 @@
+/* hello-ftdi.c: flash LED connected between CTS and GND.
+   This example uses the libftdi API.
+   Minimal error checking; written for brevity, not durability. */
+
+#include <stdio.h>
+#include <ftdi.h>
+
+#define LED 0x08  /* CTS (brown wire on FTDI cable) */
+
+int main()
+{
+    unsigned char c = 0;
+    struct ftdi_context ftdic;
+
+    /* Initialize context for subsequent function calls */
+    ftdi_init(&ftdic);
+
+    /* Open FTDI device based on FT232R vendor & product IDs */
+    if(ftdi_usb_open(&ftdic, 0x0403, 0x6015) < 0) {
+        puts("Can't open device");
+        return 1;
+    }
+
+    /* Enable bitbang mode with a single output line */
+    //ftdi_enable_bitbang(&ftdic, LED); -- obsolete
+    int rc = ftdi_set_bitmode(&ftdic, 0xff, BITMODE_BITBANG);
+    if(rc == -1) {
+        puts("Can't enable bit-bang mode\n");
+        return -1;
+    } else if(rc == -2) {
+        puts("USB device unavailable\n");
+        return -1;
+    }
+
+    /* Endless loop: invert LED state, write output, pause 1 second */
+    for(;;) {
+        c = ~c;
+        ftdi_write_data(&ftdic, &c, 1);
+        sleep(1);
+    }
+}