Explain the index/value format baudrate setting

[libftdi] / src / ftdi_stream.c

diff --git a/src/ftdi_stream.c b/src/ftdi_stream.c
index c3eb465..b949999 100644 (file)
--- a/src/ftdi_stream.c
+++ b/src/ftdi_stream.c
@@ -152,8 +152,28 @@ ftdi_readstream(struct ftdi_context *ftdi,
     int bufferSize = packetsPerTransfer * ftdi->max_packet_size;
     int xferIndex;
     int err = 0;
+
+    /* Only FT2232H and FT232H know about the synchronous FIFO Mode*/
+    if ((ftdi->type != TYPE_2232H) && (ftdi->type != TYPE_232H))
+    {
+        fprintf(stderr,"Device doesn't support synchronous FIFO mode\n");
+        return 1;
+    }
     
-    fprintf(stderr, "ftdi_readstream\n");
+    /* We don't know in what state we are, switch to reset*/
+    if (ftdi_set_bitmode(ftdi,  0xff, BITMODE_RESET) < 0)
+    {
+        fprintf(stderr,"Can't reset mode\n");
+        return 1;
+    }
+    
+    /* Purge anything remaining in the buffers*/
+    if (ftdi_usb_purge_buffers(ftdi) < 0)
+    {
+        fprintf(stderr,"Can't Purge\n");
+        return 1;
+    }
+
     /*
      * Set up all transfers
      */
@@ -198,7 +218,7 @@ ftdi_readstream(struct ftdi_context *ftdi,
      */
     if (ftdi_set_bitmode(ftdi,  0xff, BITMODE_SYNCFF) < 0)
     {
-        fprintf(stderr,"Can't set synchronous fifo mode\n",
+        fprintf(stderr,"Can't set synchronous fifo mode: %s\n",
                 ftdi_get_error_string(ftdi));
         goto cleanup;
     }