From 0d2acffaf4d3e3b02dc9745e94b407356650f923 Mon Sep 17 00:00:00 2001
From: Nick Foster <nick@ettus.com>
Date: Fri, 3 Feb 2012 17:36:07 -0800
Subject: B100/B150: firmware disable FIFOs until host enables to keep junk out

---
 firmware/fx2/b100/usrp_main.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

(limited to 'firmware/fx2/b100/usrp_main.c')

diff --git a/firmware/fx2/b100/usrp_main.c b/firmware/fx2/b100/usrp_main.c
index fdc4fce48..436bdeb36 100644
--- a/firmware/fx2/b100/usrp_main.c
+++ b/firmware/fx2/b100/usrp_main.c
@@ -81,6 +81,15 @@ static void initialize_gpif_buffer(int ep) {
   FIFORESET = 0x00; SYNCDELAY;
 }
 
+void enable_xfers(int enable) {
+    if(enable) {
+        IFCONFIG |= bmIFSLAVE;
+    } else {
+        IFCONFIG &= ~bmIFSLAVE;
+    }
+    set_led_0(enable);
+}
+
 /*
  * Handle our "Vendor Extension" commands on endpoint 0.
  * If we handle this one, return non-zero.
@@ -174,6 +183,7 @@ app_vendor_cmd (void)
       break;
       
     case VRQ_ENABLE_GPIF:
+      enable_xfers(wValueL);
       break;
     
     case VRQ_CLEAR_FPGA_FIFO:
@@ -266,13 +276,6 @@ main (void)
   EA = 1;		// global interrupt enable
 
   fx2_renumerate ();	// simulates disconnect / reconnect
-
-//  setup_flowstate_common();
-
-//set up gpif slave mode here
-  //set slave FIFO mode
-  //set synchronous slave mode
-  ////both done in init_usrp()
   
   //set FLAGA, FLAGB, FLAGC, FLAGD to be EP2EF, EP4EF, EP6PF, EP8PF
   PINFLAGSAB = (bmEP2EF) | (bmEP4EF << 4);
-- 
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