From 428f6220f2ed679f658e077d8c30cc29958e1f26 Mon Sep 17 00:00:00 2001
From: hackbard <hackbard@hackdaworld.org>
Date: Tue, 4 Sep 2007 22:17:03 +0200
Subject: [PATCH] somehow dirty still accurate fix

---
 fx2/cypress_fx2_xilprg.patch | 33 +++++++++++++++++++--------------
 fx2/fx2.c                    | 20 ++++++++------------
 2 files changed, 27 insertions(+), 26 deletions(-)

diff --git a/fx2/cypress_fx2_xilprg.patch b/fx2/cypress_fx2_xilprg.patch
index 8aa0971..23984e0 100644
--- a/fx2/cypress_fx2_xilprg.patch
+++ b/fx2/cypress_fx2_xilprg.patch
@@ -1,6 +1,6 @@
-diff -Nur xilprg-0.5/makefile xilprg-new/makefile
+diff -Nur xilprg-0.5/makefile xilprg-patched/makefile
 --- xilprg-0.5/makefile	2006-08-23 07:41:20.000000000 +0200
-+++ xilprg-new/makefile	2007-04-07 17:09:16.000000000 +0200
++++ xilprg-patched/makefile	2007-09-04 20:59:03.000000000 +0200
 @@ -40,6 +40,7 @@
  	$(SRC_DIR)/prgfile.cpp \
  	$(SRC_DIR)/chip.cpp \
@@ -9,9 +9,9 @@ diff -Nur xilprg-0.5/makefile xilprg-new/makefile
  	$(SRC_DIR)/cable.cpp \
  	$(SRC_DIR)/digilent.cpp \
  	$(SRC_DIR)/xilinx.cpp
-diff -Nur xilprg-0.5/src/cable.cpp xilprg-new/src/cable.cpp
+diff -Nur xilprg-0.5/src/cable.cpp xilprg-patched/src/cable.cpp
 --- xilprg-0.5/src/cable.cpp	2006-08-23 07:38:34.000000000 +0200
-+++ xilprg-new/src/cable.cpp	2007-04-07 17:20:55.000000000 +0200
++++ xilprg-patched/src/cable.cpp	2007-09-04 20:59:03.000000000 +0200
 @@ -49,6 +49,7 @@
  #include "chip.h"
  #include "cmdline.h"
@@ -30,10 +30,10 @@ diff -Nur xilprg-0.5/src/cable.cpp xilprg-new/src/cable.cpp
      {
          msgf(STR_INVALID_CABLE_DEF);
          return NULL;
-diff -Nur xilprg-0.5/src/onbusb.cpp xilprg-new/src/onbusb.cpp
+diff -Nur xilprg-0.5/src/onbusb.cpp xilprg-patched/src/onbusb.cpp
 --- xilprg-0.5/src/onbusb.cpp	1970-01-01 01:00:00.000000000 +0100
-+++ xilprg-new/src/onbusb.cpp	2007-09-04 21:39:30.000000000 +0200
-@@ -0,0 +1,119 @@
++++ xilprg-patched/src/onbusb.cpp	2007-09-04 22:12:47.000000000 +0200
+@@ -0,0 +1,124 @@
 +/*
 + * onboard usb
 + *
@@ -145,17 +145,22 @@ diff -Nur xilprg-0.5/src/onbusb.cpp xilprg-new/src/onbusb.cpp
 +
 +int onbusb::get_tdo()
 +{
++int i;
 +    /* send get tdo command */
-+    data=GET_TDO;
-+    usb_bulk_write(handle,0x01,&data,1,0);
-+
++    //data=GET_TDO;
++    //usb_bulk_write(handle,0x01,&data,1,0);
 +    /* receive tdo */
++    // dirty! 1 dummy read is enough. my guess:
++    //  - either we have to wait that time for correct state at tdi
++    //  - or/and it's due to the EP1INBUF=1 (buf size?) todo: ez-usb doc!
++    //  - initial wrong states don't harm
++    for(i=0;i<1;i++) usb_bulk_read(handle,0x81,&data,1,1);
 +    usb_bulk_read(handle,0x81,&data,1,0);
 +    return data & 0x01 ? 1 : 0;
 +}
-diff -Nur xilprg-0.5/src/onbusb.h xilprg-new/src/onbusb.h
+diff -Nur xilprg-0.5/src/onbusb.h xilprg-patched/src/onbusb.h
 --- xilprg-0.5/src/onbusb.h	1970-01-01 01:00:00.000000000 +0100
-+++ xilprg-new/src/onbusb.h	2007-09-04 21:17:18.000000000 +0200
++++ xilprg-patched/src/onbusb.h	2007-09-04 20:59:03.000000000 +0200
 @@ -0,0 +1,43 @@
 +/*
 + * onboard usb
@@ -200,9 +205,9 @@ diff -Nur xilprg-0.5/src/onbusb.h xilprg-new/src/onbusb.h
 +};
 +
 +#endif
-diff -Nur xilprg-0.5/src/strtable.cpp xilprg-new/src/strtable.cpp
+diff -Nur xilprg-0.5/src/strtable.cpp xilprg-patched/src/strtable.cpp
 --- xilprg-0.5/src/strtable.cpp	2006-08-23 07:38:34.000000000 +0200
-+++ xilprg-new/src/strtable.cpp	2007-04-07 16:56:25.000000000 +0200
++++ xilprg-patched/src/strtable.cpp	2007-09-04 20:59:03.000000000 +0200
 @@ -137,7 +137,7 @@
      //STR_CMD_CABLE
      "cable\0" 
diff --git a/fx2/fx2.c b/fx2/fx2.c
index a8f0467..49f0da5 100644
--- a/fx2/fx2.c
+++ b/fx2/fx2.c
@@ -252,21 +252,17 @@ void main() {
 	fx2_init();
 
 	/* jtag by polling ep1 */
+
 	while(1) {
 		if(!(EP1OUTCS&BUSY)) {
+			set=IOD;
 			buf=EP1OUTBUF[0];
-			if(buf!=GET_TDO) {
-				set=(IOD&(~0x1c))|(buf&0x1c);
-				IOD=set;
-				EP1OUTBC=1;
-			}
-			else {
-				while(EP1INCS&BUSY)
-					continue;
-				buf=IOD&0x01?1:0;
-				EP1INBUF[0]=buf;
-				EP1INBC=1;
-			}
+			IOD=(IOD&(~0x1c))|(buf&0x1c);
+			EP1OUTBC=1;
+		}
+		if(!(EP1INCS&BUSY)) {
+			EP1INBUF[0]=IOD&0x01;
+			EP1INBC=1;
 		}
 	}
 
-- 
2.20.1