Import fx2lib into fx2lafw directly.

[sigrok-firmware-fx2lafw.git] / fx2lib / lib / eputils.c

diff --git a/fx2lib/lib/eputils.c b/fx2lib/lib/eputils.c
new file mode 100644 (file)
index 0000000..e459aee
--- /dev/null
+++ b/fx2lib/lib/eputils.c
@@ -0,0 +1,60 @@
+/**
+ * Copyright (C) 2009 Ubixum, Inc. 
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ **/
+
+
+
+
+#include <eputils.h>
+
+#include <fx2regs.h>
+
+#ifdef DEBUG_EPUTILS
+#include <stdio.h>
+#else
+#define printf(...)
+#endif
+
+void readep0( BYTE* dst, WORD len) {
+    WORD read = 0; // n bytes read
+    BYTE c,avail;
+    while (read < len) {
+        EP0BCH = 0;
+        // NOTE need syncdelay?
+        EP0BCL = 0; // re-arm ep so host can send more
+        while (EP0CS & bmEPBUSY);
+        avail = EP0BCL; // max size fits in one byte (64 bytes)
+        for (c=0;c<avail;++c)
+            dst[read+c] = EP0BUF[c];
+        read += avail;
+    }
+}
+
+
+void writeep0( BYTE* src, WORD len) {
+    WORD written = 0;
+    BYTE c;
+    while ( written < len ) {
+        while ( EP0CS & bmEPBUSY ); // wait
+        for (c=0;c<64 && written<len;++c ) {
+            EP0BUF[c] = src[written++];
+        }
+        EP0BCH = 0;
+        EP0BCL= c;
+        printf ( "Write %d bytes\n", c );
+    }
+}