[Openocd-svn] r1524 - trunk/src/jtag

[<oh...@ma...>]

Author: oharboe
Date: 2009-04-24 18:24:55 +0200 (Fri, 24 Apr 2009)
New Revision: 1524

Modified:
   trunk/src/jtag/jlink.c
   trunk/src/jtag/jtag.h
Log:
Zach Welch <zw...@su...> add TAP_SCAN_BYTES macro (1 of 2)

Modified: trunk/src/jtag/jlink.c
===================================================================
--- trunk/src/jtag/jlink.c	2009-04-24 16:14:21 UTC (rev 1523)
+++ trunk/src/jtag/jlink.c	2009-04-24 16:24:55 UTC (rev 1524)
@@ -672,7 +672,7 @@
 		return ERROR_OK;
 
 	// number of full bytes (plus one if some would be left over)
-	byte_length = tap_length / 8 + !!(tap_length % 8);
+	byte_length = TAP_SCAN_BYTES(tap_length);
 
 	usb_out_buffer[0] = EMU_CMD_HW_JTAG3;
 	usb_out_buffer[1] = 0;

Modified: trunk/src/jtag/jtag.h
===================================================================
--- trunk/src/jtag/jtag.h	2009-04-24 16:14:21 UTC (rev 1523)
+++ trunk/src/jtag/jtag.h	2009-04-24 16:24:55 UTC (rev 1524)
@@ -217,6 +217,9 @@
 struct scan_field_s;
 typedef int (*in_handler_t)(u8* in_value, void* priv, struct scan_field_s* field);
 
+/// @brief calculates number of bytes required to hold @a n TAP scan bits
+#define TAP_SCAN_BYTES(n)		(((n) / 8) + !!((n) % 8))
+
 typedef struct scan_field_s
 {
 	jtag_tap_t* tap;                /* tap pointer this instruction refers to */