X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/258a6a01777afadbf6913246f12a7106b421b795..e4cfd5208fdb51942ad8857dd5e1d96f5216f73b:/Projects/AVRISP/Lib/PDIProtocol.c

diff --git a/Projects/AVRISP/Lib/PDIProtocol.c b/Projects/AVRISP/Lib/PDIProtocol.c
index 3e16407ce..d98c51c43 100644
--- a/Projects/AVRISP/Lib/PDIProtocol.c
+++ b/Projects/AVRISP/Lib/PDIProtocol.c
@@ -28,7 +28,7 @@
   this software.
 */
 
-#if defined(ENABLE_PDI_PROTOCOL)
+#if defined(ENABLE_PDI_PROTOCOL) || defined(__DOXYGEN__)
 
 #warning PDI Programming Protocol support is incomplete and not currently suitable for use.
 
@@ -109,7 +109,10 @@ static void PDIProtocol_EnterXPROGMode(void)
 	
 	/* Must hold DATA line high for at least 90nS to enable PDI interface */
 	PDIDATA_LINE_PORT |= PDIDATA_LINE_MASK;
-	_delay_us(1);
+	asm volatile ("NOP"::);
+	#if (F_CPU > 8000000)
+	asm volatile ("NOP"::);
+	#endif
 	
 	/* Toggle CLOCK line 16 times within 100uS of the original 90nS timeout to keep PDI interface enabled */
 	for (uint8_t i = 0; i < 16; i++)