X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/258a6a01777afadbf6913246f12a7106b421b795..7aecda6fda5bcced68d72b0cf73d00174aa5c7cd:/Projects/AVRISP/Lib/PDIProtocol.c

diff --git a/Projects/AVRISP/Lib/PDIProtocol.c b/Projects/AVRISP/Lib/PDIProtocol.c
index 3e16407ce..864d4e9c3 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 +109,8 @@ 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"::);
+	asm volatile ("NOP"::);
 	
 	/* 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++)
@@ -117,7 +118,7 @@ static void PDIProtocol_EnterXPROGMode(void)
 	
 	/* Enable access to the XPROG NVM bus by sending the documented NVM access key to the device */
 	PDITarget_SendByte(PDI_CMD_KEY);	
-	for (uint8_t i = 0; i < 8; i++)
+	for (uint8_t i = 0; i < sizeof(PDI_NVMENABLE_KEY); i++)
 	  PDITarget_SendByte(PDI_NVMENABLE_KEY[i]);
 
 	/* Read out the STATUS register to check that NVM access was successfully enabled */