X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/eee252603be67c539f9986cde76454f756e55d95..2178cbecb6cff2ee21a25c8dd44dc03f855aedab:/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c?ds=inline

diff --git a/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c b/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
index 672028c06..2a75e4b93 100644
--- a/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
+++ b/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
@@ -1,13 +1,13 @@
 /*
              LUFA Library
-     Copyright (C) Dean Camera, 2012.
+     Copyright (C) Dean Camera, 2018.
 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*
-  Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2018  Dean Camera (dean [at] fourwalledcubicle [dot] com)
 
   Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted
@@ -39,7 +39,7 @@
 #if defined(ENABLE_XPROG_PROTOCOL) || defined(__DOXYGEN__)
 
 /** Flag to indicate if the USART is currently in Tx or Rx mode. */
-bool IsSending;
+static bool IsSending;
 
 /** Enables the target's PDI interface, holding the target in reset until PDI mode is exited. */
 void XPROGTarget_EnableTargetPDI(void)
@@ -50,9 +50,14 @@ void XPROGTarget_EnableTargetPDI(void)
 	DDRD |=  (1 << 5) | (1 << 3);
 	DDRD &= ~(1 << 2);
 
-	/* Set DATA line high for at least 90ns to disable /RESET functionality */
+	/* Set Tx (PDI CLOCK) high, DATA line low for at least 90ns to disable /RESET functionality */
+	PORTD |=  (1 << 5);
+	PORTD &= ~(1 << 3);
+	_delay_us(100);
+
+	/* Set DATA line high (enables PDI interface after 16 PDI CLK cycles) */
 	PORTD |= (1 << 3);
-	_delay_us(1);
+	_delay_us(20);
 
 	/* Set up the synchronous USART for XMEGA communications - 8 data bits, even parity, 2 stop bits */
 	UBRR1  = ((F_CPU / 2 / XPROG_HARDWARE_SPEED) - 1);
@@ -72,7 +77,7 @@ void XPROGTarget_EnableTargetTPI(void)
 	/* Set /RESET line low for at least 400ns to enable TPI functionality */
 	AUX_LINE_DDR  |=  AUX_LINE_MASK;
 	AUX_LINE_PORT &= ~AUX_LINE_MASK;
-	_delay_us(1);
+	_delay_us(100);
 
 	/* Set Tx and XCK as outputs, Rx as input */
 	DDRD |=  (1 << 5) | (1 << 3);