Increase AVRISP-MKII Clone PDI/TPI handshake to 1ms from 1us for targets with high /RESET line capacitance.

LUFA/DoxygenPages/ChangeLog.txt

@@ -17,6 +17,8 @@
   *   - AVRISP-MKII Clone Project PDI/TPI frequency increased from 250KHz to 2MHz as it is now stable
   *   - Fixed incorrect signature bytes returned in the DFU bootloader
   *   - Added new libUSB host Python and NodeJS application examples for the class driver GenericHID demo (thanks to Laszlo Monda)
+  *   - Increased TPI/PDI handshake delay to 1ms from 1us to support targets with high amounts of capacitance on their
+  *     /RESET lines (thanks to Paul Duke)
   *
   *  \section Sec_ChangeLog130901 Version 130901
   *  <b>New:</b>

Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c

@@ -52,7 +52,7 @@ void XPROGTarget_EnableTargetPDI(void)
 
 	/* Set DATA line high for at least 90ns to disable /RESET functionality */
 	PORTD |= (1 << 3);
-	_delay_us(1);
+	_delay_ms(1);
 
 	/* 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 +72,7 @@ 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_ms(1);
 
 	/* Set Tx and XCK as outputs, Rx as input */
 	DDRD |=  (1 << 5) | (1 << 3);