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

This commit is contained in:
Dean Camera 2013-11-04 17:09:21 +01:00
parent 4b6049bb59
commit 16c4f1d43c
2 changed files with 4 additions and 2 deletions
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2
LUFA/DoxygenPages/ChangeLog.txt
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@ -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>

4
Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
View File

@ -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);