Commit 2b74b517 authored by Dean Camera's avatar Dean Camera
Browse files

Don't enable the pullup on the target /RESET line in the AVRISP project for...

Don't enable the pullup on the target /RESET line in the AVRISP project for PDI mode - clearing the XMEGA's reset control register twice is enough to release it from reset. Possible silicon bug, since the official Atmel programmers have the same issue.
parent 39d56aef
......@@ -27,7 +27,7 @@
* - Fixed ADC routines failing to read the extended channels (Channels 8 to 13, Internal Temperature Sensor) on the
* U4 series USB AVR parts
* - Fixed PDI programming mode in the AVRISP programmer project not exiting programming mode correctly (clear target
* Reset key twice, set /RESET pin to pullup)
* Reset key twice, possible silicon bug?)
*
* \section Sec_ChangeLog100219 Version 100219
*
......
......@@ -237,19 +237,18 @@ void XPROGTarget_DisableTargetPDI(void)
UCSR1B = 0;
UCSR1C = 0;
/* Make Reset input with pullup to take target out of /RESET, tristate all other pins */
/* Tristate all pins */
DDRD &= ~((1 << 5) | (1 << 3));
PORTD &= ~((1 << 3) | (1 << 2));
PORTD |= (1 << 5);
#else
/* Turn off software USART management timer */
TCCR1B = 0;
/* Make Reset input with pullup to take target out of /RESET, tristate all other pins */
/* Tristate all pins */
BITBANG_PDIDATA_DDR &= ~BITBANG_PDIDATA_MASK;
BITBANG_PDICLOCK_DDR &= ~BITBANG_PDICLOCK_MASK;
BITBANG_PDICLOCK_PORT &= ~BITBANG_PDICLOCK_MASK;
BITBANG_PDIDATA_PORT |= BITBANG_PDIDATA_MASK;
BITBANG_PDIDATA_PORT &= ~BITBANG_PDIDATA_MASK;
#endif
}
......
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