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Manually pull PDI clock pin high for 1ms before disabling PDI mode in the AVRISP-MKII project, to ensure that the PDI bus is disabled in the target and /RESET functionality restored.

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Dean Camera 2010-01-27 02:59:54 +00:00
parent eb99b1ec90
commit 2059fd8b1a
2 changed files with 8 additions and 1 deletions
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8
Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
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@ -230,6 +230,10 @@ void XPROGTarget_DisableTargetPDI(void)
XPROGTarget_SetRxMode();
#if defined(XPROG_VIA_HARDWARE_USART)
/* Set /RESET high for a one millisecond to ensure target device is restarted */
PORTD |= (1 << 5);
_delay_ms(1);
/* Turn off receiver and transmitter of the USART, clear settings */
UCSR1A |= (1 << TXC1) | (1 << RXC1);
UCSR1B = 0;
@ -239,6 +243,10 @@ void XPROGTarget_DisableTargetPDI(void)
DDRD &= ~((1 << 5) | (1 << 3));
PORTD &= ~((1 << 5) | (1 << 3) | (1 << 2));
#else
/* Set /RESET high for a one millisecond to ensure target device is restarted */
BITBANG_PDICLOCK_PORT |= BITBANG_PDICLOCK_MASK;
_delay_ms(1);
/* Set DATA and CLOCK lines to inputs */
BITBANG_PDIDATA_DDR &= ~BITBANG_PDIDATA_MASK;
BITBANG_PDICLOCK_DDR &= ~BITBANG_PDICLOCK_MASK;