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authorDean Camera <dean@fourwalledcubicle.com>2010-01-27 02:59:54 +0000
committerDean Camera <dean@fourwalledcubicle.com>2010-01-27 02:59:54 +0000
commit2059fd8b1a4c79f37811bb27fa568a97c56936a4 (patch)
tree87549877a9afec75d2d771cb26b687fa826a340f /Projects
parenteb99b1ec905266ea4c076542168fb0e3b81b77a3 (diff)
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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.
Diffstat (limited to 'Projects')
-rw-r--r--Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c b/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
index 01c861fb6..05d5ec9a4 100644
--- a/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
+++ b/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
@@ -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;