From 7aecda6fda5bcced68d72b0cf73d00174aa5c7cd Mon Sep 17 00:00:00 2001
From: Dean Camera <dean@fourwalledcubicle.com>
Date: Thu, 10 Dec 2009 00:54:08 +0000
Subject: [PATCH] Fix PDITarget_ReceiveByte() not discarding the start bit
properly, and reading in the bits inverted and in the wrong order.
---
Projects/AVRISP/Lib/PDITarget.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/Projects/AVRISP/Lib/PDITarget.c b/Projects/AVRISP/Lib/PDITarget.c
index 7b35a33360..a0bbf7dfa1 100644
--- a/Projects/AVRISP/Lib/PDITarget.c
+++ b/Projects/AVRISP/Lib/PDITarget.c
@@ -98,14 +98,16 @@ uint8_t PDITarget_ReceiveByte(void)
// One Start Bit
while (PDIDATA_LINE_PIN & PDIDATA_LINE_MASK);
TOGGLE_PDI_CLOCK;
-
+
+ TOGGLE_PDI_CLOCK;
+
// Eight Data Bits
for (uint8_t i = 0; i < 8; i++)
{
- if (PDIDATA_LINE_PIN & PDIDATA_LINE_MASK)
- ReceivedByte |= 0x01;
+ if (!(PDIDATA_LINE_PIN & PDIDATA_LINE_MASK))
+ ReceivedByte |= 0x80;
- ReceivedByte <<= 1;
+ ReceivedByte >>= 1;
TOGGLE_PDI_CLOCK;
}