Fix PDITarget_ReceiveByte() not discarding the start bit properly, and reading in the bits inverted and in the wrong order.

16 years ago · 7aecda6fda
parent 1e3513ed70
commit 7aecda6fda
1 changed files with 6 additions and 4 deletions
--- a/Projects/AVRISP/Lib/PDITarget.c
+++ b/Projects/AVRISP/Lib/PDITarget.c
@ -99,13 +99,15 @@ uint8_t PDITarget_ReceiveByte(void)
 	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;	
 	}