From: Dean Camera <dean@fourwalledcubicle.com>
Date: Sun, 27 Oct 2013 17:15:03 +0000 (+0100)
Subject: Only issue the REPEAT instruction in the clone programmer if needed to reduce protoco... 
X-Git-Tag: LUFA-140302~55
X-Git-Url: http://git.linex4red.de/pub/USBasp.git/commitdiff_plain/cf41d16bc709c31d7ee8af0432256c8c8a3b4469?ds=inline;hp=-c

Only issue the REPEAT instruction in the clone programmer if needed to reduce protocol overhead.
---

cf41d16bc709c31d7ee8af0432256c8c8a3b4469
diff --git a/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c b/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c
index 06a4f7222..43c540e17 100644
--- a/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c
+++ b/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c
@@ -240,9 +240,12 @@ bool XMEGANVM_ReadMemory(const uint32_t ReadAddress,
 	XPROGTarget_SendByte(PDI_CMD_ST | (PDI_POINTER_DIRECT << 2) | PDI_DATSIZE_4BYTES);
 	XMEGANVM_SendAddress(ReadAddress);
 
-	/* Send the REPEAT command with the specified number of bytes to read */
-	XPROGTarget_SendByte(PDI_CMD_REPEAT | PDI_DATSIZE_1BYTE);
-	XPROGTarget_SendByte(ReadSize - 1);
+	if (ReadSize > 1)
+	{
+		/* Send the REPEAT command with the specified number of bytes to read */
+		XPROGTarget_SendByte(PDI_CMD_REPEAT | PDI_DATSIZE_1BYTE);
+		XPROGTarget_SendByte(ReadSize - 1);
+	}
 
 	/* Send a LD command with indirect access and post-increment to read out the bytes */
 	XPROGTarget_SendByte(PDI_CMD_LD | (PDI_POINTER_INDIRECT_PI << 2) | PDI_DATSIZE_1BYTE);