From e322f14620a1064efc4b3a98cf701efc48da81cc Mon Sep 17 00:00:00 2001
From: Dean Camera <dean@fourwalledcubicle.com>
Date: Sun, 21 Feb 2010 06:26:33 +0000
Subject: More fixes to the AVRISP command timeout system so that it should no
 longer lock up while processing command no matter what the conditions.

---
 Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

(limited to 'Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.c')

diff --git a/Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.c b/Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.c
index e0eb44107..85b31fbdb 100644
--- a/Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.c
+++ b/Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.c
@@ -75,7 +75,7 @@ void ISPProtocol_EnterISPMode(void)
 
 	/* Continuously attempt to synchronize with the target until either the number of attempts specified
 	 * by the host has exceeded, or the the device sends back the expected response values */
-	while (Enter_ISP_Params.SynchLoops-- && (ResponseStatus == STATUS_CMD_FAILED))
+	while (Enter_ISP_Params.SynchLoops-- && (ResponseStatus == STATUS_CMD_FAILED) && TimeoutMSRemaining)
 	{
 		uint8_t ResponseBytes[4];
 
@@ -518,4 +518,19 @@ void ISPProtocol_SPIMulti(void)
 	}
 }
 
+/** Blocking delay for a given number of milliseconds.
+ *
+ *  \param[in] DelayMS  Number of milliseconds to delay for
+ */
+void ISPProtocol_DelayMS(uint8_t DelayMS)
+{
+	while (DelayMS-- && TimeoutMSRemaining)
+	{
+		if (TimeoutMSRemaining)
+		  TimeoutMSRemaining--;
+		  
+		_delay_ms(1);
+	}
+}
+
 #endif
\ No newline at end of file
-- 
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