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-rw-r--r--Projects/AVRISP/Lib/PDITarget.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/Projects/AVRISP/Lib/PDITarget.c b/Projects/AVRISP/Lib/PDITarget.c
index df01497f6..29bb33985 100644
--- a/Projects/AVRISP/Lib/PDITarget.c
+++ b/Projects/AVRISP/Lib/PDITarget.c
@@ -311,14 +311,23 @@ void PDITarget_SendBreak(void)
bool PDITarget_WaitWhileNVMBusBusy(void)
{
TCNT0 = 0;
-
+ TIFR0 = (1 << OCF1A);
+
+ uint8_t TimeoutMS = PDI_NVM_TIMEOUT_MS;
+
/* Poll the STATUS register to check to see if NVM access has been enabled */
- while (TCNT0 < PDI_NVM_TIMEOUT_MS)
+ while (TimeoutMS)
{
/* Send the LDCS command to read the PDI STATUS register to see the NVM bus is active */
PDITarget_SendByte(PDI_CMD_LDCS | PDI_STATUS_REG);
if (PDITarget_ReceiveByte() & PDI_STATUS_NVM)
return true;
+
+ if (TIFR0 & (1 << OCF1A))
+ {
+ TIFR0 = (1 << OCF1A);
+ TimeoutMS--;
+ }
}
return false;