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More fixes to the AVRISP command timeout system so that it should no longer lock up while processing command no matter what the conditions.

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This commit is contained in:
Dean Camera
2010-02-21 06:26:33 +00:00
parent 12a01ed72d
commit e322f14620
8 changed files with 58 additions and 31 deletions
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Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c
+8 -4
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@@ -77,13 +77,15 @@ static void TINYNVM_SendWriteNVMRegister(const uint8_t Address)
bool TINYNVM_WaitWhileNVMBusBusy(void)
{
/* Poll the STATUS register to check to see if NVM access has been enabled */
uint8_t TimeoutMSRemaining = 100;
while (TimeoutMSRemaining)
{
/* Send the SLDCS command to read the TPI STATUS register to see the NVM bus is active */
XPROGTarget_SendByte(TPI_CMD_SLDCS | TPI_STATUS_REG);
if (XPROGTarget_ReceiveByte() & TPI_STATUS_NVM)
return true;
{
TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
return true;
}
/* Manage software timeout */
if (TIFR0 & (1 << OCF0A))
@@ -104,7 +106,6 @@ bool TINYNVM_WaitWhileNVMBusBusy(void)
bool TINYNVM_WaitWhileNVMControllerBusy(void)
{
/* Poll the STATUS register to check to see if NVM access has been enabled */
uint8_t TimeoutMSRemaining = 100;
while (TimeoutMSRemaining)
{
/* Send the SIN command to read the TPI STATUS register to see the NVM bus is busy */
@@ -112,7 +113,10 @@ bool TINYNVM_WaitWhileNVMControllerBusy(void)
/* Check to see if the BUSY flag is still set */
if (!(XPROGTarget_ReceiveByte() & (1 << 7)))
return true;
{
TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
return true;
}
/* Manage software timeout */
if (TIFR0 & (1 << OCF0A))