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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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17
Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.c
View file

@ -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

13
Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.h
View file

@ -66,17 +66,6 @@
#define PROG_MODE_PAGED_READYBUSY_MASK (1 << 6)
#define PROG_MODE_COMMIT_PAGE_MASK (1 << 7)
/* Inline Functions: */
/** Blocking delay for a given number of milliseconds.
*
* \param[in] DelayMS Number of milliseconds to delay for
*/
static inline void ISPProtocol_DelayMS(uint8_t DelayMS)
{
while (DelayMS--)
_delay_ms(1);
}
/* Function Prototypes: */
void ISPProtocol_EnterISPMode(void);
void ISPProtocol_LeaveISPMode(void);
@ -86,5 +75,5 @@
void ISPProtocol_ReadFuseLockSigOSCCAL(const uint8_t V2Command);
void ISPProtocol_WriteFuseLock(const uint8_t V2Command);
void ISPProtocol_SPIMulti(void);
void ISPProtocol_DelayMS(uint8_t DelayMS);
#endif

16
Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c
View file

@ -112,7 +112,6 @@ uint8_t ISPTarget_WaitForProgComplete(const uint8_t ProgrammingMode, const uint1
const uint8_t DelayMS, const uint8_t ReadMemCommand)
{
uint8_t ProgrammingStatus = STATUS_CMD_OK;
uint8_t TimeoutMSRemaining = 100;
/* Determine method of Programming Complete check */
switch (ProgrammingMode & ~(PROG_MODE_PAGED_WRITES_MASK | PROG_MODE_COMMIT_PAGE_MASK))
@ -148,6 +147,9 @@ uint8_t ISPTarget_WaitForProgComplete(const uint8_t ProgrammingMode, const uint1
break;
}
if (ProgrammingStatus == STATUS_CMD_OK)
TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
return ProgrammingStatus;
}
@ -158,8 +160,6 @@ uint8_t ISPTarget_WaitForProgComplete(const uint8_t ProgrammingMode, const uint1
*/
uint8_t ISPTarget_WaitWhileTargetBusy(void)
{
uint8_t TimeoutMSRemaining = 100;
do
{
/* Manage software timeout */
@ -175,7 +175,15 @@ uint8_t ISPTarget_WaitWhileTargetBusy(void)
}
while ((SPI_ReceiveByte() & 0x01) && TimeoutMSRemaining);
return ((TimeoutMSRemaining) ? STATUS_CMD_OK : STATUS_RDY_BSY_TOUT);
if (TimeoutMSRemaining)
{
TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
return STATUS_CMD_OK;
}
else
{
return STATUS_RDY_BSY_TOUT;
}
}
/** Sends a low-level LOAD EXTENDED ADDRESS command to the target, for addressing of memory beyond the