* - Library Applications:
* - Raised the guard bits in the AVRISP-MKII clone project when in PDI and TPI to 32, to prevent communication errors on low quality connections to a target
* - Added additional bootloader API data to expose the bootloader start address and class to the DFU and CDC class bootloaders
+ * - Reverted AVRISP-MKII clone project watchdog based command timeout patch in favour of a hardware timer, to allow for use in devices with WDTRST fuse programmed
*
* <b>Fixed:</b>
* - Core:
/* 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-- && !(TimeoutExpired))
+ while (Enter_ISP_Params.SynchLoops-- && TimeoutTicksRemaining)
{
uint8_t ResponseBytes[4];
*/
void ISPProtocol_DelayMS(uint8_t DelayMS)
{
- while (DelayMS-- && !(TimeoutExpired))
+ while (DelayMS-- && TimeoutTicksRemaining)
Delay_MS(1);
}
TCNT1 = 0;
TCCR1B = ((1 << WGM12) | (1 << CS11));
- while (SoftSPI_BitsRemaining && !(TimeoutExpired));
+ while (SoftSPI_BitsRemaining && TimeoutTicksRemaining);
TCCR1B = 0;
return SoftSPI_Data;
ISPTarget_SendByte(0x00);
ISPTarget_SendByte(0x00);
}
- while ((ISPTarget_ReceiveByte() & 0x01) && !(TimeoutExpired));
+ while ((ISPTarget_ReceiveByte() & 0x01) && TimeoutTicksRemaining);
- return (TimeoutExpired) ? STATUS_RDY_BSY_TOUT : STATUS_CMD_OK;
+ return (TimeoutTicksRemaining > 0) ? STATUS_CMD_OK : STATUS_RDY_BSY_TOUT;
}
/** Sends a low-level LOAD EXTENDED ADDRESS command to the target, for addressing of memory beyond the
ISPTarget_SendByte(PollAddress >> 8);
ISPTarget_SendByte(PollAddress & 0xFF);
}
- while ((ISPTarget_TransferByte(0x00) == PollValue) && !(TimeoutExpired));
+ while ((ISPTarget_TransferByte(0x00) == PollValue) && TimeoutTicksRemaining);
- if (TimeoutExpired)
- ProgrammingStatus = STATUS_CMD_TOUT;
+ if (!(TimeoutTicksRemaining))
+ ProgrammingStatus = STATUS_CMD_TOUT;
break;
case PROG_MODE_WORD_READYBUSY_MASK:
/** ISR to manage timeouts whilst processing a V2Protocol command */
-ISR(WDT_vect, ISR_BLOCK)
+ISR(TIMER0_COMPA_vect, ISR_NOBLOCK)
{
- TimeoutExpired = true;
- wdt_disable();
+ if (TimeoutTicksRemaining)
+ TimeoutTicksRemaining--;
+ else
+ TCCR0B = 0;
}
/** Initializes the hardware and software associated with the V2 protocol command handling. */
ADC_StartReading(VTARGET_REF_MASK | ADC_RIGHT_ADJUSTED | VTARGET_ADC_CHANNEL_MASK);
#endif
+ /* Timeout timer initialization (~10ms period) */
+ OCR0A = (((F_CPU / 1024) / 100) - 1);
+ TCCR0A = (1 << WGM01);
+ TIMSK0 = (1 << OCIE0A);
+
V2Params_LoadNonVolatileParamValues();
#if defined(ENABLE_ISP_PROTOCOL)
{
uint8_t V2Command = Endpoint_Read_8();
- /* Start the watchdog with timeout interrupt enabled to manage the timeout */
- TimeoutExpired = false;
- wdt_enable(WDTO_1S);
- WDTCSR |= (1 << WDIE);
+ /* Reset timeout counter duration and start the timer */
+ TimeoutTicksRemaining = COMMAND_TIMEOUT_TICKS;
+ TCCR0B = ((1 << CS02) | (1 << CS00));
switch (V2Command)
{
break;
}
- /* Disable the timeout management watchdog timer */
- wdt_disable();
+ /* Disable the timeout management timer */
+ TCCR0B = 0;
Endpoint_WaitUntilReady();
Endpoint_SelectEndpoint(AVRISP_DATA_OUT_EPNUM);
/** Timeout period for each issued command from the host before it is aborted (in 10ms ticks). */
#define COMMAND_TIMEOUT_TICKS 100
- /** Command timeout expiration flag, GPIOR for speed. */
- #define TimeoutExpired GPIOR1
+ /** Command timeout ticks remaining counter, GPIOR for speed. */
+ #define TimeoutTicksRemaining GPIOR1
/** MUX mask for the VTARGET ADC channel number. */
#define VTARGET_ADC_CHANNEL_MASK ADC_GET_CHANNEL_MASK(VTARGET_ADC_CHANNEL)
uint8_t StatusRegister = XPROGTarget_ReceiveByte();
/* We might have timed out waiting for the status register read response, check here */
- if (TimeoutExpired)
+ if (!(TimeoutTicksRemaining))
return false;
/* Check the status register read response to see if the NVM bus is enabled */
uint8_t StatusRegister = XPROGTarget_ReceiveByte();
/* We might have timed out waiting for the status register read response, check here */
- if (TimeoutExpired)
+ if (!(TimeoutTicksRemaining))
return false;
/* Check to see if the BUSY flag is still set */
/* Send the address of the location to read from */
TINYNVM_SendPointerAddress(ReadAddress);
- while (ReadSize-- && !(TimeoutExpired))
+ while (ReadSize-- && TimeoutTicksRemaining)
{
/* Read the byte of data from the target */
XPROGTarget_SendByte(TPI_CMD_SLD | TPI_POINTER_INDIRECT_PI);
*(ReadBuffer++) = XPROGTarget_ReceiveByte();
}
- return (TimeoutExpired == false);
+ return (TimeoutTicksRemaining > 0);
}
/** Writes word addressed memory to the target's memory spaces.
uint8_t StatusRegister = XPROGTarget_ReceiveByte();
/* We might have timed out waiting for the status register read response, check here */
- if (TimeoutExpired)
+ if (!(TimeoutTicksRemaining))
return false;
/* Check the status register read response to see if the NVM bus is enabled */
uint8_t StatusRegister = XPROGTarget_ReceiveByte();
/* We might have timed out waiting for the status register read response, check here */
- if (TimeoutExpired)
+ if (!(TimeoutTicksRemaining))
return false;
/* Check to see if the BUSY flag is still set */
for (uint8_t i = 0; i < XMEGA_CRC_LENGTH_BYTES; i++)
((uint8_t*)CRCDest)[i] = XPROGTarget_ReceiveByte();
- return (TimeoutExpired == false);
+ return (TimeoutTicksRemaining > 0);
}
/** Reads memory from the target's memory spaces.
/* 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);
- while (ReadSize-- && !(TimeoutExpired))
+ while (ReadSize-- && TimeoutTicksRemaining)
*(ReadBuffer++) = XPROGTarget_ReceiveByte();
- return (TimeoutExpired == false);
+ return (TimeoutTicksRemaining > 0);
}
/** Writes byte addressed memory to the target's memory spaces.
XPROGTarget_SetRxMode();
/* Wait until a byte has been received before reading */
- while (!(UCSR1A & (1 << RXC1)) && !(TimeoutExpired));
+ while (!(UCSR1A & (1 << RXC1)) && TimeoutTicksRemaining);
return UDR1;
}
projects / pub / USBasp.git / commitdiff