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Changed AVRISP-MKII project to use the Watchdog interrupt for command timeouts, to reduce CPU usage and free timer 0 for other uses in the future.

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This commit is contained in:
Dean Camera 2011-01-22 17:48:06 +00:00
parent ef44b8c036
commit 26017b68b0
10 changed files with 37 additions and 35 deletions
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8
Projects/AVRISP-MKII/Lib/XPROG/TINYNVM.c
View file

@ -85,7 +85,7 @@ bool TINYNVM_WaitWhileNVMBusBusy(void)
uint8_t StatusRegister = XPROGTarget_ReceiveByte();
/* We might have timed out waiting for the status register read response, check here */
if (!(TimeoutTicksRemaining))
if (TimeoutExpired)
return false;
/* Check the status register read response to see if the NVM bus is enabled */
@ -110,7 +110,7 @@ bool TINYNVM_WaitWhileNVMControllerBusy(void)
uint8_t StatusRegister = XPROGTarget_ReceiveByte();
/* We might have timed out waiting for the status register read response, check here */
if (!(TimeoutTicksRemaining))
if (TimeoutExpired)
return false;
/* Check to see if the BUSY flag is still set */
@ -176,14 +176,14 @@ bool TINYNVM_ReadMemory(const uint16_t ReadAddress,
/* Send the address of the location to read from */
TINYNVM_SendPointerAddress(ReadAddress);
while (ReadSize-- && TimeoutTicksRemaining)
while (ReadSize-- && !(TimeoutExpired))
{
/* Read the byte of data from the target */
XPROGTarget_SendByte(TPI_CMD_SLD | TPI_POINTER_INDIRECT_PI);
*(ReadBuffer++) = XPROGTarget_ReceiveByte();
}
return (TimeoutTicksRemaining != 0);
return (TimeoutExpired == false);
}
/** Writes word addressed memory to the target's memory spaces.

10
Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c
View file

@ -80,7 +80,7 @@ bool XMEGANVM_WaitWhileNVMBusBusy(void)
uint8_t StatusRegister = XPROGTarget_ReceiveByte();
/* We might have timed out waiting for the status register read response, check here */
if (!(TimeoutTicksRemaining))
if (TimeoutExpired)
return false;
/* Check the status register read response to see if the NVM bus is enabled */
@ -109,7 +109,7 @@ bool XMEGANVM_WaitWhileNVMControllerBusy(void)
uint8_t StatusRegister = XPROGTarget_ReceiveByte();
/* We might have timed out waiting for the status register read response, check here */
if (!(TimeoutTicksRemaining))
if (TimeoutExpired)
return false;
/* Check to see if the BUSY flag is still set */
@ -204,7 +204,7 @@ bool XMEGANVM_GetMemoryCRC(const uint8_t CRCCommand, uint32_t* const CRCDest)
for (uint8_t i = 0; i < XMEGA_CRC_LENGTH; i++)
((uint8_t*)CRCDest)[i] = XPROGTarget_ReceiveByte();
return (TimeoutTicksRemaining != 0);
return (TimeoutExpired == false);
}
/** Reads memory from the target's memory spaces.
@ -236,10 +236,10 @@ bool XMEGANVM_ReadMemory(const uint32_t ReadAddress, uint8_t* ReadBuffer, uint16
/* 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-- && TimeoutTicksRemaining)
while (ReadSize-- && !(TimeoutExpired))
*(ReadBuffer++) = XPROGTarget_ReceiveByte();
return (TimeoutTicksRemaining != 0);
return (TimeoutExpired == false);
}
/** Writes byte addressed memory to the target's memory spaces.

2
Projects/AVRISP-MKII/Lib/XPROG/XPROGProtocol.c
View file

@ -143,6 +143,8 @@ static void XPROGProtocol_LeaveXPROGMode(void)
TINYNVM_DisableTPI();
#if defined(XCK_RESCUE_CLOCK_ENABLE) && defined(ENABLE_ISP_PROTOCOL)
/* If the XCK rescue clock option is enabled, we need to restart it once the
* XPROG mode has been exited, since the XPROG protocol stops it after use. */
ISPTarget_ConfigureRescueClock();
#endif

2
Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
View file

@ -151,7 +151,7 @@ uint8_t XPROGTarget_ReceiveByte(void)
XPROGTarget_SetRxMode();
/* Wait until a byte has been received before reading */
while (!(UCSR1A & (1 << RXC1)) && TimeoutTicksRemaining);
while (!(UCSR1A & (1 << RXC1)) && !(TimeoutExpired));
return UDR1;
}