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Complete TPI protocol code to enter and exit TPI programming mode for the ATTINY 6-pin devices.

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This commit is contained in:
Dean Camera 2009-12-24 03:02:26 +00:00
parent 65fcebf478
commit 35dac470f2
4 changed files with 36 additions and 38 deletions
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57
Projects/AVRISP/Lib/XPROG/TINYNVM.c
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@ -38,44 +38,35 @@
#if defined(ENABLE_XPROG_PROTOCOL) || defined(__DOXYGEN__)
/** Busy-waits while the NVM controller is busy performing a NVM operation, such as a FLASH page read or CRC
* calculation.
/** Busy-waits while the NVM controller is busy performing a NVM operation, such as a FLASH page read.
*
* \return Boolean true if the NVM controller became ready within the timeout period, false otherwise
*/
bool XMEGANVM_WaitWhileNVMBusBusy(void)
bool TINYNVM_WaitWhileNVMBusBusy(void)
{
// TODO
TCNT0 = 0;
TIFR0 = (1 << OCF1A);
uint8_t TimeoutMS = TINY_NVM_BUSY_TIMEOUT_MS;
/* Poll the STATUS register to check to see if NVM access has been enabled */
while (TimeoutMS)
{
/* 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;
if (TIFR0 & (1 << OCF1A))
{
TIFR0 = (1 << OCF1A);
TimeoutMS--;
}
}
return false;
}
/** Waits while the target's NVM controller is busy performing an operation, exiting if the
* timeout period expires.
*
* \return Boolean true if the NVM controller became ready within the timeout period, false otherwise
*/
bool XMEGANVM_WaitWhileNVMControllerBusy(void)
{
// TODO
return false;
}
/** Retrieves the CRC value of the given memory space.
*
* \param[in] CRCCommand NVM CRC command to issue to the target
* \param[out] CRCDest CRC Destination when read from the target
*
* \return Boolean true if the command sequence complete successfully
*/
bool XMEGANVM_GetMemoryCRC(const uint8_t CRCCommand, uint32_t* const CRCDest)
{
// TODO
return true;
}
/** Reads memory from the target's memory spaces.
*
* \param[in] ReadAddress Start address to read from within the target's address space
@ -84,7 +75,7 @@ bool XMEGANVM_GetMemoryCRC(const uint8_t CRCCommand, uint32_t* const CRCDest)
*
* \return Boolean true if the command sequence complete successfully
*/
bool XMEGANVM_ReadMemory(const uint32_t ReadAddress, uint8_t* ReadBuffer, const uint16_t ReadSize)
bool TINYNVM_ReadMemory(const uint32_t ReadAddress, uint8_t* ReadBuffer, const uint16_t ReadSize)
{
// TODO
@ -99,7 +90,7 @@ bool XMEGANVM_ReadMemory(const uint32_t ReadAddress, uint8_t* ReadBuffer, const
*
* \return Boolean true if the command sequence complete successfully
*/
bool XMEGANVM_WriteMemory(const uint8_t WriteCommand, const uint32_t WriteAddress, const uint8_t* WriteBuffer)
bool TINYNVM_WriteMemory(const uint8_t WriteCommand, const uint32_t WriteAddress, const uint8_t* WriteBuffer)
{
// TODO
@ -113,7 +104,7 @@ bool XMEGANVM_WriteMemory(const uint8_t WriteCommand, const uint32_t WriteAddres
*
* \return Boolean true if the command sequence complete successfully
*/
bool XMEGANVM_EraseMemory(const uint8_t EraseCommand, const uint32_t Address)
bool TINYNVM_EraseMemory(const uint8_t EraseCommand, const uint32_t Address)
{
// TODO