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Fixed AVRISP-MKII clone project not starting the target's program automatically after exiting TPI programming mode.

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This commit is contained in:
Dean Camera 2010-11-16 13:14:27 +00:00
parent a9f313afa9
commit cbc00c843a
8 changed files with 88 additions and 61 deletions
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43
Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c
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@ -105,6 +105,7 @@ bool XMEGANVM_WaitWhileNVMControllerBusy(void)
{
/* Fetch the current status value via the pointer register (without auto-increment afterwards) */
XPROGTarget_SendByte(PDI_CMD_LD | (PDI_POINTER_INDIRECT << 2) | PDI_DATSIZE_1BYTE);
uint8_t StatusRegister = XPROGTarget_ReceiveByte();
/* We might have timed out waiting for the status register read response, check here */
@ -117,6 +118,48 @@ bool XMEGANVM_WaitWhileNVMControllerBusy(void)
}
}
/** Enables the physical PDI interface on the target and enables access to the internal NVM controller.
*
* \return Boolean true if the PDI interface was enabled successfully, false otherwise
*/
bool XMEGANVM_EnablePDI(void)
{
/* Enable PDI programming mode with the attached target */
XPROGTarget_EnableTargetPDI();
/* Store the RESET key into the RESET PDI register to keep the XMEGA in reset */
XPROGTarget_SendByte(PDI_CMD_STCS | PDI_RESET_REG);
XPROGTarget_SendByte(PDI_RESET_KEY);
/* Lower direction change guard time to 0 USART bits */
XPROGTarget_SendByte(PDI_CMD_STCS | PDI_CTRL_REG);
XPROGTarget_SendByte(0x07);
/* Enable access to the XPROG NVM bus by sending the documented NVM access key to the device */
XPROGTarget_SendByte(PDI_CMD_KEY);
for (uint8_t i = sizeof(PDI_NVMENABLE_KEY); i > 0; i--)
XPROGTarget_SendByte(PDI_NVMENABLE_KEY[i - 1]);
/* Wait until the NVM bus becomes active */
return XMEGANVM_WaitWhileNVMBusBusy();
}
/** Removes access to the target's NVM controller and physically disables the target's physical PDI interface. */
void XMEGANVM_DisablePDI(void)
{
XMEGANVM_WaitWhileNVMBusBusy();
/* Clear the RESET key in the RESET PDI register to allow the XMEGA to run */
XPROGTarget_SendByte(PDI_CMD_STCS | PDI_RESET_REG);
XPROGTarget_SendByte(0x00);
/* Do it twice to make sure it takes effect (silicon bug?) */
XPROGTarget_SendByte(PDI_CMD_STCS | PDI_RESET_REG);
XPROGTarget_SendByte(0x00);
XPROGTarget_DisableTargetPDI();
}
/** Retrieves the CRC value of the given memory space.
*
* \param[in] CRCCommand NVM CRC command to issue to the target