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2024-12-08 23:33:39 +00:00
parent c15eba5ca9
commit a971e92a58
2 changed files with 26 additions and 8 deletions
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24
src/DebugToolDrivers/WCH/WchLinkDebugInterface.cpp
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@@ -239,8 +239,8 @@ namespace DebugToolDrivers::Wch
* command.
*
* This sometimes leads to exceptions occurring on the target, when the program buffer contains certain
* instructions before the partial block write command is serviced. This is why we clear the program
* buffer before invoking the partial block write command.
* instructions before the partial block write command is invoked. This is why we clear the program
* buffer beforehand.
*/
this->riscVTranslator.clearProgramBuffer();
this->wchLinkInterface.writeFlashPartialBlock(startAddress, buffer);
@@ -324,6 +324,16 @@ namespace DebugToolDrivers::Wch
this->flashProgramOpcodes
);
/*
* Would this not be better placed in endProgrammingSession()? We could persist the command type we invoked
* to perform the write, and if required, reattach at the end of the programming session.
*
* I don't think that would work, because the target needs to be accessible for other operations whilst in
* programming mode. We may perform other operations in between program memory writes, but that wouldn't
* work if we left the target in an inaccessible state between writes. So I think we have to reattach here.
*
* TODO: Review after v2.0.0.
*/
this->deactivate();
this->wchLinkInterface.sendCommandAndWaitForResponse(Commands::Control::GetDeviceInfo{});
this->activate();
@@ -350,7 +360,13 @@ namespace DebugToolDrivers::Wch
}
void WchLinkDebugInterface::enableProgrammingMode() {
// Nothing to do here
/*
* Nothing to do here
*
* We cannot prepare the WCH-Link tool for a programming session here, as the preparation process differs
* across the two types of flash write commands (full and partial block write). We don't know which command
* we'll be utilising at this point, so we perform the preparation in writeMemory().
*/
}
void WchLinkDebugInterface::disableProgrammingMode() {
@@ -360,7 +376,7 @@ namespace DebugToolDrivers::Wch
void WchLinkDebugInterface::applyAccessRestrictions(TargetMemorySegmentDescriptor& memorySegmentDescriptor) {
if (memorySegmentDescriptor.type == TargetMemorySegmentType::FLASH) {
/*
* Actually, we *can* write to flash memory whilst in debug mode (via a partial page write), but we don't
* Actually, we *can* write to flash memory whilst in debug mode (via a partial block write), but we don't
* need to, so I'm just going to block it, for now.
*/
memorySegmentDescriptor.debugModeAccess.writeable = false;