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Merged
haneefdm merged 1 commit into from
Jan 21, 2026
Merged

Add FS-RTOS support #87

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1 change: 1 addition & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
# Change Log

- Read stackTop for current running task with function contributed by @malsyned also in uc/OS-II.
- Add FS-RTOS support. FS-RTOS is very similar to uC/OS-II, so no need to create a own implementation for it.

## 0.0.14-pre1 - Jan 14, 2026

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109 changes: 74 additions & 35 deletions src/rtos/rtos-ucosii.ts
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Expand Up @@ -371,8 +371,9 @@ export class RTOSUCOS2 extends RTOSCommon.RTOSBase {
eventObject: RTOSCommon.RTOSStrToValueMap,
_frameId: number
): Promise<EventInfo> {
const eventInfo: EventInfo = { address, eventType: parseInt(eventObject['OSEventType']?.val) };
const eventTypeConverted = convertFsEventType(parseInt(eventObject['OSEventType']?.val));

const eventInfo: EventInfo = {address, eventType: eventTypeConverted };
if (eventObject['OSEventName']?.val) {
const value = eventObject['OSEventName']?.val;
const matchName = value.match(/"(.*)"$/);
Expand Down Expand Up @@ -459,42 +460,45 @@ export class RTOSUCOS2 extends RTOSCommon.RTOSBase {
if (flagGroupPtr.variablesReference > 0 && flagGroupPtr.evaluateName) {
const osFlagGrp = await this.getVarChildrenObj(flagGroupPtr.variablesReference, flagGroupPtr.name);
// Check if we are looking at an initialized flag group
if (osFlagGrp && parseInt(osFlagGrp['OSFlagType']?.val) === OsEventType.Flag) {
const groupAddr = parseInt(
(await this.getExprVal(`&(${flagGroupPtr.evaluateName})`, frameId)) || ''
);
const flagGroup: FlagGroup = { address: groupAddr };
const reprValue = osFlagGrp['OSFlagName']?.val;
if (reprValue) {
const matchName = reprValue.match(/"(.*)"$/);
flagGroup.name = matchName ? matchName[1] : reprValue;
}

// Follow the linked list of flag group nodes. The cast is safe here because we checked OSFlagType before
let flagNode = await this.getExprValChildrenObj(
`(OS_FLAG_NODE *)(${osFlagGrp['OSFlagWaitList']?.exp})`,
frameId
);
while (flagNode) {
const waitingTcbAddr = parseInt(flagNode['OSFlagNodeTCB']?.val || '');
if (!waitingTcbAddr || waitingTcbAddr === 0) {
break;
if (osFlagGrp) {
const flagType = parseInt(osFlagGrp['OSFlagType']?.val);
if (flagType === OsEventType.Flag || flagType === OsEventTypeFS.Flag) {
const groupAddr = parseInt(
(await this.getExprVal(`&(${flagGroupPtr.evaluateName})`, frameId)) || ''
);
const flagGroup: FlagGroup = { address: groupAddr };
const reprValue = osFlagGrp['OSFlagName']?.val;
if (reprValue) {
const matchName = reprValue.match(/"(.*)"$/);
flagGroup.name = matchName ? matchName[1] : reprValue;
}

if (!result.has(waitingTcbAddr)) {
result.set(waitingTcbAddr, []);
}
result.get(waitingTcbAddr)?.push(flagGroup);
// Follow the linked list of flag group nodes. The cast is safe here because we checked OSFlagType before
let flagNode = await this.getExprValChildrenObj(
`(OS_FLAG_NODE *)(${osFlagGrp['OSFlagWaitList']?.exp})`,
frameId
);
while (flagNode) {
const waitingTcbAddr = parseInt(flagNode['OSFlagNodeTCB']?.val || '');
if (!waitingTcbAddr || waitingTcbAddr === 0) {
break;
}

const nextFlagNodeAddr = parseInt(flagNode['OSFlagNodeNext']?.val);
if (nextFlagNodeAddr === 0) {
break;
} else {
// Need to cast here since the next pointer is declared as void *
flagNode = await this.getExprValChildrenObj(
`(OS_FLAG_NODE *) ${nextFlagNodeAddr}`,
frameId
);
if (!result.has(waitingTcbAddr)) {
result.set(waitingTcbAddr, []);
}
result.get(waitingTcbAddr)?.push(flagGroup);

const nextFlagNodeAddr = parseInt(flagNode['OSFlagNodeNext']?.val);
if (nextFlagNodeAddr === 0) {
break;
} else {
// Need to cast here since the next pointer is declared as void *
flagNode = await this.getExprValChildrenObj(
`(OS_FLAG_NODE *) ${nextFlagNodeAddr}`,
frameId
);
}
}
}
}
Expand Down Expand Up @@ -641,12 +645,47 @@ const PendingTaskStates = [
OsTaskState.PEND_FLAGGROUP
] as const;

// Used as OS_EVENT->OSEventType & OS_FLAG_GRP->OSFlagType
enum OsEventType {
Mailbox = 1,
Queue = 2,
Semaphore = 3,
Mutex = 4,
Flag = 5
Flag = 5,
Unknown = 0xff
}

// Used as OS_EVENT->OSEventType & OS_FLAG_GRP->OSFlagType in some special uC/OS-II adaptions
enum OsEventTypeFS {
Mailbox = 0x0f,
Queue = 0x33,
Semaphore = 0x66,
Mutex = 0x99,
Flag = 0xcc
}

function convertFsEventType(fsType: number | undefined): OsEventType {
let eventTypeConverted = OsEventType.Unknown;

switch (fsType) {
case OsEventTypeFS.Mailbox:
eventTypeConverted = OsEventType.Mailbox;
break;
case OsEventTypeFS.Queue:
eventTypeConverted = OsEventType.Queue;
break;
case OsEventTypeFS.Semaphore:
eventTypeConverted = OsEventType.Semaphore;
break;
case OsEventTypeFS.Mutex:
eventTypeConverted = OsEventType.Mutex;
break;
case OsEventTypeFS.Flag:
eventTypeConverted = OsEventType.Flag;
break;
}

return eventTypeConverted;
}

function getEventTypeForTaskState(state: OsTaskState): OsEventType {
Expand Down