This thread collects reports from people building custom WebApp plugins with the FRCap SDK. If points are the problem, see this thread about fetching and saving points.

Status

Open collection. There is no confirmed fix yet.

Symptoms

  • GetPoints and SavePoint work.
  • The basic robot status call, getSystemVarValue and setSystemVarValue return success: false.
  • The server message is "无效的JSON数据", which means "Invalid JSON data".

Other FRCap reports

  • Importing a custom .frcap file fails with error 403. The cause is not confirmed.
  • In SimMachine v4.0.0, one user could not find FRCap Management.
  • One user pointed to the FRCap API notes, which say write and chmod need a callback on QX. This is not confirmed as a cause, but it is worth checking if file writing stalls on QX.

Please reply with

  • Software version and controller type: QX or LA
  • frcap-ui version
  • The exact call and request body
  • Full server response
  • Whether it fails only on the robot, only in SimMachine or both