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How to add a new device

We only accept new devices whoms firmware is hantek protocol compatible. Codewise you will only need to touch files within openhantek/src/hantekdso.

Firmware and usb access

The firmware goes to openhantek/res/firmware in the hex format. Please keep to the filename convention devicename-firmware.hex and devicename-loader.hex. The openhantek/res/firmwares.qrc should list the new files. The utils/udev_rules/60-openhantek.rules file needs the usb vendor/device id to add access permissions.

The hantek protocol

The hantek protocol itself is encoded in the src/hantekprotocol files. If your device needs other or slightly altered packets, you would need to modify those files.

Add your model information

You will only need to touch files within openhantek/src/hantekdso/models.

  1. Create a new class with your model name and inherit from DSOModel:
struct ModelDSO2090 : public DSOModel {
    static const int ID = 0x2090; // Freely chooseable but unique id
    ModelDSO2090();
    void applyRequirements(HantekDsoControl* dsoControl) const override;
};
  1. Implement the constructor of your class, where you need to supply the constructor of DSOModel with some information. The DSOModel constructor looks like this:
DSOModel(int ID, long vendorID, long productID, long vendorIDnoFirmware, long productIDnoFirmware,
             std::string firmwareToken, const std::string name)
  • You need to find out the usb vendor id and product id for your digital oscilloscope after it has received the firmware (for long vendorID, long productID) and before it has a valid firmware (for long vendorIDnoFirmware, long productIDnoFirmware).
  • The firmware token is just the devicename part of the firmware (remember that we used devicename-firmware.hex and devicename-loader.hex).
  • The last parameter is the user visible name of the device.
  1. Add your device specific constants via the specification field, for instance:
    specification.samplerate.single.base = 50e6;
    specification.samplerate.single.max = 50e6;
    specification.samplerate.single.maxDownsampler = 131072;
    specification.samplerate.single.recordLengths = {UINT_MAX, 10240, 32768};
    specification.samplerate.multi.base = 100e6;
    specification.samplerate.multi.max = 100e6;
    specification.samplerate.multi.maxDownsampler = 131072;
    specification.samplerate.multi.recordLengths = {UINT_MAX, 20480, 65536};
  1. The actual commands that are send, need to be defined as well, for instance:
    specification.command.control.setOffset = CONTROL_SETOFFSET;
    specification.command.control.setRelays = CONTROL_SETRELAYS;
    specification.command.bulk.setGain = BulkCode::SETGAIN;
    specification.command.bulk.setRecordLength = BulkCode::SETTRIGGERANDSAMPLERATE;
    specification.command.bulk.setChannels = BulkCode::SETTRIGGERANDSAMPLERATE;
    specification.command.bulk.setSamplerate = BulkCode::SETTRIGGERANDSAMPLERATE;
    specification.command.bulk.setTrigger = BulkCode::SETTRIGGERANDSAMPLERATE;
    specification.command.bulk.setPretrigger = BulkCode::SETTRIGGERANDSAMPLERATE;
  1. Add an instance of your class to the cpp file. The DSOModel constructor will register your new model automatically to the ModelRegistry:
static ModelDSO2090 modelInstance;

Example: New Device Model DSO-6021

As an example for adding a new device you can check commit 77ba4ad and read about adding the new model DSO-6021 at my firmware project.