Other Parts Discussed in Thread: BOOSTXL-POSMGR
Tool/software:
dear E2E design support,
as a test bench developer one of my current tasks is to evaluate possible solutions for simulating resolver respectively sin/cos encoder HW to provide angular position signals from an affordable stand-alone device. After consulting your internet pages, I wondered whether the LAUNCHXL-F28379D
https://www.ti.com/tool/LAUNCHXL-F28379D?keyMatch=launchxl%20f28379d&tisearch=universal_search
would fit for purpose, your feedback would be more than welcome...
=> a brief task description you can find below
Thank you in advance for your kind support, best regards
W. Schimke
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my questions
- how many DACs are externally available from the F28379D?
here I'm a little confused. While the launchpad quick start guide
https://www.ti.com/lit/ml/sprui73a/sprui73a.pdf?ts=1744176644862&ref_url=https%253A%252F%252Fwww.ti.com%252Ftool%252FLAUNCHXL-F28379D
indicates 4 DAC pins, the TMS320F2837xD datasheet
https://www.ti.com/lit/ds/symlink/tms320f28379d.pdf?ts=1744562594793
points out 3 DAC’s available
=> for differential signal generation, I would need at least 4 DAC’s (SIN+, SIN-, COS+, COS-) - is the LAUNCHXL-F28379D alternatively programmable using Mathworks C2000 block set?
Pricing and Licensing - MATLAB & Simulink
=> we already use Simulink for other purposes and like to benefit from corresponding experience
=> which SW applications beside Matlab/Simulink are required to configure the launchpad, e.g. to upload the compiled model to target? Maybe the Code Composer Studio
https://www.ti.com/tool/CCSTUDIO ?
=> how much do they cost?
=> if additional SW applications are required, do they need license and if so, which additional costs arise from that? - are there other launchpads/eval boards fitting better for purpose?
maybe I did not query your portfolio carefully enough
=> please suggest better fitting launchpads/eval boards if any - are there corresponding reference designs for resolver/sin/cos encoder simulation available?
I performed a quick search at
https://www.ti.com/reference-designs/index.html
but could not find anything matching sufficiently to the basic task description. Maybe I did not search carefully enough?
=> please suggest reference designs if any
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basic task description: affordable stand-alone device for simulating a rotary resolver or a sin/cos encoder
- angular position is calculated from received speed input, incl. overflow handling
- sensor signals are calculated based on actual angular position
- either sin/cos encoder signals (no excitation) or resolver signals (AM modulated excitation signal on top) shall be generated
- 4 DAC’s to be used to stimulate the calculated sensor signals (SIN+, SIN-, COS+, COS-)
- add. diagnostic signals to be ignored for a first design
- failure injection (offset, amplitude, phase/quadrature failures) to be injected if they do not require add. HW (= no open line/shortage to Vbat or GND/mutual short of signal lines)
- host communication via CAN (here we have a solution in place to create a GUI and/or to manipulate set/actual values during runtime)
