SPRACO5 September   2019 TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1 , TMS320F280040-Q1 , TMS320F280040C-Q1 , TMS320F280041 , TMS320F280041-Q1 , TMS320F280041C , TMS320F280041C-Q1 , TMS320F280045 , TMS320F280048-Q1 , TMS320F280048C-Q1 , TMS320F280049 , TMS320F280049-Q1 , TMS320F280049C , TMS320F280049C-Q1 , TMS320F28384D , TMS320F28384D-Q1 , TMS320F28384S , TMS320F28384S-Q1 , TMS320F28386D , TMS320F28386D-Q1 , TMS320F28386S , TMS320F28386S-Q1 , TMS320F28388D , TMS320F28388S

 

  1.   Leveraging High Resolution Capture (HRCAP) for Single Wire Data Transfer
    1.     Trademarks
    2. 1 Introduction
    3. 2 System Showcase
      1. 2.1 HRPWM: Encoding Unit
      2. 2.2 HRCAP: Decoding Unit
    4. 3 Software Flow
      1. 3.1 User Configurable Parameters
      2. 3.2 SFO Background Loop
      3. 3.3 Interrupt Based Encoding and Decoding
      4. 3.4 Offset Calibration
    5. 4 Experimental Setup and Results
    6. 5 Summary
    7. 6 References

Leveraging High Resolution Capture (HRCAP) for Single Wire Data Transfer

In various industrial and automotive applications, it is often required to transfer data between two electrically isolated devices. The standard protocols require more than one communication line to transfer data, which leads to the use of multiple isolation buffers that ultimately increase the system cost. Also, in case of standard serial protocols, unit pulse/clock is used to encode only a single bit. This application report discusses how to leverage the high resolution capture unit in C2000™ to improve the transmission latency and reduce the cost by facilitating data transfer in just a single pulse through a single wire. The experimental setup details and results are also being discussed in this application report. You can quickly verify and utilize this system in various applications using the provided algorithm and source code that can be downloaded from the C2000Ware.