SENT

Table of Contents

• Introduction
• Feature Supported
  • SysConfig Features
  • SENT Design
  • Example

Introduction

The SENT receiver firmware running on PRU-ICSS provides an interface to execute the SENT protocol. The SENT application interacts with the SENT receiver firmware interface. The SENT firmware and examples are based on GPIO interface from PRU-ICSS.

Feature Supported

Feature	Support	Remarks
No. of Channels	8	Can support upto 8 channels using default example using PRU GPIO based capture
	6	Can support upto 6 channels in PRUICSS IEP CAP example (Note : It can be extendend to 8 channels using PRUICSS ECAP)
Min Tick Period	500ns	Experimental support
Sync Correction	Yes	20% tolerance value
Frame buffering	No	Supports only Single frame buffering
Configurable FIFO	No	Will be implemented in future release
Receiving 1 – 6 Data Nibbles	Yes	Receiving and decoding Supported in Firmware
CRC calculation	Yes	CRC calculation done along with data nibble reception
Pause Pulse	No	Will be implemented in future release
Short Serial Message Format	No	Will be implemented in default example using PRU GPIO based capture in future release
	Yes	Supported in PRUICSS IEP CAP example
Enhanced Serial Message Format	No	Will be implemented in default example using PRU GPIO based capture in future release
	Yes	Supported in PRUICSS IEP CAP example
Successive Calibration Pulse Check	No	Will be implemented in future release
Selectable data length for receive	No	Will be implemented in future release

SysConfig Features

Note

It is strongly recommend to use SysConfig where it is available instead of using direct SW API calls. This will help simplify the SW application and also catch common mistakes early in the development cycle.

SysConfig can be used to configure things mentioned below:

• Syscfg based customization will be supported in future releases.

SENT Design

SENT Decoder Design explains the firmware design in detail.

Example

• SENT Decoder Example
• SENT Decoder Using PRUICSS IEP ECAP Example