61.11. SEI Slave: Simulate SSI Encoder

61.11.1. Overview

This demo shows SEI interface simulate SSI encoder and generate position data, then print related information by uart console.

61.11.2. configuration

  • Two development boards are required, one as the master and one as the slave.

  • Master sample path is “samples/drivers/sei/master/ssi”, slave is this example.

  • Master’s SEI_CLK pins should bridging master side，and slave’s SEI_CLK pins should bridging slave side.

  • Connect master’s SEI pins DATA_P/DATA_N to slave’s SEI pins DATA_P/DATA_N.

  • Connect master’s SEI pins CLKO_P/CLKO_N to slave’s SEI pins CLKI_P/CLKI_N.

  • Connect master’s GND to slave’s GND.

61.11.3. Running the example

  • When the example runs successfully, the console shows the following log. ST’s value increasing by 1 each sample, sample interval is 200ms.

----------------------------------------------------------------------
$$\   $$\ $$$$$$$\  $$\      $$\ $$\
$$ |  $$ |$$  __$$\ $$$\    $$$ |\__|
$$ |  $$ |$$ |  $$ |$$$$\  $$$$ |$$\  $$$$$$$\  $$$$$$\   $$$$$$\
$$$$$$$$ |$$$$$$$  |$$\$$\$$ $$ |$$ |$$  _____|$$  __$$\ $$  __$$\
$$  __$$ |$$  ____/ $$ \$$$  $$ |$$ |$$ /      $$ |  \__|$$ /  $$ |
$$ |  $$ |$$ |      $$ |\$  /$$ |$$ |$$ |      $$ |      $$ |  $$ |
$$ |  $$ |$$ |      $$ | \_/ $$ |$$ |\$$$$$$$\ $$ |      \$$$$$$  |
\__|  \__|\__|      \__|     \__|\__| \_______|\__|       \______/
----------------------------------------------------------------------
SEI slave SSI sample
Started sei engine!
MT:0xa5a, ST:0x5a5, sample_tm1:209155491, sample_tm2:0, sample_interval:1161974 us
MT:0xa5a, ST:0x5a6, sample_tm1:245155712, sample_tm2:209155491, sample_interval:200001 us
MT:0xa5a, ST:0x5a7, sample_tm1:281155932, sample_tm2:245155712, sample_interval:200001 us
MT:0xa5a, ST:0x5a8, sample_tm1:317156152, sample_tm2:281155932, sample_interval:200001 us
MT:0xa5a, ST:0x5a9, sample_tm1:353156373, sample_tm2:317156152, sample_interval:200001 us
MT:0xa5a, ST:0x5aa, sample_tm1:389156593, sample_tm2:353156373, sample_interval:200001 us
MT:0xa5a, ST:0x5ab, sample_tm1:425156813, sample_tm2:389156593, sample_interval:200001 us
MT:0xa5a, ST:0x5ac, sample_tm1:461157033, sample_tm2:425156813, sample_interval:200001 us
MT:0xa5a, ST:0x5ad, sample_tm1:497157253, sample_tm2:461157033, sample_interval:200001 us
MT:0xa5a, ST:0x5ae, sample_tm1:533157472, sample_tm2:497157253, sample_interval:200001 us
MT:0xa5a, ST:0x5af, sample_tm1:569157692, sample_tm2:533157472, sample_interval:200001 us
MT:0xa5a, ST:0x5b0, sample_tm1:605157912, sample_tm2:569157692, sample_interval:200001 us
MT:0xa5a, ST:0x5b1, sample_tm1:641158132, sample_tm2:605157912, sample_interval:200001 us
MT:0xa5a, ST:0x5b2, sample_tm1:677158352, sample_tm2:641158132, sample_interval:200001 us
MT:0xa5a, ST:0x5b3, sample_tm1:713158573, sample_tm2:677158352, sample_interval:200001 us
MT:0xa5a, ST:0x5b4, sample_tm1:749158793, sample_tm2:713158573, sample_interval:200001 us
MT:0xa5a, ST:0x5b5, sample_tm1:785159013, sample_tm2:749158793, sample_interval:200001 us
MT:0xa5a, ST:0x5b6, sample_tm1:821159233, sample_tm2:785159013, sample_interval:200001 us
MT:0xa5a, ST:0x5b7, sample_tm1:857159453, sample_tm2:821159233, sample_interval:200001 us
MT:0xa5a, ST:0x5b8, sample_tm1:893159673, sample_tm2:857159453, sample_interval:200001 us
MT:0xa5a, ST:0x5b9, sample_tm1:929159893, sample_tm2:893159673, sample_interval:200001 us
MT:0xa5a, ST:0x5ba, sample_tm1:965160112, sample_tm2:929159893, sample_interval:200001 us