CCS/BOOSTXL-DRV8305EVM: BOOSTXL-DRV8305EVM or BOOSTXL-DRV8323RS SPI 3 wire possible?

ben5en

Intellectual 520 points

Part Number: BOOSTXL-DRV8305EVM
Other Parts Discussed in Thread: DRV8305, DRV8323, TMS320F28377S

Tool/software: Code Composer Studio

Hello,

does the DRV8305 and/or DRV8323 support SPI in 3-wire mode?

Thanks!

over 6 years ago

0 Rick Duncan over 6 years ago

TI__Guru** 114905 points

Hi Ben,

The devices do not support 3-wire SPI mode.

0 ben5en over 6 years ago in reply to Rick Duncan

Intellectual 520 points

Thanks for your fast response!

Is it a "legal" way to toggle the TRIWIRE bit in the SPIPRI Register in the normal program execution after Init the SPI Peripheral?

In detail: I want to use a Infineon TLE5012 angle sensor and the DRV8305 / DRV8323 driver on the same SPI-Bus @ TMS320F28377S. The Sensor is only 3-wire SPI compatible.

// fictive example

[running in main or ISR after init peripheral]

SpiaRegs.SPIPRI.bit.TRIWIRE = 1;
readTLE5012();
SpiaRegs.SPIPRI.bit.TRIWIRE = 0;
readDRV830x();

Thanks

Motor drivers

Motor drivers forum

CCS/BOOSTXL-DRV8305EVM: BOOSTXL-DRV8305EVM or BOOSTXL-DRV8323RS SPI 3 wire possible?