Tool/software:
i want to use DRV8452SPWPR stepper motor driver for controlling my stepper motor where can i get reference schematic and any code regarding it. i am not able to drive motor and communicate with driver through spi.
i am using stm32 to control driver.
Hi Ganesh,
The DRV8452DDWR 44-pins is identical to the DRV8462DDWR 44-pins with form factor and functionality. All information necessary to develop an application with the DRV8452 is provided in its datasheet. In addition to this, a DRV8462EVM is available for product evaluation. The DRV8462EVM uses a DRV8462 DDW package, a superset stepper driver device which is 100% functional compatible with the DRV8452 in DDW package, the only difference is the MAX operating voltage 55 V vs. 65 V.
The DRV8462EVM user's guide available on the EVM webpage, describes how to use the EVM with the DRV84xx_DRV82x2_DRV89x2-EVM-GUI, https://www.ti.com/tool/DRV8462EVM. The EVM user's guide can be viewed and downloaded from, https://www.ti.com/lit/pdf/slou558.
In addition to these, the EVM webpage has the EVM hardware design files, schematic and EVM firmware source code for download. For users interested in the auto-torque feature of this device this application note will be of additional help, https://www.ti.com/lit/an/slvaff1/slvaff1.pdf.
The C project and source code for the DRV8462EVM can be downloaded from the EVM webpage, https://www.ti.com/tool/DRV8462EVM from here, https://dr-download.ti.com/software-development/support-software/MD-abhVTZhobH/1.0.2/DRV84XX-DRV89X2-DRV82X2-EVM-SOFTWARE.zip.
If you're not able to communicate to the device via SPI please ensure the device is awake nSLEEP = 1. In your schematic I noticed the following. The package mentioned in DDWR which is 44-pin. However you also mentioned HTSSOP-28 which is the PWM package. Which package were you using? If it was HTSSOP-28 please make sure you are using the DRV8452SPWPR. Only this "S" variant supports SPI. The plain DRV8452PWPR is GPIO interface and does not support SPI.
Please send us the SPI waveforms for further analysis if you are unable to solve the issue for SDI, SDO, SCLK and nSCS.
This FAQ would be useful for DRV8452SPWPR design, https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1319067/faq-how-to-drop-a-drv8452-into-a-drv8434s-socket-advantages?tisearch=e2e-sitesearch&keymatch=DRV8452#.
Just for future reference please feel free to do a search on TI E2E forum https://e2e.ti.com/ with your query. There are several discussions regarding this subject and chances are you may find a quick answer right away. Thank you.
Regards, Murugavel
