DRV2605LEVM-MD: Help with I2C programming or connecting to arduino

Ray Vincent Aranzaso

Part Number: DRV2605LEVM-MD
Other Parts Discussed in Thread: DRV2605L

Hi,

Good Day. I have a customer who is working with DRV2605LEVM-MD. Please see below his query for your reference. Thank you very much.

I have a team of undergraduate biomedical engineers hoping to use the DRV2605LEVM-MD to program 8 motors to activate at full strength in a custom sequence, with control over the delay and overlap when a given set of motors is active. After using the HCC, it doesn't seem that this level of functionality/control is possible directly with the Effect Sequence Playback to RTP. Do you know if it is possible through I2C or Arduino? Would you be willing to send some resources to us started on how to program the DRV2605LEVM-MD through those methods?

I was wondering if there were resources for getting started with this. For example, How to wire an external controller (Arduino) to the DRV2605LEVM-DM. I am not sure which port/pin locations are appropriate connections for SDA/SCL. Also are there any example lines of code that would illustrate the communication protocol from Arduino?

Best Regards,

Ray Vincent

over 3 years ago

0 Ray Vincent Aranzaso over 3 years ago

TI__Genius 15715 points

Hi,

Good Day. Is there any update on my post? Thank you very much.

Best Regards,

Ray Vincent

0 Carson Allen over 3 years ago in reply to Ray Vincent Aranzaso

TI__Genius 13610 points

Hello Ray,

I see your question and will respond in next 24 - 48 hours.

Best Regards,

Carson

0 Carson Allen over 3 years ago in reply to Carson Allen

TI__Genius 13610 points

Hello Ray,

In terms of getting started with programming I would refer to page 13 of the datasheet here for the EVM:

https://www.ti.com/lit/ug/slou400/slou400.pdf?ts=1632248337987&ref_url=https%253A%252F%252Fwww.ti.com%252Ftool%252FDRV2605LEVM-MD

You would have to use MSP430 that is already on the board and cant just try to have an external Arduino do the controlling.

In the datasheet two processes are outline to do the programming one with just using a micro-USB connect and the other J-TAG, would either of those options be feasible to you? It is a little more technical than an Arduino interface would be.

Best regards,

Carson

0 Ray Vincent Aranzaso over 3 years ago in reply to Carson Allen

TI__Genius 15715 points

Hi Carson,

Good Day. Please see below the response of our customer to your reply. Thank you very much.

We are certainly open to trying programming the MSP430 via usb. Would you be able to provide an example how we can turn on a motor at full strength for a specified duration, have a delay, and then turn on a second motor?

Best Regards,

Ray Vincent

0 Carson Allen over 3 years ago in reply to Ray Vincent Aranzaso

TI__Genius 13610 points

Hello Ray,

I am going to walk back my previous comments about having to have to use MSP430, I was getting confused with another device. I see for the DRV2605LEVM-MD you can put the board into mode 1 as seen here from datasheet

And then you could connect an SCL and SDA line from an Arduino on the pins I highlighted below.

From there you would be able to to do I2C protocol from the Arduino using that interface which would be simpler than using our code composer studio.

As for example I2C code that is not available you would just need to write I2C commands using guidance from DRV2605L datasheet starting on p.59

are you familiar with writing I2C script with arduino or just I2C in general?

0 Carson Allen over 3 years ago in reply to Carson Allen

TI__Genius 13610 points

0 Ray Vincent Aranzaso over 3 years ago in reply to Carson Allen

TI__Genius 15715 points

Hi Carson,

Good Day. Please see another query from the customer. Thank you very much.

I don’t have experience with I2C other than reading some blog posts related to arduino and adafruit’s breakout board for the drv2650l. Are there any examples that you can point me to specific for this device?

Also, one post of the TI website with a similar question mentioned that the client removed a couple resistors from the board to enable external communication with Arduino. Do you know if that is necessary, or putting into mode 1 and connecting the SDA/SCL pins will do the trick?

Best Regards,

Ray Vincent

0 Carson Allen over 3 years ago in reply to Ray Vincent Aranzaso

TI__Genius 13610 points

Hey Ray,

Let me ask around my team to see if I can find anything for you.

Carson

0 Ray Vincent Aranzaso over 3 years ago in reply to Carson Allen

TI__Genius 15715 points

Hi Carson,

Good Day. I would like to follow up about the latest query of the customer. Thank you very much.

Best Regards,

Ray Vincent

0 Carson Allen over 3 years ago in reply to Ray Vincent Aranzaso

TI__Genius 13610 points

Hello Ray,

Hello Ray the most we have to offer is either basing your C - code off what can be found in the downloadable firmware from the product page or becoming familiar with I2C via this doc and video:

https://www.ti.com/lit/an/slva704/slva704.pdf?ts=1632769825653&ref_url=https%253A%252F%252Fwww.google.com%252F

https://training.ti.com/ti-precision-labs-i2c-protocol-overview

and then using DRV2605L datasheet to know how to set registers to how you like:

https://www.ti.com/lit/ds/symlink/drv2605l.pdf?ts=1632769877840&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FDRV2605L

starting with reading initialization page on 59

Best Regards,

Carson

Motor drivers

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DRV2605LEVM-MD: Help with I2C programming or connecting to arduino