Other Parts Discussed in Thread: MSP430G2744, , DRV8886AT
Hey team,
I am working on a motor drive demo board and am using an MSP430G2755 (or MSP430G2744 if that is capable enough) to interface with 6 DRV886AT to control them simultaneously.
What I would like to find out now is how we would generate the STEP signals from the MSP430 for the DRV8886AT, and if this particular 430 would be able to generate 6 independent STEP acceleration and deceleration curves to drives the 6 stepper motors? After chatting with the apps engineer from the Motor drive team they said it may be difficult to do and suggested I check with your team to make sure we have the right MCU paired up for this task.
Originally we only had 6 step and 6 DIR signals going to the motor drivers, but we might also have 6 additional signals for torque and 6 signals to control the ref voltage so we may need 24 GPIOs, and 6 of them need to be able to be tied directly to the timer to create the timer related step output – I think the MSP430G2755 should be able to handle this, but wanted to confirm.
I would also need to set up the MSP430 to receive a SPI into - If there's an example of the best way to wire that on this MSP430 that would be helpful, I think at the moment the signals required are occupied so I'd have to move some GPIOs around.
Please take a look at the design to see if things are wired appropriately. I’d like to get a proper schematic review as well, the Altium design files can be found uploaded to the box here:
Thank you For your help with this!
best regards,
Saqib Mohammad
