BAFANG M215 (BBS01 CAN bus), M315 (BBS02 CAN bus), M510, M560, M820, CR-A101 FOC Open Source EBiCS Firmware for GD32F303 processors

[Waynemarlow]

The M560 is a powerful motor on single track steep trails and rarely are you able to use its full power other than on fire roads and road.

 

[artyy]

Today, i rode my bike about 3 h( it was bikepark like terrain) and twice happened the situation on which the motor was acting like i was using throttle but I did not. I had to restart the motor to stop that action. Once it occured after uphill and once after downhill. Besides it worked flawlessly.

 

[stancecoke]

I had to restart the motor to stop that action.

Thank you for the feedback. Which version did you use? Can you look at the calories field, before switching off the system next time?

 

[jaxkubqq]

In my case, the torque sensor drift went up to over 900, though that rarely happened. Right now, I've set the pedal threshold to 850

 

[stancecoke]

Hm, I think we should add a recalibration at runtime, if the idle value (cadence zero and PWM off for example) is not plausible.

We have a double check in resetting the torque counter. The torque has to be greater than the threshold and the PAS counter has to be smaller than the PAS timeout.

    if(MS.torque_on_crank>tq_threshold&&PAS_counter<MP.PAS_timeout)torque_counter=0;//reset counter, if pressure on pedal and pedals rotating

BAFANG_GD32F303RCT6/src/main.c at 2053651d9360f0139d9b8220f6045222727b7995 · EBiCS/BAFANG_GD32F303RCT6

Firmware for Bafang E-Bike controllers with GD32F303 processors - EBiCS/BAFANG_GD32F303RCT6

github.com

So if you stop pedaling, the assistance will stop also. But especially when riding off-road, it's difficult to keep the pedals completely still enough to prevent a PAS pulse from being triggered. So the assistance is not switched off, if the idle signal is drifting above the threshold.

 

[stancecoke]

Hm, I think we should add a recalibration at runtime

I've added that feature to the v0.0084 now. The new calibration is executed, if the cadence is zero, the PWM is switched off and the idle value is more than 40mV off the first calibration at startup. Maybe the calibration is triggered, if you rest your leg on the pedal at a red traffic light, you have to try it, I have no M560 on my test bike at the moment. You can check the recent torque value in the calories field
https://github.com/EBiCS/BAFANG_GD3...0/latest_beta/EBiCS_for_M560_BL38_v0.0084.bin

 

[artyy]

Thank you for the feedback. Which version did you use? Can you look at the calories field, before switching off the system next time?

V0.0083
Question: dose this soft work with other display than dpc 245 because I want to change for dpc080? I bought dz41 and motor makes klicking sounds ...

 

[stancecoke]

bought dz41 and motor makes klicking sounds ...

There should be no impact of the used display on the motor behaviour. As long as the display uses the known CAN protocol.