DRV8835 reverse direction speed values with DRV8835MotorShield

Support Motor controllers/drivers and motors
1

im using the DRV8835MotorShield library GitHub - pololu/drv8835-motor-shield: Arduino library for the Pololu DRV8835 Dual Motor Driver Shield for Arduino http://www.pololu.com/product/2511 with a DRV8835 in in/in mode on an Adafruit feather esp8266. I used my own pin mapping instead of the default pin maps.

The issue I am having is when setting positive speeds everything works fine. A speed of 0 stops the motor, a speed of 400 is full speed.
When I want to reverse the motor using negative speeds it seems that -1 is full speed and -400 is stopped. Why is it flipped like this and how can i correct this. I would expect -400 to be full speed in reverse.

2

Hello.

We have not tried our DRV8835 Dual Motor Driver Shield for Arduino or Arduino library with the Adafruit Feather HUZZAH ESP8266. However, please note that our library does not support IN/IN mode. So, if you want to use IN/IN mode and have control over the speed of the motors, then you will need to write your own code for handling the 4 PWM signals.

Is there a particular reason you want to use IN/IN mode?

Brandon