Adafruit I2C connection have a conflict on RPi.GPIO mode set

[roxanaluca]

Hi,

I have connected PCA9685 and Arducam Multi Camera Adapter on Raspberry Pi 3B+. I am using bus 3 for the PCA9685 connection and I have GPIO 26 for SCL and GPIO 16 for SDA. The problem is that when I put Arducam Multi-Camera adapter and the I2C Adafruit together there is a issue regarding on the following line gp.setmode(gp.BOARD) ValueError: A different mode has already been set Could you tell me please how to solve this error?

I look forward to your reply. Many thanks,

[makermelissa]

Could you please provide the entire error message with line numbers? I'm not seeing gp.setmode(gp.BOARD) in the source code for this library.

[roxanaluca]

Traceback (most recent call last): File "main.py", line 186, in gp.setmode(gp.BOARD) ValueError: A different mode has already been set!

import RPi.GPIO as gp
from adafruit_extended_bus import ExtendedI2C as I2C
from adafruit_servokit import ServoKit
class MotorDriver():
    def __init__(self):
        i2c = I2C(3)
        kit = ServoKit(channels=16, i2c=i2c)
        if kit.servo[1].angle < 0 or kit.servo[1].angle > 180:
            kit.servo[1].angle = 30
if __name__=="__main__":
    gp.setwarnings(False)
    gp.setmode(gp.BOARD)
    gp.setup(7,gp.OUT)
    gp.setup(11,gp.OUT)
    gp.setup(12,gp.OUT)

[ladyada]

you probably cannot mix rpi.gpio with circuitpython

On Wed, May 6, 2020 at 12:07 PM Maria Roxana Luca notifications@github.com wrote:

Traceback (most recent call last): File "main.py", line 186, in gp.setmode(gp.BOARD) ValueError: A different mode has already been set!

import RPi.GPIO as gp from adafruit_extended_bus import ExtendedI2C as I2C from adafruit_servokit import ServoKit class MotorDriver(): def init(self): i2c = I2C(3) kit = ServoKit(channels=16, i2c=i2c) if kit.servo[1].angle < 0 or kit.servo[1].angle > 180: kit.servo[1].angle = 30 if name=="main": gp.setwarnings(False) gp.setmode(gp.BOARD) gp.setup(7,gp.OUT) gp.setup(11,gp.OUT) gp.setup(12,gp.OUT)

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[makermelissa]

Yeah, mixing them isn't a good idea. Blinka makes use of RPi.GPIO under the hood for the Raspberry Pis and it's not liking the manual overriding.

[roxanaluca]

Ok.. but I had to set pin 7,11,12 to False and True. Could you tell me how can I use them?

[makermelissa]

Yes. You'll want to use digitalio for this. See https://learn.adafruit.com/circuitpython-digital-inputs-and-outputs/digital-outputs for more info.