MicroPython Forum (Archive)

Hello, I am little confused about how I2c works in micropython. from machine import Pin, I2C i2c = I2C(scl= ' PB8', sda = 'PB9') buf_write = bytearray(5) buf_read = bytearray(5) for x in range(5): buf_write[x] = 1 #Writing buffer to memory address starting from 1 of slave at address 57 i2c.writeto_m...

Hey, I have tried your method (below mention ) before and bumped me with same error of " No such I2C instance" But I solved the above issue by importing I2C from machine. from mpu9250 import MPU9250 from machine import I2C x = I2C(1, I2C.MASTER) imu = MPU9250 (x) And the above code work properly. St...

Hey, I am interfacing IMU10DOF sensor ( Mpu9250 at addr 0x68 and BMP280 at addr 0x77) with STM32F4 disc board. I referred this module: https://github.com/micropython-IMU/micropython-mpu9x50 For using MPU9250 we need to create instance of I2C, which i created below. from pyb import I2C from mpu9250 i...

Hey,

I have MPU-9250 at addr 0x68 and BMP280 at addr 0x77 (119) in my IMU10DOF module.

x = I2C(1, I2C.MASTER, baudrate = 115200)
imu = MPU9250(x)

it gives me error of Invalid I2C instance.
And from terminal if use x.scan it give me address of [104,119].


How to solve this issue ?

Hello,

I have just started using this MPU9250 module from Peter Hinch. I have connected MPU9250 to I2C interface and used i2c.scan() it gives me [104, 119].

I am facing problem in the following line.

imu = MPU9250('1')

It throws an error of I2C(1) doesn't exist. But i can use I2C(1).

Hello, I am currently interfacing color sensor with STM32Fdisc board. and below i have given the code. It throws up an ""TypeError: can't convert list to int"" . # main.py -- put your code here! # /**I2C1 GPIO Configuration # PB8 ------> I2C1_SCL # PB9 ------> I2C1_SDA import pyb from pyb import I2C...

it was running in past. But i tried it now and its not working. So definitely it should be a hardware problem ?

Hello, I am unable to display data on LCD. Below is my code. Can anyone help me out. import uasyncio as asyncio import utime as time from alcd import LCD, PINLIST lcd = LCD(PINLIST, cols = 16) async def lcd_task(): for secs in range(20, -1, -1): lcd[0] = 'Edutech Learning' lcd[1] = "Solution" await ...

Also there is some issues with LCD example. I have created this example before 2-3 months. But its not working now. Did any library got updated. The below code dont give me error, but it dont give me output either. import uasyncio as asyncio import utime as time from alcd import LCD, PINLIST lcd = L...

Here is my simple example to blink LED, and i guess it was working properly previously but its not working now. import pyb from pyb import Pin, delay #Initalising LED Pins led1 = pyb.Pin('PE8', Pin.OUT, Pin.PULL_DOWN) #Blinking lEd while (True): led1.low() #Turning LED ON pyb.delay(5000) led1.high()...