Posts made by Costas

Same results.
from machine import I2C, Pin
i2c = I2C(scl=Pin(22), sda=Pin(21), freq=100000)
i2c.scan()
[52, 53, 56, 81, 104]

Trying to get I2C to work on the new firmware. I have M5's SGP30 sensor. MicroPython is not detecting anything plugged in. Guidance?

from machine import SoftI2C, Pin
i2c = SoftI2C(sda=machine.Pin(21),scl=machine.Pin(22),freq=100000)
devices = i2c.scan()
devices = [52, 53, 56, 81, 104], the SGP30 should be on 58, right?

Cannot import and begin m5 and also read the SD card, causes a reset with the following error:

assert failed: dma_chan_free spi_common.c:321 (spi_dma_chan_enabled & BIT(dma_chan))

Code:
import m5
from m5 import *
m5.begin()
from machine import SDCard
from machine import Pin
import os
try:
sd = SDCard(slot=3, miso=Pin(38), mosi=Pin(23), sck=Pin(18), cs=Pin(4))
sd.info()
os.mount(sd, '/sd')
print("SD card mounted at "/sd"")
except (KeyboardInterrupt, Exception) as e:
print('SD mount caught exception {} {}'.format(type(e).name, e))
pass