i try use pin4 pin5 or others pins ,they work normally
and i try to use arduino i2c pin 18 19 work normally,too
here is my codes:
Code: Select all
import utime
from machine import Pin, SoftI2C
i2c = SoftI2C(scl=Pin(19), sda=Pin(18))
print(i2c.scan())
can't found i2c address
so why can't i use pin 18 19 as i2c pins?can i solve this problem by making fireware by myself? thanks a lot!!!