Now I'm using "3-Axis Digital Compass IC HMC5883L" to accomplish some target。
The maple CPU：STM32F103RBT6 I found that the i2c pins in STM32F103RBT6 is 29 and 30.
But in the wire library we can see the I2C's SDA and SCL is 20 and 21
So,what i want to know is how to write the code and can we use some way to let the I2C communicate successfully？
Many thanks...
