A example project of Longan Nano using USB CDC, SPI and BMP280 temperature sensor

Products & Technology
#1

this project use SPI to get a temperature value from a BMP280 temperature module,
and then use USB CDC to sent it to a host (PC or Android)

chip:GD32VF103CBT6 ( or  GD32VF103VBT6)
board:sipeed Longan Nano (you can also use GD32VF103V-EVAL-V1.0 board which has GD32VF103VBT6 on it.
the linker is same. but the pinouts has a little difference)