HMC5883L磁力计，用于测量三个轴的磁场，运用I2C总线通过外部输入中断触发去读取数据，并将结果通过串口传到上位机-HMC5883L magnetometer for measuring a three-axis magnetic field, the use of the I2C bus interrupt is triggered by an external input to read the data, and the re

三轴磁力计—HMC5883L+STM32(Three axis magnetometer HMC5883L read magnetometer data with STM32, mainly used in the four rotor above)