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tstellanova/pixhawk_fc_i2c_port_labels.md

Last active March 14, 2020 15:40
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Pixhawk flight controller i2c bus labels
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pixhawk_fc_i2c_port_labels.md

The labels for the ports used on Pixhawk are arbitrary and based on historical context

  • The internal I2C bus is bus 0 in ArduPilot (I2C3 in hardware)

  • Port label I2CA is bus 3 in ArduPilot (I2C4 in hardware)

  • Port label I2CB is bus 2 in ArduPilot (I2C2 in hardware)

  • Port label GPS is bus 1 in ArduPilot (I2C1 in hardware)

  • Durandal has a port labeled "I2C A", corresponding to I2C4 in hardware, which corresponds to PF14/PF15 on stm32h7

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