Prop Shield Altimeter

[Citabria]

I see a function in the NXPMotionSense library to read altitude from the pressure sensor, but it's private:

private:
	void update();
	bool FXOS8700_begin();
	bool FXAS21002_begin();
	bool MPL3115_begin();
	bool FXOS8700_read(int16_t *data);
	bool FXAS21002_read(int16_t *data);
	bool MPL3115_read(int32_t *altitude, int16_t *temperature);
...

So, how can I read the altitude in my sketch?

 

[Citabria]

I found two workarounds. First, just

#define private public

which is naughty.

Second, make local copies of the functions

bool MPL3115_read(int32_t *altitude, int16_t *temperature)
static bool read_regs(uint8_t i2c, uint8_t addr, uint8_t *data, uint8_t num)
static bool read_regs(uint8_t i2c, uint8_t *data, uint8_t num)

which is a last resort.

Paul, may I ask you to make it public?

 

[Citabria]

I see now someone else has branched the library and made the changes:
https://github.com/mjs513/NXPMotionSense

Thanks!

 

[mjs513]

I see now someone else has branched the library and made the changes:
https://github.com/mjs513/NXPMotionSense

Thanks!

There is an open PR for that as well.