Commit e391c1bc authored by Daniel Friesel's avatar Daniel Friesel
Browse files

Add preliminary version of HDC1080 driver (not working reliably yet)

parent 8e0cde61

Makefile

+5 −0
Original line number Diff line number Diff line
@@ -63,6 +63,11 @@ ifneq ($(findstring max44009,${drivers}), ) 
	COMMON_FLAGS += -DDRIVER_MAX44009

endif



ifneq ($(findstring hdc1080,${drivers}), )

	CXX_TARGETS += src/driver/hdc1080.cc

	COMMON_FLAGS += -DDRIVER_HDC1080

endif



ifneq ($(findstring mmsimple,${drivers}), )

	CXX_TARGETS += src/driver/mmsimple.cc

	COMMON_FLAGS += -DDRIVER_MMSIMPLE

include/driver/hdc1080.h

0 → 100644
+22 −0
Original line number Diff line number Diff line 
#ifndef HDC1080_H

#define HDC1080_H



class HDC1080 {

	private:

		HDC1080(const HDC1080 &copy);

		unsigned char const address = 0x40;

		unsigned char txbuf[3];

		unsigned char rxbuf[2];



	public:

		HDC1080() {}



		float getTemp();

		float getRH();

		unsigned int getManufacturerID();

		void init();

};



extern HDC1080 hdc1080;



#endif

src/app/i2cdetect/main.cc

+13 −0
Original line number Diff line number Diff line
@@ -25,6 +25,9 @@ 
#ifdef DRIVER_MAX44009

#include "driver/max44009.h"

#endif

#ifdef DRIVER_HDC1080

#include "driver/hdc1080.h"

#endif

#ifdef DRIVER_MMSIMPLE

#include "driver/mmsimple.h"

#endif
@@ -81,6 +84,10 @@ void loop(void) 
#ifdef DRIVER_CCS811

	kout << "CCS811 status is " << ccs811.check() << endl;

#endif

#ifdef DRIVER_HDC1080

	kout << "HDC1080 temperature " << hdc1080.getTemp() << " degC" << endl;

	kout << "HDC1080 humidity " << hdc1080.getRH() << " %H" << endl;

#endif

#ifdef DRIVER_MAX44009

	kout.printf_float(max44009.getLux());

	kout << endl;
@@ -118,6 +125,12 @@ int main(void) 
#ifdef DRIVER_CCS811

	ccs811.init();

#endif

#ifdef DRIVER_HDC1080

	hdc1080.init();

	if (hdc1080.getManufacturerID() != 0x5449) {

		kout << "[!] invalid HDC1080 manufacturer ID: " << hex << hdc1080.getManufacturerID() << endl;

	}

#endif



	for (unsigned char i = 0; i < sizeof(i2c_status)/sizeof(unsigned int); i++) {

		i2c_status[i] = 0;

src/driver/hdc1080.cc

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+51 −0
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#include "driver/hdc1080.h"

#include "arch.h"

#if defined(MULTIPASS_ARCH_HAS_I2C) && !defined(DRIVER_SOFTI2C)

#include "driver/i2c.h"

#else

#include "driver/soft_i2c.h"

#endif



float HDC1080::getTemp()

{

	txbuf[0] = 0x00;



	i2c.xmit(address, 1, txbuf, 0, rxbuf);



	arch.delay_ms(10);



	i2c.xmit(address, 0, txbuf, 2, rxbuf);



	return (((unsigned int)rxbuf[0] << 8) | rxbuf[1]) * .00251770019531250000 - 40.;

}



float HDC1080::getRH()

{

	txbuf[0] = 0x01;



	i2c.xmit(address, 1, txbuf, 0, rxbuf);



	arch.delay_ms(10);



	i2c.xmit(address, 0, txbuf, 2, rxbuf);



	return (((unsigned int)rxbuf[0] << 8) | rxbuf[1]) * .00152587890625000000;

}



unsigned int HDC1080::getManufacturerID()

{

	txbuf[0] = 0xfe;

	i2c.xmit(address, 1, txbuf, 2, rxbuf);

	return (unsigned int)rxbuf[0] << 8 | rxbuf[1];

}



void HDC1080::init()

{

	txbuf[0] = 0x02;

	txbuf[1] = 0x08;

	txbuf[2] = 0x00;

	i2c.xmit(address, 3, txbuf, 0, rxbuf);

	arch.delay_ms(15);

}



HDC1080 hdc1080;