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{

I2C_USCI_write_byte(BH1750_addr, cmd);

}

unsigned int BH1750_read_word(void)

{

unsigned long value = 0x0000;

unsigned char bytes[2] = {0x00, 0x00};

I2C_USCI_read_word(0x11, bytes, 2);

value = ((bytes[1] << 8) | bytes[0]);

return value;

}

unsigned int get_lux_value(unsigned char mode, unsigned int delay_time)

{

unsigned long lux_value = 0x00;

unsigned char dly = 0x00;

unsigned char s = 0x08;

while(s)

{

BH1750_write(power_up);

BH1750_write(mode);

lux_value += BH1750_read_word();

for(dly = 0; dly < delay_time; dly += 1)

{

delay_ms(1);

}

BH1750_write(power_down);

s--;

}

lux_value >>= 3;

return ((unsigned int)lux_value);

}

main.c

#include <msp430.h>

#include "delay.h"

#include "HW_I2C.h"

#include "SW_I2C.h"

#include "PCF8574.h"

#include "lcd.h"

#include "BH1750.h"

void GPIO_graceInit(void);

void BCSplus_graceInit(void);

void USCI_B0_graceInit(void);

void System_graceInit(void);

void WDTplus_graceInit(void);

void lcd_print(unsigned char x_pos, unsigned char y_pos, unsigned int value);

Brand	Texas Instruments
Model	MSP430
Category	Microcontrollers
Language	English

Texas Instruments MSP430 User Manual

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