Takashi Matsuoka / MjGP2Y0E03

For Sharp GP2Y0E03(optical distance measurement sensor).

#include "mbed.h"
#include "MjGP2Y0E03.h"

using namespace matsujirushi;

Serial pc(USBTX, USBRX);
I2C i2c(dp5, dp27);
MjGP2Y0E03 distanceSensor(&i2c, 0x80);

int main()
{
    pc.baud(115200);
    i2c.frequency(400000);
    for(;;)
    {
        uint16_t distance = distanceSensor.getDistance();
        
        pc.printf("%4d [", distance);
        int i;
        for (i = 0; i < distance / 50; i++)
        {
            pc.putc('*');
        }
        for (; i < 4096 / 50; i++)
        {
            pc.putc(' ');
        }
        pc.puts("]\r\n");
        
        wait_ms(50);
    }
}

MjGP2Y0E03.cpp@0:33c4a1de6547, 2014-11-24 (annotated)

Committer:
matsujirushi
Date:
Mon Nov 24 07:51:53 2014 +0000
Revision:
0:33c4a1de6547
Child:
1:1832cde75561
Create MjGP2Y0E03 class.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
matsujirushi 0:33c4a1de6547 1 #include "MjGP2Y0E03.h"
matsujirushi 0:33c4a1de6547 2
matsujirushi 0:33c4a1de6547 3 namespace matsujirushi {
matsujirushi 0:33c4a1de6547 4
matsujirushi 0:33c4a1de6547 5 MjGP2Y0E03::MjGP2Y0E03(I2C* i2c, uint8_t address)
matsujirushi 0:33c4a1de6547 6 {
matsujirushi 0:33c4a1de6547 7 this->i2c = i2c;
matsujirushi 0:33c4a1de6547 8 this->address = address;
matsujirushi 0:33c4a1de6547 9 }
matsujirushi 0:33c4a1de6547 10
matsujirushi 0:33c4a1de6547 11 uint16_t MjGP2Y0E03::getDistance()
matsujirushi 0:33c4a1de6547 12 {
matsujirushi 0:33c4a1de6547 13 char regAddress = 0x5e;
matsujirushi 0:33c4a1de6547 14 i2c->write(address, &regAddress, 1, true);
matsujirushi 0:33c4a1de6547 15
matsujirushi 0:33c4a1de6547 16 char data[2];
matsujirushi 0:33c4a1de6547 17 i2c->read(address, data, sizeof (data));
matsujirushi 0:33c4a1de6547 18
matsujirushi 0:33c4a1de6547 19 return ((uint16_t)data[0] << 4) + (data[1] & 0x0f);
matsujirushi 0:33c4a1de6547 20 }
matsujirushi 0:33c4a1de6547 21
matsujirushi 0:33c4a1de6547 22 } // namespace matsujirushi
matsujirushi 0:33c4a1de6547 23