LPS25H library
Fork of LPS25H by
LPS25H.cpp@1:2a808d2d05ff, 2016-10-06 (annotated)
- Committer:
- bclaus
- Date:
- Thu Oct 06 23:28:55 2016 +0000
- Revision:
- 1:2a808d2d05ff
- Parent:
- 0:0d2babe81a04
functional;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
yasuyuki | 0:0d2babe81a04 | 1 | //********************** |
yasuyuki | 0:0d2babe81a04 | 2 | // LPS25H.cpp for mbed |
yasuyuki | 0:0d2babe81a04 | 3 | // |
yasuyuki | 0:0d2babe81a04 | 4 | // LPS25H lps25h(P0_5,P0_4); |
yasuyuki | 0:0d2babe81a04 | 5 | // or |
yasuyuki | 0:0d2babe81a04 | 6 | // I2C i2c(P0_5,P0_4); |
yasuyuki | 0:0d2babe81a04 | 7 | // LPS25H lps25h(i2c); |
yasuyuki | 0:0d2babe81a04 | 8 | // |
yasuyuki | 0:0d2babe81a04 | 9 | // (C)Copyright 2014 All rights reserved by Y.Onodera |
yasuyuki | 0:0d2babe81a04 | 10 | // http://einstlab.web.fc2.com |
yasuyuki | 0:0d2babe81a04 | 11 | //********************** |
yasuyuki | 0:0d2babe81a04 | 12 | |
yasuyuki | 0:0d2babe81a04 | 13 | #include "mbed.h" |
yasuyuki | 0:0d2babe81a04 | 14 | #include "LPS25H.h" |
yasuyuki | 0:0d2babe81a04 | 15 | |
yasuyuki | 0:0d2babe81a04 | 16 | LPS25H::LPS25H (PinName sda, PinName scl) : _i2c(sda, scl) { |
yasuyuki | 0:0d2babe81a04 | 17 | init(); |
yasuyuki | 0:0d2babe81a04 | 18 | } |
yasuyuki | 0:0d2babe81a04 | 19 | LPS25H::LPS25H (I2C& p_i2c) : _i2c(p_i2c) { |
yasuyuki | 0:0d2babe81a04 | 20 | init(); |
yasuyuki | 0:0d2babe81a04 | 21 | } |
yasuyuki | 0:0d2babe81a04 | 22 | |
yasuyuki | 0:0d2babe81a04 | 23 | void LPS25H::put(unsigned char a, unsigned char b) |
yasuyuki | 0:0d2babe81a04 | 24 | { |
yasuyuki | 0:0d2babe81a04 | 25 | buf[0]=a; |
yasuyuki | 0:0d2babe81a04 | 26 | buf[1]=b; |
yasuyuki | 0:0d2babe81a04 | 27 | _i2c.write(LPS25H_ADDR, buf, 2); |
yasuyuki | 0:0d2babe81a04 | 28 | } |
yasuyuki | 0:0d2babe81a04 | 29 | |
yasuyuki | 0:0d2babe81a04 | 30 | |
yasuyuki | 0:0d2babe81a04 | 31 | void LPS25H::get(unsigned char a) |
yasuyuki | 0:0d2babe81a04 | 32 | { |
yasuyuki | 0:0d2babe81a04 | 33 | buf[0] = a; |
yasuyuki | 0:0d2babe81a04 | 34 | _i2c.write(LPS25H_ADDR, buf, 1, true); // no stop, repeated |
yasuyuki | 0:0d2babe81a04 | 35 | _i2c.read( LPS25H_ADDR, buf, 1); |
yasuyuki | 0:0d2babe81a04 | 36 | |
yasuyuki | 0:0d2babe81a04 | 37 | } |
yasuyuki | 0:0d2babe81a04 | 38 | |
bclaus | 1:2a808d2d05ff | 39 | void LPS25H::readPres() |
yasuyuki | 0:0d2babe81a04 | 40 | { |
yasuyuki | 0:0d2babe81a04 | 41 | |
yasuyuki | 0:0d2babe81a04 | 42 | // XL first and H last |
yasuyuki | 0:0d2babe81a04 | 43 | // get press_xl |
yasuyuki | 0:0d2babe81a04 | 44 | get(LPS25H_PRESS_POUT_XL_REH); |
yasuyuki | 0:0d2babe81a04 | 45 | press.byte.LB=buf[0]; |
yasuyuki | 0:0d2babe81a04 | 46 | // get tpress_low |
yasuyuki | 0:0d2babe81a04 | 47 | get(LPS25H_PRESS_OUT_L); |
yasuyuki | 0:0d2babe81a04 | 48 | press.byte.HB=buf[0]; |
yasuyuki | 0:0d2babe81a04 | 49 | // get press_high |
yasuyuki | 0:0d2babe81a04 | 50 | get(LPS25H_PRESS_OUT_H); |
yasuyuki | 0:0d2babe81a04 | 51 | press.byte.UB=buf[0]; |
bclaus | 1:2a808d2d05ff | 52 | presPa = press.Val/40.96; |
yasuyuki | 0:0d2babe81a04 | 53 | |
yasuyuki | 0:0d2babe81a04 | 54 | // hPa = press.Val / 4096 |
yasuyuki | 0:0d2babe81a04 | 55 | // Pa = press.Val / 40.96 |
yasuyuki | 0:0d2babe81a04 | 56 | } |
yasuyuki | 0:0d2babe81a04 | 57 | |
yasuyuki | 0:0d2babe81a04 | 58 | |
bclaus | 1:2a808d2d05ff | 59 | void LPS25H::temperature() |
yasuyuki | 0:0d2babe81a04 | 60 | { |
yasuyuki | 0:0d2babe81a04 | 61 | |
yasuyuki | 0:0d2babe81a04 | 62 | // L first and H last |
yasuyuki | 0:0d2babe81a04 | 63 | // get tpress_low |
yasuyuki | 0:0d2babe81a04 | 64 | get(LPS25H_TEMP_OUT_L); |
yasuyuki | 0:0d2babe81a04 | 65 | temp.byte.LB=buf[0]; |
yasuyuki | 0:0d2babe81a04 | 66 | // get press_high |
yasuyuki | 0:0d2babe81a04 | 67 | get(LPS25H_TEMP_OUT_H); |
yasuyuki | 0:0d2babe81a04 | 68 | temp.byte.HB=buf[0]; |
bclaus | 1:2a808d2d05ff | 69 | tempC = 42.5 + temp.S/480; |
yasuyuki | 0:0d2babe81a04 | 70 | |
yasuyuki | 0:0d2babe81a04 | 71 | // C = 42.5 + temp.S / 480 |
yasuyuki | 0:0d2babe81a04 | 72 | // range:0 to 80C |
yasuyuki | 0:0d2babe81a04 | 73 | // accuracy:+-2C |
yasuyuki | 0:0d2babe81a04 | 74 | } |
yasuyuki | 0:0d2babe81a04 | 75 | |
yasuyuki | 0:0d2babe81a04 | 76 | |
yasuyuki | 0:0d2babe81a04 | 77 | void LPS25H::init() |
yasuyuki | 0:0d2babe81a04 | 78 | { |
yasuyuki | 0:0d2babe81a04 | 79 | // Power ON Cycle=1Hz |
yasuyuki | 0:0d2babe81a04 | 80 | put(LPS25H_CTRL_REG1, 0x90); |
yasuyuki | 0:0d2babe81a04 | 81 | } |
yasuyuki | 0:0d2babe81a04 | 82 | |
yasuyuki | 0:0d2babe81a04 | 83 |