SHT31-DIS Library
Dependents: HYBRYD2018_IZU_ROCKET
SHT3x.cpp@3:16d45bca7580, 2018-05-02 (annotated)
- Committer:
- zebrin1422
- Date:
- Wed May 02 18:16:26 2018 +0000
- Revision:
- 3:16d45bca7580
- Parent:
- 2:e87793cb9185
- Child:
- 4:9a5de0485008
SHT3x library
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
zebrin1422 | 2:e87793cb9185 | 1 | #include"mbed.h" |
zebrin1422 | 2:e87793cb9185 | 2 | #include"SHT3x.h" |
zebrin1422 | 2:e87793cb9185 | 3 | |
zebrin1422 | 2:e87793cb9185 | 4 | //Serial pc(USBTX, USBRX); //tx, rx |
zebrin1422 | 2:e87793cb9185 | 5 | |
zebrin1422 | 2:e87793cb9185 | 6 | mySHT3x::mySHT3x(I2C &i2cBus, AD0 celect){ |
zebrin1422 | 2:e87793cb9185 | 7 | i2c = &i2cBus; |
zebrin1422 | 2:e87793cb9185 | 8 | if(celect == AD0_HIGH) _addr = SLV_ADDR_HIGH; |
zebrin1422 | 2:e87793cb9185 | 9 | else _addr = SLV_ADDR_LOW; |
zebrin1422 | 3:16d45bca7580 | 10 | SLV_WRITE_SHT = _addr; |
zebrin1422 | 3:16d45bca7580 | 11 | SLV_READ_SHT = _addr | 1; |
zebrin1422 | 2:e87793cb9185 | 12 | i2c->frequency(400000); |
zebrin1422 | 2:e87793cb9185 | 13 | } |
zebrin1422 | 2:e87793cb9185 | 14 | /********** |
zebrin1422 | 2:e87793cb9185 | 15 | ヒーターをセットする |
zebrin1422 | 2:e87793cb9185 | 16 | i=0ならば、ヒーターOFF |
zebrin1422 | 2:e87793cb9185 | 17 | i=1ならば、ヒーターON |
zebrin1422 | 2:e87793cb9185 | 18 | セット直後は5msくらい待ってあげる |
zebrin1422 | 2:e87793cb9185 | 19 | **********/ |
zebrin1422 | 2:e87793cb9185 | 20 | |
zebrin1422 | 2:e87793cb9185 | 21 | void mySHT3x::heater_set(int i) |
zebrin1422 | 2:e87793cb9185 | 22 | { |
zebrin1422 | 2:e87793cb9185 | 23 | char cmd[2][2]; |
zebrin1422 | 2:e87793cb9185 | 24 | cmd[0][0] = 0x30;cmd[0][1] = 0x66; |
zebrin1422 | 2:e87793cb9185 | 25 | cmd[1][0] = 0x30;cmd[1][1] = 0x6D; |
zebrin1422 | 2:e87793cb9185 | 26 | |
zebrin1422 | 3:16d45bca7580 | 27 | i2c->write(SLV_WRITE_SHT, cmd[i], 3); |
zebrin1422 | 2:e87793cb9185 | 28 | } |
zebrin1422 | 2:e87793cb9185 | 29 | /************** |
zebrin1422 | 2:e87793cb9185 | 30 | 温度、湿度を取得する |
zebrin1422 | 2:e87793cb9185 | 31 | このセンサーは温度、または湿度のデータを個別で送ることはできず |
zebrin1422 | 2:e87793cb9185 | 32 | 同時に送るので、一応個別に返す関数を作ったが、 |
zebrin1422 | 2:e87793cb9185 | 33 | なるべくこっちでまとめて値を取得した方がいいのかも |
zebrin1422 | 2:e87793cb9185 | 34 | **************/ |
zebrin1422 | 2:e87793cb9185 | 35 | void mySHT3x::get_temp_hum(float *temp, float *hum) |
zebrin1422 | 2:e87793cb9185 | 36 | { |
zebrin1422 | 2:e87793cb9185 | 37 | char cmd[2] = {0x24,0x00}; |
zebrin1422 | 2:e87793cb9185 | 38 | char buff[6]; |
zebrin1422 | 2:e87793cb9185 | 39 | unsigned int val[4]; |
zebrin1422 | 2:e87793cb9185 | 40 | |
zebrin1422 | 3:16d45bca7580 | 41 | i2c->write(SLV_WRITE_SHT, cmd, 2); |
zebrin1422 | 2:e87793cb9185 | 42 | wait_ms(30); |
zebrin1422 | 3:16d45bca7580 | 43 | i2c->read(SLV_READ_SHT, buff, 6); |
zebrin1422 | 2:e87793cb9185 | 44 | |
zebrin1422 | 2:e87793cb9185 | 45 | val[0] = (unsigned int)buff[0]<<8; |
zebrin1422 | 2:e87793cb9185 | 46 | val[1] = (unsigned int)buff[1]; |
zebrin1422 | 2:e87793cb9185 | 47 | val[2] = (unsigned int)buff[3]<<8; |
zebrin1422 | 2:e87793cb9185 | 48 | val[3] = (unsigned int)buff[4]; |
zebrin1422 | 2:e87793cb9185 | 49 | |
zebrin1422 | 2:e87793cb9185 | 50 | *temp = (float)(val[0] | val[1]); |
zebrin1422 | 2:e87793cb9185 | 51 | *hum = (float)(val[2] | val[3]); |
zebrin1422 | 2:e87793cb9185 | 52 | |
zebrin1422 | 2:e87793cb9185 | 53 | *temp = *temp*175.0/65535-45.0; |
zebrin1422 | 2:e87793cb9185 | 54 | *hum = *hum*100.0/65535; |
zebrin1422 | 2:e87793cb9185 | 55 | } |
zebrin1422 | 2:e87793cb9185 | 56 | /*********** |
zebrin1422 | 2:e87793cb9185 | 57 | 温度を取得 |
zebrin1422 | 2:e87793cb9185 | 58 | 湿度が絶対にいらない場合はこっちで |
zebrin1422 | 2:e87793cb9185 | 59 | ************/ |
zebrin1422 | 2:e87793cb9185 | 60 | float mySHT3x::get_temp() |
zebrin1422 | 2:e87793cb9185 | 61 | { |
zebrin1422 | 2:e87793cb9185 | 62 | char cmd[2] = {0x24,0x00}; |
zebrin1422 | 2:e87793cb9185 | 63 | char buff[6]; |
zebrin1422 | 2:e87793cb9185 | 64 | unsigned int val[2]; |
zebrin1422 | 2:e87793cb9185 | 65 | float temp; |
zebrin1422 | 2:e87793cb9185 | 66 | |
zebrin1422 | 3:16d45bca7580 | 67 | i2c->write(SLV_WRITE_SHT, cmd, 2); |
zebrin1422 | 2:e87793cb9185 | 68 | wait_ms(30); |
zebrin1422 | 3:16d45bca7580 | 69 | i2c->read(SLV_READ_SHT, buff, 6); |
zebrin1422 | 2:e87793cb9185 | 70 | |
zebrin1422 | 2:e87793cb9185 | 71 | val[0] = (unsigned int)buff[0]<<8; |
zebrin1422 | 2:e87793cb9185 | 72 | val[1] = (unsigned int)buff[1]; |
zebrin1422 | 2:e87793cb9185 | 73 | |
zebrin1422 | 2:e87793cb9185 | 74 | temp = (float)(val[0] | val[1]); |
zebrin1422 | 2:e87793cb9185 | 75 | temp = temp*175.0/65535-45.0; |
zebrin1422 | 2:e87793cb9185 | 76 | |
zebrin1422 | 2:e87793cb9185 | 77 | return temp; |
zebrin1422 | 2:e87793cb9185 | 78 | } |
zebrin1422 | 2:e87793cb9185 | 79 | /*************** |
zebrin1422 | 2:e87793cb9185 | 80 | 湿度を取得 |
zebrin1422 | 2:e87793cb9185 | 81 | 温度が絶対にいらない場合はこちらで |
zebrin1422 | 2:e87793cb9185 | 82 | *****************/ |
zebrin1422 | 2:e87793cb9185 | 83 | float mySHT3x::get_hum() |
zebrin1422 | 2:e87793cb9185 | 84 | { |
zebrin1422 | 2:e87793cb9185 | 85 | char cmd[2] = {0x24,0x00}; |
zebrin1422 | 2:e87793cb9185 | 86 | char buff[6]; |
zebrin1422 | 2:e87793cb9185 | 87 | unsigned int val[2]; |
zebrin1422 | 2:e87793cb9185 | 88 | float hum; |
zebrin1422 | 2:e87793cb9185 | 89 | |
zebrin1422 | 3:16d45bca7580 | 90 | i2c->write(SLV_WRITE_SHT, cmd, 2); |
zebrin1422 | 2:e87793cb9185 | 91 | wait_ms(30); |
zebrin1422 | 3:16d45bca7580 | 92 | i2c->read(SLV_READ_SHT, buff, 6); |
zebrin1422 | 2:e87793cb9185 | 93 | |
zebrin1422 | 2:e87793cb9185 | 94 | val[0] = (unsigned int)buff[3]<<8; |
zebrin1422 | 2:e87793cb9185 | 95 | val[1] = (unsigned int)buff[4]; |
zebrin1422 | 2:e87793cb9185 | 96 | |
zebrin1422 | 2:e87793cb9185 | 97 | hum = (float)(val[0] | val[1]); |
zebrin1422 | 2:e87793cb9185 | 98 | hum = hum*100.0/65535; |
zebrin1422 | 2:e87793cb9185 | 99 | |
zebrin1422 | 2:e87793cb9185 | 100 | return hum; |
zebrin1422 | 2:e87793cb9185 | 101 | } |
zebrin1422 | 2:e87793cb9185 | 102 | /************* |
zebrin1422 | 2:e87793cb9185 | 103 | センサーの現在の状態を取得 |
zebrin1422 | 2:e87793cb9185 | 104 | 何bit目が何を表しているのかは |
zebrin1422 | 2:e87793cb9185 | 105 | データシートを参照 |
zebrin1422 | 2:e87793cb9185 | 106 | *************/ |
zebrin1422 | 2:e87793cb9185 | 107 | int mySHT3x::get_state() |
zebrin1422 | 2:e87793cb9185 | 108 | { |
zebrin1422 | 2:e87793cb9185 | 109 | char cmd[2] = {0xF3, 0x2D}; |
zebrin1422 | 2:e87793cb9185 | 110 | char buff[2]; |
zebrin1422 | 2:e87793cb9185 | 111 | unsigned int val[2]; |
zebrin1422 | 2:e87793cb9185 | 112 | int state; |
zebrin1422 | 2:e87793cb9185 | 113 | |
zebrin1422 | 3:16d45bca7580 | 114 | i2c->write(SLV_WRITE_SHT, cmd, 2); |
zebrin1422 | 3:16d45bca7580 | 115 | i2c->read(SLV_READ_SHT, buff, 2); |
zebrin1422 | 2:e87793cb9185 | 116 | |
zebrin1422 | 2:e87793cb9185 | 117 | val[0] = (unsigned int)buff[0]<<8; |
zebrin1422 | 2:e87793cb9185 | 118 | val[1] = (unsigned int)buff[1]; |
zebrin1422 | 2:e87793cb9185 | 119 | |
zebrin1422 | 2:e87793cb9185 | 120 | state = (int)(val[0] | val[1]); |
zebrin1422 | 2:e87793cb9185 | 121 | |
zebrin1422 | 2:e87793cb9185 | 122 | return state; |
zebrin1422 | 2:e87793cb9185 | 123 | } |
zebrin1422 | 2:e87793cb9185 | 124 | |
zebrin1422 | 2:e87793cb9185 | 125 |