Data logger: Sensors -> Barometer & temperature (BMP180), Humidity & temp. (RHT03), Sunshine (Cds): Display -> 20 chracters x 4 lines: Strage -> EEPROM (AT24C1024): Special functions -> Enter sleep mode to save current, reading the logging data via serial line
Dependencies: AT24C1024 BMP180 M41T62 RHT03 TextLCD WakeUp mbed
Fork of LPC1114_barometer_with_data_logging by
Please refer following Notebook.
http://mbed.org/users/kenjiArai/notebook/mbed-lpc1114fn28-data-logger/
main.cpp@11:bccfd75e84a0, 2014-06-15 (annotated)
- Committer:
- kenjiArai
- Date:
- Sun Jun 15 03:35:18 2014 +0000
- Revision:
- 11:bccfd75e84a0
- Parent:
- 10:398f62bb41f7
- Child:
- 12:1e21119688fe
Barometer program / Step by step approach -> 5th step,; baro_BMP180.c -> Separated LCD part and BMP180 part and use exsiting Lib.(LCD) and new Lib.(BMP180)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
kenjiArai | 7:d3b49f1d9f76 | 1 | /* |
kenjiArai | 7:d3b49f1d9f76 | 2 | * mbed Application program for the mbed LPC1114FN28 |
kenjiArai | 7:d3b49f1d9f76 | 3 | * Test program -> Check LED & Switch function |
kenjiArai | 7:d3b49f1d9f76 | 4 | * |
kenjiArai | 7:d3b49f1d9f76 | 5 | * Copyright (c) 2014 Kenji Arai / JH1PJL |
kenjiArai | 7:d3b49f1d9f76 | 6 | * http://www.page.sannet.ne.jp/kenjia/index.html |
kenjiArai | 7:d3b49f1d9f76 | 7 | * http://mbed.org/users/kenjiArai/ |
kenjiArai | 7:d3b49f1d9f76 | 8 | * Created: June 13th, 2014 |
kenjiArai | 10:398f62bb41f7 | 9 | * Revised: June 14th, 2014 |
kenjiArai | 7:d3b49f1d9f76 | 10 | * |
kenjiArai | 7:d3b49f1d9f76 | 11 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
kenjiArai | 7:d3b49f1d9f76 | 12 | * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE |
kenjiArai | 7:d3b49f1d9f76 | 13 | * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
kenjiArai | 7:d3b49f1d9f76 | 14 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
kenjiArai | 7:d3b49f1d9f76 | 15 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
kenjiArai | 7:d3b49f1d9f76 | 16 | */ |
dan | 0:7dec7e9ac085 | 17 | |
kenjiArai | 11:bccfd75e84a0 | 18 | #include "mbed.h" |
kenjiArai | 11:bccfd75e84a0 | 19 | #include "BMP180.h" // Pressure sensor |
kenjiArai | 11:bccfd75e84a0 | 20 | #include "RHT03.h" // Humidity sensor |
kenjiArai | 11:bccfd75e84a0 | 21 | #include "TextLCD.h" |
kenjiArai | 8:f6aa5561f219 | 22 | |
kenjiArai | 11:bccfd75e84a0 | 23 | #define VREF_VOLT 2.482 // TA76431F Vref real measued data |
kenjiArai | 11:bccfd75e84a0 | 24 | #define R_FIX 9930 // 10K ohm <- real measued data |
kenjiArai | 11:bccfd75e84a0 | 25 | #define VOL_OFFSET 4 // Offset data ,= real measured data |
kenjiArai | 8:f6aa5561f219 | 26 | #define CDS_TBL_SIZE 13 |
kenjiArai | 7:d3b49f1d9f76 | 27 | |
kenjiArai | 11:bccfd75e84a0 | 28 | |
kenjiArai | 11:bccfd75e84a0 | 29 | I2C i2c(dp5,dp27); // SDA, SCL |
kenjiArai | 7:d3b49f1d9f76 | 30 | DigitalOut myled0(dp28); // LED for Debug |
kenjiArai | 7:d3b49f1d9f76 | 31 | DigitalOut myled1(dp14); // Indicate state transition |
kenjiArai | 8:f6aa5561f219 | 32 | DigitalOut analog_pwr(dp6); // VCC for analog interface (vol, cds and vref) |
kenjiArai | 8:f6aa5561f219 | 33 | DigitalOut vref_pwr(dp4); // VCC for Vref |
kenjiArai | 7:d3b49f1d9f76 | 34 | DigitalIn sw_chng(dp1,PullUp);// SW for select |
kenjiArai | 7:d3b49f1d9f76 | 35 | DigitalIn sw_mode(dp2,PullUp);// SW for Mode change |
kenjiArai | 8:f6aa5561f219 | 36 | AnalogIn cds(dp11); // Input / CDS data |
kenjiArai | 8:f6aa5561f219 | 37 | AnalogIn vref(dp9); // Input / Bandgap 2.5V |
kenjiArai | 8:f6aa5561f219 | 38 | AnalogIn vol(dp10); // Input / contrast volume |
kenjiArai | 10:398f62bb41f7 | 39 | RHT03 humtemp(dp26); // RHT03 interface |
kenjiArai | 11:bccfd75e84a0 | 40 | Serial pc(dp16,dp15); // UART (vertual COM) |
kenjiArai | 11:bccfd75e84a0 | 41 | BMP180 bmp180(i2c); // Bosch sensor |
kenjiArai | 11:bccfd75e84a0 | 42 | TextLCD_I2C_N i2clcd(&i2c, 0x7c, TextLCD::LCD8x2); |
kenjiArai | 8:f6aa5561f219 | 43 | |
kenjiArai | 8:f6aa5561f219 | 44 | typedef enum {CDS = 0, VREF, VOL} ADC_Select; |
kenjiArai | 8:f6aa5561f219 | 45 | |
kenjiArai | 9:ce80da60884a | 46 | // ADC |
kenjiArai | 8:f6aa5561f219 | 47 | float av_cds, av_vref, av_vol, cal_vcc; |
kenjiArai | 8:f6aa5561f219 | 48 | float r_cds, lux; |
kenjiArai | 8:f6aa5561f219 | 49 | uint32_t nor_vol; |
kenjiArai | 8:f6aa5561f219 | 50 | |
kenjiArai | 10:398f62bb41f7 | 51 | // Humidity Sensor |
kenjiArai | 10:398f62bb41f7 | 52 | float humidity_temp, humidity; |
kenjiArai | 10:398f62bb41f7 | 53 | |
kenjiArai | 8:f6aa5561f219 | 54 | // Cds GL5528 (Dark Resistance 1 Mohm type) SENBA OPTICAL & ELECTRONIC CO.,LTD. |
kenjiArai | 8:f6aa5561f219 | 55 | // Table value referrence: http://homepage3.nifty.com/skomo/f35/hp35_20.htm |
kenjiArai | 8:f6aa5561f219 | 56 | const float lux_cds[CDS_TBL_SIZE][2] = |
kenjiArai | 8:f6aa5561f219 | 57 | {{50,21194},{100,8356},{200,3294},{400,1299},{800,512},{1600,202},{3200,79.6},{6400,31.4}, |
kenjiArai | 8:f6aa5561f219 | 58 | {12800,12.4},{25600,4.88},{51200,1.92},{102400,0.758},{409600,0.118}}; |
kenjiArai | 8:f6aa5561f219 | 59 | |
kenjiArai | 9:ce80da60884a | 60 | //------------------------------------------------------------------------------------------------- |
kenjiArai | 9:ce80da60884a | 61 | // Control Program |
kenjiArai | 9:ce80da60884a | 62 | //------------------------------------------------------------------------------------------------- |
kenjiArai | 11:bccfd75e84a0 | 63 | // Normalize ADC data |
kenjiArai | 8:f6aa5561f219 | 64 | void adc_normalize( ADC_Select n ){ |
kenjiArai | 8:f6aa5561f219 | 65 | int i; |
kenjiArai | 8:f6aa5561f219 | 66 | float x1,y1,dx; |
kenjiArai | 8:f6aa5561f219 | 67 | |
kenjiArai | 8:f6aa5561f219 | 68 | switch (n){ |
kenjiArai | 8:f6aa5561f219 | 69 | case CDS: |
kenjiArai | 11:bccfd75e84a0 | 70 | // v_adc = Rfix / (Rcds + Rfix) -> Rcds = ( Rfix / v_adc ) - Rfix |
kenjiArai | 8:f6aa5561f219 | 71 | r_cds = (R_FIX / av_cds) - R_FIX; |
kenjiArai | 8:f6aa5561f219 | 72 | // CDS resistance to Lux conversion using convertion table (luc_cds[][]) |
kenjiArai | 11:bccfd75e84a0 | 73 | for (i =0; i < CDS_TBL_SIZE; i++){ // search table |
kenjiArai | 11:bccfd75e84a0 | 74 | if ( r_cds <= lux_cds[i][0]){ break; } |
kenjiArai | 11:bccfd75e84a0 | 75 | } |
kenjiArai | 11:bccfd75e84a0 | 76 | // Check table position |
kenjiArai | 11:bccfd75e84a0 | 77 | if (i == 0){ |
kenjiArai | 11:bccfd75e84a0 | 78 | lux = lux_cds[0][1]; |
kenjiArai | 11:bccfd75e84a0 | 79 | break; |
kenjiArai | 11:bccfd75e84a0 | 80 | } else if ( i == CDS_TBL_SIZE ){ |
kenjiArai | 11:bccfd75e84a0 | 81 | if ( r_cds <= lux_cds[i][0] ){ |
kenjiArai | 11:bccfd75e84a0 | 82 | lux = lux_cds[i-1][1]; |
kenjiArai | 8:f6aa5561f219 | 83 | break; |
kenjiArai | 8:f6aa5561f219 | 84 | } |
kenjiArai | 8:f6aa5561f219 | 85 | } |
kenjiArai | 11:bccfd75e84a0 | 86 | // Linear interpolation |
kenjiArai | 11:bccfd75e84a0 | 87 | y1 = lux_cds[i-1][1] - lux_cds[i][1]; |
kenjiArai | 11:bccfd75e84a0 | 88 | x1 = lux_cds[i][0] - lux_cds[i-1][0]; |
kenjiArai | 11:bccfd75e84a0 | 89 | dx = r_cds - lux_cds[i-1][0]; |
kenjiArai | 11:bccfd75e84a0 | 90 | lux = lux_cds[i-1][1] - ((dx/x1) * y1); |
kenjiArai | 8:f6aa5561f219 | 91 | break; |
kenjiArai | 8:f6aa5561f219 | 92 | case VREF: |
kenjiArai | 8:f6aa5561f219 | 93 | // vref = VREF_VOLT / VCC -> VCC = VREF_VOLT / vref |
kenjiArai | 8:f6aa5561f219 | 94 | cal_vcc = VREF_VOLT / vref; |
kenjiArai | 8:f6aa5561f219 | 95 | break; |
kenjiArai | 8:f6aa5561f219 | 96 | case VOL: |
kenjiArai | 8:f6aa5561f219 | 97 | // Vol center = 1.00 (actual 100) |
kenjiArai | 8:f6aa5561f219 | 98 | nor_vol = (uint32_t)(av_vol * 200) + VOL_OFFSET; |
kenjiArai | 8:f6aa5561f219 | 99 | break; |
kenjiArai | 8:f6aa5561f219 | 100 | } |
kenjiArai | 8:f6aa5561f219 | 101 | } |
kenjiArai | 8:f6aa5561f219 | 102 | |
kenjiArai | 11:bccfd75e84a0 | 103 | // Read adc data and averaging |
kenjiArai | 8:f6aa5561f219 | 104 | void adc_all_read( void){ |
kenjiArai | 11:bccfd75e84a0 | 105 | if (av_cds == 0){ av_cds = cds.read(); |
kenjiArai | 11:bccfd75e84a0 | 106 | } else { av_cds = av_cds *0.5 + cds.read() * 0.5; |
kenjiArai | 10:398f62bb41f7 | 107 | } |
kenjiArai | 11:bccfd75e84a0 | 108 | if (av_vref == 0){ av_vref = vref.read(); |
kenjiArai | 11:bccfd75e84a0 | 109 | } else { av_vref = av_vref *0.9 + vref.read() * 0.1; |
kenjiArai | 10:398f62bb41f7 | 110 | } |
kenjiArai | 11:bccfd75e84a0 | 111 | if (av_vol == 0){ av_vol = vol.read(); |
kenjiArai | 11:bccfd75e84a0 | 112 | } else { av_vol = av_vol *0.2 + vol.read() * 0.8; |
kenjiArai | 10:398f62bb41f7 | 113 | } |
kenjiArai | 8:f6aa5561f219 | 114 | } |
kenjiArai | 8:f6aa5561f219 | 115 | |
kenjiArai | 11:bccfd75e84a0 | 116 | // Read Humidity sensor data |
kenjiArai | 10:398f62bb41f7 | 117 | void hum_RHT03_read( void){ |
kenjiArai | 11:bccfd75e84a0 | 118 | while (true){ // wait data |
kenjiArai | 11:bccfd75e84a0 | 119 | if ( humtemp.readData() == RHT_ERROR_NONE ){ break; } |
kenjiArai | 10:398f62bb41f7 | 120 | } |
kenjiArai | 11:bccfd75e84a0 | 121 | if (humidity_temp == 0){humidity_temp = humtemp.getTemperatureC(); |
kenjiArai | 11:bccfd75e84a0 | 122 | } else { humidity_temp = humidity_temp * 0.9 + humtemp.getTemperatureC() * 0.1; |
kenjiArai | 10:398f62bb41f7 | 123 | } |
kenjiArai | 11:bccfd75e84a0 | 124 | if ( humidity == 0 ){ humidity = humtemp.getHumidity(); |
kenjiArai | 11:bccfd75e84a0 | 125 | } else { humidity = humidity * 0.9 + humtemp.getHumidity() * 0.1; |
kenjiArai | 10:398f62bb41f7 | 126 | } |
kenjiArai | 8:f6aa5561f219 | 127 | } |
dan | 0:7dec7e9ac085 | 128 | |
kenjiArai | 11:bccfd75e84a0 | 129 | //------------------------------------- |
kenjiArai | 11:bccfd75e84a0 | 130 | // Application program starts here |
kenjiArai | 11:bccfd75e84a0 | 131 | //------------------------------------- |
dan | 0:7dec7e9ac085 | 132 | int main() { |
kenjiArai | 8:f6aa5561f219 | 133 | pc.baud(9600); |
kenjiArai | 11:bccfd75e84a0 | 134 | pc.printf("\r\nmbed LPC1114FN28 test program by JH1PJL created on "__DATE__"\r\n"); |
kenjiArai | 11:bccfd75e84a0 | 135 | i2clcd.setContrast(25); |
kenjiArai | 11:bccfd75e84a0 | 136 | i2clcd.locate(0, 0); |
kenjiArai | 11:bccfd75e84a0 | 137 | i2clcd.printf("LPC1114F"); |
kenjiArai | 11:bccfd75e84a0 | 138 | i2clcd.locate(0, 1); |
kenjiArai | 11:bccfd75e84a0 | 139 | i2clcd.printf(" JH1PJL "); |
kenjiArai | 10:398f62bb41f7 | 140 | // Initialize data |
kenjiArai | 10:398f62bb41f7 | 141 | av_cds = 0; |
kenjiArai | 10:398f62bb41f7 | 142 | av_vref = 0; |
kenjiArai | 10:398f62bb41f7 | 143 | av_vol = 0; |
kenjiArai | 10:398f62bb41f7 | 144 | humidity_temp = 0; |
kenjiArai | 10:398f62bb41f7 | 145 | humidity = 0; |
kenjiArai | 11:bccfd75e84a0 | 146 | // Show initial screen |
kenjiArai | 11:bccfd75e84a0 | 147 | wait(5.0); |
kenjiArai | 7:d3b49f1d9f76 | 148 | while(1) { |
kenjiArai | 11:bccfd75e84a0 | 149 | // ---------- Cds Sensor, Vref, Volume --------------------------------------------------- |
kenjiArai | 9:ce80da60884a | 150 | // Power on / Analog sensor |
kenjiArai | 8:f6aa5561f219 | 151 | analog_pwr = 1; |
kenjiArai | 8:f6aa5561f219 | 152 | vref_pwr = 1; |
kenjiArai | 8:f6aa5561f219 | 153 | wait(0.2); |
kenjiArai | 8:f6aa5561f219 | 154 | adc_all_read(); |
kenjiArai | 9:ce80da60884a | 155 | // Power off / Analog sensor |
kenjiArai | 11:bccfd75e84a0 | 156 | analog_pwr = 0; |
kenjiArai | 9:ce80da60884a | 157 | // Normalize |
kenjiArai | 11:bccfd75e84a0 | 158 | adc_normalize(CDS); |
kenjiArai | 11:bccfd75e84a0 | 159 | adc_normalize(VREF); |
kenjiArai | 11:bccfd75e84a0 | 160 | adc_normalize(VOL); |
kenjiArai | 8:f6aa5561f219 | 161 | myled0 = 1; |
kenjiArai | 8:f6aa5561f219 | 162 | if (sw_chng == 1){ // SW Off |
kenjiArai | 9:ce80da60884a | 163 | pc.printf( "\r\nCds:%.0fohm -> %.1flux, Vcc:%.3fV, Vol:%d\r\n", |
kenjiArai | 9:ce80da60884a | 164 | r_cds, lux, cal_vcc, nor_vol ); |
kenjiArai | 8:f6aa5561f219 | 165 | } else { // SW On |
kenjiArai | 9:ce80da60884a | 166 | pc.printf( "\r\nCds:%f, Vref:%f, Vol:%f\r\n", av_cds, av_vref, av_vol ); |
kenjiArai | 7:d3b49f1d9f76 | 167 | } |
kenjiArai | 8:f6aa5561f219 | 168 | myled0 = 0; |
kenjiArai | 11:bccfd75e84a0 | 169 | i2clcd.locate(0, 0); // 1st line top |
kenjiArai | 11:bccfd75e84a0 | 170 | // 12345678 |
kenjiArai | 11:bccfd75e84a0 | 171 | i2clcd.printf("L: %4.1f", lux); |
kenjiArai | 11:bccfd75e84a0 | 172 | i2clcd.locate(0, 1); // 2nd line top |
kenjiArai | 11:bccfd75e84a0 | 173 | i2clcd.printf("V: %1.3f", cal_vcc); |
kenjiArai | 10:398f62bb41f7 | 174 | wait(2.0); |
kenjiArai | 11:bccfd75e84a0 | 175 | // ---------- Barometer Sensor / BMP180 -------------------------------------------------- |
kenjiArai | 11:bccfd75e84a0 | 176 | bmp180.normalize(); |
kenjiArai | 11:bccfd75e84a0 | 177 | i2clcd.locate(0, 0); // 1st line top |
kenjiArai | 11:bccfd75e84a0 | 178 | i2clcd.printf("P:%4.1f", bmp180.read_pressure()); |
kenjiArai | 11:bccfd75e84a0 | 179 | i2clcd.locate(0, 1); // 2nd line top |
kenjiArai | 11:bccfd75e84a0 | 180 | i2clcd.printf("T: %\+-0.1f", bmp180.read_temperature()); |
kenjiArai | 9:ce80da60884a | 181 | myled1 = 1; |
kenjiArai | 11:bccfd75e84a0 | 182 | pc.printf("Pres:%4.1fhPa, Temp:%\+-0.1fdegC\r\n", |
kenjiArai | 11:bccfd75e84a0 | 183 | bmp180.read_pressure(), bmp180.read_temperature()); |
kenjiArai | 8:f6aa5561f219 | 184 | myled1 = 0; |
kenjiArai | 10:398f62bb41f7 | 185 | wait(4.0); |
kenjiArai | 11:bccfd75e84a0 | 186 | // ---------- Humidity Sensor / RHT03 ---------------------------------------------------- |
kenjiArai | 10:398f62bb41f7 | 187 | hum_RHT03_read(); // Read Humidity data then avaraging |
kenjiArai | 11:bccfd75e84a0 | 188 | i2clcd.locate(0, 0); // 1st line top |
kenjiArai | 11:bccfd75e84a0 | 189 | i2clcd.printf("H: %2.1f", humidity); |
kenjiArai | 11:bccfd75e84a0 | 190 | i2clcd.locate(0, 1); // 2nd line top |
kenjiArai | 11:bccfd75e84a0 | 191 | i2clcd.printf("T: %\+-0.1f", humidity_temp); |
kenjiArai | 10:398f62bb41f7 | 192 | myled1 = 1; |
kenjiArai | 11:bccfd75e84a0 | 193 | pc.printf("Humid: %0.1f%cRH, Temp:%\+-0.1fdegC\r\n", humidity, '%', humidity_temp); |
kenjiArai | 10:398f62bb41f7 | 194 | myled1 = 0; |
kenjiArai | 10:398f62bb41f7 | 195 | wait(2.0); |
kenjiArai | 7:d3b49f1d9f76 | 196 | } |
dan | 0:7dec7e9ac085 | 197 | } |