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Barometer program : Data Logger function includes Barometer & temperature (BMP180), Humidity & temp. (RHT03), Sunshine (Cds), RTC(M41T62) data. : Logging data saves into EEPROM (AT24C1024) using ring buffer function.
Dependencies: AT24C1024 RHT03 TextLCD BMP180 M41T62
Fork of mbed_blinky by
Please see https://mbed.org/users/kenjiArai/notebook/mbed-lpc1114fn28-barometer-with-data-logging/#
Diff: main.cpp
- Revision:
- 14:18a98cad6109
- Parent:
- 13:950adc9d6d61
- Child:
- 15:065fbeddc305
--- a/main.cpp Sun Jun 22 01:48:32 2014 +0000 +++ b/main.cpp Sun Jun 22 06:10:57 2014 +0000 @@ -1,11 +1,11 @@ /* * mbed Application program for the mbed LPC1114FN28 - * Test program -> Check RTC module + * Test program -> Check I2C line control * * Copyright (c) 2014 Kenji Arai / JH1PJL * http://www.page.sannet.ne.jp/kenjia/index.html * http://mbed.org/users/kenjiArai/ - * Created: June 13th, 2014 + * Created: June 22nd, 2014 * Revised: June 22nd, 2014 * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, @@ -14,285 +14,30 @@ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ - -#include "mbed.h" -#include "BMP180.h" // Own lib. / Pressure sensor -#include "RHT03.h" // Std. lib./ Humidity sensor -#include "TextLCD.h" // Std. lib./ LCD control -#include "AT24C1024.h" // Own lib. / EEPROM control -#include "m41t62_rtc.h" // Own lib. / RTC control - -#define USE_C_STD_LIB 1 - -#define VREF_VOLT 2.482 // TA76431F Vref real measued data -#define R_FIX 9930 // 10K ohm <- real measued data -#define VOL_OFFSET 3 // Offset data ,= real measured data -#define CDS_TBL_SIZE 13 - -I2C i2c(dp5,dp27); // SDA, SCL -DigitalOut myled0(dp28); // LED for Debug -DigitalOut myled1(dp14); // Indicate state transition -DigitalOut analog_pwr(dp6); // VCC for analog interface (vol, cds and vref) -DigitalOut vref_pwr(dp4); // VCC for Vref -DigitalIn sw_chng(dp1,PullUp);// SW for select -DigitalIn sw_mode(dp2,PullUp);// SW for Mode change -AnalogIn cds(dp11); // Input / CDS data -AnalogIn vref(dp9); // Input / Bandgap 2.5V -AnalogIn vol(dp10); // Input / contrast volume -RHT03 humtemp(dp26); // RHT03 interface -Serial pc(dp16,dp15); // UART (vertual COM) -BMP180 bmp180(i2c); // Bosch sensor -TextLCD_I2C_N i2clcd(&i2c, 0x7c, TextLCD::LCD8x2); // LCD(Akizuki AQM0802A) -AT24C1024 at24c1024(i2c); // Atmel 1Mbit EE-PROM -M41T62 m41t62(i2c); // STmicro RTC(M41T62) - -typedef enum {CDS = 0, VREF, VOL} ADC_Select; - -// ADC -float av_cds, av_vref, av_vol, cal_vcc; -float r_cds, lux; -uint32_t nor_vol; - -// Humidity Sensor -float humidity_temp, humidity; - -// EEPROM -uint8_t eep_buf[256 + 2]; - -// Cds GL5528 (Dark Resistance 1 Mohm type) SENBA OPTICAL & ELECTRONIC CO.,LTD. -// Table value referrence: http://homepage3.nifty.com/skomo/f35/hp35_20.htm -const float lux_cds[CDS_TBL_SIZE][2] = - {{50,21194},{100,8356},{200,3294},{400,1299},{800,512},{1600,202},{3200,79.6},{6400,31.4}, - {12800,12.4},{25600,4.88},{51200,1.92},{102400,0.758},{409600,0.118}}; - -#if USE_C_STD_LIB == 0 -const char week[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"}; -#endif - -//------------------------------------------------------------------------------------------------- -// Control Program -//------------------------------------------------------------------------------------------------- -// Normalize ADC data -void adc_normalize (ADC_Select n){ -int i; -float x1,y1,dx; +// You need to select (set 1) only one from blow +#define TST_NORMAL 1 +#define TST_LCD8x2 0 +#define TST_EEPROM 0 +#define TST_BMP180 0 +#define TST_M41T62 0 +// You need to select (set 1) only one from above - switch (n){ - case CDS: - // v_adc = Rfix / (Rcds + Rfix) -> Rcds = ( Rfix / v_adc ) - Rfix - r_cds = (R_FIX / av_cds) - R_FIX; - // CDS resistance to Lux conversion using convertion table (luc_cds[][]) - for (i =0; i < CDS_TBL_SIZE; i++){ // search table - if ( r_cds <= lux_cds[i][0]){ break; } - } - // Check table position - if (i == 0){ - lux = lux_cds[0][1]; - break; - } else if ( i == CDS_TBL_SIZE ){ - if ( r_cds <= lux_cds[i][0] ){ - lux = lux_cds[i-1][1]; - break; - } - } - // Linear interpolation - y1 = lux_cds[i-1][1] - lux_cds[i][1]; - x1 = lux_cds[i][0] - lux_cds[i-1][0]; - dx = r_cds - lux_cds[i-1][0]; - lux = lux_cds[i-1][1] - ((dx/x1) * y1); - break; - case VREF: - // vref = VREF_VOLT / VCC -> VCC = VREF_VOLT / vref - cal_vcc = VREF_VOLT / vref; - break; - case VOL: - // Vol center = 1.00 (actual 100) - nor_vol = (uint32_t)(av_vol * 200) + VOL_OFFSET; - break; - } -} - -// Read adc data and averaging -void adc_all_read (void){ - if (av_cds == 0){ av_cds = cds.read(); - } else { av_cds = av_cds *0.5 + cds.read() * 0.5; - } - if (av_vref == 0){ av_vref = vref.read(); - } else { av_vref = av_vref *0.9 + vref.read() * 0.1; - } - if (av_vol == 0){ av_vol = vol.read(); - } else { av_vol = av_vol *0.2 + vol.read() * 0.8; - } -} - -// Read Humidity sensor data -void hum_RHT03_read (void){ - while (true){ // wait data - if ( humtemp.readData() == RHT_ERROR_NONE ){ break; } - } - if (humidity_temp == 0){humidity_temp = humtemp.getTemperatureC(); - } else { humidity_temp = humidity_temp * 0.9 + humtemp.getTemperatureC() * 0.1; - } - if ( humidity == 0 ){ humidity = humtemp.getHumidity(); - } else { humidity = humidity * 0.9 + humtemp.getHumidity() * 0.1; - } -} - -// Clear LCD -void cls(void){ - i2clcd.locate(0, 0); - i2clcd.printf(" "); - i2clcd.locate(0, 1); - i2clcd.printf(" "); -} - -// Set initial time -void set_initial_time (void){ - // Set Initial data -> 2014/06/22 10:20:00 -#if USE_C_STD_LIB -struct tm t; +#if TST_NORMAL +#include "main_normal.h" +#endif - m41t62.read_rtc_std(&t); - if ((sw_chng == 0) && (sw_mode == 0)){ - t.tm_sec = 0; - t.tm_min = 20; - t.tm_hour = 10; - t.tm_mday = 22; - t.tm_wday = 0; // Sun is not 7 but 0 - t.tm_mon = 5; // Jan. = 0 - t.tm_year = 14 + 100; // 1900+x = now - m41t62.write_rtc_std(&t); - } -#else -rtc_time t; +#if TST_LCD8x2 +#include "main_aqm0802.h" +#endif - m41t62.read_rtc_direct(&t); - if ((sw_chng == 0) && (sw_mode == 0)){ - t.rtc_seconds = 0; - t.rtc_minutes = 20; - t.rtc_hours = 10; - t.rtc_date = 22; - t.rtc_weekday = RTC_Wk_Sunday; - t.rtc_month = 6; - t.rtc_year_raw= 14; - m41t62.write_rtc_direct(&t); - } +#if TST_EEPROM +#include "main_at24c1024.h" #endif -} -//------------------------------------- -// Application program starts here -//------------------------------------- -int main() { - pc.baud(9600); - pc.printf("\r\nmbed LPC1114FN28 test program by JH1PJL created on "__DATE__"(UTC)\r\n"); - i2clcd.setContrast(25); - i2clcd.locate(0, 0); - i2clcd.printf("LPC1114F"); - i2clcd.locate(0, 1); - i2clcd.printf(" JH1PJL "); - // Initialize data - av_cds = 0; - av_vref = 0; - av_vol = 0; - humidity_temp = 0; - humidity = 0; - // RTC - m41t62.set_sq_wave(RTC_SQW_NONE); - set_initial_time(); - // Show initial screen - wait(5.0); - while(1) { - // ---------- Cds Sensor, Vref, Volume --------------------------------------------------- - // Power on / Analog sensor - analog_pwr = 1; - vref_pwr = 1; - wait(0.2); - adc_all_read(); - // Power off / Analog sensor - analog_pwr = 0; - // Normalize - adc_normalize(CDS); - adc_normalize(VREF); - adc_normalize(VOL); - cls(); - i2clcd.locate(0, 0); // 1st line top - // 12345678 - i2clcd.printf("L:%.1f", lux); - i2clcd.locate(0, 1); // 2nd line top - i2clcd.printf("V:%.3f", cal_vcc); - myled0 = 1; - pc.printf( "\r\nCds:%.0fohm->%.1flux, Vcc:%.3fV, Vol:%d\r\n", - r_cds, lux, cal_vcc, nor_vol ); - myled0 = 0; - wait(4.0); - // ---------- Barometer Sensor / BMP180 -------------------------------------------------- - bmp180.normalize(); - cls(); - i2clcd.locate(0, 0); // 1st line top - i2clcd.printf("P:%.1f", bmp180.read_pressure()); - i2clcd.locate(0, 1); // 2nd line top - i2clcd.printf("T:%\+-6.1f", bmp180.read_temperature()); - myled1 = 1; - pc.printf("Pres:%4.1fhPa, Temp:%\+-0.1fdegC\r\n", - bmp180.read_pressure(), bmp180.read_temperature()); - myled1 = 0; - wait(4.0); - // ---------- Humidity Sensor / RHT03 ---------------------------------------------------- - hum_RHT03_read(); // Read Humidity data then avaraging - cls(); - i2clcd.locate(0, 0); // 1st line top - i2clcd.printf("H:%.1f", humidity); - i2clcd.locate(0, 1); // 2nd line top - i2clcd.printf("T:%\+-6.1f", humidity_temp); - myled1 = 1; - pc.printf("Humid: %0.1f%%RH, Temp:%\+-0.1fdegC\r\n", humidity, humidity_temp); - myled1 = 0; - wait(4.0); - // ---------- Check RTC ------------------------------------------------------------------ -#if USE_C_STD_LIB -tm t; -time_t seconds; -char buf[40]; +#if TST_BMP180 +#include "main_bmp180.h" +#endif - m41t62.read_rtc_std(&t); - seconds = mktime(&t); - cls(); - i2clcd.locate(0, 0); // 1st line top - i2clcd.printf("%02d/%02d/%02d", t.tm_year % 100, t.tm_mon, t.tm_mday); - i2clcd.locate(0, 1); // 2nd line top - i2clcd.printf("%02d:%02d:%02d", t.tm_hour, t.tm_min, t.tm_sec); - myled1 = 1; - // Show Time with several example - // ex.1 - pc.printf("Date: %04d/%02d/%02d, %02d:%02d:%02d\r\n", - t.tm_year + 1900, t.tm_mon, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec); - // ex.2 - strftime(buf, 40, "%x %X", localtime(&seconds)); - printf("Date: %s\r\n", buf); - // ex.3 - strftime(buf, 40, "%I:%M:%S %p (%Y/%m/%d)", localtime(&seconds)); - printf("Date: %s\r\n", buf); - // ex.4 - strftime(buf, 40, "%B %d,'%y, %H:%M:%S", localtime(&seconds)); - printf("Date: %s\r\n", buf); - myled1 = 0; - wait(4.0); -#else -rtc_time t; - - m41t62.read_rtc_direct(&t); - cls(); - i2clcd.locate(0, 0); // 1st line top - i2clcd.printf("%02d/%02d/%02d", t.rtc_year, t.rtc_month, t.rtc_date); - i2clcd.locate(0, 1); // 2nd line top - i2clcd.printf("%02d:%02d:%02d", t.rtc_hours, t.rtc_minutes, t.rtc_seconds); - myled1 = 1; - pc.printf("Date:%04d/%02d/%02d(%s), Time:%02d:%02d:%02d\r\n", - t.rtc_year, t.rtc_month, t.rtc_date, &week[t.rtc_weekday-1][0], - t.rtc_hours, t.rtc_minutes, t.rtc_seconds); - myled1 = 0; - wait(4.0); -#endif - } -} +#if TST_M41T62 +#include "main_m41t62.h" +#endif