![](/media/cache/profiles/f0fcf351df4eb6786e9bb6fc4e2dee02.jpg.50x50_q85.jpg)
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:
- 18:b3a27f681171
- Parent:
- 16:f164f8912201
--- a/main.cpp Thu Jul 03 23:07:13 2014 +0000 +++ b/main.cpp Sat Aug 08 07:01:19 2020 +0000 @@ -1,26 +1,20 @@ /* * mbed Application program for the mbed LPC1114FN28 - * Barometer program for only for LPC1114FN28 + * Barometer program for only for LPC1114FN28 * - * Copyright (c) 2014 Kenji Arai / JH1PJL - * http://www.page.sannet.ne.jp/kenjia/index.html - * http://mbed.org/users/kenjiArai/ + * Copyright (c) 2014,'20 Kenji Arai / JH1PJL + * http://www7b.biglobe.ne.jp/~kenjia/ + * https://os.mbed.com/users/kenjiArai/ * Created: May 21st, 2014 - * Revised: July 3rd, 2014 - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, - * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE - * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, - * 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. + * Revised: August 8th, 2020 */ /* * Function - * measure atmospheric pressure and temprerature using Bosch BMP180 pressure sensor + * measure atmospheric pressure and temprerature using Bosch BMP180 sensor * show measured data on AQM0802A LCD and logging such data in EEPROM */ -// Include --------------------------------------------------------------------------------------- +// Include -------------------------------------------------------------------- #include "mbed.h" #include "BMP180.h" // Own lib. / Pressure sensor #include "RHT03.h" // Std. lib./ Humidity sensor @@ -28,7 +22,7 @@ #include "m41t62_rtc.h" // Own lib. / RTC control #include "dt_log.h" -// Definition ------------------------------------------------------------------------------------ +// Definition ----------------------------------------------------------------- #define USE_MON 1 #define USE_BARO 0 @@ -47,12 +41,12 @@ #define CDS_TBL_SIZE 13 // Waiting time -#define STATE_CHANGE_TIME 3 +#define STATE_CHANGE_TIME 3000000 // 3sec #define TIME_INTERVAL 600 // 10 minutes typedef enum {CDS = 0, VREF, VOL} ADC_Select; -// Object ---------------------------------------------------------------------------------------- +// Object --------------------------------------------------------------------- Timeout to; // wake-up from sleep() I2C i2c(dp5,dp27); // SDA, SCL DigitalOut myled0(dp28); // LED for Debug @@ -69,10 +63,10 @@ M41T62 m41t62(i2c); // STmicro RTC(M41T62) TextLCD_I2C_N i2clcd(&i2c, 0x7c, TextLCD::LCD8x2); // LCD(Akizuki AQM0802A) -// Function prototypes --------------------------------------------------------------------------- +// Function prototypes -------------------------------------------------------- extern int mon( void); // only use for debug purpose -// RAM ------------------------------------------------------------------------------------------- +// RAM ------------------------------------------------------------------------ int flag; // ADC @@ -93,240 +87,277 @@ // EEPROM //extern xEeprom_ptr log_inf; -// ROM / Constant data --------------------------------------------------------------------------- +// ROM / Constant data -------------------------------------------------------- // 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}}; +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} +}; // LCD screen data -enum Screen{ +enum Screen { SCRN_Clear=0, SCRN_Opening, SCRN_Goto_mon, SCRN_Backto_normal }; -// Clear Opening Goto_mon Backto_normal +// Clear Opening Goto_mon Backto_normal char scrn_1st[4][10] = { " ", "LPC1114F", "GOTO MON", "Back to"}; char scrn_2nd[4][10] = { " ", " JH1PJL ", " 9600BPS", " Normal"}; // Disply on LCD -enum Disp_num{ +enum Disp_num { DSP_INIT=0, DSP_BARO, DSP_HUMD, DSP_LUX, DSP_TIME, DSP_LOG, DSP_RTURN }; // loop time = STATE_CHANGE_TIME * 20 = 3 * 20 = 60 sec (current) -// rule 1) DSP_INIT is top position, 2)DSP_RTURN is end position, 3) Total number 20 +// rule 1) DSP_INIT is top position +// 2) DSP_RTURN is end position +// 3) Total number 20 const uint8_t lcd_disp_tbl[20] // 1, 2, 3, 4, 5, - = {DSP_INIT, DSP_BARO, DSP_BARO, DSP_BARO, DSP_TIME, -// 6, 7, 8, 9, 10, - DSP_TIME, DSP_HUMD, DSP_HUMD, DSP_LUX, DSP_LUX, + = {DSP_INIT, DSP_BARO, DSP_BARO, DSP_BARO, DSP_TIME, +// 6, 7, 8, 9, 10, + DSP_TIME, DSP_HUMD, DSP_HUMD, DSP_LUX, DSP_LUX, // 11, 12, 13, 14, 15, - DSP_BARO, DSP_BARO, DSP_TIME, DSP_TIME, DSP_HUMD, -// 16, 17, 18, 19, 20 - DSP_HUMD, DSP_LUX, DSP_LUX, DSP_LOG, DSP_RTURN}; - -//------------------------------------------------------------------------------------------------- + DSP_BARO, DSP_BARO, DSP_TIME, DSP_TIME, DSP_HUMD, +// 16, 17, 18, 19, 20 + DSP_HUMD, DSP_LUX, DSP_LUX, DSP_LOG, DSP_RTURN + }; + +//------------------------------------------------------------------------------ // Control Program -//------------------------------------------------------------------------------------------------- +//------------------------------------------------------------------------------ // Normalize ADC data -void adc_normalize (ADC_Select n){ -int i; -float x1,y1,dx; +void adc_normalize (ADC_Select n) +{ + int i; + float x1,y1,dx; - 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]; + 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; + // 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; +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_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; - } + 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; } +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_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; + if ( humidity == 0 ) { + humidity = humtemp.getHumidity(); + } else { + humidity = humidity * 0.9 + humtemp.getHumidity() * 0.1; } } -void set_lcd_screen(int n){ +void set_lcd_screen(int n) +{ i2clcd.locate(0, 0); i2clcd.printf("%s", scrn_1st[n]); i2clcd.locate(0, 1); i2clcd.printf("%s", scrn_2nd[n]); } -//------------------------------------------------------------------------------------------------- +//------------------------------------------------------------------------------ // Application program -//------------------------------------------------------------------------------------------------- +//------------------------------------------------------------------------------ // Nothing is done but just wake-up from sleep condition -void wakeup() { +void wakeup() +{ flag = 1; myled1 = !myled1; } // Measure pressure and show it on LCD -void conv_and_disp(void) { -tm t; -time_t seconds = 0; -time_t old_seconds = 0; -uint32_t step = 0, dt; -uint8_t num; +void conv_and_disp(void) +{ + tm t; + time_t seconds = 0; + time_t old_seconds = 0; + uint32_t step = 0, dt; + uint8_t num; while (true) { // infinit loop for measure and display // Call wakeup()function after specific time - to.attach(&wakeup, STATE_CHANGE_TIME); // this is for wake-up -//---- State Control ---- + // this is for wake-up + to.attach(callback(&wakeup), chrono::milliseconds(STATE_CHANGE_TIME)); + //---- State Control ---- num = lcd_disp_tbl[step++]; - switch (num){ - // ---------- Initialize data ---------------------------------------------------------------- - case DSP_INIT: - av_cds = 0; - av_vref = 0; - av_vol = 0; - humidity_temp = 0; - humidity = 0; - // RTC - m41t62.set_sq_wave(RTC_SQW_NONE); - m41t62.read_rtc_std(&t); - old_seconds = mktime(&t); - break; - // ---------- Cds Sensor, Vref, Volume ------------------------------------------------------- - case DSP_LUX: - // 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); - set_lcd_screen(SCRN_Clear); - 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); - break; - // ---------- Barometer Sensor / BMP180 ------------------------------------------------------ - case DSP_BARO: - bmp180.normalize(); - baro = bmp180.read_pressure(); - baro_temp = bmp180.read_temperature(); - set_lcd_screen(SCRN_Clear); - i2clcd.locate(0, 0); // 1st line top - i2clcd.printf("P:%.1f", baro); - i2clcd.locate(0, 1); // 2nd line top - i2clcd.printf("T:%\+-6.1f", baro_temp); - break; - // ---------- Humidity Sensor / RHT03 -------------------------------------------------------- - case DSP_HUMD: - hum_RHT03_read(); // Read Humidity data then avaraging - set_lcd_screen(SCRN_Clear); - 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); - break; - // ---------- RTC ---------------------------------------------------------------------------- - case DSP_TIME: - m41t62.read_rtc_std(&t); - seconds = mktime(&t); - set_lcd_screen(SCRN_Clear); - i2clcd.locate(0, 0); // 1st line top - i2clcd.printf("%02d/%02d/%02d", t.tm_year % 100, t.tm_mon + 1, t.tm_mday); - i2clcd.locate(0, 1); // 2nd line top - i2clcd.printf("%02d:%02d:%02d", t.tm_hour, t.tm_min, t.tm_sec); - break; - // ---------- EEPROM Logging ----------------------------------------------------------------- - case DSP_LOG: - if (seconds >= old_seconds + TIME_INTERVAL){ - // Data Logging action - old_seconds += TIME_INTERVAL; - dtlog_data_pack(); // Get EEPROM resource - dtlog_one_write(); // Write data to EEPROM - dt = (uint32_t)dtlog_buf_occupation(); - dt = (dt * 1000)/ BLK_NO; - } - set_lcd_screen(SCRN_Clear); - i2clcd.locate(0, 0); // 1st line top - i2clcd.printf("Logging"); - i2clcd.locate(0, 1); // 2nd line top - i2clcd.printf("%d.%01d%%", dt / 10, dt % 10); - break; - // ---------- return (loop) ------------------------------------------------------------------ - case DSP_RTURN: - default: - // <State> State change - step = 1; // if something wrong, go to reset condition + switch (num) { + // ---------- Initialize data ------------------------------------- + case DSP_INIT: + av_cds = 0; + av_vref = 0; + av_vol = 0; + humidity_temp = 0; + humidity = 0; + // RTC + m41t62.set_sq_wave(RTC_SQW_NONE); + m41t62.read_rtc_std(&t); + old_seconds = mktime(&t); + break; + // ---------- Cds Sensor, Vref, Volume ---------------------------- + case DSP_LUX: + // Power on / Analog sensor + analog_pwr = 1; + vref_pwr = 1; + ThisThread::sleep_for(200ms); + adc_all_read(); + // Power off / Analog sensor + analog_pwr = 0; + // Normalize + adc_normalize(CDS); + adc_normalize(VREF); + adc_normalize(VOL); + set_lcd_screen(SCRN_Clear); + 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); + break; + // ---------- Barometer Sensor / BMP180 --------------------------- + case DSP_BARO: + bmp180.normalize(); + baro = bmp180.read_pressure(); + baro_temp = bmp180.read_temperature(); + set_lcd_screen(SCRN_Clear); + i2clcd.locate(0, 0); // 1st line top + i2clcd.printf("P:%.1f", baro); + i2clcd.locate(0, 1); // 2nd line top + i2clcd.printf("T:%+6.1f", baro_temp); + break; + // ---------- Humidity Sensor / RHT03 ----------------------------- + case DSP_HUMD: + hum_RHT03_read(); // Read Humidity data then avaraging + set_lcd_screen(SCRN_Clear); + 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); + break; + // ---------- RTC ------------------------------------------------- + case DSP_TIME: + m41t62.read_rtc_std(&t); + seconds = mktime(&t); + set_lcd_screen(SCRN_Clear); + i2clcd.locate(0, 0); // 1st line top + i2clcd.printf("%02d/%02d/%02d", + t.tm_year % 100, t.tm_mon + 1, t.tm_mday); + i2clcd.locate(0, 1); // 2nd line top + i2clcd.printf("%02d:%02d:%02d", t.tm_hour, t.tm_min, t.tm_sec); + break; + // ---------- EEPROM Logging -------------------------------------- + case DSP_LOG: + if (seconds >= old_seconds + TIME_INTERVAL) { + // Data Logging action + old_seconds += TIME_INTERVAL; + dtlog_data_pack(); // Get EEPROM resource + dtlog_one_write(); // Write data to EEPROM + dt = (uint32_t)dtlog_buf_occupation(); + dt = (dt * 1000)/ BLK_NO; + } + set_lcd_screen(SCRN_Clear); + i2clcd.locate(0, 0); // 1st line top + i2clcd.printf("Logging"); + i2clcd.locate(0, 1); // 2nd line top + i2clcd.printf("%d.%01d%%", dt / 10, dt % 10); + break; + // ---------- return (loop) --------------------------------------- + case DSP_RTURN: + default: + // <State> State change + step = 1; // if something wrong, go to reset condition } - // ---------- back to top -------------------------------------------------------------------- + // ---------- back to top --------------------------------------------- myled0 = !myled0; - while (flag == 0){ wait(0.01);} - wait(0.1); + while (flag == 0) { + ThisThread::sleep_for(10ms); + } + ThisThread::sleep_for(100ms); myled1 = !myled1; flag = 0; } } // Application program starts here -int main() { +int main() +{ flag = 0; i2clcd.setContrast(25); set_lcd_screen(SCRN_Opening); - if (sw_chng == 0){ // SW ON - //-- Enter Monitor Mode -- - myled1 = 1; wait(0.5); - myled1 = 0; wait(0.5); - myled1 = 1; wait(0.5); - if (sw_chng == 0){ // Still SW ON - myled1 = 0; wait(0.5); - myled1 = 1; wait(0.5); - if (sw_mode == 0){ // SW ON + if (sw_chng == 0) { // SW ON + //-- Enter Monitor Mode -- + myled1 = 1; + ThisThread::sleep_for(500ms); + myled1 = 0; + ThisThread::sleep_for(500ms); + myled1 = 1; + ThisThread::sleep_for(500ms); + if (sw_chng == 0) { // Still SW ON + myled1 = 0; + ThisThread::sleep_for(500ms); + myled1 = 1; + ThisThread::sleep_for(500ms); + if (sw_mode == 0) { // SW ON set_lcd_screen(SCRN_Clear); set_lcd_screen(SCRN_Goto_mon); myled1 = 0;