Bob Giesberts / Mbed 2 deprecated Inductive_Sensor_3

Version 3.0: Switching to newer LDC1614 which is placed on the same PCB.

Dependencies:   Bob DS1825 LDC1614 LDC1101 SDFileSystem mbed

Fork of Inductive_Sensor by Bob Giesberts

main.cpp@17:a4700b1c3c37, 2016-09-07 (annotated)

Committer:
bobgiesberts
Date:
Wed Sep 07 09:59:16 2016 +0000
Revision:
17:a4700b1c3c37
Parent:
16:b53721840a38
Child:
19:c0707d20bada
Blinky works!; Big troubles with I2C communication with our 32-pin KL25Z chip. Dynamic allocation needed...

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bobgiesberts 2:1a203732fc95 1 /**
bobgiesberts 2:1a203732fc95 2 * @file main.cpp
bobgiesberts 2:1a203732fc95 3 * @brief This file programs the processor for the inductive force sensor
bobgiesberts 15:5de8394fdb3c 4 * using the library LDC1614.h and LDC1614.cpp.
bobgiesberts 15:5de8394fdb3c 5 * - Green Led: processing communication with LDC1614
bobgiesberts 15:5de8394fdb3c 6 * - Red Led: error
bobgiesberts 10:3cab80866536 7 *
bobgiesberts 4:ae441c5727b9 8 * Log protocol:
bobgiesberts 15:5de8394fdb3c 9 * - 0:30 minutes at 13 Hz
bobgiesberts 13:2caedc56b863 10 * - 14:30 minutes rest
bobgiesberts 2:1a203732fc95 11 *
bobgiesberts 2:1a203732fc95 12 * @author Bob Giesberts
bobgiesberts 2:1a203732fc95 13 *
bobgiesberts 15:5de8394fdb3c 14 * @date 2016-08-23
bobgiesberts 2:1a203732fc95 15 */
bobgiesberts 10:3cab80866536 16 #include "mbed.h"
bobgiesberts 15:5de8394fdb3c 17 #include "LDC1614.h" // inductive force sensor
bobgiesberts 11:599ca9982e45 18 #include "SDFileSystem.h" // control the SD card
bobgiesberts 11:599ca9982e45 19 #include "Bob.h" // processorboard
bobgiesberts 11:599ca9982e45 20 #include "DS1825.h" // thermometer
bobgiesberts 10:3cab80866536 21
bobgiesberts 10:3cab80866536 22 #include <iostream>
bobgiesberts 10:3cab80866536 23 #include <vector>
bobgiesberts 10:3cab80866536 24 #include <string>
bobgiesberts 10:3cab80866536 25 using namespace std;
bobgiesberts 10:3cab80866536 26
bobgiesberts 17:a4700b1c3c37 27
bobgiesberts 17:a4700b1c3c37 28
bobgiesberts 17:a4700b1c3c37 29 bool DEBUG = true;
bobgiesberts 17:a4700b1c3c37 30
bobgiesberts 17:a4700b1c3c37 31
bobgiesberts 17:a4700b1c3c37 32
bobgiesberts 5:736a81a59f3c 33 // SETTINGS
bobgiesberts 12:cceece4f3afb 34 float C = 120E-12; // Capacitor in F
bobgiesberts 15:5de8394fdb3c 35 int sensors = 2; // number of attached sensors
bobgiesberts 13:2caedc56b863 36 uint16_t INTERVAL_FIRST = 3600; // First sampling time in seconds. 60:00 minutes = 3600 sec
bobgiesberts 12:cceece4f3afb 37 uint16_t INTERVAL_OFF = 870; // Waiting interval in seconds. 14:30 minutes = 870 sec (14*60+30)
bobgiesberts 12:cceece4f3afb 38 uint16_t INTERVAL_ON = 30; // Sampling interval in seconds. 0:30 minutes = 30 sec
bobgiesberts 12:cceece4f3afb 39
bobgiesberts 15:5de8394fdb3c 40 // Leds
bobgiesberts 15:5de8394fdb3c 41 PinName _LED_PROCESS = PTB1; // Green led (PTB0 for the first sensor) // old = new: PTB1
bobgiesberts 15:5de8394fdb3c 42 PinName _LED_ERROR = PTB0; // Red led // new: PTB0;
bobgiesberts 15:5de8394fdb3c 43
bobgiesberts 15:5de8394fdb3c 44 // Thermometer
bobgiesberts 15:5de8394fdb3c 45 PinName _Tpin = PTC1; // OneWire system (PTB1 for the first sensor) // old = PTB0, new: PTC1
bobgiesberts 15:5de8394fdb3c 46
bobgiesberts 15:5de8394fdb3c 47 // LDC1614
bobgiesberts 15:5de8394fdb3c 48 PinName _LDC_SDA = PTC5; // I2C: SDA
bobgiesberts 15:5de8394fdb3c 49 PinName _LDC_SCL = PTC4; // I2C: SCL
bobgiesberts 15:5de8394fdb3c 50 PinName _LDC_SD = PTC6; // Shutdown
bobgiesberts 15:5de8394fdb3c 51
bobgiesberts 15:5de8394fdb3c 52 // SD File system
bobgiesberts 15:5de8394fdb3c 53 PinName _SD_PRESENT = PTE0; // card detect // old = new: PTE0
bobgiesberts 15:5de8394fdb3c 54 PinName _SD_MOSI = PTD6; // mosi // old = new: PTD6
bobgiesberts 15:5de8394fdb3c 55 PinName _SD_MISO = PTD7; // miso // old = new: PTD7
bobgiesberts 15:5de8394fdb3c 56 PinName _SD_SCLK = PTD5; // sclk // old = new: PTD5
bobgiesberts 15:5de8394fdb3c 57 PinName _SD_CS = PTD4; // cs // old = new: PTD4
bobgiesberts 15:5de8394fdb3c 58
bobgiesberts 15:5de8394fdb3c 59 // Other components
bobgiesberts 17:a4700b1c3c37 60 PinName _ENABLE = PTC3; // enables SD card and Crystal
bobgiesberts 15:5de8394fdb3c 61 PinName _BATTERY = PTC2; // voltage // old = new: PTC2
bobgiesberts 15:5de8394fdb3c 62 PinName _BUTTON = PTA4;
bobgiesberts 12:cceece4f3afb 63
bobgiesberts 0:e81b68888268 64
bobgiesberts 5:736a81a59f3c 65 // load libraries
bobgiesberts 17:a4700b1c3c37 66 Bob bob( _LED_PROCESS, _LED_ERROR, _BUTTON, _ENABLE, _SD_PRESENT, _BATTERY );
bobgiesberts 17:a4700b1c3c37 67 Serial pc( USBTX, USBRX );
bobgiesberts 4:ae441c5727b9 68
bobgiesberts 4:ae441c5727b9 69 // timer variables
bobgiesberts 6:ff39d60061ca 70 uint32_t now = 0, next = 0, prev = 0;
bobgiesberts 8:8cc1960467ae 71 uint8_t t_high = 0;
bobgiesberts 11:599ca9982e45 72 uint32_t t_lost = 0, lost_prev = 0;
bobgiesberts 8:8cc1960467ae 73 uint8_t lost_high = 0;
bobgiesberts 11:599ca9982e45 74 uint32_t t_sleep = 0;
bobgiesberts 12:cceece4f3afb 75 uint32_t t;
bobgiesberts 4:ae441c5727b9 76
bobgiesberts 4:ae441c5727b9 77 // file variables
bobgiesberts 4:ae441c5727b9 78 FILE *fp;
bobgiesberts 4:ae441c5727b9 79 string filename = "/sd/data00.txt";
bobgiesberts 4:ae441c5727b9 80 const char *fn;
bobgiesberts 4:ae441c5727b9 81
bobgiesberts 11:599ca9982e45 82 // temperature variables
bobgiesberts 11:599ca9982e45 83 uint8_t Tdata[9];
bobgiesberts 11:599ca9982e45 84 int16_t T_bin;
bobgiesberts 11:599ca9982e45 85 float T;
bobgiesberts 11:599ca9982e45 86
bobgiesberts 5:736a81a59f3c 87 // temporal storage for data samples
bobgiesberts 12:cceece4f3afb 88 const uint8_t package_size = 60; // ±12-13 Hz, so 60 would take about 5 sec.
bobgiesberts 12:cceece4f3afb 89 struct mydata {
bobgiesberts 12:cceece4f3afb 90 uint32_t t[package_size]; // time (s)
bobgiesberts 12:cceece4f3afb 91 uint32_t L[package_size]; // LHR_DATA
bobgiesberts 12:cceece4f3afb 92 } collected;
bobgiesberts 12:cceece4f3afb 93 uint8_t counter = 0;
bobgiesberts 15:5de8394fdb3c 94 uint8_t status;
bobgiesberts 12:cceece4f3afb 95
bobgiesberts 12:cceece4f3afb 96 // function to write all data to the SD card
bobgiesberts 12:cceece4f3afb 97 void storeit( float T )
bobgiesberts 12:cceece4f3afb 98 {
bobgiesberts 13:2caedc56b863 99 // TODO: writing to SD card more efficient!
bobgiesberts 13:2caedc56b863 100 // t 32-bit | 0.00 2000000.00 3-10x8-bit | FFFFFFFF 8x8
bobgiesberts 13:2caedc56b863 101 // L 24-bit | 0 1677216 6- 7x8-bit | FFFFFF 6x8
bobgiesberts 13:2caedc56b863 102 // V 8-bit | 3.10 4.20 4x8-bit | FF 2x8
bobgiesberts 13:2caedc56b863 103 // T 16-bit | -20.0000 85.0000 7x8-bit | FFFF 4x8
bobgiesberts 13:2caedc56b863 104
bobgiesberts 13:2caedc56b863 105
bobgiesberts 13:2caedc56b863 106 // construct data
bobgiesberts 13:2caedc56b863 107 /*
bobgiesberts 17:a4700b1c3c37 108 bob.processing();
bobgiesberts 13:2caedc56b863 109 // fp = fopen( fn, "a" ); // open file (append)
bobgiesberts 13:2caedc56b863 110 char buffer[16]; memset(buffer, 0, sizeof(buffer));
bobgiesberts 13:2caedc56b863 111 char towrite[64]; memset(towrite, 0, sizeof(towrite));
bobgiesberts 13:2caedc56b863 112 int n = 0, m = 0;
bobgiesberts 13:2caedc56b863 113 for( int i = 0; i < counter; i++ )
bobgiesberts 13:2caedc56b863 114 {
bobgiesberts 13:2caedc56b863 115 for( int j = 0; j < 4; j++ )
bobgiesberts 13:2caedc56b863 116 {
bobgiesberts 13:2caedc56b863 117 // build up next 'word'
bobgiesberts 13:2caedc56b863 118 switch(j)
bobgiesberts 13:2caedc56b863 119 {
bobgiesberts 13:2caedc56b863 120 case 0: n = sprintf(buffer, "%.2f;", (float) collected.t[i]/100.0); break;
bobgiesberts 13:2caedc56b863 121 case 1: n = sprintf(buffer, "%d;", collected.L[i]); break;
bobgiesberts 13:2caedc56b863 122 case 2: n = sprintf(buffer, "%.2f;", bob.battery()); break;
bobgiesberts 13:2caedc56b863 123 case 3: n = sprintf(buffer, "%.4f\r\n", T); break;
bobgiesberts 13:2caedc56b863 124 }
bobgiesberts 13:2caedc56b863 125
bobgiesberts 13:2caedc56b863 126 // calculate if there is still room left for that word
bobgiesberts 13:2caedc56b863 127 if( strlen(towrite) + n > 64 )
bobgiesberts 13:2caedc56b863 128 {
bobgiesberts 13:2caedc56b863 129
bobgiesberts 13:2caedc56b863 130 // pc.printf( "%s", towrite);
bobgiesberts 13:2caedc56b863 131 fp = fopen( fn, "a" ); // open file (append)
bobgiesberts 13:2caedc56b863 132 fprintf( fp, "%s", towrite);
bobgiesberts 13:2caedc56b863 133 fclose( fp ); // close file
bobgiesberts 13:2caedc56b863 134
bobgiesberts 13:2caedc56b863 135 memset(towrite, 0, sizeof(towrite));
bobgiesberts 13:2caedc56b863 136 }
bobgiesberts 13:2caedc56b863 137
bobgiesberts 13:2caedc56b863 138 // build up letter with the next word
bobgiesberts 13:2caedc56b863 139 m = sprintf(towrite, "%s%s", towrite, buffer);
bobgiesberts 13:2caedc56b863 140 }
bobgiesberts 13:2caedc56b863 141 }
bobgiesberts 13:2caedc56b863 142 if(m > 0)
bobgiesberts 13:2caedc56b863 143 {
bobgiesberts 13:2caedc56b863 144 fp = fopen( fn, "a" ); // open file (append)
bobgiesberts 13:2caedc56b863 145 fprintf( fp, "%s", towrite);
bobgiesberts 13:2caedc56b863 146 fclose( fp ); // close file
bobgiesberts 13:2caedc56b863 147 //pc.printf( "%s", towrite);
bobgiesberts 13:2caedc56b863 148 }
bobgiesberts 13:2caedc56b863 149 //fclose( fp ); // close file
bobgiesberts 17:a4700b1c3c37 150 bob.no_processing();
bobgiesberts 15:5de8394fdb3c 151 */
bobgiesberts 13:2caedc56b863 152
bobgiesberts 12:cceece4f3afb 153 // write data to SD card
bobgiesberts 17:a4700b1c3c37 154 bob.processing();
bobgiesberts 12:cceece4f3afb 155 fp = fopen( fn, "a" ); // open file (append)
bobgiesberts 12:cceece4f3afb 156 for( int i = 0; i < counter; i++ )
bobgiesberts 13:2caedc56b863 157 fprintf( fp, "%.2f;%d;%.2f;%.4f\r\n", (float) collected.t[i]/100.0, collected.L[i], bob.battery(), T ); // write to file
bobgiesberts 12:cceece4f3afb 158 fclose( fp ); // close file
bobgiesberts 13:2caedc56b863 159
bobgiesberts 13:2caedc56b863 160 // write to screen
bobgiesberts 13:2caedc56b863 161 //pc.printf( "%.2f;%d;%.2f;%.4f\r\n", (float) collected.t[counter-1]/100.0, collected.L[counter-1], bob.battery(), T ); // write to screen
bobgiesberts 13:2caedc56b863 162
bobgiesberts 17:a4700b1c3c37 163 bob.no_processing();
bobgiesberts 12:cceece4f3afb 164
bobgiesberts 12:cceece4f3afb 165 // Reset data
bobgiesberts 12:cceece4f3afb 166 memset(collected.t, 0, counter);
bobgiesberts 12:cceece4f3afb 167 memset(collected.L, 0, counter);
bobgiesberts 12:cceece4f3afb 168 counter = 0;
bobgiesberts 12:cceece4f3afb 169 }
bobgiesberts 5:736a81a59f3c 170
bobgiesberts 10:3cab80866536 171 int main(void)
bobgiesberts 10:3cab80866536 172 {
bobgiesberts 15:5de8394fdb3c 173 if( DEBUG )
bobgiesberts 17:a4700b1c3c37 174 {
bobgiesberts 17:a4700b1c3c37 175 bob.wakeup_periphery( );
bobgiesberts 17:a4700b1c3c37 176 wait(1);
bobgiesberts 17:a4700b1c3c37 177 // LDC1614 ldc( _LDC_SDA, _LDC_SCL, _LDC_SD, 16E6, sensors, C ); // error: pinmap not found for peripheral
bobgiesberts 17:a4700b1c3c37 178 // LDC1614 ldc( PTC5, PTC4, PTC6, 16E6, sensors, C ); // error: pinmap not found for peripheral
bobgiesberts 17:a4700b1c3c37 179 // I2C _i2c( PTC5, PTC4 ); // error: pinmap not found for peripheral
bobgiesberts 17:a4700b1c3c37 180 // I2CX _i2c( I2C_0, PTC5, PTC4 ); // error: library doesn't work
bobgiesberts 15:5de8394fdb3c 181
bobgiesberts 17:a4700b1c3c37 182 // KL25Z has standard allocated I2C pins that are not present in our package (32-pins)
bobgiesberts 17:a4700b1c3c37 183 // Dynamic allocation of pinnames...
bobgiesberts 17:a4700b1c3c37 184
bobgiesberts 15:5de8394fdb3c 185 while( 1 ) {
bobgiesberts 17:a4700b1c3c37 186
bobgiesberts 17:a4700b1c3c37 187 pc.printf( "works!\r\n" );
bobgiesberts 17:a4700b1c3c37 188
bobgiesberts 17:a4700b1c3c37 189 wait(1);
bobgiesberts 17:a4700b1c3c37 190
bobgiesberts 17:a4700b1c3c37 191 /*
bobgiesberts 15:5de8394fdb3c 192 // check the sensor
bobgiesberts 17:a4700b1c3c37 193 status = ldc.get_status();
bobgiesberts 15:5de8394fdb3c 194
bobgiesberts 15:5de8394fdb3c 195 // if there is an error turn on the red led
bobgiesberts 15:5de8394fdb3c 196 if( ldc.is_error( status ) )
bobgiesberts 15:5de8394fdb3c 197 {
bobgiesberts 15:5de8394fdb3c 198 // error
bobgiesberts 17:a4700b1c3c37 199 bob.error();
bobgiesberts 15:5de8394fdb3c 200 }else{
bobgiesberts 15:5de8394fdb3c 201 if( ldc.is_ready( status ) )
bobgiesberts 15:5de8394fdb3c 202 {
bobgiesberts 17:a4700b1c3c37 203 bob.no_error();
bobgiesberts 15:5de8394fdb3c 204 pc.printf( "sensor 1: %d | sensor 2: %d\r\n", ldc.get_Data( 0 ), ldc.get_Data( 1 ) );
bobgiesberts 15:5de8394fdb3c 205 }
bobgiesberts 15:5de8394fdb3c 206 }
bobgiesberts 17:a4700b1c3c37 207 */
bobgiesberts 17:a4700b1c3c37 208
bobgiesberts 15:5de8394fdb3c 209 }
bobgiesberts 17:a4700b1c3c37 210 }
bobgiesberts 17:a4700b1c3c37 211
bobgiesberts 13:2caedc56b863 212
bobgiesberts 13:2caedc56b863 213 // TODO:
bobgiesberts 13:2caedc56b863 214 // - implement this data conversion in writing to SD!!
bobgiesberts 13:2caedc56b863 215 // - use T as uint16_t, not float!
bobgiesberts 13:2caedc56b863 216 // - use V as uint16_t, not float!
bobgiesberts 13:2caedc56b863 217 // - write blocks of 512 bit (4x 32 + 32 + 16 + 16)
bobgiesberts 13:2caedc56b863 218 //
bobgiesberts 13:2caedc56b863 219 // float temp_a = 127.9375;
bobgiesberts 13:2caedc56b863 220 // pc.printf( "A: %.4f (%08x); \r\n", temp_a, * (uint32_t *) &temp_a);
bobgiesberts 13:2caedc56b863 221
bobgiesberts 6:ff39d60061ca 222 // Load SD File system
bobgiesberts 12:cceece4f3afb 223 // - the Raspberry Pie SD cards give a warning here that might just be ignored:
bobgiesberts 12:cceece4f3afb 224 // "Not in idle state after sending CMD8 (not an SD card?)
bobgiesberts 12:cceece4f3afb 225 // Didn't get a response from the disk
bobgiesberts 12:cceece4f3afb 226 // Set 512-byte block timed out"
bobgiesberts 12:cceece4f3afb 227 // TODO: buy 'better' SD cards from IAPC / the Stores (Kingston ...)
bobgiesberts 17:a4700b1c3c37 228
bobgiesberts 17:a4700b1c3c37 229 // This turns enable on, i.e. it powers the SD card system, the crystal and the LDC
bobgiesberts 17:a4700b1c3c37 230 bob.wakeup_periphery();
bobgiesberts 17:a4700b1c3c37 231
bobgiesberts 17:a4700b1c3c37 232 // load SD File System
bobgiesberts 15:5de8394fdb3c 233 SDFileSystem *sd = new SDFileSystem( _SD_MOSI, _SD_MISO, _SD_SCLK, _SD_CS, "sd" );
bobgiesberts 10:3cab80866536 234
bobgiesberts 6:ff39d60061ca 235 // Create a new data file (data00.txt)
bobgiesberts 10:3cab80866536 236 mkdir("/sd", 0777);
bobgiesberts 11:599ca9982e45 237 for(uint8_t i = 0; i < 100; i++)
bobgiesberts 11:599ca9982e45 238 {
bobgiesberts 6:ff39d60061ca 239 filename[8] = i/10 + '0';
bobgiesberts 4:ae441c5727b9 240 filename[9] = i%10 + '0';
bobgiesberts 4:ae441c5727b9 241 fp = fopen( filename.c_str() , "r" );
bobgiesberts 11:599ca9982e45 242 if( fp == NULL ) // read failed so file does not exist
bobgiesberts 11:599ca9982e45 243 {
bobgiesberts 4:ae441c5727b9 244 fp = fopen( filename.c_str(), "w" ); // create it
bobgiesberts 11:599ca9982e45 245 if( fp != NULL )
bobgiesberts 11:599ca9982e45 246 {
bobgiesberts 4:ae441c5727b9 247 fn = filename.c_str();
bobgiesberts 6:ff39d60061ca 248 fclose( fp );
bobgiesberts 4:ae441c5727b9 249 break;
bobgiesberts 10:3cab80866536 250 } else {
bobgiesberts 17:a4700b1c3c37 251 bob.error(); // error: unable to create new file
bobgiesberts 4:ae441c5727b9 252 }
bobgiesberts 10:3cab80866536 253 } else { // file already exists
bobgiesberts 4:ae441c5727b9 254 fclose( fp );
bobgiesberts 4:ae441c5727b9 255 }
bobgiesberts 1:22c272515015 256 }
bobgiesberts 11:599ca9982e45 257 if( fp == NULL )
bobgiesberts 11:599ca9982e45 258 {
bobgiesberts 17:a4700b1c3c37 259 bob.error(); // error: file 00 - 99 already exists
bobgiesberts 12:cceece4f3afb 260 // pc.printf( "/sd/data00.txt t/m /sd/data99.txt already exist!\n" );
bobgiesberts 11:599ca9982e45 261 }
bobgiesberts 10:3cab80866536 262
bobgiesberts 6:ff39d60061ca 263 // Unload SD File system
bobgiesberts 10:3cab80866536 264 delete sd;
bobgiesberts 10:3cab80866536 265 sd = NULL;
bobgiesberts 17:a4700b1c3c37 266
bobgiesberts 12:cceece4f3afb 267
bobgiesberts 11:599ca9982e45 268 while(1)
bobgiesberts 11:599ca9982e45 269 {
bobgiesberts 11:599ca9982e45 270 // what time is it now?
bobgiesberts 8:8cc1960467ae 271 prev = now; // 0 -> 429 496 --> (4 294,96 s) (71 min)
bobgiesberts 8:8cc1960467ae 272 now = (uint32_t) clock(); // 0 -> 429 496 --> (4 294,96 s) (71 min)
bobgiesberts 11:599ca9982e45 273 if( now < prev )
bobgiesberts 11:599ca9982e45 274 t_high++; // 0 -> 255 --> (255*4 294,96 s) (12 days)
bobgiesberts 11:599ca9982e45 275 t = now + 429496.7296*t_high + t_lost + 429496.7296*lost_high; // 0 -> 219 901 952 --> (2 199 019,52 s) (25 days)
bobgiesberts 17:a4700b1c3c37 276
bobgiesberts 17:a4700b1c3c37 277 // How long should we takes samples?
bobgiesberts 17:a4700b1c3c37 278 next = t + ( (next == 0) ? INTERVAL_FIRST : INTERVAL_ON )*100; // 0 -> 219 904 952 --> (2 199 049,52 s) (25 days)
bobgiesberts 17:a4700b1c3c37 279
bobgiesberts 17:a4700b1c3c37 280
bobgiesberts 17:a4700b1c3c37 281 // Wakeup the periphery (SD, crystal and LDC1614 on)
bobgiesberts 17:a4700b1c3c37 282 bob.wakeup_periphery();
bobgiesberts 11:599ca9982e45 283
bobgiesberts 15:5de8394fdb3c 284 // load libraries to take control over the communication
bobgiesberts 17:a4700b1c3c37 285 LDC1614 *ldc = new LDC1614(_LDC_SDA, _LDC_SCL, _LDC_SD, 16E6, sensors, C); // load LDC1614 libray
bobgiesberts 15:5de8394fdb3c 286 DS1825 *thermometer = new DS1825( _Tpin ); // load thermometer (DS1825) library
bobgiesberts 17:a4700b1c3c37 287 SDFileSystem *sd = new SDFileSystem(_SD_MOSI, _SD_MISO, _SD_SCLK, _SD_CS, "sd"); // load SD File System library
bobgiesberts 11:599ca9982e45 288 mkdir("/sd", 0777); // select folder
bobgiesberts 10:3cab80866536 289
bobgiesberts 10:3cab80866536 290
bobgiesberts 6:ff39d60061ca 291 // Take samples for INTERVAL_ON seconds
bobgiesberts 11:599ca9982e45 292 while( t < next )
bobgiesberts 11:599ca9982e45 293 {
bobgiesberts 12:cceece4f3afb 294 // what time is it now?
bobgiesberts 12:cceece4f3afb 295 prev = now;
bobgiesberts 12:cceece4f3afb 296 now = (uint32_t) clock();
bobgiesberts 12:cceece4f3afb 297 if( now < prev )
bobgiesberts 12:cceece4f3afb 298 t_high++;
bobgiesberts 12:cceece4f3afb 299 t = now + 429496.7296*t_high + t_lost + 429496.7296*lost_high;
bobgiesberts 10:3cab80866536 300
bobgiesberts 15:5de8394fdb3c 301 status = ldc->get_status();
bobgiesberts 15:5de8394fdb3c 302
bobgiesberts 15:5de8394fdb3c 303 // Is there any error?
bobgiesberts 15:5de8394fdb3c 304 if( ldc->is_error(status) )
bobgiesberts 12:cceece4f3afb 305 {
bobgiesberts 15:5de8394fdb3c 306 // red led on
bobgiesberts 17:a4700b1c3c37 307 bob.error();
bobgiesberts 15:5de8394fdb3c 308 }else{
bobgiesberts 15:5de8394fdb3c 309 // red led off
bobgiesberts 17:a4700b1c3c37 310 bob.no_error();
bobgiesberts 15:5de8394fdb3c 311
bobgiesberts 15:5de8394fdb3c 312 if( ldc->is_ready(status) ) // data from all sensors is ready
bobgiesberts 15:5de8394fdb3c 313 {
bobgiesberts 15:5de8394fdb3c 314 // Store data in temporal memory
bobgiesberts 15:5de8394fdb3c 315 collected.t[counter] = t;
bobgiesberts 15:5de8394fdb3c 316 collected.L[counter] = ldc->get_Data( 0 );
bobgiesberts 15:5de8394fdb3c 317 counter++;
bobgiesberts 15:5de8394fdb3c 318
bobgiesberts 15:5de8394fdb3c 319 // Write a full package of data points to the SD card
bobgiesberts 15:5de8394fdb3c 320 if( counter >= package_size-1 )
bobgiesberts 15:5de8394fdb3c 321 storeit( thermometer->getTemperature() );
bobgiesberts 15:5de8394fdb3c 322 }
bobgiesberts 6:ff39d60061ca 323 }
bobgiesberts 15:5de8394fdb3c 324
bobgiesberts 15:5de8394fdb3c 325
bobgiesberts 10:3cab80866536 326 }
bobgiesberts 12:cceece4f3afb 327
bobgiesberts 12:cceece4f3afb 328 // Write remaining data to the SD card
bobgiesberts 12:cceece4f3afb 329 if( counter > 0 )
bobgiesberts 12:cceece4f3afb 330 storeit( thermometer->getTemperature() );
bobgiesberts 10:3cab80866536 331
bobgiesberts 17:a4700b1c3c37 332 // prepare for sleep: delete and power down the periphery (SD, crystal and LDC1614)
bobgiesberts 12:cceece4f3afb 333 delete sd; sd = NULL; // unload library to be able to power down completely
bobgiesberts 12:cceece4f3afb 334 delete ldc; ldc = NULL; // unload library to be able to power down completely
bobgiesberts 12:cceece4f3afb 335 delete thermometer; thermometer = NULL; // unload library to be able to power down completely
bobgiesberts 17:a4700b1c3c37 336 bob.shutdown_periphery();
bobgiesberts 12:cceece4f3afb 337
bobgiesberts 16:b53721840a38 338 // if the battery is almost empty (Vbatt < 3.10 V), the thermometer stops
bobgiesberts 12:cceece4f3afb 339 // working well and L can not be corrected. So just shut down...
bobgiesberts 12:cceece4f3afb 340 if( bob.battery() < 3.10f )
bobgiesberts 12:cceece4f3afb 341 {
bobgiesberts 17:a4700b1c3c37 342 bob.error(); // error: battery empty
bobgiesberts 12:cceece4f3afb 343 // pc.printf( "Battery empty (%.1f V), shutting down.\n", bob.battery() );
bobgiesberts 12:cceece4f3afb 344 exit(0);
bobgiesberts 12:cceece4f3afb 345 }
bobgiesberts 10:3cab80866536 346
bobgiesberts 11:599ca9982e45 347 // what time is it now?
bobgiesberts 11:599ca9982e45 348 prev = now;
bobgiesberts 11:599ca9982e45 349 now = (uint32_t) clock();
bobgiesberts 11:599ca9982e45 350 if( now < prev )
bobgiesberts 11:599ca9982e45 351 t_high++;
bobgiesberts 11:599ca9982e45 352 t = now + 429496.7296*t_high + t_lost + 429496.7296*lost_high;
bobgiesberts 10:3cab80866536 353
bobgiesberts 8:8cc1960467ae 354 // Calculate sleeping time (correction to INTERVAL_OFF)
bobgiesberts 12:cceece4f3afb 355 // t has passed the limit of next. Those few ms are substracted from INTERVAL_OFF.
bobgiesberts 11:599ca9982e45 356 t_sleep = INTERVAL_OFF*100 - (t - next);
bobgiesberts 8:8cc1960467ae 357
bobgiesberts 12:cceece4f3afb 358 // Calculate time that will be lost during sleep
bobgiesberts 11:599ca9982e45 359 lost_prev = t_lost;
bobgiesberts 11:599ca9982e45 360 t_lost += t_sleep;
bobgiesberts 11:599ca9982e45 361 if( t_lost < lost_prev )
bobgiesberts 11:599ca9982e45 362 lost_high++;
bobgiesberts 13:2caedc56b863 363
bobgiesberts 11:599ca9982e45 364 // Sleep now (ms), enter low power mode
bobgiesberts 11:599ca9982e45 365 bob.sleep( t_sleep * 10 );
bobgiesberts 10:3cab80866536 366
bobgiesberts 0:e81b68888268 367 }
bobgiesberts 6:ff39d60061ca 368
bobgiesberts 11:599ca9982e45 369
bobgiesberts 11:599ca9982e45 370
bobgiesberts 11:599ca9982e45 371
bobgiesberts 12:cceece4f3afb 372 }
bobgiesberts 12:cceece4f3afb 373