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
main.cpp
- Committer:
- bobgiesberts
- Date:
- 2016-02-24
- Revision:
- 10:3cab80866536
- Parent:
- 9:47f1b1c0ef8b
- Child:
- 11:599ca9982e45
File content as of revision 10:3cab80866536:
/** * @file main.cpp * @brief This file programs the processor for the inductive force sensor * using the library LDC1101.h and LDC1101.cpp. * - Red Led: processing communication with LDC1101 * - Green Led: processing SD card * * Log protocol: * - 1 minute at 20 Hz * - 29 minutes rest * * @author Bob Giesberts * * @date 2015-12-17 */ #include "mbed.h" #include "LDC1101.h" #include "SDFileSystem.h" #include "Bob.h" #include "OneWire.h" #include <iostream> #include <vector> #include <string> using namespace std; // SETTINGS bool DEBUG = false; float C = 120E-12; // pF int INTERVAL_ON = 30; // 30 = 30 sec int INTERVAL_OFF = 870; // 1770 = 29*60+30 sec // load libraries Bob bob(PTB0, PTB1, PTC3, PTE0, PTC2, PTE30); // red led, green led, sd_enable, sd_present, batt, 3V3_DET Serial pc(USBTX, USBRX); // timer variables uint32_t now = 0, next = 0, prev = 0; uint8_t t_high = 0; uint32_t lost = 0, lost_prev = 0; uint8_t lost_high = 0; uint16_t t_sleep = 0; // file variables FILE *fp; string filename = "/sd/data00.txt"; const char *fn; // temporal storage for data samples vector < uint32_t > Svector; uint32_t S; vector < uint32_t > Lvector; uint32_t L; float batt; float f; float T; BYTE address[8]; BYTE Tdata[9]; int main(void) { if( DEBUG ) { LDC1101 *ldc = new LDC1101(PTC6, PTC7, PTC5, PTC4, C, 16E6); OneWire *onewire = new OneWire( PTB1 ); wait(1); while(1) { while( !ldc->is_New_LHR_data() ) { } // wait until data is ready L = ldc->get_LHR_Data(); // initialization of the Thermometer /* onewire.reset(); onewire.write( 0x33 ); // READ ROM for (int i = 0; i < 8; i++) address[i] = onewire.read(); if( address[7] != onewire.crc8(address, 7) ) pc.printf("Address CRC not valid!\r\n"); pc.printf("\r\n"); // wait_ms( 750 ); */ // Temperature conversion onewire->reset(); onewire->write( 0xCC ); onewire->write( 0x44, 1 ); wait_ms( 750 ); // read scratchpad onewire->reset(); onewire->write( 0xCC ); onewire->write( 0xBE ); for (int i = 0; i < 9; i++) Tdata[i] = onewire->read(); if( Tdata[8] != onewire->crc8(Tdata, 8) ) pc.printf("Data CRC not valid!\r\n"); T = ((Tdata[1] << 8) | Tdata[0]) / 16.0; pc.printf("L: %d; T: %.4f C", L, T); //pc.printf( "%d", L ); //pc.printf( "%.3f MHz", ldc->get_fsensor()/1000000 ); //pc.printf( "%.3f KHz", (f - ldc->get_fsensor())/1000 ); pc.printf( "\r\n" ); wait( 1 ); // 20 Hz } } bob.flash(2); pc.printf( "check sd: %d\r\n", bob.checkSD() ); // Load SD File system // bob.wakeup(); bob.SDon(); SDFileSystem *sd = new SDFileSystem(PTD6, PTD7, PTD5, PTD4, "sd"); // Create a new data file (data00.txt) mkdir("/sd", 0777); for(uint8_t i = 0; i < 100; i++) { filename[8] = i/10 + '0'; filename[9] = i%10 + '0'; fp = fopen( filename.c_str() , "r" ); if( fp == NULL ) { // read failed so file does not exist fp = fopen( filename.c_str(), "w" ); // create it if( fp != NULL ) { fn = filename.c_str(); fclose( fp ); break; } else { bob.red(); } } else { // file already exists fclose( fp ); } } // Unload SD File system delete sd; sd = NULL; while(1) { // SD on + sensor on bob.SDon(); // Sensor on LDC1101 *ldc = new LDC1101(PTC6, PTC7, PTC5, PTC4, C, 16E6); // SD on SDFileSystem *sd = new SDFileSystem(PTD6, PTD7, PTD5, PTD4, "sd"); mkdir("/sd", 0777); // select folder // time prev = now; // 0 -> 429 496 --> (4 294,96 s) (71 min) now = (uint32_t) clock(); // 0 -> 429 496 --> (4 294,96 s) (71 min) if( now < prev ) t_high++; // 0 -> 255 --> (255*4 294,96 s) (12 days) S = now + 429496.7296*t_high + lost + 429496.7296*lost_high; // 0 -> 219 901 952 --> (2 199 019,52 s) (25 days) // first time take a comfortably long period if( next == 0 ) { next = S + (INTERVAL_ON + INTERVAL_OFF)*100; } else { next = S + INTERVAL_ON*100; // 0 -> 219 904 952 --> (2 199 049,52 s) (25 days) } // Take samples for INTERVAL_ON seconds while( S < next ) { // Collect a package 16 data points while( Lvector.size() < 16 ) { // Write is per 512 bits: 16 * 32 = 512 // wait for new data to be ready while( !ldc->is_New_LHR_data() ) { } if( !ldc->is_Oscillation_Error() ) { // sensor not overloaded // time prev = now; now = (uint32_t) clock(); if( now < prev ) t_high++; S = now + 429496.7296*t_high + lost + 429496.7296*lost_high; // induction L = ldc->get_LHR_Data(); // Store data in temporal memory Svector.push_back( S ); Lvector.push_back( L ); } } // battery level batt = bob.battery(); // temperature OneWire *onewire = new OneWire( PTB1 ); onewire->reset(); onewire->write( 0xCC ); onewire->write( 0x44, 1 ); wait_ms( 750 ); onewire->reset(); onewire->write( 0xCC ); onewire->write( 0xBE ); for (int i = 0; i < 9; i++) Tdata[i] = onewire->read(); if( Tdata[8] != onewire->crc8(Tdata, 8) ) pc.printf("Data CRC not valid!\r\n"); T = ((Tdata[1] << 8) | Tdata[0]) / 16.0; onewire->depower(); delete onewire; onewire = NULL; // Store the package of 16 data points bob.red(); fp = fopen( fn, "a" ); // open file for( int i = 0; i < Lvector.size(); i++ ) fprintf( fp, "%.2f;%d;%.4f;%.4f\r\n", (float) Svector.at(i)/100.0, Lvector.at(i), batt, T ); // write to file fclose( fp ); // close file bob.redoff(); pc.printf("%.2f;%d;%.4f;%.4f\r\n", (float) Svector.at(0)/100.0, Lvector.at(0), batt, T ); // write to console // Release data Lvector.clear(); Svector.clear(); } // SD off delete sd; sd = NULL; bob.SDoff(); DigitalOut *sdP2 = new DigitalOut(PTD4); sdP2->write(0); delete sdP2; sdP2 = NULL;// cs DigitalOut *sdP3 = new DigitalOut(PTD6); sdP3->write(0); delete sdP3; sdP3 = NULL;// mosi DigitalOut *sdP5 = new DigitalOut(PTD5); sdP5->write(0); delete sdP5; sdP5 = NULL;// sck DigitalOut *sdP7 = new DigitalOut(PTD7); sdP7->write(0); delete sdP7; sdP7 = NULL;// miso // Sensor off delete ldc; ldc = NULL; DigitalOut *senP2 = new DigitalOut(PTC7); senP2->write(0); delete senP2; senP2 = NULL; // miso DigitalOut *senP3 = new DigitalOut(PTC5); senP3->write(0); delete senP3; senP3 = NULL; // sck DigitalOut *senP4 = new DigitalOut(PTC6); senP4->write(0); delete senP4; senP4 = NULL; // mosi DigitalOut *senP5 = new DigitalOut(PTC4); senP5->write(0); delete senP5; senP5 = NULL; // cs // Calculate sleeping time (correction to INTERVAL_OFF) prev = now; now = (uint32_t) clock(); if( now < prev ) t_high++; S = now + 429496.7296*t_high + lost + 429496.7296*lost_high; t_sleep = ( INTERVAL_OFF*100 - (S - next) ); // Add lost time to the counter lost_prev = lost; lost += t_sleep; if( lost < lost_prev ) lost_high++; // Sleep now... // pc.printf( "zzz... (%f) \r\n\r\n", (float) (t_sleep / 100.0) ); bob.sleep( (float) ( t_sleep / 100.0) ); } }