main.cpp

00001 #include "mbed.h"
00002 #include "SCP1000.h"
00003 
00004 DigitalIn sw(p9);
00005 DigitalOut leds[4] = {LED1, LED2, LED3, LED4};
00006 SCP1000 scp1000(p5, p6, p7, p8);
00007 LocalFileSystem local("local");
00008 void printMeasurements(char *title, int n);
00009 
00010 int main() {
00011     char buf[32];
00012     
00013     for (int i = 0; !sw; i = (i + 1) % 8) {
00014         leds[i < 4 ? i : 7 - i] = 1;
00015         wait(0.05);
00016         leds[i < 4 ? i : 7 - i] = 0;
00017     }
00018 
00019     FILE *fp = fopen("/local/scp1000.txt", "a");
00020     if (fp == NULL) exit(-1);
00021 
00022     time_t seconds = time(NULL);
00023     strftime(buf, sizeof(buf), "%x %X", localtime(&seconds));
00024     fprintf(fp, "Time: %s\n", buf);
00025     fprintf(fp, "SCP1000 ASIC revision number = %d\n", scp1000.revision());
00026     bool result = scp1000.performSelfTest();
00027     fprintf(fp, "SCP1000 self test: %s\n", result ? "PASSED" : "FAILED");
00028     fprintf(fp, "SCP1000 reset\n");
00029     scp1000.reset();
00030     fclose(fp);
00031 
00032     scp1000.setOperationMode(SCP1000::HIGH_SPEED_MODE);
00033     printMeasurements("SCP1000 High Speed Mode - 9Hz", 3600 * 9);
00034 
00035     scp1000.setOperationMode(SCP1000::HIGH_RESOLUTION_MODE);
00036     printMeasurements("SCP1000 High Resolution Mode - 1.8Hz",  3600 * 9 / 5);
00037 
00038     scp1000.setOperationMode(SCP1000::ULTRA_LOW_POWER_MODE);
00039     printMeasurements("SCP1000 Ultra Low Power Mode - 1Hz", 3600 * 10);
00040 }
00041 
00042 void printMeasurements(char *title, int n) {
00043     FILE *fp = fopen("/local/scp1000.txt", "a");
00044     fprintf(fp, "%s\n", title);
00045 
00046     for (int i = 0; !sw && i < n; i++) {
00047         while (!scp1000.isReady())
00048             ;
00049         time_t seconds = time(NULL);
00050         char buf[16];
00051         strftime(buf, sizeof(buf), "%X", localtime(&seconds));
00052         fprintf(fp, "%s %3.2f, %3.3f\n", buf, scp1000.readTemperature(), scp1000.readPressure());
00053         leds[i % 4] = (i % 8) < 4;
00054         if (i % 100 == 99) {
00055             fclose(fp);
00056             fp = fopen("/local/scp1000.txt", "a");
00057         }
00058     }
00059 
00060     fclose(fp);
00061     wait(1.0);
00062 }