Diff: main.cpp

Revision:

0:d2987bd5e0cf

Child:

1:884d54e74205

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Mar 04 15:23:46 2011 +0000
@@ -0,0 +1,109 @@
+#include "mbed.h"
+#include "Ser23K256.h"
+
+SPI spi(p11, p12, p13);
+Ser23K256 sram(spi, p14);
+
+LocalFileSystem local ("local");
+#define AANTAL_SAMPLES 5000
+
+InterruptIn Mswitch(p23);
+AnalogIn Sense5(p20);
+Ticker ADC_Timer;
+Timer t;
+
+float usCurrentValue;
+float /* unsigned int*/ Samples[AANTAL_SAMPLES];
+int teller=0;
+Serial pc(USBTX, USBRX);
+
+void Start_ADC();
+void ADC_Interrupt();
+void ADC_Stop();
+void WriteVal();
+void WriteExternal();
+void ShowExternal();
+
+
+int main() {
+
+    pc.baud(9600);
+    LPC_GPIOINT->IO0IntClr = (LPC_GPIOINT->IO0IntStatR | LPC_GPIOINT->IO0IntStatF);
+    LPC_GPIOINT->IO2IntClr = (LPC_GPIOINT->IO2IntStatR | LPC_GPIOINT->IO2IntStatF);
+
+    Mswitch.rise(&Start_ADC);
+}
+
+void Start_ADC() {
+    teller = 0;
+    t.reset();
+    t.start();
+    memset(Samples, 0, AANTAL_SAMPLES);
+    ADC_Timer.attach_us(&ADC_Interrupt, 200);
+    wait(0.0005);
+}
+
+void ADC_Interrupt() {
+
+    usCurrentValue= (Sense5.read_u16()&0xFFF);
+    Samples[teller] =(((usCurrentValue*3.3)/4095) - 2.38) / 0.17;  // turning value into G's
+    teller = teller + 1;
+    if (teller == AANTAL_SAMPLES) {
+        ADC_Stop();
+    }
+}
+
+void ADC_Stop() {
+    ADC_Timer.detach();
+    t.stop();
+    pc.printf("meting gedaan, tijd: %f", t.read());
+    WriteVal();
+}
+
+
+void WriteVal() {
+    // Writing the values in array to file onto disk.
+    pc.printf("Writing to disk (be patient) \n\r");
+    FILE *fp = fopen("/local/testfile.txt", "w");
+
+    for (int i=0; i < AANTAL_SAMPLES; i++) {
+
+        fprintf(fp," %f ", Samples[i]);;
+    }
+    pc.printf("closing file");
+    fclose(fp);
+    wait(4);
+
+    FILE *fp2 = fopen("/local/Force.txt", "w");
+
+    for (int i=0; i < AANTAL_SAMPLES; i++) {
+
+        fprintf(fp2, "%f \n\r", 4.487 * Samples[i]* 9.8 + 44.00241);
+    }
+    pc.printf("closing file");
+    fclose(fp2);
+    wait(4.0);
+   // WriteExternal();
+    pc.printf("written to ext");
+    wait(3);
+    ShowExternal();
+    main();
+}
+
+void WriteExternal() {
+
+    unsigned int buff[AANTAL_SAMPLES];
+
+    for (int i=0; i < AANTAL_SAMPLES; i++) {
+        sram.write (i, Samples[i]);
+    }
+}
+
+void ShowExternal() {
+
+    unsigned int buff[AANTAL_SAMPLES];
+    for (int i=0; i < AANTAL_SAMPLES; i++) {
+        buff[i] = sram.read(i);
+        pc.printf("%f \n\r",buff);
+    }
+}