marcel van de Kamp / Mbed 2 deprecated Internal_ADC_with_interrupt

getting 5000 values from internal ADC, writes to two seperate files. Trying to write to external memory (23K256). Last part doesn\'t work

Dependencies:   mbed Ser23K256

Files at this revision

API Documentation at this revision

Revision 0:d2987bd5e0cf, committed 2011-03-04

Comitter:
marcelvandekamp
Date:
Fri Mar 04 15:23:46 2011 +0000
Child:
1:884d54e74205
Commit message:
Version 1

Changed in this revision

Ser23K256.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Ser23K256.lib	Fri Mar 04 15:23:46 2011 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/marcelvandekamp/code/Ser23K256/#d049f6422506

--- /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);
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri Mar 04 15:23:46 2011 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/63bcd7ba4912