ceri clatworthy
ADC Niose test Connect four analog signals to your MBED. and then run the Windows app. The four traces are displayed on an oscilloscope like display. I have used a USB HID DEVICE link, so connections to D+, D- are required. The MBED code is otherwise quite basic, So you can modify it to your own test needs. Additionaly, there is a 16 bit count value, in my MBED code Mainly to test if MSB & LSB are correct.
Diff: main.cpp
- Revision:
- 0:cbe01b678bd4
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sat Nov 19 22:54:22 2011 +0000
@@ -0,0 +1,89 @@
+#include "mbed.h"
+#include "USBHID.h"
+/*
+DigitalOut myled1(LED1);
+DigitalOut myled2(LED2);
+DigitalOut myled3(LED3);
+DigitalOut myled4(LED4);
+*/
+BusOut leds(LED1,LED2,LED3,LED4);
+AnalogIn PortA (p20);
+AnalogIn PortB (p19);
+AnalogIn PortC (p18);
+AnalogIn PortD (p17);
+
+int a, x, t, k;
+int An_a, An_b, An_c, An_d;
+
+#define HID_MessageSize 18
+
+//This report will contain data to be sent
+HID_REPORT send_report;
+HID_REPORT recv;
+
+//We declare a USBHID device
+USBHID hid_A (HID_MessageSize, HID_MessageSize,0xcbc,0x123,5); // In Length, Out Length, VID, PID, Release
+//USBHID hid_B (HID_MessageSize, HID_MessageSize,0xcbc,0x123,6);
+
+
+// Strings are in "USBDevice.cpp"
+
+
+//BusOut leds(LED1,LED2,LED3,LED4);
+
+int main(void) {
+
+ //Fill the report
+ for (int i = 0; i < HID_MessageSize; i++)
+ send_report.data[i] = i;
+ send_report.length = HID_MessageSize;
+
+ //jjhhggrr
+
+ while (1)
+ {
+ //Send the report
+
+// if (hid_A.readNB(&recv))
+ {
+ leds = recv.data[0];
+ send_report.data[1]++;
+
+ // just a test to see how fast send could be ..
+
+ for (x=0; x<200;x++)
+ {
+
+ An_a = PortA.read_u16();
+ An_b = PortB.read_u16();
+ An_c = PortC.read_u16();
+ An_d = PortD.read_u16();
+
+ send_report.data[3] = An_a & 0xff;
+ send_report.data[2] = An_a >>8;
+
+ send_report.data[5] = An_b & 0xff;
+ send_report.data[4] = An_b >>8;
+
+ send_report.data[7] = An_c & 0xff;
+ send_report.data[6] = An_c >>8;
+
+ send_report.data[9] = An_d & 0xff;
+ send_report.data[8] = An_d >>8;;
+
+ send_report.data[11] = k & 0xff;
+ send_report.data[10] = k >>8;
+
+ k++;
+
+ send_report.data[16] = x;
+ hid_A.send(&send_report);
+ }
+
+
+ }
+ send_report.data[HID_MessageSize-2]++;
+ hid_A.send(&send_report);
+ wait(0.5);
+ }
+}