Revision 0:454cad38222c, committed 2010-08-29

Comitter:

simon

Date:

Sun Aug 29 11:00:36 2010 +0000

Commit message:

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Aug 29 11:00:36 2010 +0000
@@ -0,0 +1,48 @@
+// drum machine sequenced by text file, sford
+// e.g. line contains -o--, where o is a hit
+
+#include "mbed.h"
+
+class Drum {
+public:
+    Drum(PinName p) : x(p) {}
+    
+    void off() { x = 0; }
+    void hit() { 
+        x = 1;
+        t.attach(this, &Drum::off, 0.01);
+    }
+        
+    DigitalOut x;
+    Timeout t;
+};
+
+Drum drums[4] = {p21, p22, p23, p24};
+AnalogIn speed(p20);
+BusOut leds(LED1, LED2, LED3, LED4);
+
+LocalFileSystem local("local");
+
+int main() {
+    int count = 0;
+    while(1) {
+        FILE *fp = fopen("/local/drums.txt", "r");
+        if(!fp) {
+            error("Couldn't open file\n");
+        }
+        char tracks[4];
+        while(!feof(fp)) {
+            fscanf(fp, "%c%c%c%c\n", &tracks[0], &tracks[1], &tracks[2], &tracks[3]);
+            for(int i=0; i<4; i++) {
+                if(tracks[i] == 'o') {
+                    drums[i].hit();
+                }
+            }       
+            leds = 1 << (count % 4);
+            count++;
+            wait(0.05 + speed);            
+        }
+        count = 0;
+        fclose(fp);
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sun Aug 29 11:00:36 2010 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/9114680c05da