Revision 0:d5f986c1b759, committed 2012-11-01

Comitter:

gj_schoneveld

Date:

Thu Nov 01 20:49:54 2012 +0000

Commit message:

Initial version.

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Nov 01 20:49:54 2012 +0000
@@ -0,0 +1,65 @@
+/*
+LedShow
+
+This demo shows: 
+- how to write to the multiple outputs/leds using a bus
+- how to send (debug) info to the pc
+- how to persist values
+
+ */
+
+#include "mbed.h"
+
+BusOut leds(LED1, LED2, LED3, LED4);
+Serial pc(USBTX, USBRX);
+LocalFileSystem local("local");
+
+#define delay 0.25
+typedef struct {
+    int value;
+    int steps;
+} show;
+show shows[] = {{1, 4}, {3, 3}, {7, 2}, {5, 2}, {15, 5}};
+char *show_file = "/local/show.txt";
+char *format = "%d\n";
+
+int main()
+{
+    pc.printf("*** The Ultimate Led Show ***\n");
+
+    int show_index = 0;
+
+    FILE *fp = fopen(show_file, "r");
+    if (fp) {
+        fscanf(fp, format, &show_index);
+        fclose(fp);
+    }
+
+    fp = fopen(show_file, "w");
+    if (fp) {
+        fprintf(fp, format, (show_index + 1) % (sizeof(shows) / sizeof(show)));
+        fclose(fp);
+    }
+
+    pc.printf("Show %d out of %d.\n", show_index + 1, (sizeof(shows) / sizeof(show)));
+    pc.printf("Press the reset button to move to the next one.\n");
+
+    show current = shows[show_index];
+
+    int step = 0;
+    bool step_forward = true;
+    while(1) {
+        leds = current.value << step;
+        wait(delay);
+
+        if (step == 0)
+            step_forward = true;
+        else if (step == current.steps - 1)
+            step_forward = false;
+
+        if (step_forward)
+            step++;
+        else
+            step--;
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Nov 01 20:49:54 2012 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/e2ed12d17f06
\ No newline at end of file