Diff: main.cpp

Revision:

0:78e5168d3809

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Oct 10 07:40:59 2010 +0000
@@ -0,0 +1,72 @@
+#include "mbed.h"
+
+/* Simple test for SOMO-14D module.
+ Plays a selected file. See www.4dsystems .com.au for details.
+ 
+ Author: Lluis Nadal.
+ Date: October 10th 2010.
+
+ File names must match file number in decimal:  0000.ad4 ... to 0511.ad4
+ Commands:
+    File addres (fileNumber): 0x0000 - 0x01FF
+    Play/Pause: 0xFFFE
+    Volume (8 levels): 0xFFF0 - 0xFFF7
+    Stop: 0xFFFF
+
+*/
+
+DigitalOut reset(p16); // connected to SOMO p10
+DigitalIn busy(p15);   // connected to SOMO p5
+
+// SOMO p9 connected to ground
+// SOMO p8 connected to Vcc = +3.3V
+// SOMO p11, p12 connected to speaker
+DigitalOut data(p5);     // connected to SOMO p4
+DigitalOut clk(p7);      // connected to SOMO p3
+unsigned short fileNumber;
+unsigned short command;
+
+
+void init() {
+
+    clk = 1;
+    reset = 1;
+    reset = 0;
+    wait(0.005);
+    reset = 1;
+    wait(0.3);
+}
+
+
+
+void writeData(unsigned short value) {
+
+    clk = 0;
+    wait(0.002);
+    for (int i = 0; i<16; i++) {
+        wait(0.000100f);
+        data = value & 0x8000; // selects most significant bit
+        wait(0.000001f);
+        clk = 1;
+        wait(0.000050f);
+        clk=0;
+        value = value <<1;     // shifts one bit left
+    }
+    clk =1;
+    wait(0.002);
+}
+
+
+int main() {
+    wait(0.5);
+    while (busy == 1); // checks if SOMO is busy
+
+    fileNumber = 0x0001; //selects 2nd file
+    command = 0xFFFE;    // play file command
+
+    init();
+
+    writeData(fileNumber);
+    writeData(command);
+
+}