Diff: main.cpp

Revision:

0:6e98d1ce9934

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Jul 17 15:58:30 2011 +0000
@@ -0,0 +1,65 @@
+/*AD9834 DDS Test 2011/07/14 MLabo*/
+#include "mbed.h"
+#include "TextLCD.h"
+
+TextLCD lcd(p24, p26, p27, p28, p29, p30); //Starboard Orenge
+DigitalOut FSYNC(p18);
+DigitalOut SCLK(p19);
+DigitalOut SDATA(p20);
+
+Timer timer;
+
+void serial_out(uint16_t data) {
+
+    FSYNC = 0;
+    data & 0x8000? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x4000? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x2000? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x1000? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x0800? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x0400? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x0200? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x0100? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x0080? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x0040? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x0020? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x0010? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x0008? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x0004? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x0002? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    data & 0x0001? SDATA = 1 : SDATA = 0; SCLK = 0; SCLK = 1;
+    FSYNC = 1;
+}
+
+int main() {
+    float SetFreq;
+    uint32_t temp, freqdata;
+    uint16_t Uptemp, Lowtemp;
+    int begin, end;
+
+    SCLK = 1;
+    SDATA = 0;
+    FSYNC = 1;
+
+    lcd.cls();
+    lcd.locate(0,0);
+    lcd.printf("AD9834 test" );
+
+    timer.start();
+    begin = timer.read_us();
+    for ( freqdata = 0; freqdata < 16000000; freqdata++) {
+
+        SetFreq = 5.592405 * (uint32_t)freqdata;
+        temp = (uint32_t)SetFreq;
+        Lowtemp = (uint16_t)(temp & 0x3FFF);
+        Uptemp = (uint16_t)((temp/16384) & 0x3FFF);
+        serial_out(0x2028);
+        serial_out(Lowtemp + 0x4000);
+        serial_out(Uptemp + 0x4000);
+    }
+    end = timer.read_us();
+    lcd.locate(0,1);
+    lcd.printf("%duS", end - begin);
+    while (1) {}
+
+}