Diff: main.cpp

Revision:

0:fd709b6d9199

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed May 30 01:41:50 2012 +0000
@@ -0,0 +1,172 @@
+/*AD9834 DDS Test 2011/07/14 MLabo*/
+/*AD9832 DDS Test based on 2011/07/14 MLabo, by Fuyuno,Sakura */
+/*AD5235 DPM Test based on AD9832 DDS Test by Fuyuno,Sakura */
+/*AD5235 DPM and AD9832 DDS Test by Fuyuno,Sakura */
+#include "mbed.h"
+
+// Signal pair(SCLK:SCLKD,SDATA:SDI) may share same pins....
+// Usage : 38400bps 8N1 , '*' cmd is change control target
+
+// SPI for DPM
+DigitalOut CS(p8);
+DigitalOut SCLK(p7);
+DigitalOut SDI(p5);
+
+// SPI for DDS
+DigitalOut FSYN(p14);
+DigitalOut SCLKD(p13);
+DigitalOut SDATA(p11);
+
+Serial pc(USBTX,USBRX);
+
+#define XTAL_FREQ ((double)16160000.0)
+
+void serial_out(uint16_t data) {
+    FSYN = 0;
+    data & 0x8000? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x4000? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x2000? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x1000? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x0800? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x0400? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x0200? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x0100? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x0080? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x0040? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x0020? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x0010? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x0008? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x0004? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x0002? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    data & 0x0001? SDATA = 1 : SDATA = 0; SCLKD = 0; SCLKD = 1;
+    FSYN = 1;
+}
+
+typedef union {
+    uint32_t        UI;
+    uint8_t        B[4];
+} FREQDATA ;
+
+void AD9832_Init(void) {
+    FREQDATA FreqReg ;
+    FreqReg.UI = 0 ;
+    serial_out(0xF800);
+    serial_out(0x3300 + FreqReg.B[3]);
+    serial_out(0x2200 + FreqReg.B[2]);        
+    serial_out(0x3100 + FreqReg.B[1]);
+    serial_out(0x2000 + FreqReg.B[0]);
+    serial_out(0xC000);
+}
+
+void AD9832_SetFreq(double freq) {
+    FREQDATA FreqReg ;
+    FreqReg.UI = (uint32_t)(freq * (double)(0x100000000UL) / (XTAL_FREQ) + 0.5);
+    serial_out(0x3300 + FreqReg.B[3]);
+    serial_out(0x2200 + FreqReg.B[2]);        
+    serial_out(0x3100 + FreqReg.B[1]);
+    serial_out(0x2000 + FreqReg.B[0]);
+}
+
+void serial_out24(uint32_t data) {
+    CS = 0;
+    data & 0x800000? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x400000? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x200000? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x100000? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x080000? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x040000? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x020000? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x010000? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x008000? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x004000? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x002000? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x001000? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x000800? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x000400? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x000200? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x000100? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x000080? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x000040? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x000020? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x000010? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x000008? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x000004? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x000002? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    data & 0x000001? SDI = 1 : SDI = 0; SCLK = 0; SCLK = 1;
+    CS = 1;
+}
+
+// Writes data X to the RDAC1 register,
+void AD5235_SET(int chan,int value) {
+    uint32_t cmd ;
+    cmd = 0xB00000 | ((chan == 1) ?  0x010000 : 0x000000) | (value & 0x03FF) ;
+    serial_out24(cmd);
+}
+
+void AD5235_SAVE(int chan) {
+    uint32_t cmd ;
+    cmd = 0x200000 | ((chan == 1) ?  0x010000 : 0x000000) ;
+    serial_out24(cmd);
+}
+
+int main() {
+    double freq = 60.0;
+    int val ;
+    char buf[256] ;
+    int i,ptr ;
+    
+    int chan = 1 ;
+    
+    pc.baud(38400);
+    SCLK = 1;
+    SDI  = 0;
+    CS  = 1;
+    
+    SCLKD = 1;
+    SDATA = 0;
+    FSYN = 1;
+
+    AD9832_Init();
+    AD9832_SetFreq(freq) ;
+    while(1) {
+        while (1) {
+            pc.printf("\r\nAD5235>");
+            ptr = 0;
+            while(1) {
+                if (pc.readable()) {
+                    i = pc.getc() ;
+                    if (i == 0x0D) {
+                        buf[ptr] = '\0' ;
+                        break ;
+                    }
+                    pc.putc(i) ;
+                    buf[ptr++] = i ;
+                }
+            }
+            if (buf[0] == '*') break ;
+            val = atoi(buf) ;
+            AD5235_SET(chan,val) ;
+            //AD5235_SAVE(chan) ;
+            pc.printf("\r\nRVAL SET to Chan %d to %04X",chan,val);        
+        }
+        while(1) {
+            pc.printf("\r\nAD9832>");
+            ptr = 0;
+            while(1) {
+                if (pc.readable()) {
+                    i = pc.getc() ;
+                    if (i == 0x0D) {
+                        buf[ptr] = '\0' ;
+                        break ;
+                    }
+                    pc.putc(i) ;
+                    buf[ptr++] = i ;
+                }
+            }
+            if (buf[0] == '*') break ;
+            freq = atof(buf) ;
+            pc.printf("\r\nFreq SET:%g",freq);        
+            AD9832_SetFreq(freq) ;
+        }
+    }
+}