Diff: main.cpp

Revision:

19:7f10a8469c31

Parent:

4:81cea7a352b0

--- a/main.cpp	Thu Oct 12 04:41:05 2017 +0000
+++ b/main.cpp	Thu Feb 01 12:26:02 2018 +0000
@@ -1,12 +1,209 @@
+
 #include "mbed.h"
+#include "si5351a.h"
+    
+    InterruptIn button(p18); // Interrupt on digital pushbutton input p18
+    Timer debounce; // define debounce timer
+    Ticker data_out;            // periodic interrupt routines
+    Ticker clock_out;
+    DigitalOut data(p16);
+    DigitalOut clk(p17);
+    DigitalOut swon(p21);
+    DigitalOut swled(LED1);
+    
+    uint16_t divider, mode;
+    uint32_t ref0,ref1,ref2;
+    uint16_t *div_bin; // pointer
+    int count_data,count_clk;
 
-DigitalOut myled(LED1);
+    I2C i2c(p28, p27);       // communication with Si5351A I2C_SDA=p28 & I2C_SCL=p27
+    SI5351A ckref(i2c, 25000000UL);     // Base clock = 25MHz
+    Serial pc(USBTX,USBRX); // setup terminal link
+    LocalFileSystem local("local"); // define local file system
+    
+     uint16_t read_data (int );   
+     uint16_t * set_dec2bin (uint16_t);
+     void send_data (void);
+     void send_clk (void);
+     void toggle(void); // function prototype
+
+        uint16_t read_data (int  mode) 
+        {              
+ //       char bitmode[10];
+  //      char div[10];
+ //       char reads[10], readc[10];
+  //      char writes[10];
+    //  char writec[10];
+        uint16_t value;
+        int i,j;
+        char text[10][10]; // when the file exist and have data
+        char line[10];     // it reads line by line
 
-int main() {
-    while(1) {
-        myled = 1;
-        wait(0.2);
-        myled = 0;
-        wait(0.2);
+        for(i=0; i<10; i++)
+        for(j=0; j<10; j++)
+        text[i][j] = '\0';  // initializing the vector with null
+        for(i=0; i<10; i++)
+        line[i] = '\0';
+               
+                FILE* fp = fopen ("/local/div_prog.txt","r"); // open file for reading               
+                if (fp!=NULL) 
+                {
+                        fseek (fp, 0, SEEK_END);
+                        int  size = ftell(fp);
+                            if (size==0) 
+                            {
+                            pc.printf("File is empty\n");
+                            }
+                            else
+                            {
+                            rewind (fp); // restore pointer to the begin of the file
+                            i=0;
+                                    while ( fgets ( line, sizeof line, fp ) != NULL ) /* read a line */
+                                    {
+                                    strcpy(text[i], line);
+                                    printf("array ----> %s ", text[i]);
+                                    i++;
+                                    }
+                                    fclose(fp); // close file
+                            
+                                    if(mode==0)
+                                    {
+                                    value=atoi(text[mode]);
+                                    pc.printf("Divider value = %d \n",value); // display read data value
+                                    }
+                                    if(mode==1)
+                                    {
+                                    value=atoi(text[mode]);
+                                                if (value==0)
+                                                pc.printf("LSB Mode \n"); //
+                                                if (value==1)
+                                                pc.printf("MSB Mode \n"); //        
+                                    }                             
+                            }
+                    }
+                
+                else
+                {
+                int num;    
+                pc.printf("File does no exist \n");
+                pc.printf("Enter the divider value \n: ");
+                pc.printf("Byte to send LSB(0) or MSB(1)\n: ");
+                
+                  for(i=0; i<2; i++)  //just read to save to lines 
+                  {
+                      pc.scanf("%s", text[i]);
+                      while (!(sscanf(text[i], "%d", &num)))
+                            {
+                            printf("Invalid input '%s'\n", text[i]);
+                            pc.scanf("%s", text[i]);
+                            }     
+                  }                
+ 
+                   
+                }
+                    
+        //        FILE* fp2 = fopen("/local/div_prog.txt","w"); // open file
+        //        memcpy(writes, div, sizeof writes);
+        //        fputs(writes, fp2); // put char (data value) into file
+        //        fclose(fp2); // close file
+        //        value=atoi(writes);
+        //        pc.printf("Divider valuec = %d \n",value); // display read data value
+          
+                return value;
+        }
+    
+    uint16_t * set_dec2bin (uint16_t read_div) {
+    int i;
+     static uint16_t  r[12];
+       /* for loop execution */
+   for( i = 0; i < 12; i++ ){
+      r[i]= read_div >> i & 1;
+       pc.printf("%d",r[i]); // display read data value
+   }
+     pc.printf("\n"); 
+     return r;
     }
-}
+        
+               
+    void send_data (void) {    
+    if(count_data<12) {
+        if(mode==0){
+        data= *(div_bin+count_data);
+        pc.printf("%d",*(div_bin+count_data));
+        count_data=count_data+1;
+        }
+        if(mode==1) {
+        data= *(div_bin+11-count_data);
+        pc.printf("%d",*(div_bin+11-count_data));
+        count_data=count_data+1;
+        }
+ 
+    }
+    else {
+    data=0;
+  //  count_data=0;
+   // pc.printf("\n");
+    }
+    
+    }
+    
+    void send_clk (void){
+          if(count_clk<24) {
+              clk=!clk;
+   //     pc.printf("d%d",clk);
+        count_clk=count_clk+1;
+        }
+          else {
+    clk=0;
+  //  count_clk=0;
+  //  pc.printf("\n");
+    }
+        
+        }
+
+    int main ()
+    {
+    ref0=read_data(2);
+    ref1=read_data(3);
+    ref2=read_data(4);  
+    //ckref.set_frequency(SI5351_CLK0, ref0*1000000);   // CLK0=48MHz
+    //ckref.set_frequency(SI5351_CLK1, ref1*1000000);   // CLK0=50MHz
+    //ckref.set_frequency(SI5351_CLK2, ref2*1000000);   // CLK0=45MHz
+ //   ckref.set_frequency(SI5351_CLK0, 40000000);   // CLK0=48MHz
+    ckref.set_frequency(SI5351_CLK1, 4800000);   // CLK0=50MHz
+  //  ckref.set_frequency(SI5351_CLK2, 49000000);   // CLK0=45MHz
+
+    data=0;
+    clk=0;
+    divider= read_data(0);
+    div_bin= set_dec2bin(divider);
+    mode= read_data(1);
+ 
+    debounce.start();
+    button.rise(&toggle); // attach the address of the toggle
+    swon=1;
+    swled=1;
+    wait(1);
+    swon=0;
+    swled=0;
+    while(1) { //begin while
+            wait(1);
+        }  // end while
+     
+    }
+    
+    void toggle() {
+    if (debounce.read_ms()>200) // only allow toggle if debounce timer
+    data_out.attach(&send_data, 0.01); 
+    wait(0.005);
+    clock_out.attach(&send_clk, 0.005);
+    debounce.reset(); // restart timer when the toggle is performed
+    count_data=0;
+    count_clk=0;
+     swon=1;
+    swled=1;
+    wait(1);
+    swon=0;
+    swled=0;
+}   
+   
\ No newline at end of file