Diff: main.cpp

Revision:

0:a7a8a42992cf

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Dec 31 14:19:26 2014 +0000
@@ -0,0 +1,126 @@
+//CODE FOR TESTING POWER CONSUMPTION AND OUTPUT POWER OF RFM69HCW
+//transmits 240 0xFFs continously.
+ 
+
+#include "mbed.h"
+
+Serial pc(USBTX, USBRX);          // tx, rx
+SPI spi(D11, D12, D13);              // mosi, miso, sclk
+DigitalOut cs(D10);                //slave select or chip select
+
+#define TIMES 20
+#define DATA 0x00
+
+void writereg(uint8_t reg,uint8_t val)
+{
+    cs = 0;
+    __disable_irq();
+    spi.write(reg | 0x80);
+    spi.write(val);
+    __enable_irq();
+    cs = 1;
+}
+uint8_t readreg(uint8_t reg)
+{
+    int val;
+    cs = 0;
+    __disable_irq();
+    spi.write(reg & ~0x80);
+    val = spi.write(0);
+    __enable_irq();
+    cs = 1;
+    return val;
+}
+
+int main()
+{
+    wait(0.1);                     // wait for POR to complete
+    cs=1;                          // chip must be deselected
+    wait(0.1);
+    spi.format(8,0);
+    spi.frequency(10000000);       //10MHz SCLK
+
+    int datalen;                         //for filling data into fifo for the first time
+    int i = 0;                           //for loops
+    int u = 0;                           //universal count for hk array
+    int bar = 0;
+    uint8_t rval=0x00;
+
+    //initialization
+    //Common configuration registers
+    writereg(0x01,0x00);       //sequencer on,standby mode
+    writereg(0x02,0x00);// |0x01);       //packet, ook, no dc   //default 0X08 for ook //for fsk 0x00
+    //writereg(0x02,0x00);//fsk
+    //GFSK
+    //writereg(0x02,0x0A);
+    //FdevMSB and FDevLSB default
+    writereg(0x03,0x68);       //1200bps
+    writereg(0x04,0x2B);       //1200bps
+    writereg(0x07,0x6C);       
+    writereg(0x08,0xC0);    
+    writereg(0x09,0x00);       //try 6C C0 00 for 435 MHZ    //try 6C 40 00 for 432.something            //try E4 C0 00 for 915
+    
+    //Transmitter registers
+    // RegPaLevel
+    
+    //IRQ and Pin Mapping Registers
+    //no DIO mapped yet
+    //irq1: modeready used
+    //irq2: fifofull, fifothresh,packetsent used
+    
+    //Packet Engine Registers
+    writereg(0x2C,0xFF);        //set preamble
+    writereg(0x2D,0xFF);        //set preamble
+    writereg(0x2E,0x80);        //sync on for 0x80               ..........................
+    writereg(0x2F,0x5E);        //sync word 1               .........................
+    writereg(0x37,0x08);// 0x40);// | 0x10);        //packetconfig1                packet issue even if crc fails???..........................
+    writereg(0x38,0x00);        //payload length = 0 ... unlimited payload mode
+    writereg(0x3C,0x0A);         //fifothresh = 48      because we want it cleared once its 40!!!!
+
+    pc.printf("Press t to transmit.....press s to stop\n");
+    while(pc.getc()=='t') {
+
+        //Filling Data into FIFO for the first time
+        cs = 0;        
+        spi.write(0x80);//fifo write access        
+        for(i=0; i<TIMES; i++) {            
+            spi.write(DATA);            
+        }
+        //u=i;//check its 64
+        cs = 1;
+
+        //Highpower settings
+        writereg(0x11,0x7F);    //RegPalevel (20db)                //~
+        writereg(0x13,0x0F);    //RegOCP
+        writereg(0x5A,0x5D);    //RegTestPa1
+        writereg(0x5C,0x7C);    //RegTestPa2
+
+        //Check for fifoThresh
+        while((readreg(0x28) & 0x20) != 0x20);  
+
+        //Set to Tx mode
+        writereg(0x01,0x0C);
+        
+        //Check for fifoThresh
+        while((readreg(0x28) & 0x20) != 0x00);
+        
+      
+        while(1) {
+            bar = TIMES;
+            //writing again
+            cs = 0;
+            spi.write(0x80);
+            for(i=0; i<bar; i++)          
+                spi.write(DATA);
+            cs = 1;
+
+            //Check for fifoThresh
+            while((readreg(0x028) & 0x20) != 0x00);
+            pc.printf("transmitting");
+            
+        }
+          //wait for packet sent bit to fire
+    while((readreg(0x28) & 0x08) != 0x08);
+    pc.printf("packet sent!!! \n");
+    }
+}