SWRMeter/firmware/firmware.ino

/*
 */

#include <si5351.h>
#include "Wire.h"

extern "C" {
  #include "globals.h"
}

Si5351 si5351;

uint32_t start_freq = 10000;
uint32_t   end_freq = 50000000;
uint32_t  step_freq = 1000000; // 1 MHz default step size
uint16_t  intervall = 1000; // intervall to change the frequency as milli seconds
enum si5351_drive drive_str = SI5351_DRIVE_2MA;

void setup()
{
  pinMode(A0, INPUT);
  pinMode(A1, INPUT);

  // Init the serial connection
  Serial.begin(57600);

  // initialize the command control module
  cc_init();

  // init the Si5351
  si5351.init(SI5351_CRYSTAL_LOAD_8PF, 0);

  si5351.set_pll(SI5351_PLL_FIXED, SI5351_PLLA);

  si5351.output_enable(SI5351_CLK0, 0); // disable clock output 0
  si5351.output_enable(SI5351_CLK1, 0); // disable clock output 1
  si5351.output_enable(SI5351_CLK2, 0); // disable clock output 2

  /*
  // Set CLK0 to output 14 MHz with a fixed PLL frequency
  si5351.set_pll(SI5351_PLL_FIXED, SI5351_PLLA);
  si5351.set_freq(1400000000ULL, SI5351_PLL_FIXED, SI5351_CLK0);

  // Set CLK1 to output 20 MHz
  si5351.set_freq(2000000000ULL, 0ULL, SI5351_CLK1);
  
  si5351.output_enable(SI5351_CLK0, 1); // enable clock output 0
  si5351.drive_strength(SI5351_CLK0, SI5351_DRIVE_2MA); // 2 4 6 8ma
  */
}

void loop()
{
  // Read the Status Register and print it every 10 seconds
  si5351.update_status();

  /*
  Serial.print("SYS_INIT: ");
  Serial.print(si5351.dev_status.SYS_INIT);
  Serial.print("  LOL_A: ");
  Serial.print(si5351.dev_status.LOL_A);
  Serial.print("  LOL_B: ");
  Serial.print(si5351.dev_status.LOL_B);
  Serial.print("  LOS: ");
  Serial.print(si5351.dev_status.LOS);
  Serial.print("  REVID: ");
  Serial.println(si5351.dev_status.REVID);
  */

  if (Serial.available() > 0)
  {
    uint8_t c = Serial.read() & 0xff;
    cc_processData(c);
  }

  delay(100);
}