mirror of
https://github.com/JeffersGlass/DDS_VFO.git
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Added support libraries
Uploaded Si5351 library and encoder library
This commit is contained in:
JeffersGlass
115
si5351/examples/si5351calibration/si5351calibration.ino
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115
si5351/examples/si5351calibration/si5351calibration.ino
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/* Simple calibration routine for the Si5351 breakout board.
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*
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* Copyright 2015 Paul Warren <pwarren@pwarren.id.au>
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*
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* Uses code from https://github.com/darksidelemm/open_radio_miniconf_2015
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* and the old version of the calibration sketch
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*
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* This sketch is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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* Foobar is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "si5351.h"
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#include "Wire.h"
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Si5351 si5351;
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int32_t cal_factor;
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int32_t old_cal;
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uint64_t rx_freq;
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uint64_t target_freq = 1000000000ULL; // 10 MHz, in hundredths of hertz
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void setup()
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{
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// Start serial and initialize the Si5351
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Serial.begin(57600);
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si5351.init(SI5351_CRYSTAL_LOAD_8PF, 0);
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// get old cal factor
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//old_cal = si5351.get_correction();
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si5351.set_correction(0);
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// start on target frequency
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si5351.set_pll(SI5351_PLL_FIXED, SI5351_PLLA);
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si5351.set_freq(target_freq, SI5351_PLL_FIXED, SI5351_CLK0);
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}
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void loop()
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{
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si5351.update_status();
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if (si5351.dev_status.SYS_INIT == 1) {
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Serial.println("Initialising Si5351, you shouldn't see many of these!");
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delay(500);
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} else {
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cal_factor = 0;
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// Serial.print("Old cal factor was: ");
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// Serial.println(old_cal);
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// Serial.println("Cal factor now set to 0");
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// si5351.set_correction(0);
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Serial.println();
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Serial.println(F("Adjust until your frequency counter reads as close to 10 MHz as possible"));
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vfo_interface();
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Serial.print(F("Calibration factor is "));
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Serial.println(cal_factor);
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Serial.println("Setting calibration factor");
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si5351.set_correction(cal_factor);
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Serial.println("Resetting target frequency");
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si5351.set_freq(target_freq, SI5351_PLL_FIXED, SI5351_CLK0);
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}
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}
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static void flush_input(void)
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{
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while (Serial.available() > 0)
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Serial.read();
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}
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static void vfo_interface(void)
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{
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rx_freq = target_freq;
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Serial.println(F(" Up: r t y u i o p"));
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Serial.println(F(" Down: f g h j k l ;"));
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Serial.println(F(" Hz: 0.01 0.1 1 10 100 1K 10k"));
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while (1) {
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if (Serial.available() > 0) {
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char c = Serial.read();
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switch (c) {
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case 'q':
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flush_input();
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return;
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case 'r': rx_freq += 1; break;
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case 'f': rx_freq -= 1; break;
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case 't': rx_freq += 10; break;
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case 'g': rx_freq -= 10; break;
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case 'y': rx_freq += 100; break;
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case 'h': rx_freq -= 100; break;
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case 'u': rx_freq += 1000; break;
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case 'j': rx_freq -= 1000; break;
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case 'i': rx_freq += 10000; break;
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case 'k': rx_freq -= 10000; break;
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case 'o': rx_freq += 100000; break;
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case 'l': rx_freq -= 100000; break;
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case 'p': rx_freq += 1000000; break;
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case ';': rx_freq -= 1000000; break;
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default:
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// Do nothing
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continue;
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}
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si5351.set_freq(rx_freq,SI5351_PLL_FIXED,SI5351_CLK0);
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cal_factor = (int32_t)(target_freq - rx_freq);
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Serial.print("Current difference:");
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Serial.println(cal_factor);
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}
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}
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}
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56
si5351/examples/si5351example/si5351example.ino
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56
si5351/examples/si5351example/si5351example.ino
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/*
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* si5351example.ino - Simple example of using Si5351Arduino library
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*
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* Copyright (C) 2015 Jason Milldrum <milldrum@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "si5351.h"
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#include "Wire.h"
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Si5351 si5351;
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void setup()
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{
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// Start serial and initialize the Si5351
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Serial.begin(57600);
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si5351.init(SI5351_CRYSTAL_LOAD_8PF, 0);
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// Set CLK0 to output 14 MHz with a fixed PLL frequency
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si5351.set_pll(SI5351_PLL_FIXED, SI5351_PLLA);
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si5351.set_freq(1400000000ULL, SI5351_PLL_FIXED, SI5351_CLK0);
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// Set CLK1 to output 20 MHz
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si5351.set_freq(2000000000ULL, 0ULL, SI5351_CLK1);
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}
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void loop()
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{
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// Read the Status Register and print it every 10 seconds
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si5351.update_status();
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Serial.print("SYS_INIT: ");
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Serial.print(si5351.dev_status.SYS_INIT);
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Serial.print(" LOL_A: ");
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Serial.print(si5351.dev_status.LOL_A);
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Serial.print(" LOL_B: ");
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Serial.print(si5351.dev_status.LOL_B);
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Serial.print(" LOS: ");
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Serial.print(si5351.dev_status.LOS);
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Serial.print(" REVID: ");
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Serial.println(si5351.dev_status.REVID);
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delay(10000);
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}
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92
si5351/examples/si5351phase/si5351phase.ino
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92
si5351/examples/si5351phase/si5351phase.ino
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/*
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* si5351phase.ino - Example for setting phase with Si5351Arduino library
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*
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* Copyright (C) 2015 Jason Milldrum <milldrum@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Setting the phase of a clock requires that you manually set the PLL and
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* take the PLL frequency into account when calculation the value to place
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* in the phase register. As shown on page 10 of Silicon Labs Application
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* Note 619 (AN619), the phase register is a 7-bit register, where a bit
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* represents a phase difference of 1/4 the PLL period. Therefore, the best
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* way to get an accurate phase setting is to make the PLL an even multiple
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* of the clock frequency, depending on what phase you need.
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*
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* If you need a 90 degree phase shift (as in many RF applications), then
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* it is quite easy to determine your parameters. Pick a PLL frequency that
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* is an even multiple of your clock frequency (remember that the PLL needs
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* to be in the range of 600 to 900 MHz). Then to set a 90 degree phase shift,
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* you simply enter that multiple into the phase register. Remember when
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* setting multiple outputs to be phase-related to each other, they each need
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* to be referenced to the same PLL.
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*/
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#include "si5351.h"
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#include "Wire.h"
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Si5351 si5351;
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void setup()
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{
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// Start serial and initialize the Si5351
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Serial.begin(57600);
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si5351.init(SI5351_CRYSTAL_LOAD_8PF, 0);
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// We will output 14.1 MHz on CLK0 and CLK1.
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// A PLLA frequency of 705 MHz was chosen to give an even
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// divisor by 14.1 MHz.
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unsigned long long freq = 1410000000ULL;
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unsigned long long pll_freq = 70500000000ULL;
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// Set PLLA to the chosen frequency
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si5351.set_pll(pll_freq, SI5351_PLLA);
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// Set CLK0 and CLK1 to use PLLA as the MS source
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si5351.set_ms_source(SI5351_CLK0, SI5351_PLLA);
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si5351.set_ms_source(SI5351_CLK1, SI5351_PLLA);
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// Set CLK0 and CLK1 to output 14.1 MHz with a fixed PLL frequency
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si5351.set_freq(freq, pll_freq, SI5351_CLK0);
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si5351.set_freq(freq, pll_freq, SI5351_CLK1);
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// Now we can set CLK1 to have a 90 deg phase shift by entering
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// 50 in the CLK1 phase register, since the ratio of the PLL to
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// the clock frequency is 50.
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si5351.set_phase(SI5351_CLK0, 0);
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si5351.set_phase(SI5351_CLK1, 50);
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// We need to reset the PLL before they will be in phase alignment
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si5351.pll_reset(SI5351_PLLA);
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}
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void loop()
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{
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// Read the Status Register and print it every 10 seconds
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si5351.update_status();
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Serial.print("SYS_INIT: ");
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Serial.print(si5351.dev_status.SYS_INIT);
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Serial.print(" LOL_A: ");
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Serial.print(si5351.dev_status.LOL_A);
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Serial.print(" LOL_B: ");
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Serial.print(si5351.dev_status.LOL_B);
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Serial.print(" LOS: ");
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Serial.print(si5351.dev_status.LOS);
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Serial.print(" REVID: ");
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Serial.println(si5351.dev_status.REVID);
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delay(10000);
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}
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