Implemented wspr test
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a83f1346de
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2bc9b77ac4
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@ -4,8 +4,8 @@ ISPPORT ?= /dev/kaboard
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VERSION = 0.1
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HEADERS = include/twi.h include/si5351.h
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SRC = main.c twi.c si5351.c
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HEADERS = include/twi.h include/si5351.h include/wspr.h
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SRC = main.c twi.c si5351.c wspr.c
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TARGET = cube-kl
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OBJDIR = bin
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@ -31,6 +31,11 @@ enum si5351_reg {
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};
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struct si5351_params {
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uint32_t p1;
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uint32_t p2;
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uint32_t p3;
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};
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static inline uint8_t si5351_write8(uint8_t reg, uint8_t value) {
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uint8_t data[3] = {reg, value};
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@ -42,8 +47,12 @@ void si5351_ms_enable_output(enum si5351_multisynth synth);
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void si5351_ms_disable_output(enum si5351_multisynth synth);
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void si5351_ms_set_source(enum si5351_multisynth synth, enum si5351_pll pll);
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void si5351_ms_set_freq(enum si5351_multisynth synth, uint32_t freq);
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uint8_t si5351_write_params(uint8_t base, uint32_t p1, uint32_t p2, uint32_t p3);
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uint8_t si5351_write_params(uint8_t base, struct si5351_params params);
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static inline void si5351_ms_write_params(enum si5351_multisynth synth, struct si5351_params params) {
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si5351_write_params(SI5351_MULTISYNTH_BASE[synth], params);
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}
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#endif
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@ -0,0 +1,45 @@
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#ifndef __WSPR_H__
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#define __WSPR_H__ __WSPR_H__
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#include <stdint.h>
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#include "si5351.h"
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// For PLL with 800MHz
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static const struct si5351_params WSPR_SYMBOLS[4] = {
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// 7040100.000000: 113 + 44687 / 70401
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// actual: 7040100.000000
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{14033, 17455, 70401},
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// 7040101.464844: 113 + 447801 / 705503
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// actual: 7040101.464844
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{14033, 172785, 705503},
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// 7040102.929688: 113 + 38515 / 60682
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// actual: 7040102.929688
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{14033, 14678, 60682},
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// 7040104.394531: 113 + 123233 / 194166
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// actual: 7040104.394531
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{14033, 46378, 194166},
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};
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static const uint8_t WSPR_LENGTH = 162;
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static const uint16_t WSPR_PERIOD = 683;
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// DL1SSK at JN39we
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static uint8_t default_wspr_msg[162] = {
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1, 1, 0, 0, 2, 0, 0, 2, 1, 0, 0, 0, 1, 3, 3, 2, 2, 2, 3, 2, 0, 1, 0, 3, 1, 1, 1, 0, 2,
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2, 0, 2, 2, 0, 3, 0, 0, 1, 0, 3, 2, 0, 0, 0, 0, 0, 3, 0, 1, 1, 0, 0, 3, 1, 2, 1, 0, 2,
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2, 3, 1, 2, 1, 2, 2, 2, 2, 3, 3, 2, 1, 2, 1, 2, 1, 2, 3, 2, 0, 3, 2, 0, 1, 0, 3, 3, 0,
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2, 2, 1, 1, 2, 1, 0, 1, 0, 2, 0, 1, 2, 2, 2, 0, 0, 3, 2, 2, 3, 0, 0, 1, 3, 3, 2, 3, 3,
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0, 2, 3, 1, 2, 1, 0, 2, 2, 3, 3, 3, 0, 2, 2, 0, 2, 1, 2, 1, 2, 0, 1, 3, 0, 0, 0, 0, 0,
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2, 0, 3, 1, 0, 1, 2, 3, 1, 2, 2, 2, 1, 1, 0, 0, 2
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};
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void wspr_transmit(enum si5351_multisynth synth, uint8_t *msg);
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#endif
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@ -3,6 +3,7 @@
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#include "twi.h"
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#include "si5351.h"
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#include "wspr.h"
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int main(void) {
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@ -10,16 +11,16 @@ int main(void) {
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si5351_init(25000000, 800000000, 500000000);
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si5351_ms_set_source(SI5351_MS0, SI5351_PLLA);
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uint32_t base = 7165000;
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uint32_t ppm_err = 9;
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uint32_t err = base * ppm_err / 1000000;
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uint32_t target = base - err;
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si5351_ms_set_freq(SI5351_MS0, target);
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si5351_ms_enable_output(SI5351_MS0);
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//si5351_ms_set_freq(SI5351_MS0, 7040100);
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//si5351_ms_enable_output(SI5351_MS0);
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//si5351_ms_write_params(SI5351_MS0, WSPR_SYMBOLS[3]);
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wspr_transmit(SI5351_MS0, default_wspr_msg);
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while(1);
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}
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@ -3,7 +3,7 @@ from fractions import Fraction
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from math import floor
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PLL_FREQ = 900.0 * 10**6
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PLL_FREQ = 800.0 * 10**6
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SYMBOL_COUNT = 4
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# http://www.g4jnt.com/wspr_coding_process.pdf
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@ -17,7 +17,7 @@ MAX_DENOM = 0x0FFFFF
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def main():
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print("struct si5351_params wspr_symbols[%d] = {" % SYMBOL_COUNT)
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print("struct si5351_params WSPR_SYMBOLS[%d] = {" % SYMBOL_COUNT)
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for i in range(0, SYMBOL_COUNT):
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symbol_freq = Fraction(BASE_FREQ) + Fraction(i) * FREQ_SHIFT
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@ -30,15 +30,17 @@ def main():
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c = divider.denominator
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print("\t// %f: %d + %d / %d" % (symbol_freq, a, b, c))
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actual = PLL_FREQ / (a + b/c)
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print("\t// actual: %f" % actual)
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# See https://www.silabs.com/documents/public/application-notes/AN619.pdf
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p1 = 128 * a + floor(128 * b/c) + 512
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p1 = 128 * a + floor(128 * b/c) - 512
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p2 = 128 * b - c * floor(128 * b/c)
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p3 = c
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print("\t{%d, %d, %d}," % (p1, p2, p3))
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print("}")
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print("};")
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if __name__ == '__main__':
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main()
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@ -27,10 +27,13 @@ void si5351_init(uint32_t freq_xtal, uint32_t freq_a, uint32_t freq_b) {
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uint32_t c = 0x0FFFFF;
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uint32_t a = (uint32_t) fdiv;
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uint32_t b = (uint32_t) ((uint64_t) rm * (uint64_t) c / (uint64_t) freq_xtal);
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uint32_t p1 = 128 * a + (128 * b / c) - 512;
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uint32_t p2 = 128 * b - c * (128 * b / c);
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uint32_t p3 = c;
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si5351_write_params(SI5351_PLL_BASE_ADDR[i], p1, p2, p3);
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struct si5351_params params = {
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128 * a + (128 * b / c) - 512,
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128 * b - c * (128 * b / c),
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c
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};
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si5351_write_params(SI5351_PLL_BASE_ADDR[i], params);
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}
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}
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@ -64,25 +67,27 @@ void si5351_ms_set_freq(enum si5351_multisynth synth, uint32_t freq) {
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uint32_t a = fdiv;
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uint32_t b = (uint32_t) ((uint64_t) rm * (uint64_t) c / freq);
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uint32_t p1 = 128 * a + (128 * b / c) - 512;
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uint32_t p2 = 128 * b - c * (128 * b / c);
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uint32_t p3 = c;
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si5351_write_params(SI5351_MULTISYNTH_BASE[synth], p1, p2, p3);
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struct si5351_params params = {
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128 * a + (128 * b / c) - 512,
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128 * b - c * (128 * b / c),
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c
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};
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si5351_write_params(SI5351_MULTISYNTH_BASE[synth], params);
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}
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uint8_t si5351_write_params(uint8_t base, uint32_t p1, uint32_t p2, uint32_t p3) {
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uint8_t si5351_write_params(uint8_t base, struct si5351_params params) {
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uint8_t data[9] = {
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base,
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(p3 & 0x00FF00) >> 8,
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p3 & 0x0000FF,
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(p1 & 0x030000) >> 16,
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(p1 & 0x00FF00) >> 8,
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p1 & 0x0000FF,
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((p3 & 0x0F0000) >> 12) | ((p2 & 0x0F0000) >> 16),
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(p2 & 0x00FF00) >> 8,
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p2 & 0x0000FF
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(params.p3 & 0x00FF00) >> 8,
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params.p3 & 0x0000FF,
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(params.p1 & 0x030000) >> 16,
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(params.p1 & 0x00FF00) >> 8,
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params.p1 & 0x0000FF,
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((params.p3 & 0x0F0000) >> 12) | ((params.p2 & 0x0F0000) >> 16),
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(params.p2 & 0x00FF00) >> 8,
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params.p2 & 0x0000FF
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};
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return twi_write(SI5351_ADDRESS, data, 9);
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}
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@ -0,0 +1,14 @@
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#include "wspr.h"
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#include <util/delay.h>
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void wspr_transmit(enum si5351_multisynth synth, uint8_t *msg) {
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si5351_ms_enable_output(synth);
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for(uint8_t i = 0; i < WSPR_LENGTH; i++) {
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uint8_t sym = msg[i];
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si5351_ms_write_params(synth, WSPR_SYMBOLS[sym]);
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_delay_ms(WSPR_PERIOD);
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}
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si5351_ms_disable_output(synth);
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}
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