sp5wwp

void AT86_Write(const uint16_t addr, const uint8_t val)
{
	uint8_t tx[3]={(addr>>8)|(1<<7), addr&0xFF, val}; //write enable

	GPIOA->BSRR=(1<<(4+16));
	HAL_SPI_Transmit(&hspi1, tx, 3, 1);
	GPIOA->BSRR=(1<<4);
	HAL_Delay(2);
}

sp5wwp

#!/bin/bash

if [ "$#" -lt 1 ]; then
    echo "Not enough parameters."
	exit
fi

mkdir $1
cd $1

sp5wwp

delay_ms(250);
WM8960_Write(0x0F, 0x1FF); delay_ms(250); //reset

WM8960_Write(0x34, 0x018); //PLL prescale=2

WM8960_Write(0x04, 0x3B1); //clocking

//WM8960_Write(0x07, (1<<1)); //16-bit, I2S format
WM8960_Write(0x07, (1<<0)); //16-bit, left justified MSB first format

sp5wwp

--I2S sample source - 1kHz sinewave
--8kHz, 16-bit, left-aligned, MSB first
--clk     - 12MHz input clock
--i2s_clk - 400kHz main clock
--lr_clk  - 8kHz channel clock
--outp    - data output

library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.std_logic_arith.all;

sp5wwp

/*
 * M17 baseband interpolator
 *
 * Wojciech Kaczmarski SP5WWP
 * M17 Project, Nov 2022
 */

#include <stdio.h>
#include <stdint.h>
#include <unistd.h>

sp5wwp

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% root-Nyquist (M) filter design                        %
% Source:                                               %
% https://my.ece.utah.edu/~farhang/Nyquist_M_r1.pdf     %
% Edited by Wojciech SP5WWP to work with rcosdesign()   %
%                                                       %
% parameters:                                           %
% N: filter order (filter length = N+1)                 %
% M: number of samples per symbol period                %
% alpha: rolloff factor (range 0 to 1)                  %

sp5wwp

clear; clc;

G1=23;         %G_1 polynomial in octal notation
G2=35;         %G_2 -//-
K=5;           %convolutional encoder constraint length
symbols=10000; %test message length in symbols
depth=11;      %bit resolution of the soft decoder
head=20;       %run-up for the root-nyquist filter in symbols
span=8;        %rnyq filter span
sps=10;        %samples per symbol

sp5wwp

//consts
const uint8_t cc1200_tx_settings[50*3] =
{
	0x00, 0x01, 0x08,
	0x00, 0x03, 0x09,
	0x00, 0x08, 0x1F,
	0x00, 0x0A, 0xC8, //deviation (for RX can be set to lower value like 0x9F)
	0x00, 0x0B, 0x00,
	0x00, 0x0C, 0x5D,
	0x00, 0x0D, 0x00,

sp5wwp

"""
Embedded Python Blocks:

Each time this file is saved, GRC will instantiate the first class it finds
to get ports and parameters of your block. The arguments to __init__  will
be the parameters. All of them are required to have default values!
"""

import numpy as np
from gnuradio import gr