DanGdl

Multicast:
https://gist.github.com/hostilefork/f7cae3dc33e7416f2dd25a402857b6c6
https://web.cs.wpi.edu/~claypool/courses/4514-B99/samples/multicast.c

https://www.cs.unc.edu/~jeffay/dirt/FAQ/comp249-001-F99/mcast-socket.html -> drop multicast membership

Reflection in C:
https://stackoverflow.com/questions/7674255/get-list-of-c-structure-members

DanGdl

//
// Simple listener.c program for UDP multicast
//
// Adapted from:
// http://ntrg.cs.tcd.ie/undergrad/4ba2/multicast/antony/example.html
//
// Changes:
// * Compiles for Windows as well as Linux
// * Takes the port and group on the command line
//

DanGdl

Tasks for C course.
Common requirements:
- don't use external libraries (if something else not specified)
- build system make/cmake (must be in every task)
- compilation with options '-O0 -g3 -Wall -Wextra -Wpedantic -std=c11'
- error handling
- all task must be checked with valgrind for memory leaks: 'valgrind --leak-check=full --show-leak-kinds=all --track-origins=yes --verbose /path/to/your/executable' (or with log file: 'valgrind --leak-check=full --show-leak-kinds=all --track-origins=yes --verbose --log-file=valgrind-out.txt /path/to/your/executable')


!!!!!

DanGdl

#ifndef MATRIXN_H_
#define MATRIXN_H_

#ifdef __cplusplus
extern "C" {
#endif

typedef unsigned long int dimen_t;

DanGdl

void get_console_message(char* const buffer, unsigned int len_max) {
	uint32_t count_symbols = 0;
	printf("Please enter a message (max size 1024 symbols):\r\n");
	while (1) {
		uint8_t c;
		HAL_StatusTypeDef status = HAL_UART_Receive(&huart3, &c, 1, HAL_MAX_DELAY);
		if (c == '\r') {
			HAL_UART_Transmit(&huart3, &c, 1, HAL_MAX_DELAY);
			c = '\n';
			HAL_UART_Transmit(&huart3, &c, 1, HAL_MAX_DELAY);

DanGdl

RM_OLD_IMAGE = "1"
INHERIT += "rm_work"

IMAGE_INSTALL:append = " git python3"


# Also you can specify an amount of threads to use for build (default value: BB_NUMBER_THREADS = "${@oe.utils.cpu_count()}"):
#BB_NUMBER_THREADS = "4"
#PARALLEL_MAKE - number of processes for -j option (for gcc)

DanGdl

void q1_SPI_ping_pong() {
	printf("\r\n\r\n\r\nQ1 Ping pong on SPI\r\n");
	char message[] = "That's a SPI message";
	char buffer1[128] = { '\0' };
	char buffer2[128] = { '\0' };
	while(1) {
		HAL_StatusTypeDef status = HAL_SPI_Receive_IT(SPI_S, (uint8_t*) buffer1, LEN_STR(message));
		if (status != HAL_OK) {
			printf("Failed to receiveIT on SPI_S: %d, error 0x%"PRIX32"\r\n", status, HAL_SPI_GetError(SPI_S));
		}

DanGdl

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>

#include "i2c.h"
#include "usart.h"
#include "rtg_main.h"

DanGdl

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/spi/spidev.h>

/*
	To read data from an SPI (Serial Peripheral Interface) device in Linux, you can use the spidev driver. Here are the basic steps:

DanGdl

Guide:
https://stackoverflow.com/questions/70277481/how-to-access-xilinx-axi-dma-from-linux
https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/1027702787/Linux+DMA+From+User+Space+2.0

Non xilinx driver:
https://github.com/bperez77/xilinx_axidma
Driver: https://github.com/Xilinx/linux-xlnx/blob/master/drivers/dma/xilinx/xilinx_dma.c

DMA test:
https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18842337/Linux+Soft+DMA+Driver