main.cpp

/*
 * std lib headers
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>

/*
 * libmaple headers
 */
#include <wirish.h>
#include <dma.h> // direct memory access

/*
 * nano Open Sound Control lib
 * continuous music controller lib
 */
extern "C" {
#include <nosc.h>
#include <cmc.h>
#include <fix16.h>
#include <dma_udp.h>
}

uint8_t mac [] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
uint8_t ip [] = {192, 168, 1, 177};
uint8_t gateway [] = {192, 168, 1, 1};
uint8_t subnet [] = {255, 255, 255, 0};
uint8_t sock = 0;
uint16_t port = 3333;

uint8_t remote_ip [] = {192, 168, 1, 255};
uint16_t remote_port = 3333;

static uint8_t buf [1024];

HardwareSPI spi(2);

extern "C"{
void initSS ()
{
    pinMode (BOARD_SPI2_NSS_PIN, OUTPUT);
}

void setSS ()
{
    digitalWrite (BOARD_SPI2_NSS_PIN, 0); // enable wiz820io
}

void resetSS ()
{
    digitalWrite (BOARD_SPI2_NSS_PIN, 1); // dsable wiz820io
}
}

void
loop ()
{
    dma_udp_send (sock, buf, 1024);
}

void
setup ()
{
  pinMode (BOARD_BUTTON_PIN, INPUT);
  pinMode (BOARD_LED_PIN, OUTPUT);

  delay(300);

  spi.begin (SPI_18MHZ, MSBFIRST, 0);
    initSS ();

    dma_init (DMA1);
    spi_rx_dma_enable (SPI2); // Enables TX DMA on SPI2
    spi_tx_dma_enable (SPI2); // Enables TX DMA on SPI2

    // set up dma_udp
    dma_udp_init (mac, ip, gateway, subnet);
    dma_udp_begin (sock, port);
    dma_udp_set_remote (sock, remote_ip, remote_port);
}

__attribute__ ((constructor)) void
premain ()
{
  init ();
}

int
main (void)
{
  setup ();

  while (true)
    loop ();

  return 0;
}