mongoose/examples/stm32/nucleo-f746zg-make-baremetal-builtin/main.c

// Copyright (c) 2022-2023 Cesanta Software Limited
// All rights reserved

#include "hal.h"
#include "mongoose.h"
#include "net.h"

#define BLINK_PERIOD_MS 1000  // LED blinking period in millis

static volatile uint64_t s_ticks;  // Milliseconds since boot
void SysTick_Handler(void) {       // SyStick IRQ handler, triggered every 1ms
  s_ticks++;
}

uint64_t mg_millis(void) {  // Let Mongoose use our uptime function
  return s_ticks;           // Return number of milliseconds since boot
}

bool mg_random(void *buf, size_t len) {  // Use on-board RNG
  for (size_t n = 0; n < len; n += sizeof(uint32_t)) {
    uint32_t r = rng_read();
    memcpy((char *) buf + n, &r, n + sizeof(r) > len ? len - n : sizeof(r));
  }
  return true;
}

static void timer_fn(void *arg) {
  gpio_toggle(LED);  // Blink LED
  (void) arg;
}

int main(void) {
  gpio_output(LED);               // Setup blue LED
  uart_init(UART_DEBUG, 115200);  // Initialise debug printf
  ethernet_init();                // Initialise ethernet pins
  MG_INFO(("Starting, CPU freq %g MHz", (double) SystemCoreClock / 1000000));

  struct mg_mgr mgr;        // Initialise
  mg_mgr_init(&mgr);        // Mongoose event manager
  mg_log_set(MG_LL_DEBUG);  // Set log level
  mg_timer_add(&mgr, BLINK_PERIOD_MS, MG_TIMER_REPEAT, timer_fn, NULL);

  MG_INFO(("Initialising application..."));
  web_init(&mgr);

  MG_INFO(("Starting event loop"));
  for (;;) {
    mg_mgr_poll(&mgr, 0);
  }

  return 0;
}