muele-marlin/Marlin/src/HAL/HAL_LPC1768/main.cpp

#ifdef TARGET_LPC1768

// ---------------------
// Userspace entry point
// ---------------------
extern void setup();
extern void loop();

extern "C" {
#include <lpc17xx_gpio.h>
}

#include <usb/usb.h>
#include <usb/usbcfg.h>
#include <usb/usbhw.h>
#include <usb/usbcore.h>
#include <usb/cdc.h>
#include <usb/cdcuser.h>
#include <usb/mscuser.h>

extern "C" {
#include <debug_frmwrk.h>
#include <chanfs/diskio.h>
#include <chanfs/ff.h>
}

#include "fastio.h"
#include "HAL_timers.h"
#include <stdio.h>
#include <stdarg.h>
#include "arduino.h"
#include "serial.h"

static __INLINE uint32_t SysTick_Config(uint32_t ticks) {
  if (ticks > SysTick_LOAD_RELOAD_Msk)
    return (1); /* Reload value impossible */

  SysTick->LOAD = (ticks & SysTick_LOAD_RELOAD_Msk) - 1; /* set reload register */
  NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(0, 0, 0)); /* set Priority for Cortex-M3 System Interrupts */
  SysTick->VAL = 0; /* Load the SysTick Counter Value */
  SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk |
  SysTick_CTRL_TICKINT_Msk |
  SysTick_CTRL_ENABLE_Msk; /* Enable SysTick IRQ and SysTick Timer */
  return (0); /* Function successful */
}
extern "C" {
extern void disk_timerproc(void);
volatile uint32_t _millis;
void SysTick_Handler(void) {
  ++_millis;
  disk_timerproc(); /* Disk timer process */
}
}

// runs after clock init and before global static constructors
extern "C" void SystemPostInit() {
  _millis = 0;     // initialise the millisecond counter value;
  SysTick_Config(SystemCoreClock / 1000);     // start millisecond global counter
  GPIO_SetDir(4, 1UL << 28, 1);

  for (int i = 0; i < 4; ++i) {
    GPIO_SetValue(4, 1UL << 28);
    delay(100);
    GPIO_ClearValue(4, 1UL << 28);
    delay(100);
  }
}

extern uint32_t MSC_SD_Init(uint8_t pdrv);
extern HalSerial usb_serial;
int main(void) {
  debug_frmwrk_init();

  (void)MSC_SD_Init(0);
  USB_Init();                               // USB Initialization
  USB_Connect(TRUE);                        // USB Connect

  volatile uint32_t usb_timeout = millis() + 2000;
  while (!USB_Configuration && millis() < usb_timeout) {
    delay(50);
    TOGGLE(13);     // Flash fast while USB initialisation completes
  }

  usb_serial.printf("\n\nRe-ARM (LPC1768 @ %dMhz) USB Initialised\n", SystemCoreClock / 1000000);

  HAL_timer_init();

  setup();
  while (true) {
    loop();
  }
}

#endif // TARGET_LPC1768