hal_lpc13uxx.c

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/**************************************************************************/
/**************************************************************************/

#include "common/common.h"
#include "hal.h"

#if TUSB_CFG_MCU == MCU_LPC13UXX

tusb_error_t hal_init(void)
{
    // TODO remove magic number
  LPC_SYSCON->SYSAHBCLKCTRL |= ((0x1<<14) | (0x1<<27)); /* Enable AHB clock to the USB block and USB RAM. */
  LPC_SYSCON->PDRUNCFG &= ~( BIT_(8) | BIT_(10) ); // enable USB PLL & USB transceiver

  /* Pull-down is needed, or internally, VBUS will be floating. This is to
  address the wrong status in VBUSDebouncing bit in CmdStatus register.  */
  // set PIO0_3 as USB_VBUS
  LPC_IOCON->PIO0_3   &= ~0x1F;
  LPC_IOCON->PIO0_3   |= (0x01<<0) | (1 << 3);            /* Secondary function VBUS */

  // set PIO0_6 as usb connect
  LPC_IOCON->PIO0_6   &= ~0x07;
  LPC_IOCON->PIO0_6   |= (0x01<<0);            /* Secondary function SoftConn */

  return TUSB_ERROR_NONE;
}

void USB_IRQHandler(void)
{
  tusb_isr(0);
}

#endif