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RIOT/cpu/lpc2387/include/cpu.h 1.2 KB
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  /*
   * Copyright (C) 2013, Freie Universitaet Berlin (FUB). All rights reserved.
   *
   * This file is subject to the terms and conditions of the GNU Lesser
   * General Public License v2.1. See the file LICENSE in the top level
   * directory for more details.
   */
  
  #ifndef CPU_H
  #define CPU_H
  
  /**
   * @defgroup    lpc2387     NXP LPC2387
   * @ingroup     cpu
   * @brief       NXP LPC2387 specific code
   * @{
   */
  
  #include <stdio.h>
  #include <stdbool.h>
  
  #include "lpc2387.h"
  #include "arm_cpu.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  extern uintptr_t __stack_start;     ///< end of user stack memory space
  
  /**
   * @brief Scale lpc2387 cpu speed
   */
  void lpc2387_pclk_scale(uint32_t source, uint32_t target, uint32_t *pclksel, uint32_t *prescale);
  
  
  /**
   * @brief install lpc2387 irq
   */
  bool install_irq(int IntNumber, void (*HandlerAddr)(void), int Priority);
  
  #ifdef MODULE_PERIPH
  void gpio_init_ports(void);
  #endif
  
  /**
   * @brief   Prints the current content of the link register (lr)
   */
  static inline void cpu_print_last_instruction(void)
  {
      register uint32_t *lr_ptr;
      __asm__ __volatile__("mov %0, lr" : "=r"(lr_ptr));
      printf("%p\n", (void*) lr_ptr);
  }
  
  #ifdef __cplusplus
  }
  #endif
  
  /** @} */
  #endif /* CPU_H */