www.pudn.com > LPC2148_IAR_LPC2148.zip > main.c

/************************************************************************* 
 * 
 *    Used with ICCARM and AARM. 
 * 
 *    (c) Copyright IAR Systems 2005 
 * 
 *    File name   : main.c 
 *    Description : main module 
 * 
 *    History : 
 *    1. Data        : June, 04 2005 
 *       Author      : Stanimir Bonev 
 *       Description : Create 
 * 
 * Jumpers: 
 *  PWR_J   - depend of power source 
 *  PWM/DAC - 2-3 (PWM) 
 *  DBG     - present 
 * 
 * The example implements USB audio device with one output and one input. 
 * 
 *    $Revision: 1.1.2.1 $ 
 **************************************************************************/ 
#include "includes.h" 
 
#define LCD_BACKLIGHT_ON()    (IO0SET_bit.P0_21 = 1) 
#define LCD_BACKLIGHT_OFF()   (IO0CLR_bit.P0_21 = 1) 
#define LCD_BACKLIGHT_INIT()  (PINSEL1_bit.P0_21 = 0, IO0DIR_bit.P0_21 = 1, IO0CLR_bit.P0_21 = 1) 
 
/************************************************************************* 
 * Function Name: irq_handler 
 * Parameters: none 
 * 
 * Return: none 
 * 
 * Description: IRQ handler 
 * 
 *************************************************************************/ 
__irq __arm void irq_handler (void) 
{ 
void (*interrupt_function)(); 
unsigned int vector; 
 
  vector = VICVectAddr;     // Get interrupt vector. 
  interrupt_function = (void(*)())vector; 
  if(interrupt_function != NULL) 
  { 
    interrupt_function();  // Call vectored interrupt function. 
  } 
  else 
  { 
    VICVectAddr = 0;      // Clear interrupt in VIC. 
  } 
} 
 
/************************************************************************* 
 * Function Name: SetTickFlag 
 * Parameters: none 
 * 
 * Return: none 
 * 
 * Description: Set arg 
 *		 
 *************************************************************************/ 
void SetTickFlag (void* arg) 
{ 
Int32U* pFlag = arg; 
  *pFlag = 1; 
} 
 
/************************************************************************* 
 * Function Name: Dly100us 
 * Parameters: void *arg 
 * 
 * Return: none 
 * 
 * Description: Timer1 CH0 subroutine - delay [100us] 
 *		 
 *************************************************************************/ 
void Dly100us(void *arg) 
{ 
volatile Int32U Flag = 0; 
Int32U Delay = (int)arg; 
  // Stop Timer 1 
  TIMER_Stop(TIMER1); 
  // Reset Timer 1 counter 
  TIMER_Reset(TIMER1); 
  // Set action - match module CH0 
  TIMER_SetMatchAction(TIMER1, CH0, TimerAction_Interrupt | TimerAction_StopTimer, 
  Delay usec_T1*100, SetTickFlag, (void*)&Flag, DONOTHING); 
  // Start Timer 1 
  TIMER_Start(TIMER1); 
  // Wait expire of delay 
  while(Flag == 0); 
} 
 
/************************************************************************* 
 * Function Name: main 
 * Parameters: none 
 * 
 * Return: none 
 * 
 * Description: main 
 * 
 *************************************************************************/ 
void main() 
{ 
  SYS_Init(FOSC, FCCLK, VPBDIV1, USER_FLASH, 0xB27E7FFF,0x80FFFFFF,0xFFFFFFFF,0); 
  VIC_Init(); 
  VIC_SetProtectionMode(UserandPrivilegedMode); 
  // Init Dly 100 ms - Timer1 
  TIMER_Init(TIMER1, TIMER_PRECISION); 
  //  Dly 100 ms interrupt registered 
  VIC_SetVectoredIRQ(TIMER1_ISR,VIC_Slot2,VIC_TIMER1); 
  VIC_EnableInt(1<