Renesas MCU Program 1

SH-stick serial port emulator, the study of Renesas microcontroller, or the simplest program to start, LED on and off, button control, equivalent to C language Hello world! The program includes the following parts: system initialization (FRQCR); I/O initialization; LED initialization; main program

//#include "typedefine.h"
#ifdef __cplusplus
//#include                         // Remove the comment when you use ios                  
//_SINT ios_base::Init::init_cnt;       // Remove the comment when you use ios
#endif
#ifdef __cplusplus
extern "C" {
void abort(void);
#endif
void main(void);
#ifdef __cplusplus
}
#endif

#include "iodefine.h"
#include "machine.h"

VOID InitClock( );
VOID InitPort( );
VOID InitLED( );
VOID InitKey( );
VOID Delay();
VOID Flaled();
VOID main( ){

InitClock(); //Initialize the clock
InitPort(); //Initialize the port function
InitLED(); //Initialize the LED port
InitKey(); //Initialize the key interrupt (IRQ0)

while(1)
{
   if(INTC.IRQSR.BIT.IRQ0F==1) //Judge whether an IRQ0 falling edge interrupt occurs
   {
    INTC.IRQSR.BIT.IRQ0F=0; //If an interrupt occurs, clear the interrupt flag
    if(INTC.IRQSR.BIT.IRQ0F==0) //Read the interrupt flag again to ensure that the interrupt flag is cleared before taking the next step
    {
     Flaled();
    }}

/*/
VOID Flaled( )
{ 
   PE.DRL.WORD = 0x05FF; // 所有LED点亮
   Delay(3000);
   PE.DRL.WORD = 0xFA20; // 关所有LED
   Delay(3000);
}
//

VOID Delay(unsigned int z)
{
unsigned int i=0,j=0;
for(i=z;i>0;i--)
{
   for(j=1000;j>0;j--);
}

}

//
VOID InitClock(){
CPG.FRQCR.WORD = 0x16DB; //Use 48MHz as internal clock and 24MHz as MTU2 clock
}

/*

//
VOID InitPort(){
PFC.PACRL1.BIT.PA2MD = 3; //PA2 is used as IRQ0 input function.
PFC.PBCRL2.BIT.PB5MD = 1; //PB5 is used as IRQ3 input function.
PFC.PEIORL.BIT.B5 = 1; //PE5 is used as output port
}

//
VOID InitLED(){
// PE.DRL.WORD = 0x05FF; // LEDs are all on
PFC.PEIORL.WORD |= 0xFA00; // PE15,14,13,12,11,9 are used as general I/O ports
}

//
VOID InitKey(){
INTC.IRQCR.BIT.IRQ0S = 1; //Detect interrupt request on falling edge
INTC.IPRA.BIT._IRQ0 = 9; //Set interrupt priority of IRQ0
}

#ifdef __cplusplus
void abort(void)
{

}
#endif