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#include <LPC17xx.h>
//#include "lpc_types.h"
#define FALSE 0
#define TRUE 1
#include "GPIO.h"
static LPC_GPIO_TypeDef (* const LPC_GPIO[5]) = { LPC_GPIO0, LPC_GPIO1, LPC_GPIO2, LPC_GPIO3, LPC_GPIO4 };
void GPIOSetValue( uint32_t portNum, uint32_t bitPosi, uint32_t bitVal )
{
if (bitVal == 0)
{
LPC_GPIO[portNum]->FIOCLR = (1<<bitPosi);
}
else if (bitVal >= 1)
{
LPC_GPIO[portNum]->FIOSET = (1<<bitPosi);
}
}
void GPIOSetDir( uint32_t portNum, uint32_t bitPosi, uint32_t dir )
{
if(dir)
LPC_GPIO[portNum]->FIODIR |= 1<<bitPosi;
else
LPC_GPIO[portNum]->FIODIR &= ~(1<<bitPosi);
}
void GPIOSetPull( uint32_t portNum, uint32_t bitPosi, uint32_t dir)
{
if (dir == 0) { //no Pull
dir = 10;
} else if(dir == 1){ //Pull up
dir = 00;
} else if(dir == 2){ //Pull down
dir = 11;
}
switch (portNum)
{
case 0:
if (bitPosi < 16 ) {
bitPosi = bitPosi * 2;
LPC_PINCON->PINMODE0 |= dir<<bitPosi;
} else if (bitPosi > 15){
bitPosi = bitPosi - 16;
bitPosi = bitPosi * 2;
LPC_PINCON->PINMODE1 |= dir<<bitPosi;
}
break;
case 1:
if (bitPosi < 16 ) {
bitPosi = bitPosi * 2;
LPC_PINCON->PINMODE2 |= dir<<bitPosi;
} else if (bitPosi > 15){
bitPosi = bitPosi - 16;
bitPosi = bitPosi * 2;
LPC_PINCON->PINMODE3 |= dir<<bitPosi;
}
break;
case 2:
if (bitPosi < 14 ) {
bitPosi = bitPosi * 2;
LPC_PINCON->PINMODE4 |= dir<<bitPosi;
}
break;
case 3:
if (bitPosi == 25){
LPC_PINCON->PINMODE7 |= dir<<18;
}else if (bitPosi == 26){
LPC_PINCON->PINMODE7 |= dir<<20;
}
break;
case 4:
if (bitPosi == 28){
LPC_PINCON->PINMODE9 |= dir<<24;
}else if (bitPosi == 29){
LPC_PINCON->PINMODE9 |= dir<<26;
}
}
}
uint32_t GPIOGetValue (uint32_t portNum, uint32_t bitPosi)
{
uint32_t val;
LPC_GPIO[portNum]->FIOMASK = ~(1<<bitPosi);
val = LPC_GPIO[portNum]->FIOPIN;
val = val >> bitPosi;
LPC_GPIO[portNum]->FIOMASK = 0x00000000;
return val;
}
void GPIOSetInterrupt ( uint32_t portNum, uint32_t bitPosi, uint32_t dir )
{
// Dir is 0 for falling edge interrupt and 1 for rising edge interrupt
if (portNum == 0)
{
if (dir == 0)
{
LPC_GPIOINT->IO0IntEnF |= (1<<bitPosi);
}
else if (dir == 1)
{
LPC_GPIOINT->IO0IntEnR |= (1<<bitPosi);
}
}
else if (portNum == 2)
{
if (dir == 0)
{
LPC_GPIOINT->IO2IntEnF |= (1<<bitPosi);
}
else if (dir == 1)
{
LPC_GPIOINT->IO2IntEnR |= (1<<bitPosi);
}
}
NVIC_EnableIRQ(EINT3_IRQn);
}
void GPIOClearInterrupt( void )
{
LPC_GPIOINT->IO0IntClr = 0x7FFF8FFF;
LPC_GPIOINT->IO2IntClr = 0x3fff;
}
uint32_t GPIOCheckInterrupts ( uint32_t portNum, uint32_t dir)
{
// Dir is 0 for falling edge interrupt and 1 for rising edge interrupt
if (portNum == 0)
{
if (dir == 0)
{
return LPC_GPIOINT->IO0IntStatF;
}
else if (dir == 1)
{
return LPC_GPIOINT->IO0IntStatR;
}
}
else if (portNum == 2)
{
if (dir == 0)
{
return LPC_GPIOINT->IO0IntStatF;
}
else if (dir == 1)
{
return LPC_GPIOINT->IO0IntStatR;
}
}
return FALSE;
}
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