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|
#include "gpio.h"
// IOCON:Cortex-M0 depend Settings
//#ifdef __NXP_LPC1114
#define PORT_BIT_COUNT 12 // up to 12 I/O lines per port
#define PORT_COUNT 4 // up to 4 ports
const uint8_t IOCON_LUT[PORT_COUNT][PORT_BIT_COUNT] = {
{ 0x0C, 0x10, 0x1C, 0x2C, 0x30, 0x34, 0x4C, 0x50, 0x60, 0x64, 0x68, 0x74 },
{ 0x78, 0x7C, 0x80, 0x90, 0x94, 0xA0, 0xA4, 0xA8, 0x14, 0x38, 0x6C, 0x98 },
{ 0x08, 0x28, 0x5C, 0x8C, 0x40, 0x44, 0x00, 0x20, 0x24, 0x54, 0x58, 0x70 },
{ 0x84, 0x88, 0x9C, 0xAC, 0x3C, 0x48 }
};
#define IOCONAddress(port,bit) ((volatile uint16_t * const) (LPC_IOCON_BASE + IOCON_LUT[port][bit]))
#define SetIOCON(port, bit, ioconmask, ioconbits) \
*IOCONAddress((port),(bit)) = (*IOCONAddress((port),(bit)) & ~(ioconmask)) | (ioconbits)
typedef enum {
GPIO_DIR_INPUT = 0,
GPIO_DIR_OUTPUT = 1,
IOCON_MODE_MASK = (3<<3),
IOCON_MODE_PULLUP = (2<<3),
IOCON_MODE_PULLDOWN = (1<<3),
IOCON_MODE_REPEATER = (3<<3),
IOCON_MODE_INACTIVE = (0<<3),
IOCON_FUNC_MASK = 7,
IOCON_FUNC_0 = 0,
IOCON_FUNC_1 = 1,
IOCON_FUNC_2 = 2,
IOCON_FUNC_3 = 3,
IOCON_FUNC_4 = 4,
IOCON_FUNC_5 = 5,
IOCON_FUNC_6 = 6,
IOCON_FUNC_7 = 7,
IOCON_HYS_MASK = (1<<5),
IOCON_HYS_ENABLE = (1<<5),
IOCON_HYS_DISABLE = (0<<5),
IOCON_ADMODE_MASK = (1<<7),
IOCON_ADMODE_ANALOG = (0<<7),
IOCON_ADMODE_DIGITAL = (1<<7)
} IOCON_BITFIELD_ENUM;
//#endif
/* =======================================
* Macros and functions for Defining MARY's GPIO Assign
*
* CN1_7,8 : (PIO1_2,PIO1_1)
* should be C17,C18
*
* CN2_1...8 : (PIO1_4,PIO1_11,PIO1_7,PIO1_5,PIO3_2,PIO2_0,PIO1_6,PIO0_1)
* should be C21,C22,C23,C24,C25,C26,C27,C28
*
* CN3_1...8 : (PIO1_8,PIO0_3,PIO0_2,PIO3_4,PIO0_4,PIO3_5,PIO0_5,PIO1_7)
* should be C31,C32,C33,C34,C35,C36,C37,C38
*
* CN4_1...7 : (PIO1_9,PIO1_10,PIO0_6,PIO0_11,PIO0_8,PIO1_0,PIO0_9)
* should be C41,C42,C43,C44,C45,C46,C47
*
* see also mary_pinAssign[...] in "gpio.h"
* =======================================
*/
void pinMode(int pin,pinModeState state)
{
if(pin < 22) //arduinoPinAssign(0~21)
{
//IOCON settings use as GPIO
if((arduino_pinAssign[pin * 2]) == 0)//PIO0_X
{
switch(arduino_pinAssign[pin * 2 + 1])
{
case 11: //P0_11
SetIOCON(arduino_pinAssign[pin * 2], arduino_pinAssign[pin * 2 + 1], IOCON_FUNC_MASK, IOCON_FUNC_1);
break;
default: //P0_X
SetIOCON(arduino_pinAssign[pin * 2], arduino_pinAssign[pin * 2 + 1], IOCON_FUNC_MASK, IOCON_FUNC_0);
break;
}
}else if((arduino_pinAssign[pin * 2]) == 1)//PIO1_X
{
switch(arduino_pinAssign[pin * 2 + 1])
{
case _BIT0:
case _BIT1:
case _BIT2:
case _BIT3:
SetIOCON(arduino_pinAssign[pin * 2], arduino_pinAssign[pin * 2 + 1], IOCON_FUNC_MASK, IOCON_FUNC_1);
break;
default:
SetIOCON(arduino_pinAssign[pin * 2], arduino_pinAssign[pin * 2 + 1], IOCON_FUNC_MASK, IOCON_FUNC_0);
break;
}
}else //PIO2_X
{
SetIOCON(arduino_pinAssign[pin * 2], arduino_pinAssign[pin * 2 + 1], IOCON_FUNC_MASK, IOCON_FUNC_0);
}
if(state == OUTPUT) //OUTPUT
{
LPC_GPIO[ arduino_pinAssign[pin * 2] ]->DIR |= (1 << arduino_pinAssign[pin * 2 + 1]);
}else //INPUT
{
LPC_GPIO[ arduino_pinAssign[pin * 2] ]->DIR &= ~((1 << arduino_pinAssign[pin * 2 + 1]));
}
return;
}
if(pin < 100) return; //(20~99:reserved)
if(pin < 200) //maryPinAssign(100~119?)
{
pin = pin - 100;
//IOCON settings use as GPIO
if((mary_pinAssign[pin * 2]) == 0)//PIO0_X
{
switch(mary_pinAssign[pin * 2 + 1])
{
case 11: //P0_11
case 10: //P0_10
SetIOCON(mary_pinAssign[pin * 2], mary_pinAssign[pin * 2 + 1], IOCON_FUNC_MASK, IOCON_FUNC_1);
break;
default: //P0_X
SetIOCON(mary_pinAssign[pin * 2], mary_pinAssign[pin * 2 + 1], IOCON_FUNC_MASK, IOCON_FUNC_0);
break;
}
}else if((mary_pinAssign[pin * 2]) == 1)//PIO1_X
{
switch(mary_pinAssign[pin * 2 + 1])
{
case _BIT0:
case _BIT1:
case _BIT2:
case _BIT3:
SetIOCON(mary_pinAssign[pin * 2], mary_pinAssign[pin * 2 + 1], IOCON_FUNC_MASK, IOCON_FUNC_1);
break;
default:
SetIOCON(mary_pinAssign[pin * 2], mary_pinAssign[pin * 2 + 1], IOCON_FUNC_MASK, IOCON_FUNC_0);
break;
}
}
if(state == OUTPUT) //OUTPUT
{
LPC_GPIO[ mary_pinAssign[pin * 2] ]->DIR |= (1 << mary_pinAssign[pin * 2 + 1]);
}else //INPUT
{
LPC_GPIO[ mary_pinAssign[pin * 2] ]->DIR &= ~((1 << mary_pinAssign[pin * 2 + 1]));
}
}
return;
}
void digitalWrite(int pin,digitalWriteState state)
{
if(pin < 22) //arduinoPinAssign(0~21)
{
if(state == HIGH) //HIGH
{
if(LPC_GPIO[ arduino_pinAssign[pin * 2] ]->DIR & 1<<arduino_pinAssign[pin * 2 + 1])//pin is output
{
LPC_GPIO[ arduino_pinAssign[pin * 2] ]->MASKED_ACCESS[ (1 << arduino_pinAssign[pin * 2 + 1]) ] = (1 << arduino_pinAssign[pin * 2 + 1]);
}else//pin is input
{
SetIOCON(arduino_pinAssign[pin * 2], arduino_pinAssign[pin * 2 + 1], IOCON_MODE_MASK, IOCON_MODE_PULLUP);
}
}else //LOW
{
if(LPC_GPIO[ arduino_pinAssign[pin * 2] ]->DIR & 1<<arduino_pinAssign[pin * 2 + 1])//pin is output
{
LPC_GPIO[ arduino_pinAssign[pin * 2] ]->MASKED_ACCESS[ (1 << arduino_pinAssign[pin * 2 + 1]) ] &= ~((1 << arduino_pinAssign[pin * 2 + 1]));
}else // pin is input
{
SetIOCON(arduino_pinAssign[pin * 2], arduino_pinAssign[pin * 2 + 1], IOCON_MODE_MASK, IOCON_MODE_INACTIVE);
}
}
return;
}
if(pin < 100) return; //arduinoPinAssign(20~99:reserved)
if(pin < 200) //maryPinAssign(100~119?)
{
pin = pin - 100;
if(state == HIGH) //HIGH
{
if(LPC_GPIO[ mary_pinAssign[pin * 2] ]->DIR & 1<<mary_pinAssign[pin * 2 + 1])//pin is output
{
LPC_GPIO[ mary_pinAssign[pin * 2] ]->MASKED_ACCESS[ (1 << mary_pinAssign[pin * 2 + 1]) ] = (1 << mary_pinAssign[pin * 2 + 1]);
}else//pin is input
{
SetIOCON(mary_pinAssign[pin * 2], mary_pinAssign[pin * 2 + 1], IOCON_MODE_MASK, IOCON_MODE_PULLUP);
}
}else //LOW
{
if(LPC_GPIO[ mary_pinAssign[pin * 2] ]->DIR & 1<<mary_pinAssign[pin * 2 + 1])//pin is output
{
LPC_GPIO[ mary_pinAssign[pin * 2] ]->MASKED_ACCESS[ (1 << mary_pinAssign[pin * 2 + 1]) ] &= ~((1 << mary_pinAssign[pin * 2 + 1]));
}else // pin is input
{
SetIOCON(mary_pinAssign[pin * 2], mary_pinAssign[pin * 2 + 1], IOCON_MODE_MASK, IOCON_MODE_INACTIVE);
}
}
}
return;
}
int digitalRead(int pin)
{
volatile int readValue;
if(pin < 22) //arduinoPinAssign(0~21)
{
readValue = (LPC_GPIO[ arduino_pinAssign[pin * 2] ]->MASKED_ACCESS[ (1 << arduino_pinAssign[pin * 2 + 1]) ])? 1 : 0;
return readValue;
}
if(pin < 100) return 0; //(20~99:reserved)
if(pin < 200) //maryPinAssign(100~199?)
{
pin = pin - 100;
readValue = (LPC_GPIO[ mary_pinAssign[pin * 2] ]->MASKED_ACCESS[ (1 << mary_pinAssign[pin * 2 + 1]) ])? 1 : 0;
return readValue;
}
return 0;
}
/*****************************************************************************
** Function name: GPIOSetInterrupt
**
** Descriptions: Set interrupt sense, event, etc.
** edge or level, 0 is edge, 1 is level
** single or double edge, 0 is single, 1 is double
** active high or low, etc.
**
** parameters: pin num, bit position, sense, single/doube, polarity
** Returned value: None
**
*****************************************************************************/
void GPIOSetInterrupt(int pin, int sense, int single, int event) {
if (pin >= 0 && pin < 22) //arduinoPinAssign(0~21)
{
if (sense == 0) {
LPC_GPIO[arduino_pinAssign[pin * 2]]->IS &= ~((1 << arduino_pinAssign[pin * 2 + 1]));
/* single or double only applies when sense is 0(edge trigger). */
if (single == 0)
LPC_GPIO[arduino_pinAssign[pin * 2]]->IBE
&= ~((1 << arduino_pinAssign[pin * 2 + 1]));
else
LPC_GPIO[arduino_pinAssign[pin * 2]]->IBE
|= ((1 << arduino_pinAssign[pin * 2 + 1]));
} else
LPC_GPIO[arduino_pinAssign[pin * 2]]->IS |= ((1 << arduino_pinAssign[pin * 2 + 1]));
if (event == 0)
LPC_GPIO[arduino_pinAssign[pin * 2]]->IEV
&= ~((1 << arduino_pinAssign[pin * 2 + 1]));
else
LPC_GPIO[arduino_pinAssign[pin * 2]]->IEV |= ((1 << arduino_pinAssign[pin * 2 + 1]));
} else if (pin >= 22 && pin < 100) {
//(22~99:reserved)
} else if (pin >= 100 && pin < 200) //maryPinAssign(100~119?)
{
pin = pin - 100;
if (sense == 0) {
LPC_GPIO[mary_pinAssign[pin * 2]]->IS &= ~((1 << mary_pinAssign[pin * 2 + 1]));
/* single or double only applies when sense is 0(edge trigger). */
if (single == 0)
LPC_GPIO[mary_pinAssign[pin * 2]]->IBE &= ~((1 << mary_pinAssign[pin * 2 + 1]));
else
LPC_GPIO[mary_pinAssign[pin * 2]]->IBE |= ((1 << mary_pinAssign[pin * 2 + 1]));
} else
LPC_GPIO[mary_pinAssign[pin * 2]]->IS |= ((1 << mary_pinAssign[pin * 2 + 1]));
if (event == 0)
LPC_GPIO[mary_pinAssign[pin * 2]]->IEV &= ~((1 << mary_pinAssign[pin * 2 + 1]));
else
LPC_GPIO[mary_pinAssign[pin * 2]]->IEV |= ((1 << mary_pinAssign[pin * 2 + 1]));
}
return;
}
void GPIOIntEnable(int pin) {
if (pin >= 0 && pin < 22) //arduinoPinAssign(0~21)
{
LPC_GPIO[arduino_pinAssign[pin * 2]]->IE |= (1 << arduino_pinAssign[pin * 2 + 1]);
} else if (pin >= 22 && pin < 100) { //(20~99:reserved)
} else if (pin >= 100 && pin < 200) //maryPinAssign(100~119?)
{
pin = pin - 100;
LPC_GPIO[mary_pinAssign[pin * 2]]->IE |= (1 << mary_pinAssign[pin * 2 + 1]);
}
return;
}
void GPIOIntDisable(int pin) {
if (pin >= 0 && pin < 22) //arduinoPinAssign(0~21)
{
LPC_GPIO[arduino_pinAssign[pin * 2]]->IE &= ~((1 << arduino_pinAssign[pin * 2 + 1]));
} else if (pin >= 22 && pin < 100) {//(22~99:reserved)
} else if (pin >= 100 && pin < 200) //maryPinAssign(100~119?)
{
pin = pin - 100;
LPC_GPIO[mary_pinAssign[pin * 2]]->IE &= ~((1 << mary_pinAssign[pin * 2 + 1]));
}
return;
}
int GPIOIntStatus(int pin) {
int regVal = 0;
if (pin >= 0 && pin < 22) //arduinoPinAssign(0~21)
{
if (LPC_GPIO[arduino_pinAssign[pin * 2]]->MIS
& (1 << arduino_pinAssign[pin * 2 + 1])) {
regVal = 1;
}
} else if (pin >= 22 && pin < 100) { //(22~99:reserved)
} else if (pin >= 100 && pin < 200) //maryPinAssign(100~119?)
{
pin = pin - 100;
if (LPC_GPIO[mary_pinAssign[pin * 2]]->MIS
& (1 << mary_pinAssign[pin * 2 + 1])) {
regVal = 1;
}
}
return regVal;
}
void GPIOIntClear(int pin) {
if (pin >= 0 && pin < 22) //arduinoPinAssign(0~21)
{
LPC_GPIO[arduino_pinAssign[pin * 2]]->IC |= (1 << arduino_pinAssign[pin * 2 + 1]);
} else if (pin >= 22 && pin < 100) { //(22~99:reserved)
} else if (pin >= 100 && pin < 200) //maryPinAssign(100~119?)
{
pin = pin - 100;
LPC_GPIO[mary_pinAssign[pin * 2]]->IC |= (1 << mary_pinAssign[pin * 2 + 1]);
}
return;
}
|
