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@ -18,7 +18,7 @@
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#ifdef TARGET_LPC1768
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#include "../../../macros.h"
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#include "../../core/macros.h"
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#include "../HAL.h"
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#include "arduino.h"
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#include "pinmapping.h"
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@ -32,34 +32,31 @@ typedef void (*interruptCB)(void);
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static interruptCB callbacksP0[GNUM];
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static interruptCB callbacksP2[GNUM];
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extern "C" void GpioEnableInt(uint32_t port, uint32_t pin, uint32_t mode);
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extern "C" void GpioDisableInt(uint32_t port, uint32_t pin);
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extern "C" void GpioEnableInt(const uint32_t port, const uint32_t pin, const uint32_t mode);
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extern "C" void GpioDisableInt(const uint32_t port, const uint32_t pin);
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//void deadloop(void) {}
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/* Configure PIO interrupt sources */
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static void __initialize() {
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int i;
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for (i=0; i<GNUM; i++) {
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for (uint8_t i = 0; i < GNUM; i++) {
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callbacksP0[i] = 0;
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callbacksP2[i] = 0;
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}
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NVIC_EnableIRQ(EINT3_IRQn);
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}
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void attachInterrupt(uint32_t pin, void (*callback)(void), uint32_t mode)
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{
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void attachInterrupt(const uint32_t pin, void (*callback)(void), uint32_t mode) {
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static int enabled = 0;
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if (!INTERRUPT_PIN(pin)) return;
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if (!enabled) {
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__initialize();
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enabled = 1;
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++enabled;
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}
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uint8_t myport = pin_map[pin].port;
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uint8_t mypin = pin_map[pin].pin;
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uint8_t myport = pin_map[pin].port,
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mypin = pin_map[pin].pin;
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if (myport == 0)
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callbacksP0[mypin] = callback;
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@ -70,12 +67,11 @@ void attachInterrupt(uint32_t pin, void (*callback)(void), uint32_t mode)
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GpioEnableInt(myport,mypin,mode);
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}
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void detachInterrupt(uint32_t pin)
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{
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void detachInterrupt(const uint32_t pin) {
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if (!INTERRUPT_PIN(pin)) return;
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uint8_t myport = pin_map[pin].port;
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uint8_t mypin = pin_map[pin].pin;
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const uint8_t myport = pin_map[pin].port,
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mypin = pin_map[pin].pin;
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// Disable interrupt
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GpioDisableInt(myport, mypin);
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@ -91,56 +87,52 @@ void detachInterrupt(uint32_t pin)
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extern "C" void GpioEnableInt(uint32_t port, uint32_t pin, uint32_t mode) {
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//pin here is the processor pin, not logical pin
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if (port == 0) {
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LPC_GPIOINT->IO0IntClr = (1 << pin);
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LPC_GPIOINT->IO0IntClr = _BV(pin);
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if (mode == RISING) {
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LPC_GPIOINT->IO0IntEnR |= (1<<pin);
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LPC_GPIOINT->IO0IntEnF &= ~(1<<pin);
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SBI(LPC_GPIOINT->IO0IntEnR, pin);
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CBI(LPC_GPIOINT->IO0IntEnF, pin);
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}
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else if (mode == FALLING) {
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LPC_GPIOINT->IO0IntEnF |= (1<<pin);
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LPC_GPIOINT->IO0IntEnR &= ~(1<<pin);
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SBI(LPC_GPIOINT->IO0IntEnF, pin);
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CBI(LPC_GPIOINT->IO0IntEnR, pin);
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}
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else if (mode == CHANGE) {
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LPC_GPIOINT->IO0IntEnR |= (1<<pin);
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LPC_GPIOINT->IO0IntEnF |= (1<<pin);
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SBI(LPC_GPIOINT->IO0IntEnR, pin);
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SBI(LPC_GPIOINT->IO0IntEnF, pin);
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}
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}
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else {
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LPC_GPIOINT->IO2IntClr = (1 << pin);
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LPC_GPIOINT->IO2IntClr = _BV(pin);
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if (mode == RISING) {
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LPC_GPIOINT->IO2IntEnR |= (1<<pin);
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LPC_GPIOINT->IO2IntEnF &= ~(1<<pin);
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SBI(LPC_GPIOINT->IO2IntEnR, pin);
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CBI(LPC_GPIOINT->IO2IntEnF, pin);
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}
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else if (mode == FALLING) {
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LPC_GPIOINT->IO2IntEnF |= (1<<pin);
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LPC_GPIOINT->IO2IntEnR &= ~(1<<pin);
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SBI(LPC_GPIOINT->IO2IntEnF, pin);
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CBI(LPC_GPIOINT->IO2IntEnR, pin);
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}
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else if (mode == CHANGE) {
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LPC_GPIOINT->IO2IntEnR |= (1<<pin);
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LPC_GPIOINT->IO2IntEnF |= (1<<pin);
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SBI(LPC_GPIOINT->IO2IntEnR, pin);
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SBI(LPC_GPIOINT->IO2IntEnF, pin);
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}
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}
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}
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extern "C" void GpioDisableInt(uint32_t port, uint32_t pin)
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{
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extern "C" void GpioDisableInt(const uint32_t port, const uint32_t pin) {
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if (port == 0) {
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LPC_GPIOINT->IO0IntEnR &= ~(1<<pin);
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LPC_GPIOINT->IO0IntEnF &= ~(1<<pin);
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LPC_GPIOINT->IO0IntClr = 1 << pin;
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CBI(LPC_GPIOINT->IO0IntEnR, pin);
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CBI(LPC_GPIOINT->IO0IntEnF, pin);
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LPC_GPIOINT->IO0IntClr = _BV(pin);
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}
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else {
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LPC_GPIOINT->IO2IntEnR &= ~(1<<pin);
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LPC_GPIOINT->IO2IntEnF &= ~(1<<pin);
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LPC_GPIOINT->IO2IntClr = 1 << pin;
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CBI(LPC_GPIOINT->IO2IntEnR, pin);
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CBI(LPC_GPIOINT->IO2IntEnF, pin);
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LPC_GPIOINT->IO2IntClr = _BV(pin);
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}
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}
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bool isPowerOf2(unsigned int n)
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{
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bool isPowerOf2(unsigned int n) {
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return n == 1 || (n & (n - 1)) == 0;
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}
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#if 0
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@ -150,79 +142,49 @@ extern "C" void EINT3_IRQHandler () {
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//NVIC_ClearPendingIRQ(EINT3_IRQn);
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}
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#else
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extern "C" void EINT3_IRQHandler(void)
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{
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extern "C" void EINT3_IRQHandler(void) {
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// Read in all current interrupt registers. We do this once as the
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// GPIO interrupt registers are on the APB bus, and this is slow.
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uint32_t rise0 = LPC_GPIOINT->IO0IntStatR;
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uint32_t fall0 = LPC_GPIOINT->IO0IntStatF;
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uint32_t rise2 = LPC_GPIOINT->IO2IntStatR;
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uint32_t fall2 = LPC_GPIOINT->IO2IntStatF;
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//Clear teh interrupts ASAP
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uint32_t rise0 = LPC_GPIOINT->IO0IntStatR,
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fall0 = LPC_GPIOINT->IO0IntStatF,
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rise2 = LPC_GPIOINT->IO2IntStatR,
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fall2 = LPC_GPIOINT->IO2IntStatF;
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// Clear the interrupts ASAP
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LPC_GPIOINT->IO0IntClr = LPC_GPIOINT->IO2IntClr = 0xFFFFFFFF;
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NVIC_ClearPendingIRQ(EINT3_IRQn);
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uint8_t bitloc;
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if (rise0 == 0)
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goto fall0;
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/* multiple pins changes happened.*/
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while(rise0 > 0) { //Continue as long as there are interrupts pending
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bitloc = 31 - __CLZ(rise0); //CLZ returns number of leading zeros, 31 minus that is location of first pending interrupt
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if (callbacksP0[bitloc]!=0)
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callbacksP0[bitloc]();
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rise0 -= 1<<bitloc;
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}
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fall0:
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if (fall0==0)
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goto rise2;
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/* if (isPowerOf2(fall0) && callbacksP0[31 - __CLZ(rise0)])
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callbacksP0[31 - __CLZ(rise0)](); */
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//LPC_GPIOINT->IO0IntClr = fall0;*/
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else {
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while(fall0 > 0) {
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bitloc = 31 - __CLZ(fall0);
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if (callbacksP0[bitloc]!=0)
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callbacksP0[bitloc]();
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fall0 -= 1<<bitloc;
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}
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}
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rise2:
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if (rise2==0)
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goto fall2;
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/*if ((rise2 & (rise2 - 1)) == 0) {
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callbacksP2[rise2]();
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//LPC_GPIOINT->IO2IntClr = rise2;
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}*/
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else {
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while(rise2 > 0) {
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bitloc = 31 - __CLZ(rise2);
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if (callbacksP2[bitloc]!=0)
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callbacksP2[bitloc]();
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//LPC_GPIOINT->IO2IntClr = 1 << bitloc;
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rise2 -= 1<<bitloc;
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if (rise0) while (rise0 > 0) { // Continue as long as there are interrupts pending
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const uint8_t bitloc = 31 - __CLZ(rise0); //CLZ returns number of leading zeros, 31 minus that is location of first pending interrupt
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if (callbacksP0[bitloc] != NULL) callbacksP0[bitloc]();
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rise0 -= _BV(bitloc);
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}
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if (fall0) while (fall0 > 0) {
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const uint8_t bitloc = 31 - __CLZ(fall0);
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if (callbacksP0[bitloc] != NULL) callbacksP0[bitloc]();
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fall0 -= _BV(bitloc);
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}
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fall2:
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if (fall2==0)
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goto end;
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/*if ((fall2 & (fall2 - 1)) == 0) {
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callbacksP2[fall2]();
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//LPC_GPIOINT->IO2IntClr = fall2;
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}*/
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else {
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while(fall2 > 0) {
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bitloc = 31 - __CLZ(fall2);
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if (callbacksP2[bitloc]!=0)
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callbacksP2[bitloc]();
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if (rise2) while(rise2 > 0) {
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const uint8_t bitloc = 31 - __CLZ(rise2);
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if (callbacksP2[bitloc] != NULL) callbacksP2[bitloc]();
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//LPC_GPIOINT->IO2IntClr = 1 << bitloc;
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fall2 -= 1<<bitloc;
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rise2 -= _BV(bitloc);
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}
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if (fall2) while (fall2 > 0) {
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const uint8_t bitloc = 31 - __CLZ(fall2);
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if (callbacksP2[bitloc] != NULL) callbacksP2[bitloc]();
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//LPC_GPIOINT->IO2IntClr = 1 << bitloc;
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fall2 -= _BV(bitloc);
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}
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end:
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//NVIC_ClearPendingIRQ(EINT3_IRQn);
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//LPC_GPIOINT->IO0IntClr = LPC_GPIOINT->IO2IntClr = 0xFFFFFFFF;
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//NVIC_ClearPendingIRQ(EINT3_IRQn);
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return; //silences warning
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}
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}
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#endif
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#endif // TARGET_LPC1768
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Scott Lahteine
7 years ago