add HardwareSerial and SoftwareSerial for Re-ARM.
HardwareSerial has been tested on Uart0 (debug header) and Uart3 (i2c connector) Software Serial has been tested to work bi-directionally at 9600 and 115200 using pins 6 and 63 on J5, and unidirectionally (write only) at 250000. The code used to test was Teemuatlut's tmc2208 patch, and a few small changes to main used to echo recieved chars back to a host pc.
This commit is contained in:
kfazz
Scott Lahteine
224
Marlin/src/HAL/HAL_LPC1768/WInterrupts.cpp
Normal file
224
Marlin/src/HAL/HAL_LPC1768/WInterrupts.cpp
Normal file
@@ -0,0 +1,224 @@
|
||||
/*
|
||||
Copyright (c) 2011-2012 Arduino. All right reserved.
|
||||
|
||||
This library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
This library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||||
See the GNU Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with this library; if not, write to the Free Software
|
||||
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#include "../../../macros.h"
|
||||
#include "../HAL.h"
|
||||
#include "arduino.h"
|
||||
#include "pinmapping.h"
|
||||
//#include "HAL_timers.h"
|
||||
#include "fastio.h"
|
||||
|
||||
#define GNUM 31
|
||||
|
||||
typedef void (*interruptCB)(void);
|
||||
|
||||
static interruptCB callbacksP0[GNUM];
|
||||
static interruptCB callbacksP2[GNUM];
|
||||
|
||||
extern "C" void GpioEnableInt(uint32_t port, uint32_t pin, uint32_t mode);
|
||||
extern "C" void GpioDisableInt(uint32_t port, uint32_t pin);
|
||||
|
||||
//void deadloop(void) {}
|
||||
|
||||
/* Configure PIO interrupt sources */
|
||||
static void __initialize() {
|
||||
int i;
|
||||
for (i=0; i<GNUM; i++) {
|
||||
callbacksP0[i] = 0;
|
||||
callbacksP2[i] = 0;
|
||||
}
|
||||
NVIC_EnableIRQ(EINT3_IRQn);
|
||||
}
|
||||
|
||||
void attachInterrupt(uint32_t pin, void (*callback)(void), uint32_t mode)
|
||||
{
|
||||
static int enabled = 0;
|
||||
|
||||
if(!INTERRUPT_PIN(pin)) return;
|
||||
|
||||
if (!enabled) {
|
||||
__initialize();
|
||||
enabled = 1;
|
||||
}
|
||||
uint8_t myport = pin_map[pin].port;
|
||||
uint8_t mypin = pin_map[pin].pin;
|
||||
|
||||
|
||||
if (myport == 0 )
|
||||
callbacksP0[mypin] = callback;
|
||||
else
|
||||
callbacksP2[mypin] = callback;
|
||||
|
||||
// Enable interrupt
|
||||
GpioEnableInt(myport,mypin,mode);
|
||||
}
|
||||
|
||||
void detachInterrupt(uint32_t pin)
|
||||
{
|
||||
if(!INTERRUPT_PIN(pin)) return;
|
||||
|
||||
uint8_t myport = pin_map[pin].port;
|
||||
uint8_t mypin = pin_map[pin].pin;
|
||||
|
||||
// Disable interrupt
|
||||
GpioDisableInt(myport,mypin);
|
||||
|
||||
//unset callback
|
||||
if (myport == 0 )
|
||||
callbacksP0[mypin] = 0;
|
||||
else //if (myport == 2 )
|
||||
callbacksP2[mypin] = 0;
|
||||
}
|
||||
|
||||
|
||||
extern "C" void GpioEnableInt(uint32_t port, uint32_t pin, uint32_t mode) {
|
||||
//pin here is the processor pin, not logical pin
|
||||
if (port==0) {
|
||||
LPC_GPIOINT->IO0IntClr = (1 << pin);
|
||||
if (mode ==RISING) {
|
||||
LPC_GPIOINT->IO0IntEnR |= (1<<pin);
|
||||
LPC_GPIOINT->IO0IntEnF &= ~(1<<pin);
|
||||
}
|
||||
else if (mode==FALLING) {
|
||||
LPC_GPIOINT->IO0IntEnF |= (1<<pin);
|
||||
LPC_GPIOINT->IO0IntEnR &= ~(1<<pin);
|
||||
}
|
||||
else if (mode==CHANGE) {
|
||||
LPC_GPIOINT->IO0IntEnR |= (1<<pin);
|
||||
LPC_GPIOINT->IO0IntEnF |= (1<<pin);
|
||||
}
|
||||
}
|
||||
else{
|
||||
LPC_GPIOINT->IO2IntClr = (1 << pin);
|
||||
if (mode ==RISING) {
|
||||
LPC_GPIOINT->IO2IntEnR |= (1<<pin);
|
||||
LPC_GPIOINT->IO2IntEnF &= ~(1<<pin);
|
||||
}
|
||||
else if (mode==FALLING) {
|
||||
LPC_GPIOINT->IO2IntEnF |= (1<<pin);
|
||||
LPC_GPIOINT->IO2IntEnR &= ~(1<<pin);
|
||||
}
|
||||
else if (mode==CHANGE) {
|
||||
LPC_GPIOINT->IO2IntEnR |= (1<<pin);
|
||||
LPC_GPIOINT->IO2IntEnF |= (1<<pin);
|
||||
}
|
||||
}
|
||||
}
|
||||
extern "C" void GpioDisableInt(uint32_t port, uint32_t pin)
|
||||
{
|
||||
if (port==0){
|
||||
LPC_GPIOINT->IO0IntEnR &= ~(1<<pin);
|
||||
LPC_GPIOINT->IO0IntEnF &= ~(1<<pin);
|
||||
LPC_GPIOINT->IO0IntClr = 1 << pin;
|
||||
}
|
||||
else {
|
||||
LPC_GPIOINT->IO2IntEnR &= ~(1<<pin);
|
||||
LPC_GPIOINT->IO2IntEnF &= ~(1<<pin);
|
||||
LPC_GPIOINT->IO2IntClr = 1 << pin;
|
||||
}
|
||||
}
|
||||
|
||||
bool isPowerOf2(unsigned int n)
|
||||
|
||||
{
|
||||
|
||||
return n == 1 || (n & (n-1)) == 0;
|
||||
|
||||
}
|
||||
|
||||
#if 0
|
||||
extern "C" void EINT3_IRQHandler () {
|
||||
LPC_GPIOINT->IO0IntClr = LPC_GPIOINT->IO2IntClr = 0xFFFFFFFF;
|
||||
TOGGLE(13);
|
||||
//NVIC_ClearPendingIRQ(EINT3_IRQn);
|
||||
}
|
||||
#else
|
||||
extern "C" void EINT3_IRQHandler(void)
|
||||
{
|
||||
// Read in all current interrupt registers. We do this once as the
|
||||
// GPIO interrupt registers are on the APB bus, and this is slow.
|
||||
uint32_t rise0 = LPC_GPIOINT->IO0IntStatR;
|
||||
uint32_t fall0 = LPC_GPIOINT->IO0IntStatF;
|
||||
uint32_t rise2 = LPC_GPIOINT->IO2IntStatR;
|
||||
uint32_t fall2 = LPC_GPIOINT->IO2IntStatF;
|
||||
//Clear teh interrupts ASAP
|
||||
LPC_GPIOINT->IO0IntClr = LPC_GPIOINT->IO2IntClr = 0xFFFFFFFF;
|
||||
NVIC_ClearPendingIRQ(EINT3_IRQn);
|
||||
uint8_t bitloc;
|
||||
if (rise0 == 0)
|
||||
goto fall0;
|
||||
/* multiple pins changes happened.*/
|
||||
while(rise0 > 0) { //Continue as long as there are interrupts pending
|
||||
bitloc = 31 - __CLZ(rise0); //CLZ returns number of leading zeros, 31 minus that is location of first pending interrupt
|
||||
if (callbacksP0[bitloc]!=0)
|
||||
callbacksP0[bitloc]();
|
||||
rise0 -= 1<<bitloc;
|
||||
}
|
||||
fall0:
|
||||
if (fall0==0)
|
||||
goto rise2;
|
||||
/* if (isPowerOf2(fall0) && callbacksP0[31 - __CLZ(rise0)])
|
||||
callbacksP0[31 - __CLZ(rise0)](); */
|
||||
//LPC_GPIOINT->IO0IntClr = fall0;*/
|
||||
else {
|
||||
while(fall0 > 0) {
|
||||
bitloc = 31 - __CLZ(fall0);
|
||||
if (callbacksP0[bitloc]!=0)
|
||||
callbacksP0[bitloc]();
|
||||
fall0 -= 1<<bitloc;
|
||||
}
|
||||
}
|
||||
rise2:
|
||||
if (rise2==0)
|
||||
goto fall2;
|
||||
/*if ((rise2 & (rise2 - 1)) == 0) {
|
||||
callbacksP2[rise2]();
|
||||
//LPC_GPIOINT->IO2IntClr = rise2;
|
||||
}*/
|
||||
else {
|
||||
while(rise2 > 0) {
|
||||
bitloc = 31 - __CLZ(rise2);
|
||||
if (callbacksP2[bitloc]!=0)
|
||||
callbacksP2[bitloc]();
|
||||
//LPC_GPIOINT->IO2IntClr = 1 << bitloc;
|
||||
rise2 -= 1<<bitloc;
|
||||
}
|
||||
}
|
||||
fall2:
|
||||
if (fall2==0)
|
||||
goto end;
|
||||
/*if ((fall2 & (fall2 - 1)) == 0) {
|
||||
callbacksP2[fall2]();
|
||||
//LPC_GPIOINT->IO2IntClr = fall2;
|
||||
}*/
|
||||
else {
|
||||
while(fall2 > 0) {
|
||||
bitloc = 31 - __CLZ(fall2);
|
||||
if (callbacksP2[bitloc]!=0)
|
||||
callbacksP2[bitloc]();
|
||||
//LPC_GPIOINT->IO2IntClr = 1 << bitloc;
|
||||
fall2 -= 1<<bitloc;
|
||||
}
|
||||
end:
|
||||
//NVIC_ClearPendingIRQ(EINT3_IRQn);
|
||||
//LPC_GPIOINT->IO0IntClr = LPC_GPIOINT->IO2IntClr = 0xFFFFFFFF;
|
||||
//NVIC_ClearPendingIRQ(EINT3_IRQn);
|
||||
return; //silences warning
|
||||
}
|
||||
}
|
||||
#endif
|
||||
Reference in New Issue
Block a user