69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
|
/*
|
||
|
|
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
|
||
|
|
*
|
||
|
|
* This file is part of PortaPack.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
||
|
|
* any later version.
|
||
|
|
*
|
||
|
|
* This program 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 General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; see the file COPYING. If not, write to
|
||
|
|
* the Free Software Foundation, Inc., 51 Franklin Street,
|
||
|
|
* Boston, MA 02110-1301, USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "irq_lcd_frame.hpp"
|
||
|
|
|
||
|
|
#include "event_m0.hpp"
|
||
|
|
|
||
|
|
#include "ch.h"
|
||
|
|
#include "hal.h"
|
||
|
|
|
||
|
|
#include "portapack_hal.hpp"
|
||
|
|
|
||
|
|
static Thread* thread_lcd_frame_event = NULL;
|
||
|
|
|
||
|
|
static void pin_int4_interrupt_enable() {
|
||
|
|
thread_lcd_frame_event = chThdSelf();
|
||
|
|
nvicEnableVector(PIN_INT4_IRQn, CORTEX_PRIORITY_MASK(LPC43XX_PIN_INT4_IRQ_PRIORITY));
|
||
|
|
}
|
||
|
|
|
||
|
|
void lcd_frame_sync_configure() {
|
||
|
|
/* Positive edge sensitivity */
|
||
|
|
LPC_GPIO_INT->ISEL &= ~(1U << 4);
|
||
|
|
LPC_GPIO_INT->SIENR = (1U << 4);
|
||
|
|
LPC_GPIO_INT->CIENF = (1U << 4);
|
||
|
|
LPC_GPIO_INT->IST = (1U << 4);
|
||
|
|
|
||
|
|
LPC_SCU->PINTSEL1 =
|
||
|
|
(LPC_SCU->PINTSEL1 & ~(0xffU << 0))
|
||
|
|
| (portapack::gpio_lcd_te.pad() << 0)
|
||
|
|
| (portapack::gpio_lcd_te.port() << 5)
|
||
|
|
;
|
||
|
|
|
||
|
|
pin_int4_interrupt_enable();
|
||
|
|
}
|
||
|
|
|
||
|
|
extern "C" {
|
||
|
|
|
||
|
|
CH_IRQ_HANDLER(PIN_INT4_IRQHandler) {
|
||
|
|
CH_IRQ_PROLOGUE();
|
||
|
|
|
||
|
|
chSysLockFromIsr();
|
||
|
|
chEvtSignalI(thread_lcd_frame_event, EVT_MASK_LCD_FRAME_SYNC);
|
||
|
|
chSysUnlockFromIsr();
|
||
|
|
|
||
|
|
LPC_GPIO_INT->IST = (1U << 4);
|
||
|
|
|
||
|
|
CH_IRQ_EPILOGUE();
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|