mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_Freescale/TARGET_KSDK_MCUS/TARGET_K64F/gpio_irq_api.c
- Committer:
- mbed_official
- Date:
- 2014-04-03
- Revision:
- 148:213f3ebbe634
- Parent:
- 146:f64d43ff0c18
File content as of revision 148:213f3ebbe634:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <stddef.h> #include "cmsis.h" #include "gpio_irq_api.h" #include "gpio_api.h" #include "fsl_gpio_hal.h" #include "fsl_port_hal.h" #include "error.h" #define CHANNEL_NUM 160 static uint32_t channel_ids[CHANNEL_NUM] = {0}; static gpio_irq_handler irq_handler; #define IRQ_DISABLED (0) #define IRQ_RAISING_EDGE (9) #define IRQ_FALLING_EDGE (10) #define IRQ_EITHER_EDGE (11) static void handle_interrupt_in(PortName port, int ch_base) { uint32_t i; for (i = 0; i < 32; i++) { if (port_hal_read_pin_interrupt_flag(port, i)) { uint32_t id = channel_ids[ch_base + i]; if (id == 0) { continue; } gpio_irq_event event = IRQ_NONE; switch (BR_PORT_PCRn_IRQC(port, i)) { case IRQ_RAISING_EDGE: event = IRQ_RISE; break; case IRQ_FALLING_EDGE: event = IRQ_FALL; break; case IRQ_EITHER_EDGE: event = (gpio_hal_read_pin_input(port, i)) ? (IRQ_RISE) : (IRQ_FALL); break; } if (event != IRQ_NONE) { irq_handler(id, event); } } } port_hal_clear_port_interrupt_flag(port); } void gpio_irqA(void) {handle_interrupt_in(PortA, 0);} void gpio_irqB(void) {handle_interrupt_in(PortB, 32);} void gpio_irqC(void) {handle_interrupt_in(PortC, 64);} void gpio_irqD(void) {handle_interrupt_in(PortD, 96);} void gpio_irqE(void) {handle_interrupt_in(PortE, 128);} int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id) { if (pin == NC) { return -1; } irq_handler = handler; obj->port = pin >> GPIO_PORT_SHIFT; obj->pin = pin & 0x7F; uint32_t ch_base, vector; IRQn_Type irq_n; switch (obj->port) { case PortA: ch_base = 0; irq_n = PORTA_IRQn; vector = (uint32_t)gpio_irqA; break; case PortB: ch_base = 32; irq_n = PORTB_IRQn; vector = (uint32_t)gpio_irqB; break; case PortC: ch_base = 64; irq_n = PORTC_IRQn; vector = (uint32_t)gpio_irqC; break; case PortD: ch_base = 96; irq_n = PORTD_IRQn; vector = (uint32_t)gpio_irqD; break; case PortE: ch_base = 128; irq_n = PORTE_IRQn; vector = (uint32_t)gpio_irqE; break; default: error("gpio_irq only supported on port A-E.\n"); break; } NVIC_SetVector(irq_n, vector); NVIC_EnableIRQ(irq_n); obj->ch = ch_base + obj->pin; channel_ids[obj->ch] = id; return 0; } void gpio_irq_free(gpio_irq_t *obj) { channel_ids[obj->ch] = 0; } void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable) { port_interrupt_config_t irq_settings = kPortIntDisabled; switch (BR_PORT_PCRn_IRQC(obj->port, obj->pin)) { case IRQ_DISABLED: if (enable) irq_settings = (event == IRQ_RISE) ? (kPortIntRisingEdge) : (kPortIntFallingEdge); break; case IRQ_RAISING_EDGE: if (enable) { irq_settings = (event == IRQ_RISE) ? (kPortIntRisingEdge) : (kPortIntEitherEdge); } else { if (event == IRQ_FALL) irq_settings = kPortIntRisingEdge; } break; case IRQ_FALLING_EDGE: if (enable) { irq_settings = (event == IRQ_FALL) ? (kPortIntFallingEdge) : (kPortIntEitherEdge); } else { if (event == IRQ_RISE) irq_settings = kPortIntFallingEdge; } break; case IRQ_EITHER_EDGE: if (enable) { irq_settings = kPortIntEitherEdge; } else { irq_settings = (event == IRQ_RISE) ? (kPortIntFallingEdge) : (kPortIntRisingEdge); } break; } port_hal_configure_pin_interrupt(obj->port, obj->pin, irq_settings); port_hal_clear_pin_interrupt_flag(obj->port, obj->pin); } void gpio_irq_enable(gpio_irq_t *obj) { switch (obj->port) { case PortA: NVIC_EnableIRQ(PORTA_IRQn); break; case PortB: NVIC_EnableIRQ(PORTB_IRQn); break; case PortC: NVIC_EnableIRQ(PORTC_IRQn); break; case PortD: NVIC_EnableIRQ(PORTD_IRQn); break; case PortE: NVIC_EnableIRQ(PORTE_IRQn); break; } } void gpio_irq_disable(gpio_irq_t *obj) { switch (obj->port) { case PortA: NVIC_DisableIRQ(PORTA_IRQn); break; case PortB: NVIC_DisableIRQ(PORTB_IRQn); break; case PortC: NVIC_DisableIRQ(PORTC_IRQn); break; case PortD: NVIC_DisableIRQ(PORTD_IRQn); break; case PortE: NVIC_DisableIRQ(PORTE_IRQn); break; } }