--- /dev/null
+/* 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"
+
+#if DEVICE_INTERRUPTIN
+
+#include "gpio_api.h"
+#include "fsl_gpio_hal.h"
+#include "fsl_port_hal.h"
+#include "mbed_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;
+ uint32_t port_addrs[] = PORT_BASE_ADDRS;
+
+ for (i = 0; i < 32; i++) {
+ if (PORT_HAL_IsPinIntPending(port_addrs[port], i)) {
+ uint32_t id = channel_ids[ch_base + i];
+ if (id == 0) {
+ continue;
+ }
+
+ gpio_irq_event event = IRQ_NONE;
+ uint32_t gpio_addrs[] = GPIO_BASE_ADDRS;
+ switch (BR_PORT_PCRn_IRQC(port_addrs[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_ReadPinInput(gpio_addrs[port], i)) ? (IRQ_RISE) : (IRQ_FALL);
+ break;
+ }
+ if (event != IRQ_NONE) {
+ irq_handler(id, event);
+ }
+ }
+ }
+ PORT_HAL_ClearPortIntFlag(port_addrs[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 = 0;
+ uint32_t vector = (uint32_t)gpio_irqA;
+ IRQn_Type irq_n = PORTA_IRQn;
+ 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.");
+ 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) {
+ uint32_t port_addrs[] = PORT_BASE_ADDRS;
+ port_interrupt_config_t irq_settings = kPortIntDisabled;
+
+ switch (BR_PORT_PCRn_IRQC(port_addrs[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_SetPinIntMode(port_addrs[obj->port], obj->pin, irq_settings);
+ PORT_HAL_ClearPinIntFlag(port_addrs[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;
+ }
+}
+
+#endif
projects / qmk_firmware.git / blobdiff