Diff: mbed-src/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/gpio_irq_api.c

Revision:

1:9d3b497333c0

Parent:

0:638edba3adf6

--- a/mbed-src/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/gpio_irq_api.c	Mon Jan 11 02:32:24 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,127 +0,0 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2013 Nordic Semiconductor
- *
- * 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 "mbed_error.h"
-
-#define CHANNEL_NUM    31
-
-static uint32_t channel_ids[CHANNEL_NUM] = {0}; //each pin will be given an id, if id is 0 the pin can be ignored.
-static uint8_t channel_enabled[CHANNEL_NUM] = {0};
-static uint32_t portRISE = 0;
-static uint32_t portFALL = 0;
-static gpio_irq_handler irq_handler;
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-void GPIOTE_IRQHandler(void)
-{
-    volatile uint32_t newVal = NRF_GPIO->IN;
-
-    if ((NRF_GPIOTE->EVENTS_PORT != 0) && ((NRF_GPIOTE->INTENSET & GPIOTE_INTENSET_PORT_Msk) != 0)) {
-        NRF_GPIOTE->EVENTS_PORT = 0;
-
-        for (uint8_t i = 0; i<31; i++) {
-            if (channel_ids[i]>0) {
-                if (channel_enabled[i]) {
-                    if( ((newVal>>i)&1)  && ( ( (NRF_GPIO->PIN_CNF[i] >>GPIO_PIN_CNF_SENSE_Pos) & GPIO_PIN_CNF_SENSE_Low) != GPIO_PIN_CNF_SENSE_Low) && ( (portRISE>>i)&1) ){
-                        irq_handler(channel_ids[i], IRQ_RISE);
-                    } else if ((((newVal >> i) & 1) == 0) &&
-                               (((NRF_GPIO->PIN_CNF[i] >> GPIO_PIN_CNF_SENSE_Pos) & GPIO_PIN_CNF_SENSE_Low) == GPIO_PIN_CNF_SENSE_Low) &&
-                               ((portFALL >> i) & 1)) {
-                        irq_handler(channel_ids[i], IRQ_FALL);
-                    }
-                }
-
-                if (NRF_GPIO->PIN_CNF[i] & GPIO_PIN_CNF_SENSE_Msk) {
-                    NRF_GPIO->PIN_CNF[i] &= ~(GPIO_PIN_CNF_SENSE_Msk);
-
-                    if (newVal >> i & 1) {
-                        NRF_GPIO->PIN_CNF[i] |= (GPIO_PIN_CNF_SENSE_Low << GPIO_PIN_CNF_SENSE_Pos);
-                    } else {
-                        NRF_GPIO->PIN_CNF[i] |= (GPIO_PIN_CNF_SENSE_High << GPIO_PIN_CNF_SENSE_Pos);
-                    }
-                }
-            }
-        }
-    }
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-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->ch                 = pin;
-    NRF_GPIOTE->EVENTS_PORT = 0;
-    channel_ids[pin]        = id;
-    channel_enabled[pin]    = 1;
-    NRF_GPIOTE->INTENSET    = GPIOTE_INTENSET_PORT_Set << GPIOTE_INTENSET_PORT_Pos;
-
-    NVIC_SetPriority(GPIOTE_IRQn, 3);
-    NVIC_EnableIRQ  (GPIOTE_IRQn);
-    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)
-{
-    NRF_GPIO->PIN_CNF[obj->ch] &= ~(GPIO_PIN_CNF_SENSE_Msk);
-    if (enable) {
-        if (event == IRQ_RISE) {
-            portRISE |= (1 << obj->ch);
-        } else if (event == IRQ_FALL) {
-            portFALL |= (1 << obj->ch);
-        }
-    } else {
-        if (event == IRQ_RISE) {
-            portRISE &= ~(1 << obj->ch);
-        } else if (event == IRQ_FALL) {
-            portFALL &= ~(1 << obj->ch);
-        }
-    }
-
-    if (((portRISE >> obj->ch) & 1) || ((portFALL >> obj->ch) & 1)) {
-        if ((NRF_GPIO->IN >> obj->ch) & 1) {
-            NRF_GPIO->PIN_CNF[obj->ch] |= (GPIO_PIN_CNF_SENSE_Low << GPIO_PIN_CNF_SENSE_Pos);    // | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos);
-        } else {
-            NRF_GPIO->PIN_CNF[obj->ch] |= (GPIO_PIN_CNF_SENSE_High << GPIO_PIN_CNF_SENSE_Pos);     //| (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos);
-        }
-    }
-}
-
-void gpio_irq_enable(gpio_irq_t *obj)
-{
-    channel_enabled[obj->ch] = 1;
-}
-
-void gpio_irq_disable(gpio_irq_t *obj)
-{
-    channel_enabled[obj->ch] = 0;
-}