Import Mbed OS hard-float snapshot

targets/TARGET_Cypress/TARGET_PSOC6/cy_gpio_irq_api.c

@@ -0,0 +1,101 @@
+/*
+ * mbed Microcontroller Library
+ * Copyright (c) 2017-2018 Future Electronics
+ * Copyright (c) 2019, Arm Limited and affiliates.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 "mbed_assert.h"
+#include "mbed_error.h"
+#include "PinNames.h"
+#include "cyhal_gpio.h"
+#include "cyhal_hwmgr.h"
+#include "cy_gpio.h"
+#include "gpio_irq_api.h"
+
+#define GPIO_DEFAULT_IRQ_PRIORITY 5
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void cy_gpio_irq_handler_impl(void *handler_arg, cyhal_gpio_irq_event_t event)
+{
+    gpio_irq_t *obj = (gpio_irq_t *)handler_arg;
+    cyhal_gpio_irq_event_t masked = (cyhal_gpio_irq_event_t)(event & obj->mask);
+    void (*handler)(uint32_t, int) = (void (*)(uint32_t, int))obj->handler;
+    if (NULL != handler && CYHAL_GPIO_IRQ_NONE != masked) {
+        if (CYHAL_GPIO_IRQ_NONE != (masked & CYHAL_GPIO_IRQ_RISE)) {
+            (*handler)(obj->id, IRQ_RISE);
+        }
+        if (CYHAL_GPIO_IRQ_NONE != (masked & CYHAL_GPIO_IRQ_FALL)) {
+            (*handler)(obj->id, IRQ_FALL);
+        }
+    }
+}
+
+int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id)
+{
+    obj->pin = pin;
+    obj->handler = (void *)handler;
+    obj->id = id;
+    obj->mask = CYHAL_GPIO_IRQ_NONE;
+    if (pin != NC) {
+        gpio_irq_enable(obj);   // InterruptIn expects IRQ to be initially enabled
+    }
+    return pin != NC ? 0 : -1;
+}
+
+void gpio_irq_free(gpio_irq_t *obj)
+{
+    if (obj->pin != NC) {
+        gpio_irq_disable(obj);
+        cyhal_gpio_irq_enable(obj->pin, CYHAL_GPIO_IRQ_BOTH, false);
+    }
+    obj->pin = NC;
+    obj->handler = NULL;
+    obj->id = 0;
+    obj->mask = CYHAL_GPIO_IRQ_NONE;
+}
+
+void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
+{
+    cyhal_gpio_irq_event_t bits;
+    if (event == IRQ_RISE) {
+        bits = CYHAL_GPIO_IRQ_RISE;
+    } else if (event == IRQ_FALL) {
+        bits = CYHAL_GPIO_IRQ_FALL;
+    } else {
+        bits = CYHAL_GPIO_IRQ_NONE;
+    }
+    obj->mask = (cyhal_gpio_irq_event_t)(enable ? (obj->mask | bits) : (obj->mask & ~bits));
+    cyhal_gpio_irq_enable(obj->pin, obj->mask, true);
+}
+
+void gpio_irq_enable(gpio_irq_t *obj)
+{
+    MBED_ASSERT(obj->pin != NC);
+    cyhal_gpio_register_irq(obj->pin, GPIO_DEFAULT_IRQ_PRIORITY, &cy_gpio_irq_handler_impl, obj);
+}
+
+void gpio_irq_disable(gpio_irq_t *obj)
+{
+    MBED_ASSERT(obj->pin != NC);
+    cyhal_gpio_register_irq(obj->pin, GPIO_DEFAULT_IRQ_PRIORITY, NULL, NULL);
+}
+
+#ifdef __cplusplus
+}
+#endif