Diff: src/irq.cpp

Revision:

11:a2dcf0ebb5b5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/irq.cpp	Mon Aug 03 17:21:20 2020 +0530
@@ -0,0 +1,166 @@
+/***************************************************************************//**
+ * @file  irq.cpp
+ * @brief Implementation of Interrupt No-OS platform driver interfaces
+********************************************************************************
+ * Copyright (c) 2020 Analog Devices, Inc.
+ *
+ * All rights reserved.
+ *
+ * This software is proprietary to Analog Devices, Inc. and its licensors.
+ * By using this software you agree to the terms of the associated
+ * Analog Devices Software License Agreement.
+*******************************************************************************/
+
+/******************************************************************************/
+/***************************** Include Files **********************************/
+/******************************************************************************/
+
+#include <stdio.h>
+#include <mbed.h>
+
+#include "platform_drivers.h"
+#include "irq_extra.h"
+#include "uart_extra.h"
+
+/******************************************************************************/
+/*************************** Types Declarations *******************************/
+/******************************************************************************/
+
+/******************************************************************************/
+/************************ Functions Declarations ******************************/
+/******************************************************************************/
+
+/******************************************************************************/
+/************************ Functions Definitions *******************************/
+/******************************************************************************/
+
+/**
+ * @brief	Initialized the controller for the peripheral interrupts
+ * @param	desc[in, out] - Pointer where the configured instance is stored
+ * @param	param[in] - Configuration information for the instance
+ * @return	SUCCESS in case of success, FAILURE otherwise.
+ */
+int32_t irq_ctrl_init(struct irq_ctrl_desc **desc,
+		      const struct irq_init_param *param)
+{
+	if (!desc || !param) {
+		return FAILURE;
+	}
+
+	irq_ctrl_desc *new_desc = (irq_ctrl_desc *)malloc(sizeof(irq_ctrl_desc));
+	if (!new_desc) {
+		return FAILURE;
+	}
+
+	mbed_irq_desc *new_mbed_desc = (mbed_irq_desc *)malloc(sizeof(mbed_irq_desc));
+	if (!new_mbed_desc) {
+		free(new_desc);
+		return FAILURE;
+	}
+
+	new_desc->irq_ctrl_id = param->irq_ctrl_id;
+
+	new_mbed_desc->int_mode = ((mbed_irq_init_param *)param->extra)->int_mode;
+	new_mbed_desc->int_obj_type = ((mbed_irq_init_param *)
+				       param->extra)->int_obj_type;
+
+	new_desc->extra = (irq_ctrl_desc *)new_mbed_desc;
+
+	*desc = new_desc;
+
+	return SUCCESS;
+}
+
+
+/**
+ * @brief	Free the resources allocated by irq_ctrl_init()
+ * @param	desc[in, out] - Interrupt controller descriptor.
+ * @return	SUCCESS in case of success, FAILURE otherwise.
+ */
+int32_t irq_ctrl_remove(struct irq_ctrl_desc *desc)
+{
+	if (!desc) {
+		return FAILURE;
+	}
+
+	if (((mbed_irq_desc *)desc->extra)->int_obj) {
+		free(((mbed_irq_desc *)desc->extra)->int_obj);
+	}
+
+	if ((irq_ctrl_desc *)desc->extra) {
+		free((irq_ctrl_desc *)desc->extra);
+	}
+
+	free(desc);
+
+	return SUCCESS;
+}
+
+
+/**
+ * @brief	Registers a IRQ callback function to irq controller.
+ * @param	desc[in] - The IRQ controller descriptor.
+ * @param	irq_id[in] - Interrupt identifier.
+ * @param	callback_desc - Descriptor of the callback. If it is NULL, the
+ *			callback will be unregistered
+ * @return	SUCCESS in case of success, FAILURE otherwise.
+ */
+int32_t irq_register_callback(struct irq_ctrl_desc *desc,
+			      uint32_t irq_id,
+			      struct callback_desc *callback_desc)
+{
+	InterruptIn *ext_interrupt;
+	mbed::UnbufferedSerial *uart_rx_port;
+	PinName *ext_int_pin;
+
+	if (!desc || !callback_desc) {
+		return FAILURE;
+	}
+
+	switch (irq_id) {
+	case EXTERNAL_INT_ID:
+		/* Attach external interrupt to input pin */
+		ext_int_pin = (PinName *)((mbed_irq_desc *)(desc->extra))->int_obj_type;
+		if (!ext_int_pin) {
+			return FAILURE;
+		}
+
+		ext_interrupt = new InterruptIn(*ext_int_pin);
+		if (!ext_interrupt) {
+			return FAILURE;
+		}
+
+		/* Register a callback function to get external interrupt input */
+		if (((mbed_irq_desc *)(desc->extra))->int_mode == EXT_IRQ_FALL) {
+			ext_interrupt->fall(callback_desc->callback);
+		} else if (((mbed_irq_desc *)(desc->extra))->int_mode == EXT_IRQ_RISE) {
+			ext_interrupt->rise(callback_desc->callback);
+		} else {
+			return FAILURE;
+		}
+
+		/* Store the external interrupt object to be freed from irq_ctrl_remove() */
+		((mbed_irq_desc *)(desc->extra))->int_obj = ext_interrupt;
+
+		ext_interrupt->enable_irq();
+
+		break;
+
+	case UART_RX_INT_ID:
+		uart_rx_port = (mbed::UnbufferedSerial *)(((mbed_irq_desc *)(
+					desc->extra))->int_obj_type);
+		if (!uart_rx_port) {
+			return FAILURE;
+		}
+
+		/* Register a callback function to receive UnbufferedSerial port event */
+		uart_rx_port->attach(callback_desc->callback, UnbufferedSerial::RxIrq);
+
+		break;
+
+	default:
+		return FAILURE;
+	}
+
+	return SUCCESS;
+}