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Paul Sokolovsky authoredThis implements the orginal idea is that Signal is a subclass of Pin, and thus can accept all the same argument as Pin, and additionally, "inverted" param. On the practical side, it allows to avoid many enclosed parenses for a typical declararion, e.g. for Zephyr: Signal(Pin(("GPIO_0", 1))). Of course, passing a Pin to Signal constructor is still supported and is the most generic form (e.g. Unix port will only support such form, as it doesn't have "builtin" Pins), what's introduces here is just practical readability optimization. "value" kwarg is treated as applying to a Signal (i.e. accounts for possible inversion).Paul Sokolovsky authoredThis implements the orginal idea is that Signal is a subclass of Pin, and thus can accept all the same argument as Pin, and additionally, "inverted" param. On the practical side, it allows to avoid many enclosed parenses for a typical declararion, e.g. for Zephyr: Signal(Pin(("GPIO_0", 1))). Of course, passing a Pin to Signal constructor is still supported and is the most generic form (e.g. Unix port will only support such form, as it doesn't have "builtin" Pins), what's introduces here is just practical readability optimization. "value" kwarg is treated as applying to a Signal (i.e. accounts for possible inversion).
cdcacm.c 10.04 KiB
/*******************************************************************************
* Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
*
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*
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* $Id: main.c 32120 2017-11-28 23:51:11Z lorne.smith $
*
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*/
/**
* @file main.c
* @brief USB CDC-ACM example
* @details This project creates a virtual COM port, which loops back data sent to it.
* Load the project, connect a cable from the PC to the USB connector
* on the Evaluation Kit, and observe that the PC now recognizes a new COM port.
* A driver for the COM port, if needed, is located in the Driver/ subdirectory.
*
*/
#include <stdio.h>
#include <stddef.h>
#include "mxc_config.h"
#include "mxc_sys.h"
#include "mxc_delay.h"
#include "board.h"
#include "led.h"
#include "usb.h"
#include "usb_event.h"
#include "enumerate.h"
#include "cdc_acm.h"
#include "descriptors.h"
/***** Definitions *****/
#define EVENT_ENUM_COMP MAXUSB_NUM_EVENTS
#define BUFFER_SIZE 64
#define STRINGIFY(x) #x
#define TOSTRING(x) STRINGIFY(x)
/***** Global Data *****/
volatile int configured;