添加一些关于midi播放的项目

2025-03-24 14:30:56 +08:00
parent e31eb22077
commit 498b4ef13b
699 changed files with 186162 additions and 1 deletions
@@ -0,0 +1,137 @@
+/****************************************************************************//*
+**
+** Lemcusb - Firmware USB driver for EFM32 Microcontroller
+** Copyright (C) 2014 http://lemcu.org
+**
+** This library is free software: you can redistribute it and/or modify
+** it under the terms of the GNU General Public License version 3.0 as
+** published by the Free Software Foundation and appearing in the file
+** LICENSE.txt included in the packaging of this file.
+** 
+** In addition, as a special exception, http://lemcu.org gives you certain
+** additional rights. These rights are described in the lemcu.org GPL 
+** Exception version 1.0, included in the file GPL_EXCEPTION.txt in this
+** package.
+**
+** This library is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+**
+****************************************************************************/
+
+#ifndef __USB_H__
+#define __USB_H__
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "usb_config.h"
+
+/* public interface to virtual USB peripheral & Stack */
+
+/* some definitions for USB descriptors */
+#define DESCRIPTOR_DEVICE		(0x01)	/* Get device descriptor: Device */
+#define DESCRIPTOR_CONFIGURATION	(0x02)	/* Get device descriptor: Configuration */
+#define DESCRIPTOR_STRING		(0x03)	/* Get device descriptor: String */
+#define DESCRIPTOR_INTERFACE            (0x04)
+#define DESCRIPTOR_ENDPOINT             (0x05)
+
+#ifdef  USB_ENABLE_HID
+#define DESCRIPTOR_HID	                (0x21)	/* Get descriptor: HID */
+#define DESCRIPTOR_REPORT	        (0x22)	/* Get descriptor: Report */
+#endif
+
+#define EPTYPE_CONTROL                  (0x00)
+#define EPTYPE_INTERRUPT                (0x03)
+
+
+/* Some defines for endpoint function parameters => TODO, will be used in a later stage */
+#define USB_EPSETUP     (0)
+#define USB_EP0OUT      (16)
+#define USB_EP0IN       (32)
+#if USB_ENABLE_EP1OUT_EP1IN == 1
+  #define USB_EP1OUT      (48)
+  #define USB_EP1IN       (64)
+#endif
+
+
+/* struct, which is used for control transfers */
+typedef struct  
+{
+  uint8_t  bmRequestType;
+  uint8_t  bRequest;
+  uint16_t wLength;
+  uint16_t wValue;
+  uint16_t wIndex;
+} setupData_t;
+
+
+
+/* Initialize USB and all used peripherals
+   It startes with the USB peripheral disconnected from PC.
+   Call usb_connect after initialization.
+*/
+void usb_init(void);
+
+void usb_connect(void);
+
+void usb_disconnect(void);
+
+bool usb_check_resetcondition(void);
+
+void usb_reset_received(void);
+
+
+
+/* check, if a setup packet was received */
+bool usb_setup_available(void);
+
+/* read setup data. Setup data does have a fixed length of 8 Bytes */
+void usb_setup_get_data(setupData_t *psetupdata);
+
+
+
+/* check, if data can be written to ep0in buffer (== buffer is empty) */
+bool usb_ep_in_buf_empty(uint32_t epnum);
+
+
+/* write data to ep0in buffer */
+void usb_ep_in_commit_pkt(uint32_t epnum, bool firstpkt, const uint8_t *pbuf, uint32_t len);
+
+
+
+/* check, if received data is in OUT endpoint */
+bool usb_ep_out_data_available(uint32_t epnum);
+
+/* get data from EPxOUT. Length [bytes] is returned. */
+uint32_t usb_ep_out_get_data(uint32_t epnum, uint8_t *pbuf);
+
+/* stall endpoint */
+void usb_ep_stall(uint32_t epnum);
+
+/* remove stall condition from endpoint */
+void usb_ep_unstall(uint32_t epnum);
+
+/* returns true if endpoint is stalled */
+bool usb_ep_is_stalled(uint32_t epnum);
+
+/* receive a package via EP0OUT. It is allowed to be longer than 8 bytes */
+/* important: ensure, that pbuf has a buffer size with a multiple of 8 Bytes */
+/* returns received length */
+uint8_t usb_ep_out_get_data_long(uint8_t *pbuf, uint8_t maxlen);
+
+/* send a package via EP0IN which is longer as 7 bytes */
+//void usb_ep_in_commit_pkt_long(uint32_t epnum, const uint8_t *pbuf, uint8_t len);
+void usb_ep_in_commit_pkt_long(uint32_t epnum, const uint8_t *pbuf, uint8_t len, bool sendshortpkt);
+
+
+
+/* Handle a Control transfer without data stage => transmits a ACK in status stage */
+void usb_control_acknowledge(void);
+
+/* Handle a Control IN transfer */
+bool usb_control_dataIn(const uint8_t *pbuf, uint8_t len);
+
+/* Handle a Control OUT transfer */
+uint8_t usb_control_dataOut(uint8_t *pbuf, uint8_t maxlen);
+
+#endif