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rt-thread/components/drivers/usb/usbdevice/class/cdc_vcom.c

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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2012-10-02 Yi Qiu first version
* 2012-12-12 heyuanjie87 change endpoints and function handler
* 2013-06-25 heyuanjie87 remove SOF mechinism
* 2013-07-20 Yi Qiu do more test
* 2016-02-01 Urey Fix some error
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtservice.h>
#include <rtdevice.h>
#include <drivers/serial.h>
#include "drivers/usb_device.h"
#include "cdc.h"
#ifdef RT_USB_DEVICE_CDC
#ifdef RT_VCOM_TX_TIMEOUT
#define VCOM_TX_TIMEOUT RT_VCOM_TX_TIMEOUT
#else /*!RT_VCOM_TX_TIMEOUT*/
#define VCOM_TX_TIMEOUT 1000
#endif /*RT_VCOM_TX_TIMEOUT*/
#define CDC_RX_BUFSIZE 128
#define CDC_MAX_PACKET_SIZE 64
#define VCOM_DEVICE "vcom"
#ifdef RT_VCOM_TASK_STK_SIZE
#define VCOM_TASK_STK_SIZE RT_VCOM_TASK_STK_SIZE
#else /*!RT_VCOM_TASK_STK_SIZE*/
#define VCOM_TASK_STK_SIZE 512
#endif /*RT_VCOM_TASK_STK_SIZE*/
#ifdef RT_VCOM_TX_USE_DMA
#define VCOM_TX_USE_DMA
#endif /*RT_VCOM_TX_USE_DMA*/
#ifdef RT_VCOM_SERNO
#define _SER_NO RT_VCOM_SERNO
#else /*!RT_VCOM_SERNO*/
#define _SER_NO "32021919830108"
#endif /*RT_VCOM_SERNO*/
#ifdef RT_VCOM_SER_LEN
#define _SER_NO_LEN RT_VCOM_SER_LEN
#else /*!RT_VCOM_SER_LEN*/
#define _SER_NO_LEN 14 /*rt_strlen("32021919830108")*/
#endif /*RT_VCOM_SER_LEN*/
ALIGN(RT_ALIGN_SIZE)
static rt_uint8_t vcom_thread_stack[VCOM_TASK_STK_SIZE];
static struct rt_thread vcom_thread;
static struct ucdc_line_coding line_coding;
#define CDC_TX_BUFSIZE 1024
#define CDC_BULKIN_MAXSIZE (CDC_TX_BUFSIZE / 8)
#define CDC_TX_HAS_DATE 0x01
struct vcom
{
struct rt_serial_device serial;
uep_t ep_out;
uep_t ep_in;
uep_t ep_cmd;
rt_bool_t connected;
rt_bool_t in_sending;
struct rt_completion wait;
rt_uint8_t rx_rbp[CDC_RX_BUFSIZE];
struct rt_ringbuffer rx_ringbuffer;
rt_uint8_t tx_rbp[CDC_TX_BUFSIZE];
struct rt_ringbuffer tx_ringbuffer;
struct rt_event tx_event;
};
struct vcom_tx_msg
{
struct rt_serial_device * serial;
const char *buf;
rt_size_t size;
};
ALIGN(4)
static struct udevice_descriptor dev_desc =
{
USB_DESC_LENGTH_DEVICE, //bLength;
USB_DESC_TYPE_DEVICE, //type;
USB_BCD_VERSION, //bcdUSB;
USB_CLASS_CDC, //bDeviceClass;
0x00, //bDeviceSubClass;
0x00, //bDeviceProtocol;
CDC_MAX_PACKET_SIZE, //bMaxPacketSize0;
_VENDOR_ID, //idVendor;
_PRODUCT_ID, //idProduct;
USB_BCD_DEVICE, //bcdDevice;
USB_STRING_MANU_INDEX, //iManufacturer;
USB_STRING_PRODUCT_INDEX, //iProduct;
USB_STRING_SERIAL_INDEX, //iSerialNumber;
USB_DYNAMIC, //bNumConfigurations;
};
//FS and HS needed
ALIGN(4)
static struct usb_qualifier_descriptor dev_qualifier =
{
sizeof(dev_qualifier), //bLength
USB_DESC_TYPE_DEVICEQUALIFIER, //bDescriptorType
0x0200, //bcdUSB
USB_CLASS_CDC, //bDeviceClass
0x00, //bDeviceSubClass
0x00, //bDeviceProtocol
64, //bMaxPacketSize0
0x01, //bNumConfigurations
0,
};
/* communcation interface descriptor */
ALIGN(4)
const static struct ucdc_comm_descriptor _comm_desc =
{
#ifdef RT_USB_DEVICE_COMPOSITE
/* Interface Association Descriptor */
{
USB_DESC_LENGTH_IAD,
USB_DESC_TYPE_IAD,
USB_DYNAMIC,
0x02,
USB_CDC_CLASS_COMM,
USB_CDC_SUBCLASS_ACM,
USB_CDC_PROTOCOL_V25TER,
0x00,
},
#endif
/* Interface Descriptor */
{
USB_DESC_LENGTH_INTERFACE,
USB_DESC_TYPE_INTERFACE,
USB_DYNAMIC,
0x00,
0x01,
USB_CDC_CLASS_COMM,
USB_CDC_SUBCLASS_ACM,
USB_CDC_PROTOCOL_V25TER,
0x00,
},
/* Header Functional Descriptor */
{
0x05,
USB_CDC_CS_INTERFACE,
USB_CDC_SCS_HEADER,
0x0110,
},
/* Call Management Functional Descriptor */
{
0x05,
USB_CDC_CS_INTERFACE,
USB_CDC_SCS_CALL_MGMT,
0x00,
USB_DYNAMIC,
},
/* Abstract Control Management Functional Descriptor */
{
0x04,
USB_CDC_CS_INTERFACE,
USB_CDC_SCS_ACM,
0x02,
},
/* Union Functional Descriptor */
{
0x05,
USB_CDC_CS_INTERFACE,
USB_CDC_SCS_UNION,
USB_DYNAMIC,
USB_DYNAMIC,
},
/* Endpoint Descriptor */
{
USB_DESC_LENGTH_ENDPOINT,
USB_DESC_TYPE_ENDPOINT,
USB_DYNAMIC | USB_DIR_IN,
USB_EP_ATTR_INT,
0x08,
0xFF,
},
};
/* data interface descriptor */
ALIGN(4)
const static struct ucdc_data_descriptor _data_desc =
{
/* interface descriptor */
{
USB_DESC_LENGTH_INTERFACE,
USB_DESC_TYPE_INTERFACE,
USB_DYNAMIC,
0x00,
0x02,
USB_CDC_CLASS_DATA,
0x00,
0x00,
0x00,
},
/* endpoint, bulk out */
{
USB_DESC_LENGTH_ENDPOINT,
USB_DESC_TYPE_ENDPOINT,
USB_DYNAMIC | USB_DIR_OUT,
USB_EP_ATTR_BULK,
USB_CDC_BUFSIZE,
0x00,
},
/* endpoint, bulk in */
{
USB_DESC_LENGTH_ENDPOINT,
USB_DESC_TYPE_ENDPOINT,
USB_DYNAMIC | USB_DIR_IN,
USB_EP_ATTR_BULK,
USB_CDC_BUFSIZE,
0x00,
},
};
ALIGN(4)
static char serno[_SER_NO_LEN + 1] = {'\0'};
RT_WEAK rt_err_t vcom_get_stored_serno(char *serno, int size);
rt_err_t vcom_get_stored_serno(char *serno, int size)
{
return RT_ERROR;
}
ALIGN(4)
const static char* _ustring[] =
{
"Language",
"RT-Thread Team.",
"RTT Virtual Serial",
serno,
"Configuration",
"Interface",
};
static void rt_usb_vcom_init(struct ufunction *func);
static void _vcom_reset_state(ufunction_t func)
{
struct vcom* data;
int lvl;
RT_ASSERT(func != RT_NULL)
data = (struct vcom*)func->user_data;
lvl = rt_hw_interrupt_disable();
data->connected = RT_FALSE;
data->in_sending = RT_FALSE;
/*rt_kprintf("reset USB serial\n", cnt);*/
rt_hw_interrupt_enable(lvl);
}
/**
* This function will handle cdc bulk in endpoint request.
*
* @param func the usb function object.
* @param size request size.
*
* @return RT_EOK.
*/
static rt_err_t _ep_in_handler(ufunction_t func, rt_size_t size)
{
struct vcom *data;
rt_size_t request_size;
RT_ASSERT(func != RT_NULL);
data = (struct vcom*)func->user_data;
request_size = data->ep_in->request.size;
RT_DEBUG_LOG(RT_DEBUG_USB, ("_ep_in_handler %d\n", request_size));
if ((request_size != 0) && ((request_size % EP_MAXPACKET(data->ep_in)) == 0))
{
/* don't have data right now. Send a zero-length-packet to
* terminate the transaction.
*
* FIXME: actually, this might not be the right place to send zlp.
* Only the rt_device_write could know how much data is sending. */
data->in_sending = RT_TRUE;
data->ep_in->request.buffer = RT_NULL;
data->ep_in->request.size = 0;
data->ep_in->request.req_type = UIO_REQUEST_WRITE;
rt_usbd_io_request(func->device, data->ep_in, &data->ep_in->request);
return RT_EOK;
}
rt_completion_done(&data->wait);
return RT_EOK;
}
/**
* This function will handle cdc bulk out endpoint request.
*
* @param func the usb function object.
* @param size request size.
*
* @return RT_EOK.
*/
static rt_err_t _ep_out_handler(ufunction_t func, rt_size_t size)
{
rt_uint32_t level;
struct vcom *data;
RT_ASSERT(func != RT_NULL);
RT_DEBUG_LOG(RT_DEBUG_USB, ("_ep_out_handler %d\n", size));
data = (struct vcom*)func->user_data;
/* ensure serial is active */
if((data->serial.parent.flag & RT_DEVICE_FLAG_ACTIVATED)
&& (data->serial.parent.open_flag & RT_DEVICE_OFLAG_OPEN))
{
/* receive data from USB VCOM */
level = rt_hw_interrupt_disable();
rt_ringbuffer_put(&data->rx_ringbuffer, data->ep_out->buffer, size);
rt_hw_interrupt_enable(level);
/* notify receive data */
rt_hw_serial_isr(&data->serial,RT_SERIAL_EVENT_RX_IND);
}
data->ep_out->request.buffer = data->ep_out->buffer;
data->ep_out->request.size = EP_MAXPACKET(data->ep_out);
data->ep_out->request.req_type = UIO_REQUEST_READ_BEST;
rt_usbd_io_request(func->device, data->ep_out, &data->ep_out->request);
return RT_EOK;
}
/**
* This function will handle cdc interrupt in endpoint request.
*
* @param device the usb device object.
* @param size request size.
*
* @return RT_EOK.
*/
static rt_err_t _ep_cmd_handler(ufunction_t func, rt_size_t size)
{
RT_ASSERT(func != RT_NULL);
RT_DEBUG_LOG(RT_DEBUG_USB, ("_ep_cmd_handler\n"));
return RT_EOK;
}
/**
* This function will handle cdc_get_line_coding request.
*
* @param device the usb device object.
* @param setup the setup request.
*
* @return RT_EOK on successful.
*/
static rt_err_t _cdc_get_line_coding(udevice_t device, ureq_t setup)
{
struct ucdc_line_coding data;
rt_uint16_t size;
RT_ASSERT(device != RT_NULL);
RT_ASSERT(setup != RT_NULL);
RT_DEBUG_LOG(RT_DEBUG_USB, ("_cdc_get_line_coding\n"));
data.dwDTERate = 115200;
data.bCharFormat = 0;
data.bDataBits = 8;
data.bParityType = 0;
size = setup->wLength > 7 ? 7 : setup->wLength;
rt_usbd_ep0_write(device, (void*)&data, size);
return RT_EOK;
}
static rt_err_t _cdc_set_line_coding_callback(udevice_t device, rt_size_t size)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("_cdc_set_line_coding_callback\n"));
dcd_ep0_send_status(device->dcd);
return RT_EOK;
}
/**
* This function will handle cdc_set_line_coding request.
*
* @param device the usb device object.
* @param setup the setup request.
*
* @return RT_EOK on successful.
*/
static rt_err_t _cdc_set_line_coding(udevice_t device, ureq_t setup)
{
RT_ASSERT(device != RT_NULL);
RT_ASSERT(setup != RT_NULL);
RT_DEBUG_LOG(RT_DEBUG_USB, ("_cdc_set_line_coding\n"));
rt_usbd_ep0_read(device, (void*)&line_coding, sizeof(struct ucdc_line_coding),
_cdc_set_line_coding_callback);
return RT_EOK;
}
/**
* This function will handle cdc interface request.
*
* @param device the usb device object.
* @param setup the setup request.
*
* @return RT_EOK on successful.
*/
static rt_err_t _interface_handler(ufunction_t func, ureq_t setup)
{
struct vcom *data;
RT_ASSERT(func != RT_NULL);
RT_ASSERT(func->device != RT_NULL);
RT_ASSERT(setup != RT_NULL);
data = (struct vcom*)func->user_data;
switch(setup->bRequest)
{
case CDC_SEND_ENCAPSULATED_COMMAND:
break;
case CDC_GET_ENCAPSULATED_RESPONSE:
break;
case CDC_SET_COMM_FEATURE:
break;
case CDC_GET_COMM_FEATURE:
break;
case CDC_CLEAR_COMM_FEATURE:
break;
case CDC_SET_LINE_CODING:
_cdc_set_line_coding(func->device, setup);
break;
case CDC_GET_LINE_CODING:
_cdc_get_line_coding(func->device, setup);
break;
case CDC_SET_CONTROL_LINE_STATE:
data->connected = (setup->wValue & 0x01) > 0?RT_TRUE:RT_FALSE;
RT_DEBUG_LOG(RT_DEBUG_USB, ("vcom state:%d \n", data->connected));
dcd_ep0_send_status(func->device->dcd);
break;
case CDC_SEND_BREAK:
break;
default:
rt_kprintf("unknown cdc request\n",setup->request_type);
return -RT_ERROR;
}
return RT_EOK;
}
/**
* This function will run cdc function, it will be called on handle set configuration request.
*
* @param func the usb function object.
*
* @return RT_EOK on successful.
*/
static rt_err_t _function_enable(ufunction_t func)
{
struct vcom *data;
RT_ASSERT(func != RT_NULL);
RT_DEBUG_LOG(RT_DEBUG_USB, ("cdc function enable\n"));
_vcom_reset_state(func);
data = (struct vcom*)func->user_data;
data->ep_out->buffer = rt_malloc(CDC_RX_BUFSIZE);
data->ep_out->request.buffer = data->ep_out->buffer;
data->ep_out->request.size = EP_MAXPACKET(data->ep_out);
data->ep_out->request.req_type = UIO_REQUEST_READ_BEST;
rt_usbd_io_request(func->device, data->ep_out, &data->ep_out->request);
return RT_EOK;
}
/**
* This function will stop cdc function, it will be called on handle set configuration request.
*
* @param func the usb function object.
*
* @return RT_EOK on successful.
*/
static rt_err_t _function_disable(ufunction_t func)
{
struct vcom *data;
RT_ASSERT(func != RT_NULL);
RT_DEBUG_LOG(RT_DEBUG_USB, ("cdc function disable\n"));
_vcom_reset_state(func);
data = (struct vcom*)func->user_data;
if(data->ep_out->buffer != RT_NULL)
{
rt_free(data->ep_out->buffer);
data->ep_out->buffer = RT_NULL;
}
return RT_EOK;
}
static struct ufunction_ops ops =
{
_function_enable,
_function_disable,
RT_NULL,
};
/**
* This function will configure cdc descriptor.
*
* @param comm the communication interface number.
* @param data the data interface number.
*
* @return RT_EOK on successful.
*/
static rt_err_t _cdc_descriptor_config(ucdc_comm_desc_t comm,
rt_uint8_t cintf_nr, ucdc_data_desc_t data, rt_uint8_t dintf_nr)
{
comm->call_mgmt_desc.data_interface = dintf_nr;
comm->union_desc.master_interface = cintf_nr;
comm->union_desc.slave_interface0 = dintf_nr;
#ifdef RT_USB_DEVICE_COMPOSITE
comm->iad_desc.bFirstInterface = cintf_nr;
#endif
return RT_EOK;
}
/**
* This function will create a cdc function instance.
*
* @param device the usb device object.
*
* @return RT_EOK on successful.
*/
ufunction_t rt_usbd_function_cdc_create(udevice_t device)
{
ufunction_t func;
struct vcom* data;
uintf_t intf_comm, intf_data;
ualtsetting_t comm_setting, data_setting;
ucdc_data_desc_t data_desc;
ucdc_comm_desc_t comm_desc;
/* parameter check */
RT_ASSERT(device != RT_NULL);
rt_memset(serno, 0, _SER_NO_LEN + 1);
if(vcom_get_stored_serno(serno, _SER_NO_LEN) != RT_EOK)
{
rt_memset(serno, 0, _SER_NO_LEN + 1);
rt_memcpy(serno, _SER_NO, rt_strlen(_SER_NO));
}
/* set usb device string description */
rt_usbd_device_set_string(device, _ustring);
/* create a cdc function */
func = rt_usbd_function_new(device, &dev_desc, &ops);
//not support HS
//rt_usbd_device_set_qualifier(device, &dev_qualifier);
/* allocate memory for cdc vcom data */
data = (struct vcom*)rt_malloc(sizeof(struct vcom));
rt_memset(data, 0, sizeof(struct vcom));
func->user_data = (void*)data;
/* initilize vcom */
rt_usb_vcom_init(func);
/* create a cdc communication interface and a cdc data interface */
intf_comm = rt_usbd_interface_new(device, _interface_handler);
intf_data = rt_usbd_interface_new(device, _interface_handler);
/* create a communication alternate setting and a data alternate setting */
comm_setting = rt_usbd_altsetting_new(sizeof(struct ucdc_comm_descriptor));
data_setting = rt_usbd_altsetting_new(sizeof(struct ucdc_data_descriptor));
/* config desc in alternate setting */
rt_usbd_altsetting_config_descriptor(comm_setting, &_comm_desc,
(rt_off_t)&((ucdc_comm_desc_t)0)->intf_desc);
rt_usbd_altsetting_config_descriptor(data_setting, &_data_desc, 0);
/* configure the cdc interface descriptor */
_cdc_descriptor_config(comm_setting->desc, intf_comm->intf_num, data_setting->desc, intf_data->intf_num);
/* create a command endpoint */
comm_desc = (ucdc_comm_desc_t)comm_setting->desc;
data->ep_cmd = rt_usbd_endpoint_new(&comm_desc->ep_desc, _ep_cmd_handler);
/* add the command endpoint to the cdc communication interface */
rt_usbd_altsetting_add_endpoint(comm_setting, data->ep_cmd);
/* add the communication alternate setting to the communication interface,
then set default setting of the interface */
rt_usbd_interface_add_altsetting(intf_comm, comm_setting);
rt_usbd_set_altsetting(intf_comm, 0);
/* add the communication interface to the cdc function */
rt_usbd_function_add_interface(func, intf_comm);
/* create a bulk in and a bulk endpoint */
data_desc = (ucdc_data_desc_t)data_setting->desc;
data->ep_out = rt_usbd_endpoint_new(&data_desc->ep_out_desc, _ep_out_handler);
data->ep_in = rt_usbd_endpoint_new(&data_desc->ep_in_desc, _ep_in_handler);
/* add the bulk out and bulk in endpoints to the data alternate setting */
rt_usbd_altsetting_add_endpoint(data_setting, data->ep_in);
rt_usbd_altsetting_add_endpoint(data_setting, data->ep_out);
/* add the data alternate setting to the data interface
then set default setting of the interface */
rt_usbd_interface_add_altsetting(intf_data, data_setting);
rt_usbd_set_altsetting(intf_data, 0);
/* add the cdc data interface to cdc function */
rt_usbd_function_add_interface(func, intf_data);
return func;
}
/**
* UART device in RT-Thread
*/
static rt_err_t _vcom_configure(struct rt_serial_device *serial,
struct serial_configure *cfg)
{
return RT_EOK;
}
static rt_err_t _vcom_control(struct rt_serial_device *serial,
int cmd, void *arg)
{
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */
break;
case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */
break;
}
return RT_EOK;
}
static int _vcom_getc(struct rt_serial_device *serial)
{
int result;
rt_uint8_t ch;
rt_uint32_t level;
struct ufunction *func;
struct vcom *data;
func = (struct ufunction*)serial->parent.user_data;
data = (struct vcom*)func->user_data;
result = -1;
level = rt_hw_interrupt_disable();
if(rt_ringbuffer_getchar(&data->rx_ringbuffer, &ch) != 0)
{
result = ch;
}
rt_hw_interrupt_enable(level);
return result;
}
static rt_size_t _vcom_tx(struct rt_serial_device *serial, rt_uint8_t *buf, rt_size_t size,int direction)
{
rt_uint32_t level;
struct ufunction *func;
struct vcom *data;
rt_uint32_t baksize;
rt_size_t ptr = 0;
int empty = 0;
rt_uint8_t crlf[2] = {'\r', '\n',};
func = (struct ufunction*)serial->parent.user_data;
data = (struct vcom*)func->user_data;
size = (size >= CDC_BULKIN_MAXSIZE) ? CDC_BULKIN_MAXSIZE : size;
baksize = size;
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(buf != RT_NULL);
RT_DEBUG_LOG(RT_DEBUG_USB, ("%s\n",__func__));
if (data->connected)
{
size = 0;
if((serial->parent.open_flag & RT_DEVICE_FLAG_STREAM))
{
empty = 0;
while(ptr < baksize)
{
while(ptr < baksize && buf[ptr] != '\n')
{
ptr++;
}
if(ptr < baksize)
{
level = rt_hw_interrupt_disable();
size += rt_ringbuffer_put_force(&data->tx_ringbuffer, (const rt_uint8_t *)&buf[size], ptr - size);
rt_hw_interrupt_enable(level);
/* no data was be ignored */
if(size == ptr)
{
level = rt_hw_interrupt_disable();
if(rt_ringbuffer_space_len(&data->tx_ringbuffer) >= 2)
{
rt_ringbuffer_put_force(&data->tx_ringbuffer, crlf, 2);
size++;
}
rt_hw_interrupt_enable(level);
}
else
{
empty = 1;
break;
}
/* ring buffer is full */
if(size == ptr)
{
empty = 1;
break;
}
ptr++;
}
else
{
break;
}
}
}
if(size < baksize && !empty)
{
level = rt_hw_interrupt_disable();
size += rt_ringbuffer_put_force(&data->tx_ringbuffer, (rt_uint8_t *)&buf[size], baksize - size);
rt_hw_interrupt_enable(level);
}
if(size)
{
rt_event_send(&data->tx_event, CDC_TX_HAS_DATE);
}
}
else
{
/* recover dataqueue resources */
rt_hw_serial_isr(&data->serial,RT_SERIAL_EVENT_TX_DMADONE);
}
return size;
}
static int _vcom_putc(struct rt_serial_device *serial, char c)
{
rt_uint32_t level;
struct ufunction *func;
struct vcom *data;
func = (struct ufunction*)serial->parent.user_data;
data = (struct vcom*)func->user_data;
RT_ASSERT(serial != RT_NULL);
if (data->connected)
{
if(c == '\n' && (serial->parent.open_flag & RT_DEVICE_FLAG_STREAM))
{
level = rt_hw_interrupt_disable();
rt_ringbuffer_putchar_force(&data->tx_ringbuffer, '\r');
rt_hw_interrupt_enable(level);
rt_event_send(&data->tx_event, CDC_TX_HAS_DATE);
}
level = rt_hw_interrupt_disable();
rt_ringbuffer_putchar_force(&data->tx_ringbuffer, c);
rt_hw_interrupt_enable(level);
rt_event_send(&data->tx_event, CDC_TX_HAS_DATE);
}
return 1;
}
static const struct rt_uart_ops usb_vcom_ops =
{
_vcom_configure,
_vcom_control,
_vcom_putc,
_vcom_getc,
_vcom_tx
};
/* Vcom Tx Thread */
static void vcom_tx_thread_entry(void* parameter)
{
rt_uint32_t level;
rt_uint32_t res;
struct ufunction *func = (struct ufunction *)parameter;
struct vcom *data = (struct vcom*)func->user_data;
rt_uint8_t ch[CDC_BULKIN_MAXSIZE];
while (1)
{
if
(
(rt_event_recv(&data->tx_event, CDC_TX_HAS_DATE,
RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
RT_WAITING_FOREVER, &res) != RT_EOK) ||
(!(res & CDC_TX_HAS_DATE))
)
{
continue;
}
if(!(res & CDC_TX_HAS_DATE))
{
continue;
}
while(rt_ringbuffer_data_len(&data->tx_ringbuffer))
{
level = rt_hw_interrupt_disable();
res = rt_ringbuffer_get(&data->tx_ringbuffer, ch, CDC_BULKIN_MAXSIZE);
rt_hw_interrupt_enable(level);
if(!res)
{
continue;
}
if (!data->connected)
{
if(data->serial.parent.open_flag &
#ifndef VCOM_TX_USE_DMA
RT_DEVICE_FLAG_INT_TX
#else
RT_DEVICE_FLAG_DMA_TX
#endif
)
{
/* drop msg */
#ifndef VCOM_TX_USE_DMA
rt_hw_serial_isr(&data->serial,RT_SERIAL_EVENT_TX_DONE);
#else
rt_hw_serial_isr(&data->serial,RT_SERIAL_EVENT_TX_DMADONE);
#endif
}
continue;
}
rt_completion_init(&data->wait);
data->ep_in->request.buffer = ch;
data->ep_in->request.size = res;
data->ep_in->request.req_type = UIO_REQUEST_WRITE;
rt_usbd_io_request(func->device, data->ep_in, &data->ep_in->request);
if (rt_completion_wait(&data->wait, VCOM_TX_TIMEOUT) != RT_EOK)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("vcom tx timeout\n"));
}
if(data->serial.parent.open_flag &
#ifndef VCOM_TX_USE_DMA
RT_DEVICE_FLAG_INT_TX
#else
RT_DEVICE_FLAG_DMA_TX
#endif
)
{
#ifndef VCOM_TX_USE_DMA
rt_hw_serial_isr(&data->serial,RT_SERIAL_EVENT_TX_DONE);
#else
rt_hw_serial_isr(&data->serial,RT_SERIAL_EVENT_TX_DMADONE);
#endif
}
}
}
}
static void rt_usb_vcom_init(struct ufunction *func)
{
rt_err_t result = RT_EOK;
struct serial_configure config;
struct vcom *data = (struct vcom*)func->user_data;
/* initialize ring buffer */
rt_ringbuffer_init(&data->rx_ringbuffer, data->rx_rbp, CDC_RX_BUFSIZE);
rt_ringbuffer_init(&data->tx_ringbuffer, data->tx_rbp, CDC_TX_BUFSIZE);
rt_event_init(&data->tx_event, "vcom", RT_IPC_FLAG_FIFO);
config.baud_rate = BAUD_RATE_115200;
config.data_bits = DATA_BITS_8;
config.stop_bits = STOP_BITS_1;
config.parity = PARITY_NONE;
config.bit_order = BIT_ORDER_LSB;
config.invert = NRZ_NORMAL;
config.bufsz = CDC_RX_BUFSIZE;
data->serial.ops = &usb_vcom_ops;
data->serial.serial_rx = RT_NULL;
data->serial.config = config;
/* register vcom device */
rt_hw_serial_register(&data->serial, VCOM_DEVICE,
#ifndef VCOM_TX_USE_DMA
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_INT_TX,
#else
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_DMA_TX,
#endif
func);
/* init usb device thread */
rt_thread_init(&vcom_thread, "vcom",
vcom_tx_thread_entry, func,
vcom_thread_stack, VCOM_TASK_STK_SIZE,
16, 20);
result = rt_thread_startup(&vcom_thread);
RT_ASSERT(result == RT_EOK);
}
struct udclass vcom_class =
{
.rt_usbd_function_create = rt_usbd_function_cdc_create
};
int rt_usbd_vcom_class_register(void)
{
rt_usbd_class_register(&vcom_class);
return 0;
}
INIT_PREV_EXPORT(rt_usbd_vcom_class_register);
#endif
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