diff options
| author | [email protected] <[email protected]> | 2012-10-11 17:06:30 +0000 |
|---|---|---|
| committer | [email protected] <[email protected]> | 2012-10-11 17:06:30 +0000 |
| commit | c752d9b09510b62e4ecc76f4fd0343eeba5c1358 (patch) | |
| tree | a2dc012f19925f765441dec1442f0a1745100f90 /components/drivers/usb/usbdevice/class | |
| parent | 051fd8eca9fb3714cafe927d093d9348b31c39a1 (diff) | |
submit the first version usb device stack.
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2344 bbd45198-f89e-11dd-88c7-29a3b14d5316
Diffstat (limited to 'components/drivers/usb/usbdevice/class')
| -rw-r--r-- | components/drivers/usb/usbdevice/class/cdc.h | 157 | ||||
| -rw-r--r-- | components/drivers/usb/usbdevice/class/cdc_vcom.c | 548 |
2 files changed, 705 insertions, 0 deletions
diff --git a/components/drivers/usb/usbdevice/class/cdc.h b/components/drivers/usb/usbdevice/class/cdc.h new file mode 100644 index 0000000000..fa56e39659 --- /dev/null +++ b/components/drivers/usb/usbdevice/class/cdc.h @@ -0,0 +1,157 @@ +/*
+ * File : cdc.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2012, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date Author Notes
+ * 2012-10-03 Yi Qiu first version
+ */
+
+#define USB_CDC_PRODUCT_ID 0x5740 /* Product ID */
+#define USB_CDC_BUFSIZE 0x40
+
+#define USB_CDC_CLASS_COMM 0x02
+#define USB_CDC_CLASS_DATA 0x0A
+
+#define USB_CDC_SUBCLASS_DLCM 0x01
+#define USB_CDC_SUBCLASS_ACM 0x02
+#define USB_CDC_SUBCLASS_TCM 0x03
+#define USB_CDC_SUBCLASS_MCCM 0x04
+#define USB_CDC_SUBCLASS_CCM 0x05
+#define USB_CDC_SUBCLASS_ETH 0x06
+#define USB_CDC_SUBCLASS_ATM 0x07
+
+#define USB_CDC_PROTOCOL_V25TER 0x01
+
+#define USB_CDC_PROTOCOL_I430 0x30
+#define USB_CDC_PROTOCOL_HDLC 0x31
+#define USB_CDC_PROTOCOL_TRANS 0x32
+#define USB_CDC_PROTOCOL_Q921M 0x50
+#define USB_CDC_PROTOCOL_Q921 0x51
+#define USB_CDC_PROTOCOL_Q921TM 0x52
+#define USB_CDC_PROTOCOL_V42BIS 0x90
+#define USB_CDC_PROTOCOL_Q931 0x91
+#define USB_CDC_PROTOCOL_V120 0x92
+#define USB_CDC_PROTOCOL_CAPI20 0x93
+#define USB_CDC_PROTOCOL_HOST 0xFD
+#define USB_CDC_PROTOCOL_PUFD 0xFE
+
+#define USB_CDC_CS_INTERFACE 0x24
+#define USB_CDC_CS_ENDPOINT 0x25
+
+#define USB_CDC_SCS_HEADER 0x00
+#define USB_CDC_SCS_CALL_MGMT 0x01
+#define USB_CDC_SCS_ACM 0x02
+#define USB_CDC_SCS_UNION 0x06
+
+#define CDC_SEND_ENCAPSULATED_COMMAND 0x00
+#define CDC_GET_ENCAPSULATED_RESPONSE 0x01
+#define CDC_SET_COMM_FEATURE 0x02
+#define CDC_GET_COMM_FEATURE 0x03
+#define CDC_CLEAR_COMM_FEATURE 0x04
+#define CDC_SET_AUX_LINE_STATE 0x10
+#define CDC_SET_HOOK_STATE 0x11
+#define CDC_PULSE_SETUP 0x12
+#define CDC_SEND_PULSE 0x13
+#define CDC_SET_PULSE_TIME 0x14
+#define CDC_RING_AUX_JACK 0x15
+#define CDC_SET_LINE_CODING 0x20
+#define CDC_GET_LINE_CODING 0x21
+#define CDC_SET_CONTROL_LINE_STATE 0x22
+#define CDC_SEND_BREAK 0x23
+#define CDC_SET_RINGER_PARMS 0x30
+#define CDC_GET_RINGER_PARMS 0x31
+#define CDC_SET_OPERATION_PARMS 0x32
+#define CDC_GET_OPERATION_PARMS 0x33
+#define CDC_SET_LINE_PARMS 0x34
+#define CDC_GET_LINE_PARMS 0x35
+#define CDC_DIAL_DIGITS 0x36
+#define CDC_SET_UNIT_PARAMETER 0x37
+#define CDC_GET_UNIT_PARAMETER 0x38
+#define CDC_CLEAR_UNIT_PARAMETER 0x39
+#define CDC_GET_PROFILE 0x3A
+#define CDC_SET_ETH_MULTICAST_FILTERS 0x40
+#define CDC_SET_ETH_POWER_MGMT_FILT 0x41
+#define CDC_GET_ETH_POWER_MGMT_FILT 0x42
+#define CDC_SET_ETH_PACKET_FILTER 0x43
+#define CDC_GET_ETH_STATISTIC 0x44
+#define CDC_SET_ATM_DATA_FORMAT 0x50
+#define CDC_GET_ATM_DEVICE_STATISTICS 0x51
+#define CDC_SET_ATM_DEFAULT_VC 0x52
+#define CDC_GET_ATM_VC_STATISTICS 0x53
+
+#pragma pack(1)
+
+struct ucdc_header_descriptor
+{
+ rt_uint8_t length;
+ rt_uint8_t type;
+ rt_uint8_t subtype;
+ rt_uint16_t bcd;
+};
+typedef struct ucdc_header_descriptor* ucdc_hdr_desc_t;
+
+struct ucdc_acm_descriptor
+{
+ rt_uint8_t length;
+ rt_uint8_t type;
+ rt_uint8_t subtype;
+ rt_uint8_t capabilties;
+};
+typedef struct ucdc_acm_descriptor* ucdc_acm_desc_t;
+
+struct ucdc_call_mgmt_descriptor
+{
+ rt_uint8_t length;
+ rt_uint8_t type;
+ rt_uint8_t subtype;
+ rt_uint8_t capabilties;
+ rt_uint8_t data_interface;
+};
+typedef struct ucdc_call_mgmt_descriptor* ucdc_call_mgmt_desc_t;
+
+struct ucdc_union_descriptor
+{
+ rt_uint8_t length;
+ rt_uint8_t type;
+ rt_uint8_t subtype;
+ rt_uint8_t master_interface;
+ rt_uint8_t slave_interface0;
+};
+typedef struct ucdc_union_descriptor* ucdc_union_desc_t;
+
+struct ucdc_comm_descriptor
+{
+ struct uinterface_descriptor intf_desc;
+ struct ucdc_header_descriptor hdr_desc;
+ struct ucdc_call_mgmt_descriptor call_mgmt_desc;
+ struct ucdc_acm_descriptor acm_desc;
+ struct ucdc_union_descriptor union_desc;
+ struct uendpoint_descriptor ep_desc;
+};
+typedef struct ucdc_comm_descriptor* ucdc_comm_desc_t;
+
+struct ucdc_data_descriptor
+{
+ struct uinterface_descriptor intf_desc;
+ struct uendpoint_descriptor ep_out_desc;
+ struct uendpoint_descriptor ep_in_desc;
+};
+typedef struct ucdc_data_descriptor* ucdc_data_desc_t;
+
+struct ucdc_line_coding
+{
+ rt_uint32_t dwDTERate;
+ rt_uint8_t bCharFormat;
+ rt_uint8_t bParityType;
+ rt_uint8_t bDataBits;
+};
+typedef struct ucdc_line_coding* ucdc_line_coding_t;
+
+#pragma pack()
+
diff --git a/components/drivers/usb/usbdevice/class/cdc_vcom.c b/components/drivers/usb/usbdevice/class/cdc_vcom.c new file mode 100644 index 0000000000..c3f1d992cf --- /dev/null +++ b/components/drivers/usb/usbdevice/class/cdc_vcom.c @@ -0,0 +1,548 @@ +/*
+ * File : cdc_vcom.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2012, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date Author Notes
+ * 2012-10-02 Yi Qiu first version
+ */
+
+#include <rtthread.h>
+#include <rtdevice.h>
+#include "cdc.h"
+
+static uclass_t cdc;
+static uep_t ep_in, ep_out, ep_cmd;
+
+#define CDC_RX_BUFSIZE 64
+#define CDC_TX_BUFSIZE 2048
+static rt_uint8_t rx_pool[CDC_RX_BUFSIZE];
+static rt_uint8_t tx_pool[CDC_TX_BUFSIZE];
+static struct rt_ringbuffer rx_ringbuffer;
+static struct rt_ringbuffer tx_ringbuffer;
+static struct rt_serial_device vcom_serial;
+static struct serial_ringbuffer vcom_int_rx;
+static rt_bool_t vcom_connected = RT_FALSE;
+
+static struct udevice_descriptor dev_desc =
+{
+ USB_DESC_LENGTH_DEVICE, //bLength;
+ USB_DESC_TYPE_DEVICE, //type;
+ USB_BCD_VERSION, //bcdUSB;
+ 0x00, //bDeviceClass;
+ 0x00, //bDeviceSubClass;
+ 0x00, //bDeviceProtocol;
+ 0x40, //bMaxPacketSize0;
+ USB_VENDOR_ID, //idVendor;
+ USB_CDC_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;
+};
+
+/* communcation interface descriptor */
+static struct ucdc_comm_descriptor comm_desc =
+{
+ /* 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 */
+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,
+};
+
+/**
+ * This function will handle cdc bulk in endpoint request.
+ *
+ * @param device the usb device object.
+ * @param size request size.
+ *
+ * @return RT_EOK.
+ */
+static rt_err_t _ep_in_handler(udevice_t device, rt_size_t size)
+{
+ rt_uint32_t level;
+ rt_size_t length;
+
+ rt_size_t mps = ep_in->ep_desc->wMaxPacketSize;
+ size = RT_RINGBUFFER_SIZE(&tx_ringbuffer);
+ if(size == 0) return RT_EOK;
+
+ length = size > mps ? mps : size;
+
+ level = rt_hw_interrupt_disable();
+ rt_ringbuffer_get(&tx_ringbuffer, ep_in->buffer, length);
+ rt_hw_interrupt_enable(level);
+
+ /* send data to host */
+ dcd_ep_write(device->dcd, ep_in, ep_in->buffer, length);
+
+ return RT_EOK;
+}
+
+/**
+ * This function will handle cdc bulk out endpoint request.
+ *
+ * @param device the usb device object.
+ * @param size request size.
+ *
+ * @return RT_EOK.
+ */
+static rt_err_t _ep_out_handler(udevice_t device, rt_size_t size)
+{
+ rt_uint32_t level;
+
+ RT_ASSERT(device != RT_NULL);
+
+ /* receive data from USB VCOM */
+ level = rt_hw_interrupt_disable();
+ rt_ringbuffer_put(&rx_ringbuffer, ep_out->buffer, size);
+ rt_hw_interrupt_enable(level);
+
+ /* notify receive data */
+ rt_hw_serial_isr(&vcom_serial);
+
+ dcd_ep_read(device->dcd, ep_out, ep_out->buffer,
+ ep_out->ep_desc->wMaxPacketSize);
+
+ 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(udevice_t device, rt_size_t size)
+{
+ RT_ASSERT(device != 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);
+
+ data.dwDTERate = 115200;
+ data.bCharFormat = 0;
+ data.bDataBits = 8;
+ data.bParityType = 0;
+ size = setup->length > 7 ? 7 : setup->length;
+ dcd_ep_write(device->dcd, 0, (void*)&data, size);
+
+ 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)
+{
+ struct ucdc_line_coding data;
+ rt_err_t ret;
+
+ RT_ASSERT(device != RT_NULL);
+ RT_ASSERT(setup != RT_NULL);
+
+ rt_completion_init(&device->dcd->completion);
+
+ dcd_ep_read(device->dcd, 0, (void*)&data, setup->length);
+
+ ret = rt_completion_wait(&device->dcd->completion, 100);
+ if(ret != RT_EOK)
+ {
+ rt_kprintf("_cdc_set_line_coding timeout\n");
+ }
+
+ 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(udevice_t device, ureq_t setup)
+{
+ RT_ASSERT(device != RT_NULL);
+ RT_ASSERT(setup != RT_NULL);
+
+ switch(setup->request)
+ {
+ 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(device, setup);
+ vcom_connected = RT_TRUE;
+ break;
+ case CDC_GET_LINE_CODING:
+ _cdc_get_line_coding(device, setup);
+ break;
+ case CDC_SET_CONTROL_LINE_STATE:
+ rt_device_control((rt_device_t)device->dcd, CONTROL_SEND_STATUS, RT_NULL);
+ 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 class, it will be called on handle set configuration request.
+ *
+ * @param device the usb device object.
+ *
+ * @return RT_EOK on successful.
+ */
+static rt_err_t _class_run(udevice_t device)
+{
+ RT_ASSERT(device != RT_NULL);
+
+ RT_DEBUG_LOG(RT_DEBUG_USB, ("cdc class run\n"));
+
+ dcd_ep_read(device->dcd, ep_out, ep_out->buffer,
+ ep_out->ep_desc->wMaxPacketSize);
+
+ return RT_EOK;
+}
+
+/**
+ * This function will stop cdc class, it will be called on handle set configuration request.
+ *
+ * @param device the usb device object.
+ *
+ * @return RT_EOK on successful.
+ */
+static rt_err_t _class_stop(udevice_t device)
+{
+ RT_ASSERT(device != RT_NULL);
+
+ RT_DEBUG_LOG(RT_DEBUG_USB, ("cdc class stop\n"));
+
+ return RT_EOK;
+}
+
+/**
+ * This function will handle system sof event.
+ *
+ * @param device the usb device object.
+ *
+ * @return RT_EOK on successful.
+ */
+rt_err_t _class_sof_handler(udevice_t device)
+{
+ rt_uint32_t level;
+ rt_size_t size;
+ static rt_uint32_t frame_count = 0;
+
+ if(vcom_connected != RT_TRUE) return;
+
+ if (frame_count ++ == 5)
+ {
+ rt_size_t mps = ep_in->ep_desc->wMaxPacketSize;
+
+ /* reset the frame counter */
+ frame_count = 0;
+
+ size = RT_RINGBUFFER_SIZE(&tx_ringbuffer);
+ if(size == 0) return;
+
+ size = size > mps ? mps : size;
+
+ level = rt_hw_interrupt_disable();
+ rt_ringbuffer_get(&tx_ringbuffer, ep_in->buffer, size);
+ rt_hw_interrupt_enable(level);
+
+ /* send data to host */
+ dcd_ep_write(device->dcd, ep_in, ep_in->buffer, size);
+ }
+}
+
+static struct uclass_ops ops =
+{
+ _class_run,
+ _class_stop,
+ _class_sof_handler,
+};
+
+/**
+ * This function will configure cdc descriptor.
+ *
+ * @param comm the communcation interface number.
+ * @param data the data interface number.
+ *
+ * @return RT_EOK on successful.
+ */
+static rt_err_t _cdc_descriptor_config(rt_uint8_t comm, rt_uint8_t data)
+{
+ comm_desc.call_mgmt_desc.data_interface = data;
+ comm_desc.union_desc.master_interface = comm;
+ comm_desc.union_desc.slave_interface0 = data;
+
+ return RT_EOK;
+}
+
+/**
+ * This function will create a cdc class instance.
+ *
+ * @param device the usb device object.
+ *
+ * @return RT_EOK on successful.
+ */
+uclass_t rt_usbd_class_cdc_create(udevice_t device)
+{
+ uintf_t intf_comm, intf_data;
+ ualtsetting_t comm_setting, data_setting;
+
+ /* parameter check */
+ RT_ASSERT(device != RT_NULL);
+
+ /* create a cdc class */
+ cdc = rt_usbd_class_create(device, &dev_desc, &ops);
+
+ /* create a cdc communication interface and a cdc data interface */
+ intf_comm = rt_usbd_interface_create(device, _interface_handler);
+ intf_data = rt_usbd_interface_create(device, _interface_handler);
+
+ /* create a communication alternate setting and a data alternate setting */
+ comm_setting = rt_usbd_altsetting_create(&comm_desc.intf_desc,
+ sizeof(struct ucdc_comm_descriptor));
+ data_setting = rt_usbd_altsetting_create(&data_desc.intf_desc,
+ sizeof(struct ucdc_data_descriptor));
+
+ /* configure the cdc interface descriptor */
+ _cdc_descriptor_config(intf_comm->intf_num, intf_data->intf_num);
+
+ /* create a bulk in and a bulk endpoint */
+ ep_out = rt_usbd_endpoint_create(&data_desc.ep_out_desc, _ep_out_handler);
+ ep_in = rt_usbd_endpoint_create(&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, ep_in);
+ rt_usbd_altsetting_add_endpoint(data_setting, 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 class */
+ rt_usbd_class_add_interface(cdc, intf_data);
+
+ /* create a command endpoint */
+ ep_cmd = rt_usbd_endpoint_create(&comm_desc.ep_desc, _ep_cmd_handler);
+
+ /* add the command endpoint to the cdc communication interface */
+ rt_usbd_altsetting_add_endpoint(comm_setting, 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 class */
+ rt_usbd_class_add_interface(cdc, intf_comm);
+
+ return cdc;
+}
+
+/**
+* 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_putc(struct rt_serial_device *serial, char c)
+{
+ rt_uint32_t level;
+
+ if (vcom_connected != RT_TRUE) return 0;
+
+ level = rt_hw_interrupt_disable();
+ if (RT_RINGBUFFER_EMPTY(&tx_ringbuffer))
+ {
+ rt_ringbuffer_putchar(&tx_ringbuffer, c);
+ }
+ rt_hw_interrupt_enable(level);
+
+ return 1;
+}
+
+static int _vcom_getc(struct rt_serial_device *serial)
+{
+ int result;
+ rt_uint8_t ch;
+ rt_uint32_t level;
+
+ result = -1;
+
+ level = rt_hw_interrupt_disable();
+ if (RT_RINGBUFFER_SIZE(&rx_ringbuffer))
+ {
+ rt_ringbuffer_getchar(&rx_ringbuffer, &ch);
+ result = ch;
+ }
+ rt_hw_interrupt_enable(level);
+
+ return result;
+}
+
+static const struct rt_uart_ops usb_vcom_ops =
+{
+ _vcom_configure,
+ _vcom_control,
+ _vcom_putc,
+ _vcom_getc,
+};
+
+void rt_usb_vcom_init(void)
+{
+ struct serial_configure config;
+
+ /* initialize ring buffer */
+ rt_ringbuffer_init(&rx_ringbuffer, rx_pool, CDC_RX_BUFSIZE);
+ rt_ringbuffer_init(&tx_ringbuffer, tx_pool, CDC_TX_BUFSIZE);
+
+ config.baud_rate = BAUD_RATE_115200;
+ config.bit_order = BIT_ORDER_LSB;
+ config.data_bits = DATA_BITS_8;
+ config.parity = PARITY_NONE;
+ config.stop_bits = STOP_BITS_1;
+ config.invert = NRZ_NORMAL;
+
+ vcom_serial.ops = &usb_vcom_ops;
+ vcom_serial.int_rx = &vcom_int_rx;
+ vcom_serial.config = config;
+
+ /* register vcom device */
+ rt_hw_serial_register(&vcom_serial, "vcom",
+ RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
+ RT_NULL);
+}
+
|