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Merge pull request #85 from grissiom/fix-usb-serial 

Fix usb serial
This commit is contained in:
Bernard Xiong 2013-05-11 23:18:03 -07:00
parent c8d85a5c35 aa179e4438
commit 94b7fee4d2
2 changed files with 99 additions and 62 deletions
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125
components/drivers/usb/usbdevice/class/cdc_vcom.c
View File

@ -20,15 +20,24 @@
#ifdef RT_USB_DEVICE_CDC
#define CDC_RX_BUFSIZE 64
#define CDC_RX_BUFSIZE 2048
#define CDC_TX_BUFSIZE 2048
static rt_uint8_t rx_pool[CDC_RX_BUFSIZE];
static rt_uint8_t tx_pool[CDC_TX_BUFSIZE];
static rt_uint8_t rx_rbp[CDC_RX_BUFSIZE];
static rt_uint8_t tx_rbp[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 struct rt_serial_device vcom_serial;
#define CDC_MaxPacketSize 64
ALIGN(RT_ALIGN_SIZE)
static rt_uint8_t rx_buf[CDC_RX_BUFSIZE];
ALIGN(RT_ALIGN_SIZE)
static rt_uint8_t tx_buf[CDC_TX_BUFSIZE];
static rt_bool_t vcom_connected = RT_FALSE;
static rt_bool_t vcom_in_sending = RT_FALSE;
static struct udevice_descriptor dev_desc =
{
@ -38,7 +47,7 @@ static struct udevice_descriptor dev_desc =
USB_CLASS_CDC, //bDeviceClass;
0x00, //bDeviceSubClass;
0x00, //bDeviceProtocol;
0x40, //bMaxPacketSize0;
CDC_MaxPacketSize, //bMaxPacketSize0;
_VENDOR_ID, //idVendor;
_PRODUCT_ID, //idProduct;
USB_BCD_DEVICE, //bcdDevice;
@ -153,25 +162,44 @@ const static char* _ustring[] =
static rt_err_t _ep_in_handler(udevice_t device, uclass_t cls, rt_size_t size)
{
rt_uint32_t level;
rt_size_t length;
rt_uint32_t remain;
cdc_eps_t eps;
rt_size_t mps;
eps = (cdc_eps_t)cls->eps;
mps = eps->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, eps->ep_in->buffer, length);
rt_hw_interrupt_enable(level);
remain = RT_RINGBUFFER_SIZE(&tx_ringbuffer);
if (remain != 0)
{
/* send data to host */
dcd_ep_write(device->dcd, eps->ep_in, eps->ep_in->buffer, length);
vcom_in_sending = RT_TRUE;
rt_ringbuffer_get(&tx_ringbuffer, eps->ep_in->buffer, remain);
rt_hw_interrupt_enable(level);
return RT_EOK;
/* send data to host */
dcd_ep_write(device->dcd, eps->ep_in, eps->ep_in->buffer, remain);
return RT_EOK;
}
if (size != 0 &&
(size % CDC_MaxPacketSize) == 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. */
vcom_in_sending = RT_TRUE;
rt_hw_interrupt_enable(level);
dcd_ep_write(device->dcd, eps->ep_in, RT_NULL, 0);
return RT_EOK;
}
else
{
vcom_in_sending = RT_FALSE;
rt_hw_interrupt_enable(level);
return RT_EOK;
}
}
/**
@ -192,6 +220,7 @@ static rt_err_t _ep_out_handler(udevice_t device, uclass_t cls, rt_size_t size)
eps = (cdc_eps_t)cls->eps;
/* receive data from USB VCOM */
level = rt_hw_interrupt_disable();
rt_ringbuffer_put(&rx_ringbuffer, eps->ep_out->buffer, size);
rt_hw_interrupt_enable(level);
@ -337,8 +366,8 @@ static rt_err_t _class_run(udevice_t device, uclass_t cls)
RT_DEBUG_LOG(RT_DEBUG_USB, ("cdc class run\n"));
eps = (cdc_eps_t)cls->eps;
eps->ep_in->buffer=tx_pool;
eps->ep_out->buffer=rx_pool;
eps->ep_in->buffer = tx_buf;
eps->ep_out->buffer = rx_buf;
dcd_ep_read(device->dcd, eps->ep_out, eps->ep_out->buffer,
eps->ep_out->ep_desc->wMaxPacketSize);
@ -373,31 +402,27 @@ static rt_err_t _class_sof_handler(udevice_t device, uclass_t cls)
{
rt_uint32_t level;
rt_size_t size;
static rt_uint32_t frame_count = 0;
cdc_eps_t eps;
if(vcom_connected != RT_TRUE) return -RT_ERROR;
if (vcom_connected != RT_TRUE)
return -RT_ERROR;
if (vcom_in_sending)
return RT_EOK;
eps = (cdc_eps_t)cls->eps;
if (frame_count ++ == 5)
{
rt_size_t mps = eps->ep_in->ep_desc->wMaxPacketSize;
/* reset the frame counter */
frame_count = 0;
size = RT_RINGBUFFER_SIZE(&tx_ringbuffer);
if (size == 0)
return -RT_EFULL;
size = RT_RINGBUFFER_SIZE(&tx_ringbuffer);
if(size == 0) return -RT_EFULL;
level = rt_hw_interrupt_disable();
rt_ringbuffer_get(&tx_ringbuffer, eps->ep_in->buffer, size);
rt_hw_interrupt_enable(level);
size = size > mps ? mps : size;
level = rt_hw_interrupt_disable();
rt_ringbuffer_get(&tx_ringbuffer, eps->ep_in->buffer, size);
rt_hw_interrupt_enable(level);
/* send data to host */
dcd_ep_write(device->dcd, eps->ep_in, eps->ep_in->buffer, size);
}
/* send data to host */
vcom_in_sending = RT_TRUE;
dcd_ep_write(device->dcd, eps->ep_in, eps->ep_in->buffer, size);
return RT_EOK;
}
@ -534,8 +559,24 @@ static rt_err_t _vcom_control(struct rt_serial_device *serial,
static int _vcom_putc(struct rt_serial_device *serial, char c)
{
rt_uint32_t level;
int cnt = 500;
if (vcom_connected != RT_TRUE) return 0;
if (vcom_connected != RT_TRUE)
return 0;
/* if the buffer is full, there is a chance that the host would pull some
* data out soon. But we cannot rely on that and if we wait to long, just
* return. */
for (cnt = 500;
RT_RINGBUFFER_EMPTY(&tx_ringbuffer) == 0 && cnt;
cnt--)
{
rt_kprintf("wait for %d\n", cnt);
if (vcom_connected != RT_TRUE)
return 0;
}
if (cnt == 0)
return 0;
level = rt_hw_interrupt_disable();
if (RT_RINGBUFFER_EMPTY(&tx_ringbuffer))
@ -579,8 +620,8 @@ 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);
rt_ringbuffer_init(&rx_ringbuffer, rx_rbp, CDC_RX_BUFSIZE);
rt_ringbuffer_init(&tx_ringbuffer, tx_rbp, CDC_TX_BUFSIZE);
config.baud_rate = BAUD_RATE_115200;
config.bit_order = BIT_ORDER_LSB;
@ -595,7 +636,7 @@ void rt_usb_vcom_init(void)
/* register vcom device */
rt_hw_serial_register(&vcom_serial, "vcom",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
RT_NULL);
}

36
components/drivers/usb/usbdevice/core/core.c
View File

@ -1294,39 +1294,35 @@ static void rt_usbd_thread_entry(void* parameter)
uep_t ep;
/* receive message */
if(rt_mq_recv(usb_mq, &msg, sizeof(struct udev_msg), RT_WAITING_FOREVER)
!= RT_EOK ) continue;
if(rt_mq_recv(usb_mq,
&msg, sizeof(struct udev_msg),
RT_WAITING_FOREVER) != RT_EOK )
continue;
device = rt_usbd_find_device(msg.dcd);
if(device == RT_NULL)
{
rt_kprintf("invalid usb device\n");
continue;
}
switch (msg.type)
{
case USB_MSG_SETUP_NOTIFY:
device = rt_usbd_find_device(msg.dcd);
if(device != RT_NULL)
_setup_request(device, (ureq_t)msg.content.setup_msg.packet);
else
rt_kprintf("invalid usb device\n");
case USB_MSG_SOF:
_sof_notify(device);
break;
case USB_MSG_DATA_NOTIFY:
device = rt_usbd_find_device(msg.dcd);
if(device == RT_NULL)
{
rt_kprintf("invalid usb device\n");
break;
}
ep = rt_usbd_find_endpoint(device, &cls, msg.content.ep_msg.ep_addr);
if(ep != RT_NULL)
ep->handler(device, cls, msg.content.ep_msg.size);
else
rt_kprintf("invalid endpoint\n");
break;
case USB_MSG_SOF:
device = rt_usbd_find_device(msg.dcd);
if(device != RT_NULL)
_sof_notify(device);
else
rt_kprintf("invalid usb device\n");
case USB_MSG_SETUP_NOTIFY:
_setup_request(device, (ureq_t)msg.content.setup_msg.packet);
break;
default:
rt_kprintf("unknown msg type\n");
break;
}
}