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add tusbd_cdc_is_busy

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enhance cdc serial device demo
refractor fifo.c
This commit is contained in:
hathach
2013-11-08 14:46:48 +07:00
parent 15d3a418bd
commit 7ff0dbb64c
7 changed files with 146 additions and 149 deletions
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42
demos/device/device_os_none/cdcd_app.c
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@@ -39,6 +39,9 @@
#include "cdcd_app.h"
#if TUSB_CFG_DEVICE_CDC
#include "common/fifo.h" // TODO refractor
//--------------------------------------------------------------------+
// INCLUDE
//--------------------------------------------------------------------+
@@ -54,18 +57,16 @@ OSAL_SEM_DEF(cdcd_semaphore);
static osal_semaphore_handle_t sem_hdl;
static uint8_t cdcd_app_recv_buffer[CDCD_APP_BUFFER_SIZE] TUSB_CFG_ATTR_USBRAM;
static uint8_t cdcd_app_send_buffer[CDCD_APP_BUFFER_SIZE] TUSB_CFG_ATTR_USBRAM;
static uint16_t received_bytes; // set by transfer complete callback
static uint8_t serial_rx_buffer[CDCD_APP_BUFFER_SIZE] TUSB_CFG_ATTR_USBRAM;
static uint8_t serial_tx_buffer[CDCD_APP_BUFFER_SIZE] TUSB_CFG_ATTR_USBRAM;
//--------------------------------------------------------------------+
// INTERNAL OBJECT & FUNCTION DECLARATION
//--------------------------------------------------------------------+
FIFO_DEF(fifo_serial, CDCD_APP_BUFFER_SIZE, uint8_t, true);
//--------------------------------------------------------------------+
// IMPLEMENTATION
//--------------------------------------------------------------------+
void cdcd_serial_app_init(void)
{
sem_hdl = osal_semaphore_create( OSAL_SEM_REF(cdcd_semaphore) );
@@ -78,8 +79,7 @@ void tusbd_cdc_mounted_cb(uint8_t coreid)
{
osal_semaphore_reset(sem_hdl);
received_bytes = 0;
tusbd_cdc_receive(coreid, cdcd_app_recv_buffer, CDCD_APP_BUFFER_SIZE, true);
tusbd_cdc_receive(coreid, serial_rx_buffer, CDCD_APP_BUFFER_SIZE, true);
}
void tusbd_cdc_xfer_isr(uint8_t coreid, tusb_event_t event, cdc_pipeid_t pipe_id, uint32_t xferred_bytes)
@@ -90,9 +90,12 @@ void tusbd_cdc_xfer_isr(uint8_t coreid, tusb_event_t event, cdc_pipeid_t pipe_id
switch(event)
{
case TUSB_EVENT_XFER_COMPLETE:
received_bytes = min16_of(xferred_bytes, CDCD_APP_BUFFER_SIZE); // discard overflow bytes
for(uint8_t i=0; i<xferred_bytes; i++)
{
fifo_write(&fifo_serial, serial_rx_buffer+i);
}
osal_semaphore_post(sem_hdl); // notify main task
break;
break;
case TUSB_EVENT_XFER_ERROR:
xferred_bytes = 0; // ignore
@@ -122,14 +125,23 @@ OSAL_TASK_FUNCTION( cdcd_serial_app_task ) (void* p_task_para)
if ( tusbd_cdc_is_configured(0) )
{
if ( received_bytes )
{ // echo back
memcpy(cdcd_app_send_buffer, cdcd_app_recv_buffer, received_bytes);
tusbd_cdc_send(0, cdcd_app_send_buffer, received_bytes, false);
received_bytes = 0;
// echo back data in the fifo
if ( !tusbd_cdc_is_busy(0, CDC_PIPE_DATA_IN) )
{
uint16_t count=0;
while( fifo_read(&fifo_serial, &serial_tx_buffer[count]) )
{
count++;
}
if (count)
{
tusbd_cdc_send(0, serial_tx_buffer, count, false);
}
}
tusbd_cdc_receive(0, cdcd_app_recv_buffer, CDCD_APP_BUFFER_SIZE, true);
// getting next data from host
tusbd_cdc_receive(0, serial_rx_buffer, CDCD_APP_BUFFER_SIZE, true);
}
OSAL_TASK_LOOP_END