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@@ -56,63 +56,22 @@ static osal_semaphore_t sem_hdl;
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//--------------------------------------------------------------------+
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// INTERNAL OBJECT & FUNCTION DECLARATION
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//--------------------------------------------------------------------+
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-TUSB_CFG_ATTR_USBRAM static uint8_t serial_rx_buffer[SERIAL_BUFFER_SIZE];
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-TUSB_CFG_ATTR_USBRAM static uint8_t serial_tx_buffer[SERIAL_BUFFER_SIZE];
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-
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-FIFO_DEF(fifo_serial, SERIAL_BUFFER_SIZE, uint8_t, true);
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//--------------------------------------------------------------------+
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// tinyusb callbacks
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//--------------------------------------------------------------------+
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-void cdc_serial_app_mount(uint8_t coreid)
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+void cdc_serial_app_mount(uint8_t port)
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{
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- osal_semaphore_reset(sem_hdl);
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-
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- tud_cdc_receive(coreid, serial_rx_buffer, SERIAL_BUFFER_SIZE, true);
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}
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-void cdc_serial_app_umount(uint8_t coreid)
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+void cdc_serial_app_umount(uint8_t port)
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{
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}
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-void tud_cdc_rx_cb(uint8_t coreid, uint32_t xferred_bytes)
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+void tud_cdc_rx_cb(uint8_t port)
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{
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- fifo_write_n(&fifo_serial, serial_rx_buffer, xferred_bytes);
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- osal_semaphore_post(sem_hdl); // notify main task
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-}
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-
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-void tud_cdc_xfer_cb(uint8_t coreid, tusb_event_t event, cdc_pipeid_t pipe_id, uint32_t xferred_bytes)
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-{
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- switch ( pipe_id )
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- {
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- case CDC_PIPE_DATA_OUT:
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- switch(event)
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- {
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- case TUSB_EVENT_XFER_COMPLETE:
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- for(uint8_t i=0; i<xferred_bytes; i++)
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- {
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- fifo_write(&fifo_serial, serial_rx_buffer+i);
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- }
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- osal_semaphore_post(sem_hdl); // notify main task
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- break;
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-
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- case TUSB_EVENT_XFER_ERROR:
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- tud_cdc_receive(0, serial_rx_buffer, SERIAL_BUFFER_SIZE, true); // ignore, queue transfer again
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- break;
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-
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- case TUSB_EVENT_XFER_STALLED:
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- default :
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- break;
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- }
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- break;
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-
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- case CDC_PIPE_DATA_IN:
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- case CDC_PIPE_NOTIFICATION:
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- default:
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- break;
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- }
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}
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//--------------------------------------------------------------------+
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@@ -120,10 +79,6 @@ void tud_cdc_xfer_cb(uint8_t coreid, tusb_event_t event, cdc_pipeid_t pipe_id, u
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//--------------------------------------------------------------------+
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void cdc_serial_app_init(void)
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{
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- sem_hdl = osal_semaphore_create(1, 0);
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- VERIFY(sem_hdl, );
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-
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- osal_task_create(cdc_serial_app_task, "cdc", 128, NULL, CDC_SERIAL_APP_TASK_PRIO);
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}
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tusb_error_t cdc_serial_subtask(void);
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@@ -141,30 +96,14 @@ tusb_error_t cdc_serial_subtask(void)
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{
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OSAL_SUBTASK_BEGIN
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- tusb_error_t error;
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+ if ( tud_mounted(0) && tud_cdc_available(0) )
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+ {
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+ uint8_t buf[64];
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- osal_semaphore_wait(sem_hdl, OSAL_TIMEOUT_WAIT_FOREVER, &error);
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- (void) error; // suppress compiler's warnings
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+ // read and echo back
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+ uint32_t count = tud_cdc_read(0, buf, sizeof(buf));
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- if ( tud_mounted(0) )
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- {
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- // echo back data in the fifo
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- if ( !tud_cdc_busy(0, CDC_PIPE_DATA_IN) )
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- {
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- uint16_t count=0;
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- while( fifo_read(&fifo_serial, &serial_tx_buffer[count]) )
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- {
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- count++;
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- }
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-
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- if (count)
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- {
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- tud_cdc_send(0, serial_tx_buffer, count, false);
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- }
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- }
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-
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- // getting more data from host
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- tud_cdc_receive(0, serial_rx_buffer, SERIAL_BUFFER_SIZE, true);
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+ tud_cdc_write(0, buf, count);
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}
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OSAL_SUBTASK_END
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