/* EP0 TX handler, called when EP0 interrupt happened and in TX state,
or EP0 just translate from IDLE to TX state */
static void USB_Endpoint0_Tx(void)
{
kal_int32 nBytes;
/* Determine number of bytes to send */
if (gUsbDevice.ep0info.nBytesLeft <= USB_EP0_MAXP)
{
nBytes = gUsbDevice.ep0info.nBytesLeft;
gUsbDevice.ep0info.nBytesLeft = 0;
}
else
{
nBytes = USB_EP0_MAXP;
gUsbDevice.ep0info.nBytesLeft -= USB_EP0_MAXP;
}
/* send out data */
USB_EPFIFOWrite (0, nBytes, gUsbDevice.ep0info.pData);
/* update data pointer and prepare for next transaction */
gUsbDevice.ep0info.pData = (kal_uint8 *)gUsbDevice.ep0info.pData + nBytes;
if (nBytes < USB_EP0_MAXP)
{
gUsbDevice.ep0_state = USB_EP0_IDLE;
/* last data, set end as true*/
USB_Update_EP0_State(USB_EP0_DRV_STATE_WRITE_RDY, KAL_FALSE, KAL_TRUE);
}
else
{
USB_Update_EP0_State(USB_EP0_DRV_STATE_WRITE_RDY, KAL_FALSE, KAL_FALSE);
}
}
static void USB2UART_CtrlDCD(UART_PORT port, IO_level SDCD, module_type ownerid)
{
kal_uint32 savedMask;
kal_bool b_set_intr;
kal_uint8 ep_num = 0;
#ifdef USB_20_ENABLE
kal_uint32 max_intr_pkt_size;
#endif
#ifndef __PRODUCTION_RELEASE__
USB_Dbg_Trace(USB_ACM_SEND_INTERRUPT, drv_get_current_time(), g_UsbACM.intr_state, 0);
if(ownerid != USB2UARTPort.ownerid)
{
EXT_ASSERT( 0, (kal_uint32) ownerid, USB2UARTPort.ownerid, 0);
}
#endif
savedMask = SaveAndSetIRQMask();
if((g_UsbACM.intr_state == ACM_INTR_IDLE)&&(gUsbDevice.is_configured_now == KAL_TRUE))
{
b_set_intr = KAL_TRUE;
g_UsbACM.is_intr_pending_pkt = KAL_FALSE;
ep_num = g_UsbACM.intrpipe->byEP;
}
else
{
b_set_intr = KAL_FALSE;
g_UsbACM.is_intr_pending_pkt = KAL_TRUE;
}
if(SDCD == io_high)
g_UsbACM.intr_pkt.Data = SERIAL_STATE_BRXCARRIER;
else if (SDCD == io_low)
g_UsbACM.intr_pkt.Data = 0x00;
else
ASSERT(0);
RestoreIRQMask(savedMask);
if(b_set_intr == KAL_TRUE)
{
#ifdef USB_20_ENABLE
if(USB_Is_High_Speed() == KAL_TRUE)
max_intr_pkt_size = USB_EP_INTR_MAXP_HS;
else
max_intr_pkt_size = USB_EP_INTR_MAXP_FS;
if(max_intr_pkt_size > sizeof(UsbAcm_Intr_Pkt))
#else
if(USB_EP_INTR_MAXP > sizeof(UsbAcm_Intr_Pkt))
#endif
{
g_UsbACM.intr_state = ACM_INTR_SEND_LAST_PKT;
#ifndef __PRODUCTION_RELEASE__
/* send only one short packet */
USB_Dbg_Trace(USB_ACM_SEND_INTERRUPT2, drv_get_current_time(), g_UsbACM.intr_state, 0);
drv_trace1(TRACE_FUNC, USBACM_INTR, g_UsbACM.intr_pkt.Data);
// kal_prompt_trace(MOD_USB, "ACM INTR %d", g_UsbACM.intr_pkt.Data);
#endif
USB_EPFIFOWrite(ep_num, sizeof(UsbAcm_Intr_Pkt), (kal_uint8 *)&g_UsbACM.intr_pkt);
USB_EP_Bulk_Tx_Ready(ep_num);
}
else
{
g_UsbACM.intr_state = ACM_INTR_SEND_ONE_PKT;
#ifndef __PRODUCTION_RELEASE__
/* send one max packet */
USB_Dbg_Trace(USB_ACM_SEND_INTERRUPT1, drv_get_current_time(), g_UsbACM.intr_state, 0);
drv_trace1(TRACE_FUNC, USBACM_INTR, g_UsbACM.intr_pkt.Data);
// kal_prompt_trace(MOD_USB, "ACM INTR %d", g_UsbACM.intr_pkt.Data);
#endif
#ifdef USB_20_ENABLE
USB_EPFIFOWrite(ep_num, max_intr_pkt_size, (kal_uint8 *)&g_UsbACM.intr_pkt);
#else
USB_EPFIFOWrite(ep_num, USB_EP_INTR_MAXP, (kal_uint8 *)&g_UsbACM.intr_pkt);
#endif
USB_EP_Bulk_Tx_Ready(ep_num);
}
}
}
