/* determine what buffer has data to send and call DMA setup function*/
void USB2UART_DMATransmit(kal_uint8 ep_num, kal_bool b_force_isr_buffer)
{
kal_uint32 addr;
kal_uint32 length=0;
// kal_uint32 savedMask;
// savedMask = SaveAndSetIRQMask();
if(b_force_isr_buffer == KAL_TRUE)
{
length = USB2UART_Check_Transmit_Data(&addr, KAL_FALSE);
}
else
{
length = USB2UART_Check_Transmit_Data(&addr, g_UsbACM.threshold_enable);
}
// RestoreIRQMask(savedMask);
if (length)
{
USB_Dbg_Trace(USB_ACM_DMA_SETUP, drv_get_current_time(), length, USB2Uart_MemType);
/* dma running state is cleared by USB2UART_Tx_DMA_Callback */
// USB_DMA_Setup(ep_num, USB_TX_EP_TYPE, addr, length, USB2UART_Tx_DMA_Callback, KAL_TRUE);
USB_DMA_Setup(ep_num, USB_TX_EP_TYPE, USB_ENDPT_BULK, addr, length, USB2UART_Tx_DMA_Callback, KAL_FALSE, KAL_TRUE, USB_DMA1_TYPE);
}
else
{
g_UsbACM.setup_dma = KAL_FALSE;
}
}
void USB_EndPoint3 (uint32_t event) {
#if USB_DMA
USB_DMA_DESCRIPTOR DD;
if (event & USB_EVT_OUT_DMA_EOT) {
/* End of Transfer */
if (USB_DMA_BufAdr(0x03) != ((uint32_t)DataBuf + 2*DataIn)) {
/* Data Available */
DataIn += P_C*P_S; /* Update Data In Index */
DataIn &= B_S - 1; /* Adjust Data In Index */
if (((DataIn - DataOut) & (B_S - 1)) == (B_S/2)) {
DataRun = 1; /* Data Stream running */
}
} else {
/* No Data */
DataRun = 0; /* Data Stream not running */
DataOut = DataIn; /* Initialize Data Indexes */
}
}
if (event & (USB_EVT_OUT_DMA_EOT) | (USB_EVT_OUT_DMA_NDR)) {
/* End of Transfer or New Descriptor Request */
DD.BufAdr = (uint32_t)DataBuf + 2*DataIn; /* DMA Buffer Address */
DD.BufLen = P_C; /* DMA Packet Count */
DD.MaxSize = 0; /* Must be 0 for Iso Transfer */
DD.InfoAdr = (uint32_t)InfoBuf; /* Packet Info Buffer Address */
DD.Cfg.Val = 0; /* Initial DMA Configuration */
DD.Cfg.Type.IsoEP = 1; /* Iso Endpoint */
USB_DMA_Setup (0x03, &DD); /* Setup DMA */
USB_DMA_Enable(0x03); /* Enable DMA */
}
#else
event = event;
#endif
}
void USB_EndPoint2 (uint32_t event) {
#if USB_DMA
USB_DMA_DESCRIPTOR DD;
#endif
switch (event) {
case USB_EVT_OUT:
MSC_BulkOut();
break;
case USB_EVT_IN:
MSC_BulkIn();
break;
#if USB_DMA
case USB_EVT_OUT_DMA_EOT:
MSC_BulkOut();
// USB_DMA_Enable(MSC_EP_OUT); /* 11.08.09 USB_DMA_Enable is not necessary at this point */
break;
case USB_EVT_OUT_DMA_NDR: // new DMA Descriptor request
DD.BufAdr = (uint32_t)BulkBuf; // DMA Buffer Address
DD.BufLen = MSC_MAX_PACKET; // DMA Buffer Length in bytes
DD.MaxSize = MSC_MAX_PACKET; // Maximum packet size
DD.Cfg.Val = 0; // Initial DMA Configuration
DD.Cfg.Type.IsoEP = 0; // Non-Iso Endpoint
USB_DMA_Setup (MSC_EP_OUT, &DD); // Setup DMA
USB_DMA_Enable(MSC_EP_OUT); // Enable DMA
break;
case USB_EVT_IN_DMA_NDR: // new DMA Descriptor request
MSC_BulkIn();
break;
case USB_EVT_IN_DMA_EOT: // End of Transfer request
// MSC_BulkIn(); /* 11.08.09 MSC_BulkIn must only be called upon a DMA_NDR interrupt */
break;
#endif
}
}
