clean up
renaming function and variables changing indent size
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@ -539,7 +539,7 @@ static void receive_packet(xfer_ctl_t * xfer, /* USB_OTG_OUTEndpointTypeDef * ou
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}
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// Write a single data packet to EPIN FIFO
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static void transmit_fifo_packet(uint8_t fifo_num, uint8_t * src, uint16_t len){
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static void write_fifo_packet(uint8_t fifo_num, uint8_t * src, uint16_t len){
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usb_fifo_t tx_fifo = FIFO_BASE(fifo_num);
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// Pushing full available 32 bit words to fifo
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@ -652,6 +652,7 @@ static void handle_epin_ints(USB_OTG_DeviceTypeDef * dev, USB_OTG_INEndpointType
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if ( dev->DAINT & (1 << (USB_OTG_DAINT_IEPINT_Pos + n)) )
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{
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// IN XFER complete (entire xfer).
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if ( in_ep[n].DIEPINT & USB_OTG_DIEPINT_XFRC )
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{
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@ -667,15 +668,13 @@ static void handle_epin_ints(USB_OTG_DeviceTypeDef * dev, USB_OTG_INEndpointType
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// - 64 bytes or
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// - Half of TX FIFO size (configured by DIEPTXF)
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// Packets to be processed
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uint16_t tx_packet_amount = (in_ep[n].DIEPTSIZ & USB_OTG_DIEPTSIZ_PKTCNT_Msk) >> USB_OTG_DIEPTSIZ_PKTCNT_Pos;
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uint16_t remaining_packets = (in_ep[n].DIEPTSIZ & USB_OTG_DIEPTSIZ_PKTCNT_Msk) >> USB_OTG_DIEPTSIZ_PKTCNT_Pos;
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// Process every single packet (only whole packets can be written to fifo)
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for(uint16_t i = 0; i < tx_packet_amount; i++){
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// amount of bytes EP still needs to transfer
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uint16_t tx_remaining = (in_ep[n].DIEPTSIZ & USB_OTG_DIEPTSIZ_XFRSIZ_Msk) >> USB_OTG_DIEPTSIZ_XFRSIZ_Pos;
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for(uint16_t i = 0; i < remaining_packets; i++){
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uint16_t remaining_bytes = (in_ep[n].DIEPTSIZ & USB_OTG_DIEPTSIZ_XFRSIZ_Msk) >> USB_OTG_DIEPTSIZ_XFRSIZ_Pos;
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// Packet can not be larger than ep max size
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uint16_t packet_size = (tx_remaining > xfer->max_size) ? xfer->max_size : tx_remaining;
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uint16_t packet_size = tu_min16(remaining_bytes, xfer->max_size);
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// It's only possible to write full packets into FIFO. Therefore DTXFSTS register of current
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// EP has to be checked if the buffer can take another WHOLE packet
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@ -683,10 +682,11 @@ static void handle_epin_ints(USB_OTG_DeviceTypeDef * dev, USB_OTG_INEndpointType
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break;
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}
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xfer->queued_len = xfer->total_len - tx_remaining;
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// TODO: queued_len can be removed later
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xfer->queued_len = xfer->total_len - remaining_bytes;
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// Push packet to Tx-FIFO
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transmit_fifo_packet(n, (xfer->buffer + xfer->queued_len), packet_size);
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write_fifo_packet(n, (xfer->buffer + xfer->queued_len), packet_size);
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}
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// Turn off TXFE if all bytes are written.
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