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_AHDLCDCB Struct Reference #include <dev/ahdlc.h> Detailed Description Asynchronous HDLC device information structure. The start of this structure is equal to the UARTDCB structure. Data Fields u_long  dcb_modeflags   Mode flags. u_long  dcb_statusflags   Status flags. u_long  dcb_rtimeout   Read timeout. u_long  dcb_wtimeout   Write timeout. HANDLE  dcb_tx_rdy   Queue of threads waiting for output buffer empty. HANDLE  dcb_rx_rdy   Queue of threads waiting for a character in the input buffer. u_char  dcb_base   Hardware base address. volatile u_char *  dcb_rx_buf   Input buffer. volatile u_char  dcb_rx_idx   Input buffer index for next incoming byte. u_char  dcb_rd_idx   Input buffer index for next byte to read. u_char *  dcb_tx_buf   Output buffer. volatile u_char  dcb_tx_idx   Output buffer index for next outgoing byte. u_char  dcb_wr_idx   Output buffer index for next byte to write. HANDLE  dcb_mf_evt   HDLC mode change event queue. u_long  dcb_rx_accm   32-bit receive ACCM. u_long  dcb_tx_accm   256-bit transmit ACCM. u_short  dcb_rx_mru   Maximum receive MRU. u_short  dcb_tx_mru   Maximum transmit MRU. Field Documentation u_char _AHDLCDCB::dcb_base   Hardware base address. This is a copy of the base address in the NUTDEVICE structure and required by the interrupt routine. HANDLE _AHDLCDCB::dcb_mf_evt   HDLC mode change event queue. The frame receiver thread is waiting on this queue until the device is switched to HDLC mode. volatile u_char* _AHDLCDCB::dcb_rx_buf   Input buffer. This buffer is filled by the the receiver interrupt, so the contents of the buffer is volatile. volatile u_char _AHDLCDCB::dcb_rx_idx   Input buffer index for next incoming byte. This volatile index is incremented by the receiver interrupt. HANDLE _AHDLCDCB::dcb_rx_rdy   Queue of threads waiting for a character in the input buffer. Threads are added to this queue when the output buffer is empty. volatile u_char _AHDLCDCB::dcb_tx_idx   Output buffer index for next outgoing byte. This volatile index is incremented by the transmit interrupt. HANDLE _AHDLCDCB::dcb_tx_rdy   Queue of threads waiting for output buffer empty. Threads are added to this queue when the output buffer is full or when flushing the output buffer.

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