diff options
Diffstat (limited to 'stacks/max25-bcpr/include/bcpr/bcpr_hdlc.h')
| -rw-r--r-- | stacks/max25-bcpr/include/bcpr/bcpr_hdlc.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/stacks/max25-bcpr/include/bcpr/bcpr_hdlc.h b/stacks/max25-bcpr/include/bcpr/bcpr_hdlc.h new file mode 100644 index 0000000..0cf0bfb --- /dev/null +++ b/stacks/max25-bcpr/include/bcpr/bcpr_hdlc.h @@ -0,0 +1,57 @@ +#ifndef BCPR_HDLC_H +#define BCPR_HDLC_H + +#include "bcpr/bcpr.h" +#include <stdint.h> + +typedef struct bcpr_hbuf { + unsigned rd, wr; + uint16_t buf[BCPR_HDLC_BUF]; +} bcpr_hbuf_t; + +typedef struct bcpr_channel { + int tx_delay, tx_tail, slottime, ppersist, fulldup; +} bcpr_channel_t; + +typedef struct bcpr_hdlc { + int bitrate; + bcpr_channel_t ch; + bcpr_hbuf_t rx_hbuf; + bcpr_hbuf_t tx_hbuf; + int rx_state; + unsigned bitstream, bitbuf; + int numbits; + int dcd; + int rx_len; + uint8_t *rx_bp; + uint8_t rx_buffer[BCPR_MAXFLEN + 2]; + int tx_state; + int numflags; + unsigned tx_bitstream; + int ptt; + int slotcnt; + unsigned tx_bitbuf; + int tx_numbits; + int tx_len; + uint8_t *tx_bp; + uint8_t tx_buffer[BCPR_MAXFLEN + 2]; + /* pending KISS payload (without FEND/cmd) queued for TX */ + uint8_t pending[BCPR_MAXFLEN]; + int pending_len; + int have_pending; +} bcpr_hdlc_t; + +void bcpr_hdlc_init(bcpr_hdlc_t *h, int bitrate, const bcpr_channel_t *ch); +void bcpr_hdlc_putbits(bcpr_hdlc_t *h, unsigned bits); +unsigned bcpr_hdlc_getbits(bcpr_hdlc_t *h); +void bcpr_hdlc_receiver(bcpr_hdlc_t *h, + void (*on_frame)(const uint8_t *kiss, int len, void *ud), + void *ud); +void bcpr_hdlc_transmitter(bcpr_hdlc_t *h); +void bcpr_hdlc_arbitrate(bcpr_hdlc_t *h); +int bcpr_hdlc_queue_kiss(bcpr_hdlc_t *h, const uint8_t *kiss, int len); +int bcpr_hdlc_ptt(const bcpr_hdlc_t *h); +/* Force idle TX — drop pending frame and clear keyed state. */ +void bcpr_hdlc_abort_tx(bcpr_hdlc_t *h); + +#endif |