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/*
* Copyright © 2012 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef _AO_PACKET_H_
#define _AO_PACKET_H_
/*
* ao_packet.c
*
* Packet-based command interface
*/
#define AO_PACKET_MAX 64
#define AO_PACKET_SYN (uint8_t) 0xff
struct ao_packet {
uint8_t addr;
uint8_t len;
uint8_t seq;
uint8_t ack;
uint8_t d[AO_PACKET_MAX];
uint8_t callsign[AO_MAX_CALLSIGN];
};
struct ao_packet_recv {
struct ao_packet packet;
int8_t rssi;
uint8_t status;
};
extern __xdata struct ao_packet_recv ao_rx_packet;
extern __xdata struct ao_packet ao_tx_packet;
extern __xdata struct ao_task ao_packet_task;
extern __xdata uint8_t ao_packet_enable;
extern __xdata uint8_t ao_packet_master_sleeping;
extern __pdata uint8_t ao_packet_rx_len, ao_packet_rx_used, ao_packet_tx_used;
extern __xdata uint8_t ao_packet_restart;
void
ao_packet_send(void);
uint8_t
ao_packet_recv(void);
void
ao_packet_flush(void);
void
ao_packet_putchar(char c) __reentrant;
int
_ao_packet_pollchar(void);
#if PACKET_HAS_MASTER
/* ao_packet_master.c */
extern __xdata int8_t ao_packet_last_rssi;
void
ao_packet_master_init(void);
#endif
#if PACKET_HAS_SLAVE
/* ao_packet_slave.c */
void
ao_packet_slave_start(void);
void
ao_packet_slave_stop(void);
void
ao_packet_slave_init(uint8_t enable);
#endif
#endif /* _AO_PACKET_H_ */
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