*
* 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.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
#include "ao.h"
-__xdata struct ao_packet_recv ao_rx_packet;
-__xdata struct ao_packet ao_tx_packet;
-__pdata uint8_t ao_packet_rx_len, ao_packet_rx_used, ao_packet_tx_used;
+struct ao_packet_recv ao_rx_packet;
+struct ao_packet ao_tx_packet;
+uint8_t ao_packet_rx_len, ao_packet_rx_used, ao_packet_tx_used;
-static __xdata char tx_data[AO_PACKET_MAX];
-static __xdata char rx_data[AO_PACKET_MAX];
-static __pdata uint8_t rx_seq;
+static uint8_t tx_data[AO_PACKET_MAX];
+static uint8_t rx_data[AO_PACKET_MAX];
+static uint8_t rx_seq;
-__xdata struct ao_task ao_packet_task;
-__xdata uint8_t ao_packet_enable;
+struct ao_task ao_packet_task;
+uint8_t ao_packet_enable;
+uint8_t ao_packet_restart;
#if PACKET_HAS_MASTER
-__xdata uint8_t ao_packet_master_sleeping;
-__xdata uint8_t ao_packet_last_rssi;
+uint8_t ao_packet_master_sleeping;
#endif
void
#endif
/* If any tx data is pending then copy it into the tx packet */
if (ao_packet_tx_used && ao_tx_packet.len == 0) {
- ao_xmemcpy(&ao_tx_packet.d, tx_data, ao_packet_tx_used);
+ memcpy(&ao_tx_packet.d, tx_data, ao_packet_tx_used);
ao_tx_packet.len = ao_packet_tx_used;
ao_tx_packet.seq++;
ao_packet_tx_used = 0;
}
uint8_t
-ao_packet_recv(void)
+ao_packet_recv(uint16_t timeout)
{
uint8_t dma_done;
#ifdef AO_LED_GREEN
ao_led_on(AO_LED_GREEN);
#endif
- dma_done = ao_radio_recv(&ao_rx_packet, sizeof (struct ao_packet_recv));
+ dma_done = ao_radio_recv(&ao_rx_packet, sizeof (struct ao_packet_recv), timeout);
#ifdef AO_LED_GREEN
ao_led_off(AO_LED_GREEN);
#endif
if (!(ao_rx_packet.status & AO_RADIO_STATUS_CRC_OK))
return 0;
-#if PACKET_HAS_MASTER
- ao_packet_last_rssi = ao_rx_packet.rssi;
-#endif
/* Accept packets with matching call signs, or any packet if
* our callsign hasn't been configured
*/
- if (ao_xmemcmp(ao_rx_packet.packet.callsign,
+ if (memcmp(ao_rx_packet.packet.callsign,
ao_config.callsign,
AO_MAX_CALLSIGN) != 0 &&
- ao_xmemcmp(ao_config.callsign, CODE_TO_XDATA("N0CALL"), 7) != 0)
+ memcmp(ao_config.callsign, "N0CALL", 7) != 0)
return 0;
/* SYN packets carry no data */
/* Check for incoming data at the next sequence and
* for an empty data buffer
*/
- if (ao_rx_packet.packet.seq == (uint8_t) (rx_seq + (uint8_t) 1) &&
+ if ((ao_rx_packet.packet.seq == (uint8_t) (rx_seq + (uint8_t) 1) ||
+ ao_packet_restart) &&
ao_packet_rx_used == ao_packet_rx_len) {
/* Copy data to the receive data buffer and set up the
* offsets
*/
- ao_xmemcpy(rx_data, ao_rx_packet.packet.d, ao_rx_packet.packet.len);
+ memcpy(rx_data, ao_rx_packet.packet.d, ao_rx_packet.packet.len);
ao_packet_rx_used = 0;
ao_packet_rx_len = ao_rx_packet.packet.len;
ao_wakeup(&ao_stdin_ready);
}
}
+ ao_packet_restart = 0;
/* If the other side has seen the latest data we queued,
* wake up any task waiting to send data and let them go again
#endif /* PACKET_HAS_MASTER */
void
-ao_packet_putchar(char c) __reentrant
+ao_packet_putchar(char c)
{
+ /* No need to block interrupts, all variables here
+ * are only manipulated in task context
+ */
while (ao_packet_tx_used == AO_PACKET_MAX && ao_packet_enable) {
#if PACKET_HAS_MASTER
ao_packet_flush();
tx_data[ao_packet_tx_used++] = c;
}
-char
-ao_packet_pollchar(void) __critical
+/* May be called with interrupts blocked */
+int
+_ao_packet_pollchar(void)
{
if (!ao_packet_enable)
return AO_READ_AGAIN;