altos: When slave mode first starts, accept any packet

[fw/altos] / src / drivers / ao_packet.c

diff --git a/src/drivers/ao_packet.c b/src/drivers/ao_packet.c
index d813b25f27448c43c3707dc0f46d689b4024f94b..2bada949e9c04769d60c0ed8748ca3266f46ec11 100644 (file)
--- a/src/drivers/ao_packet.c
+++ b/src/drivers/ao_packet.c
@@ -27,6 +27,7 @@ static __pdata uint8_t rx_seq;
 
 __xdata struct ao_task ao_packet_task;
 __xdata uint8_t ao_packet_enable;
+__xdata uint8_t ao_packet_restart;
 
 #if PACKET_HAS_MASTER
 __xdata uint8_t ao_packet_master_sleeping;
@@ -106,7 +107,8 @@ ao_packet_recv(void)
                /* 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
@@ -126,6 +128,7 @@ ao_packet_recv(void)
                        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