altos: Remove *_TO_DATA macros

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

diff --git a/src/drivers/ao_packet.c b/src/drivers/ao_packet.c
index d813b25f27448c43c3707dc0f46d689b4024f94b..1c931921ca83851d6f9db26afdbb9359d3c0fd3b 100644 (file)
--- a/src/drivers/ao_packet.c
+++ b/src/drivers/ao_packet.c
@@ -3,7 +3,8 @@
  *
  * 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
@@ -21,16 +22,16 @@ __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;
 
-static __xdata char tx_data[AO_PACKET_MAX];
-static __xdata char rx_data[AO_PACKET_MAX];
+static __xdata uint8_t tx_data[AO_PACKET_MAX];
+static __xdata uint8_t rx_data[AO_PACKET_MAX];
 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;
-__xdata uint8_t ao_packet_last_rssi;
 #endif
 
 void
@@ -54,14 +55,14 @@ ao_packet_send(void)
 }
 
 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
@@ -84,16 +85,13 @@ ao_packet_recv(void)
        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,
                       ao_config.callsign,
                       AO_MAX_CALLSIGN) != 0 &&
-           ao_xmemcmp(ao_config.callsign, CODE_TO_XDATA("N0CALL"), 7) != 0)
+           ao_xmemcmp(ao_config.callsign, "N0CALL", 7) != 0)
                return 0;
 
        /* SYN packets carry no data */
@@ -106,7 +104,8 @@ 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 +125,7 @@ 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
@@ -152,6 +152,9 @@ ao_packet_flush(void)
 void
 ao_packet_putchar(char c) __reentrant
 {
+       /* 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();
@@ -163,8 +166,9 @@ ao_packet_putchar(char c) __reentrant
                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;