first cut at turnon scripts for EasyTimer v2

[fw/altos] / src / kernel / ao_fec_tx.c

diff --git a/src/kernel/ao_fec_tx.c b/src/kernel/ao_fec_tx.c
index 4941d74581254ec26402218b9ed952cdbc03138b..209581b85efd28d2ca193c6e7c6e65686c6dbd25 100644 (file)
--- a/src/kernel/ao_fec_tx.c
+++ b/src/kernel/ao_fec_tx.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
@@ -53,7 +54,7 @@ uint8_t
 ao_fec_check_crc(const uint8_t *bytes, uint8_t len)
 {
        uint16_t        computed_crc = ao_fec_crc(bytes, len);
-       uint16_t        received_crc = (bytes[len] << 8) | (bytes[len+1]);
+       uint16_t        received_crc = (uint16_t) ((bytes[len] << 8) | (bytes[len+1]));
 
        return computed_crc == received_crc;
 }
@@ -69,11 +70,11 @@ ao_fec_prepare(const uint8_t *in, uint8_t len, uint8_t *extra)
        uint8_t         num_fec;
 
        /* Append CRC */
-       extra[i++] = crc >> 8;
-       extra[i++] = crc;
+       extra[i++] = (uint8_t) (crc >> 8);
+       extra[i++] = (uint8_t) crc;
 
        /* Append FEC -- 1 byte if odd, two bytes if even */
-       num_fec = 2 - (i & 1);
+       num_fec = 2 - (len & 1);
        while (num_fec--)
                extra[i++] = AO_FEC_TRELLIS_TERMINATOR;
        return i;
@@ -111,7 +112,7 @@ ao_fec_encode(const uint8_t *in, uint8_t len, uint8_t *out)
                for (byte = 0; byte < 2; byte++) {
                        if (pair + byte == len)
                                in = extra;
-                       fec |= *in++ ^ *whiten++;
+                       fec |= (uint16_t) (*in++ ^ *whiten++);
                        for (bit = 0; bit < 8; bit++) {
                                encode = encode << 2 | ao_fec_encode_table[fec >> 7];
                                fec = (fec << 1) & 0x7ff;
@@ -125,10 +126,10 @@ ao_fec_encode(const uint8_t *in, uint8_t len, uint8_t *out)
 
                        interleave = (interleave << 2) | ((encode >> (byte_shift + bit_shift)) & 0x3);
                }
-               *out++ = interleave >> 24;
-               *out++ = interleave >> 16;
-               *out++ = interleave >> 8;
-               *out++ = interleave >> 0;
+               *out++ = (uint8_t) (interleave >> 24);
+               *out++ = (uint8_t) (interleave >> 16);
+               *out++ = (uint8_t) (interleave >> 8);
+               *out++ = (uint8_t) (interleave >> 0);
        }
-       return (len + extra_len) * 2;
+       return (uint8_t) ((len + extra_len) * 2);
 }