diff options
| author | Vadim Yanitskiy <axilirator@gmail.com> | 2018-03-02 21:24:57 +0700 |
|---|---|---|
| committer | Vadim Yanitskiy <axilirator@gmail.com> | 2018-03-02 21:24:57 +0700 |
| commit | c066787fd5e9696e4af0a43f7bd3fd9392de4931 (patch) | |
| tree | 551ded65f04e9e57b990a9865a7d073942dc3554 /src/host/trxcon/sched_trx.h | |
| parent | ff233256e12b370db78af29d4b283ba5e19becfa (diff) | |
host/trxcon: use integer math for ToA (Timing of Arrival)
There's no need to express ToA value as a float. Let's turn it into
an int16_t with 1/256 symbol period accuracy throughout the code to
avoid both float arithmetic as well as loosing any precision.
Inspired by Idce4178e0b1f7e940ebc22b3e2f340fcd544d4ec.
Change-Id: I99c0f38db08a530d5846c474aba352aa0b68fe86
Diffstat (limited to 'src/host/trxcon/sched_trx.h')
| -rw-r--r-- | src/host/trxcon/sched_trx.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/host/trxcon/sched_trx.h b/src/host/trxcon/sched_trx.h index b01624c8..856566c4 100644 --- a/src/host/trxcon/sched_trx.h +++ b/src/host/trxcon/sched_trx.h @@ -82,7 +82,7 @@ enum trx_lchan_type { typedef int trx_lchan_rx_func(struct trx_instance *trx, struct trx_ts *ts, struct trx_lchan_state *lchan, uint32_t fn, uint8_t bid, sbit_t *bits, - int8_t rssi, float toa); + int8_t rssi, int16_t toa256); typedef int trx_lchan_tx_func(struct trx_instance *trx, struct trx_ts *ts, struct trx_lchan_state *lchan, @@ -174,9 +174,9 @@ struct trx_lchan_state { /*! \brief Sum of RSSI values */ float rssi_sum; /*! \brief Number of TOA values */ - uint8_t toa_num; + uint8_t toa256_num; /*! \brief Sum of TOA values */ - float toa_sum; + int32_t toa256_sum; } meas; /* AMR specific */ @@ -286,7 +286,8 @@ void sched_prim_drop(struct trx_lchan_state *lchan); void sched_prim_flush_queue(struct llist_head *list); int sched_trx_handle_rx_burst(struct trx_instance *trx, uint8_t tn, - uint32_t burst_fn, sbit_t *bits, uint16_t nbits, int8_t rssi, float toa); + uint32_t burst_fn, sbit_t *bits, uint16_t nbits, + int8_t rssi, int16_t toa256); int sched_trx_handle_tx_burst(struct trx_instance *trx, struct trx_ts *ts, struct trx_lchan_state *lchan, uint32_t fn, ubit_t *bits); |