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extmod/bluetooth: Support active scanning in BLE.gap_scan().

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This adds an additional optional parameter to gap_scan() to select active
scanning, where scan responses are returned as well as normal scan results.
This parameter is False by default which retains the existing behaviour.
This commit is contained in:
Andrew Leech
2020-08-14 11:49:41 +10:00
committed by Damien George
parent 0bc2c1c105
commit a80a146858
5 changed files with 14 additions and 9 deletions
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5
extmod/btstack/modbluetooth_btstack.c
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@@ -894,7 +894,7 @@ STATIC void scan_duration_timeout_handler(btstack_timer_source_t *ds) {
mp_bluetooth_gap_scan_stop();
}
int mp_bluetooth_gap_scan_start(int32_t duration_ms, int32_t interval_us, int32_t window_us) {
int mp_bluetooth_gap_scan_start(int32_t duration_ms, int32_t interval_us, int32_t window_us, bool active_scan) {
DEBUG_EVENT_printf("mp_bluetooth_gap_scan_start\n");
if (duration_ms > 0) {
@@ -903,8 +903,7 @@ int mp_bluetooth_gap_scan_start(int32_t duration_ms, int32_t interval_us, int32_
btstack_run_loop_add_timer(&scan_duration_timeout);
}
// 0 = passive scan (we don't handle scan response).
gap_set_scan_parameters(0, interval_us / 625, window_us / 625);
gap_set_scan_parameters(active_scan ? 1 : 0, interval_us / 625, window_us / 625);
gap_start_scan();
return 0;