extmod/btstack: Implement GAP scan duration_ms parameter.
This commit makes scanning work when duration_ms is set to zero. Prior to this it would not work with duration_ms set to zero.
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@ -889,7 +889,7 @@ int mp_bluetooth_gap_disconnect(uint16_t conn_handle) {
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#if MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
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STATIC btstack_timer_source_t scan_duration_timeout;
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STATIC void hci_initialization_timeout_handler(btstack_timer_source_t *ds) {
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STATIC void scan_duration_timeout_handler(btstack_timer_source_t *ds) {
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(void)ds;
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mp_bluetooth_gap_scan_stop();
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}
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@ -897,9 +897,11 @@ STATIC void hci_initialization_timeout_handler(btstack_timer_source_t *ds) {
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int mp_bluetooth_gap_scan_start(int32_t duration_ms, int32_t interval_us, int32_t window_us) {
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DEBUG_EVENT_printf("mp_bluetooth_gap_scan_start\n");
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btstack_run_loop_set_timer(&scan_duration_timeout, duration_ms);
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btstack_run_loop_set_timer_handler(&scan_duration_timeout, hci_initialization_timeout_handler);
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btstack_run_loop_add_timer(&scan_duration_timeout);
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if (duration_ms > 0) {
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btstack_run_loop_set_timer(&scan_duration_timeout, duration_ms);
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btstack_run_loop_set_timer_handler(&scan_duration_timeout, scan_duration_timeout_handler);
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btstack_run_loop_add_timer(&scan_duration_timeout);
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}
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// 0 = passive scan (we don't handle scan response).
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gap_set_scan_parameters(0, interval_us / 625, window_us / 625);
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