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fix: only let wifiStrength broadcasts move the RSSI baseline

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The emit to a newly connected client also stored the RSSI and time, which
restarted the 10s hold-off and hid a real change from the clients already
connected.  The baseline moves into RssiBroadcast, which ignores
per-client emits, with unit tests.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
cjkas 2026-10-12 18:34:45 +02:00
parent c4472ba8e8
commit e47381b19e
5 changed files with 72 additions and 11 deletions
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48
test/test_utils/test_utils.cpp
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@ -197,6 +197,49 @@ static void test_rssiNeedsEmit_either_direction() {
TEST_ASSERT_TRUE(rssiNeedsEmit(-73, -70, 6, 6, 10000, 3, 10000));
}
/*********************************************************************
* RssiBroadcast
********************************************************************/
static RssiBroadcast broadcastAt(int rssi, int channel, uint32_t at) {
RssiBroadcast b;
b.sent(true, rssi, channel, at);
return b;
}
static void test_rssiBroadcast_client_emit_keeps_baseline() {
// A new client gets the current RSSI right as it drops 5 dBm. The clients
// already connected must still get the change.
RssiBroadcast b = broadcastAt(-60, 6, 0);
b.sent(false, -65, 6, 20000);
TEST_ASSERT_EQUAL_INT(-60, b.rssi);
TEST_ASSERT_EQUAL_UINT32(0, b.at);
TEST_ASSERT_TRUE(b.due(-65, 6, 20000, 3, 10000));
}
static void test_rssiBroadcast_broadcast_moves_baseline() {
RssiBroadcast b = broadcastAt(-60, 6, 0);
b.sent(true, -65, 6, 20000);
TEST_ASSERT_EQUAL_INT(-65, b.rssi);
TEST_ASSERT_EQUAL_UINT32(20000, b.at);
// Measured from the new baseline and too soon after it.
TEST_ASSERT_FALSE(b.due(-66, 6, 40000, 3, 10000));
TEST_ASSERT_FALSE(b.due(-70, 6, 25000, 3, 10000));
TEST_ASSERT_TRUE(b.due(-70, 6, 30000, 3, 10000));
}
static void test_rssiBroadcast_channel_change_is_due() {
RssiBroadcast b = broadcastAt(-60, 6, 1000);
TEST_ASSERT_TRUE(b.due(-60, 11, 1000, 3, 10000));
}
static void test_rssiBroadcast_client_emit_on_disconnect_keeps_baseline() {
RssiBroadcast b = broadcastAt(-60, 6, 0);
b.sent(false, -100, -1, 5000);
TEST_ASSERT_EQUAL_INT(6, b.channel);
TEST_ASSERT_FALSE(b.due(-60, 6, 5000, 3, 10000));
}
static void test_rssiBroadcast_hold_off_across_millis_wrap() {
RssiBroadcast b = broadcastAt(-60, 6, 0xFFFFF000u);
TEST_ASSERT_FALSE(b.due(-70, 6, 0x00001000u, 3, 10000)); // 8192ms later
TEST_ASSERT_TRUE(b.due(-70, 6, 0x00002000u, 3, 10000)); // 12288ms later
}
int main(int argc, char **argv) {
(void)argc;
(void)argv;
@ -228,5 +271,10 @@ int main(int argc, char **argv) {
RUN_TEST(test_rssiNeedsEmit_real_change_after_interval_emits);
RUN_TEST(test_rssiNeedsEmit_real_change_too_soon_waits);
RUN_TEST(test_rssiNeedsEmit_either_direction);
RUN_TEST(test_rssiBroadcast_client_emit_keeps_baseline);
RUN_TEST(test_rssiBroadcast_broadcast_moves_baseline);
RUN_TEST(test_rssiBroadcast_channel_change_is_due);
RUN_TEST(test_rssiBroadcast_client_emit_on_disconnect_keeps_baseline);
RUN_TEST(test_rssiBroadcast_hold_off_across_millis_wrap);
return UNITY_END();
}