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refactor: move max airtime computation to macro

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By that we make it reusable and also ensure the integer division is
executed correctly (it was correct before, but just because the mult and
div operator are left associating).
This commit is contained in:
Felix Moessbauer 2026-03-28 12:35:14 +01:00 • committed by Felix Moessbauer
parent 7c1dfd9a95
commit e797d55c7a
1 changed files with 3 additions and 1 deletions
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4
src/Dispatcher.cpp
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@ -11,6 +11,8 @@ namespace mesh {
#define MAX_RX_DELAY_MILLIS 32000 // 32 seconds
#define MIN_TX_BUDGET_RESERVE_MS 100 // min budget (ms) required before allowing next TX
#define MIN_TX_BUDGET_AIRTIME_DIV 2 // require at least 1/N of estimated airtime as budget before TX
/// add some time to get the max allowed airtime for the est. airtime
#define MAX_TX_AIRTIME_FOR_EST(est_airtime) (((est_airtime) * 3) / 2)
#ifndef NOISE_FLOOR_CALIB_INTERVAL
#define NOISE_FLOOR_CALIB_INTERVAL 2000 // 2 seconds
@ -325,7 +327,7 @@ void Dispatcher::checkSend() {
} else {
memcpy(&raw[len], outbound->payload, outbound->payload_len); len += outbound->payload_len;
uint32_t max_airtime = _radio->getEstAirtimeFor(len)*3/2;
uint32_t max_airtime = MAX_TX_AIRTIME_FOR_EST(_radio->getEstAirtimeFor(len));
outbound_start = _ms->getMillis();
bool success = _radio->startSendRaw(raw, len);
if (!success) {