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fix(ieee802154): skip receive_at when rx window already expired

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This commit is contained in:
zwx
2026-07-15 20:16:35 +08:00
committed by Zhang Wen Xu
parent 0bae8d1e27
commit d60495d8e8
4 changed files with 34 additions and 7 deletions
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8
components/ieee802154/driver/esp_ieee802154_dev.c
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@@ -1093,6 +1093,14 @@ IEEE802154_NOINLINE static void ieee802154_start_receive_at(void* ctx)
esp_err_t ieee802154_receive_at(uint32_t time, uint32_t duration)
{
// If a receive window is specified but it has already elapsed (time + duration is earlier
// than the current time), this is an expired rx window, so skip it and return directly.
if (duration) {
uint32_t current_time = (uint32_t)esp_timer_get_time();
if (is_target_time_expired(time + duration, current_time)) {
return ESP_OK;
}
}
// TODO: Light sleep current optimization, TZ-1613.
IEEE802154_RF_ENABLE();
ieee802154_enter_critical();

7
components/ieee802154/driver/esp_ieee802154_timer.c
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2023-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -62,11 +62,6 @@ uint32_t ieee802154_timer1_get_value(void)
return ieee802154_ll_timer1_get_value();
}
FORCE_INLINE_ATTR bool is_target_time_expired(uint32_t target, uint32_t now)
{
return (((now - target) & (1 << 31)) == 0);
}
void ieee802154_timer0_fire_at(uint32_t fire_time)
{
uint32_t current_time = (uint32_t)esp_timer_get_time();

2
components/ieee802154/include/esp_ieee802154.h
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@@ -607,6 +607,8 @@ extern void esp_ieee802154_receive_at_done(void);
* @brief Set the IEEE 802.15.4 Radio to receive state at a specific time, for a specific duration.
*
* @note Radio will start receiving after the timestamp, and continue receiving for the specific duration.
* @note If a duration is specified and the target end time (time + duration) is earlier than the current
* time, the receive window has already expired and no operation will be performed.
*
* @param[in] time A specific timestamp for starting receiving.
* @param[in] duration A specific duration after which to stop receiving. Set duration = 0 to rx indefinitely.

24
components/ieee802154/private_include/esp_ieee802154_timer.h
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2023-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -12,6 +12,28 @@ extern "C" {
#include "esp_log.h"
#include "esp_err.h"
#include "esp_attr.h"
#include <stdbool.h>
#include <stdint.h>
/**
* @brief Check whether a target time has expired relative to a reference time.
*
* @note This is wrap-around safe for 32-bit timestamps: it returns true when
* @p target is at or before @p now within the first half of the counter range.
*
* @param[in] target The target time to check.
* @param[in] now The current/reference time.
*
* @return
* true if @p target has expired (is at or before @p now).
* false otherwise.
*
*/
FORCE_INLINE_ATTR bool is_target_time_expired(uint32_t target, uint32_t now)
{
return (((now - target) & (1 << 31)) == 0);
}
/**
* @brief Start the IEEE802154 MAC internal timer0.