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esp32: In recv_cb, get espnow rssi from recv_info->rx_ctrl.

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IDF v5.0 provides access to rssi value for received espnow packets via
recv_info arg to recv_cb().

Signed-off-by: Glenn Moloney <glenn.moloney@gmail.com>
This commit is contained in:
Glenn Moloney 2023-05-25 10:40:50 +10:00 committed by Damien George
parent e4650125b8
commit 2cc3711e5e
1 changed files with 1 additions and 16 deletions
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17
ports/esp32/modespnow.c
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@ -313,21 +313,6 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_1(espnow_stats_obj, espnow_stats);
// - to return unique bytestrings for each peer which supports more efficient
// application memory usage and peer handling.
// Get the RSSI value from the wifi packet header
static inline int8_t _get_rssi_from_wifi_pkt(const uint8_t *msg) {
// Warning: Secret magic to get the rssi from the wifi packet header
// See espnow.c:espnow_recv_cb() at https://github.com/espressif/esp-now/
// In the wifi packet the msg comes after a wifi_promiscuous_pkt_t
// and a espnow_frame_format_t.
// Backtrack to get a pointer to the wifi_promiscuous_pkt_t.
static const size_t sizeof_espnow_frame_format = 39;
wifi_promiscuous_pkt_t *wifi_pkt =
(wifi_promiscuous_pkt_t *)(msg - sizeof_espnow_frame_format -
sizeof(wifi_promiscuous_pkt_t));
return wifi_pkt->rx_ctrl.rssi;
}
// Lookup a peer in the peers table and return a reference to the item in the
// peers_table. Add peer to the table if it is not found (may alloc memory).
// Will not return NULL.
@ -577,7 +562,7 @@ STATIC void recv_cb(const esp_now_recv_info_t *recv_info, const uint8_t *msg, in
header.magic = ESPNOW_MAGIC;
header.msg_len = msg_len;
#if MICROPY_ESPNOW_RSSI
header.rssi = _get_rssi_from_wifi_pkt(msg);
header.rssi = recv_info->rx_ctrl->rssi;
header.time_ms = mp_hal_ticks_ms();
#endif // MICROPY_ESPNOW_RSSI