esp_wifi_config_espnow_rate bug or undocumented calling order (IDFGH-10505)

[CmosC1CA]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

IDF version.

v5.0.2-dirty

Operating System used.

Linux

How did you build your project?

Eclipse IDE

If you are using Windows, please specify command line type.

None

Development Kit.

NodeMCU ESP-32S (ESP-WROOM-32)

Power Supply used.

USB

What is the expected behavior?

I should be able to call esp_wifi_config_espnow_rate after esp_wifi_start according to the documentation. (https://docs.espressif.com/projects/esp-idf/en/v5.0.2/esp32/api-reference/network/esp_now.html?highlight=esp_wifi_config_espnow_rate#_CPPv427esp_wifi_config_espnow_rate16wifi_interface_t15wifi_phy_rate_t)

But this is not the case if WIFI_IF_STA and WIFI_PROTOCOL_LR is used.

What is the actual behavior?

The buggy behavior is ONLY present in WIFI_IF_STA mode WIFI_IF_AP works as expected.

This calling order is valid, according to the docs but results in an assert crash, at esp_wifi_config_espnow_rate

ESP_ERROR_CHECK(esp_wifi_start());
ESP_ERROR_CHECK(esp_wifi_set_protocol(WIFI_IF_STA, WIFI_PROTOCOL_LR));
ESP_ERROR_CHECK(esp_wifi_config_espnow_rate(WIFI_IF_STA, WIFI_PHY_RATE_LORA_500K));
ESP_ERROR_CHECK(esp_now_init());

BUT

If you call esp_wifi_config_espnow_rate AFTER esp_now_init it works fine.

ESP_ERROR_CHECK(esp_wifi_start());
ESP_ERROR_CHECK(esp_wifi_set_protocol(WIFI_IF_STA, WIFI_PROTOCOL_LR));
ESP_ERROR_CHECK(esp_now_init());
ESP_ERROR_CHECK(esp_wifi_config_espnow_rate(WIFI_IF_STA, WIFI_PHY_RATE_LORA_500K));

Either this should be fixed, or the documentation should mention that esp_wifi_config_espnow_rate should be called after esp_now_init in case WIFI_IF_STA is used.
But based on that this behavior is not present with WIFI_IF_AP, I would guess that this is a bug.

(Suggestion) Also your example code (https://github.com/espressif/esp-idf/blob/v5.0.2/examples/wifi/espnow/main/espnow_example_main.c) should contain a call to esp_wifi_config_espnow_rate with LORA values, so the users would not have to spend hours to figure out the call order.

Steps to reproduce.

Using WIFI_MODE_STA / WIFI_IF_STA , WIFI_PROTOCOL_LR mode, call esp_wifi_config_espnow_rate with an LR value (WIFI_PHY_RATE_LORA_500K/WIFI_PHY_RATE_LORA_250K) before esp_now_init.

ESP_ERROR_CHECK(esp_wifi_start());
ESP_ERROR_CHECK(esp_wifi_set_protocol(WIFI_IF_STA, WIFI_PROTOCOL_LR));
ESP_ERROR_CHECK(esp_wifi_config_espnow_rate(WIFI_IF_STA, WIFI_PHY_RATE_LORA_500K));
ESP_ERROR_CHECK(esp_now_init());

Debug Logs.

I (723) wifi:mode : sta (78:e3:6d:0b:03:ec)
I (723) wifi:enable tsf
W (723) wifi:invalid rate, need change phy mode to LR
ESP_ERROR_CHECK failed: esp_err_t 0xffffffff (ESP_FAIL) at 0x400d6486

More Information.

Related :
#11595

[sywxf]

`
const wifi_promiscuous_pkt_t *ppkt = (wifi_promiscuous_pkt_t *)buf;
const wifi_ieee80211_packet_t *ipkt = (wifi_ieee80211_packet_t *)ppkt->payload;
const wifi_ieee80211_mac_hdr_t *hdr = &ipkt->hdr;

if (memcmp(&(hdr->addr2), revice_mac, 6) == 0) // 判断为节点时修改RSSI
{
    // ESP_LOGI(TAG, "rssi:%d,add1:" MACSTR "add2:" MACSTR "add3:" MACSTR "add4:" MACSTR "duration_id: %d, frame_ctrl: %d, sequence_ctrl: %d",
    //          rssi, MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
    //          MAC2STR(hdr->addr3), MAC2STR(hdr->addr4),
    //          hdr->duration_id, hdr->frame_ctrl, hdr->sequence_ctrl);
    rssi = ppkt->rx_ctrl.rssi;
    rate = ppkt->rx_ctrl.rate;`

不管是ap还是站,也不管在esp_now_init();之前还是之后设置LR_500K或者LR_250K,只要能运行,在混杂模式下读出的速率都不是对应的速率, 为什么?我的代码有错误?

[zhangyanjiaoesp]

@CmosC1CA Thanks for your report, we have identified this issue and have the MR for it, will merge it ASAP.

[zhangyanjiaoesp]

@sywxf 你期望读到的速率是什么？实际读到的速率是什么？你的场景是什么？使用 ESP-NOW 的时候设置为 LR only 模式，然后用 sniffer 抓包得到对应的 rssi 和速率吗？

[sywxf]

@sywxf你期望读到的速率是什么？实际读到的速率是什么？你的场景是什么？使用 ESP-NOW 的时候设置为 LR only 模式，然后用 sniffer 抓包得到对应的 rssi 和速率吗？

感谢您的回复,我只是在源码里看到接收回调中可以转换wifi_pkt_rx_ctrl_t类型,其中有rate和rssi,当使用AP设置速率,没有报错,日志输出RATE的值对应设置的速率并不相同,并没有用sniffer抓包.

我期望在速率大于3200bps不丢包的情况下距离越远越好.

[zhangyanjiaoesp]

@sywxf 因为这个问题已经关闭，而且你的问题和原问题并不相同，请你创建一个新的 ticket 来记录你的问题。