Unable to send data with esp now #10895

Gabriele-Cano · 2025-01-23T12:02:27Z

Board

ESP32-C3 Custom PCB

Device Description

It's a custom PCB that I made, it's connected via I2C to MC3419 (accelerometer) and MAX17055 (battery fuel gauge). Then with "PWM" it's connected to AL1783 (led driver), and with a mosfet for running a buzzer.

Hardware Configuration

18 and 19 are for USB data

#define LED_R_PIN 0
#define LED_G_PIN 1
#define LED_B_PIN 4

#define SDA_PIN 5
#define SCL_PIN 6

#define ACCEL_INT_PIN 9

#define BUZZER 2
#define BATTERY_PIN 3 (to check if it's charging)

Version

latest master (checkout manually)

IDE Name

VSCode, PlatformIO

Operating System

Ubuntu 24.04.1 LTS

Flash frequency

80MHz

PSRAM enabled

no

Upload speed

Changing baud rate to 921600 (upload log)

Description

Not sure about PSRAM

I'm having a problem with ESP Now, it seems that my ESPs are able to receive data but not the send. I know that because I tried to use another ESP32 (from Waveshare) and they both received the data sent by the last one.

Both ESPs have the same code i wrote here. When i run the code (I checked that the other esp was turned on) the output is
Data sent
Send Status: Fail

and so on for ever.

I tried to change code but nothing seems to be working

Sketch

#include <esp_now.h>
#include <WiFi.h>

uint8_t peerAddress[] = {0xD8, 0x3B, 0xDA, 0xE3, 0x1C, 0xCC}; // Replace with your peer's MAC

void onDataSent(const uint8_t *mac_addr, esp_now_send_status_t status) {
  Serial.print("Send Status: ");
  Serial.println(status == ESP_NOW_SEND_SUCCESS ? "Success" : "Fail");
}

void onDataRecv(const uint8_t *mac, const uint8_t *data, int len) {
  Serial.print("Data received: ");
  Serial.write(data, len);
  Serial.println();
}

void setup() {
  Serial.begin(115200);
  
  WiFi.mode(WIFI_STA);
  Serial.println(WiFi.macAddress());
  if (esp_now_init() != ESP_OK) {
    Serial.println("Error initializing ESP-NOW");
    return;
  }
  esp_now_register_send_cb(onDataSent);
  esp_now_register_recv_cb(onDataRecv);

  esp_now_peer_info_t peerInfo = {};
  memcpy(peerInfo.peer_addr, peerAddress, 6);
  peerInfo.channel = 0;
  peerInfo.encrypt = false;
  if (esp_now_add_peer(&peerInfo) != ESP_OK) {
    Serial.println("Failed to add peer");
    return;
  }
}

void loop() {
  const char *message = "Hello ESP-NOW";
  esp_err_t result = esp_now_send(peerAddress, (uint8_t *)message, strlen(message));
  if (result == ESP_OK) {
    Serial.println("Data sent");
  } else {
    Serial.println("Send Error");
  }
  delay(2000);
}

Debug Message

Not sure on how to do that with PlatformIO (The program doesn't crash)

Other Steps to Reproduce

I tried another OS with macOS Ventura I think, but the problem remains the same.

I have checked existing issues, online documentation and the Troubleshooting Guide

I confirm I have checked existing issues, online documentation and Troubleshooting guide.

The text was updated successfully, but these errors were encountered:

me-no-dev · 2025-01-23T12:43:37Z

The version of this core that PlatformIO supports is no longer supported. That is also true for the underlying ESP-IDF. Please update to using pioarduino instead and also look into using our own ESP_NOW library. The code above is ESP-IDF

Gabriele-Cano · 2025-01-23T15:03:48Z

I installed Arduino IDE, with the latest version of the framework (3.1.1)

I uploaded the example code for ESP NOW that is called ESP_NOW_Broadcast_Slave and the Master on the other ESP.
ESP is still unable to send a message with esp now. I swear I don't have the least idea on what to try next.

This is the output from the Master using Verbose debug level

[    69][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Dein=========== Before Setup Start ===========
Chip Info:
------------------------------------------
  Model             : ESP32-C3
  Package           : 0
  Revision          : 1.01
  Cores             : 1
  CPU Frequency     : 160 MHz
  XTAL Frequency    : 40 MHz
  Features Bitfield : 0x00000012
  Embedded Flash    : No
  Embedded PSRAM    : No
  2.4GHz WiFi       : Yes
  Classic BT        : No
  BT Low Energy     : Yes
  IEEE 802.15.4     : No
------------------------------------------
INTERNAL Memory Info:
------------------------------------------
  Total Size        :   298100 B ( 291.1 KB)
  Free Bytes        :   263924 B ( 257.7 KB)
  Allocated Bytes   :    30272 B (  29.6 KB)
  Minimum Free Bytes:   259112 B ( 253.0 KB)
  Largest Free Block:   122868 B ( 120.0 KB)
------------------------------------------
Flash Info:
------------------------------------------
  Chip Size         :  4194304 B (4 MB)
  Block Size        :    65536 B (  64.0 KB)
  Sector Size       :     4096 B (   4.0 KB)
  Page Size         :      256 B (   0.2 KB)
  Bus Speed         : 80 MHz
  Bus Mode          : DIO
------------------------------------------
Partitions Info:
------------------------------------------
                nvs : addr: 0x00009000, size:    20.0 KB, type: DATA, subtype: NVS
            otadata : addr: 0x0000E000, size:     8.0 KB, type: DATA, subtype: OTA
               app0 : addr: 0x00010000, size:  1280.0 KB, type:  APP, subtype: OTA_0
               app1 : addr: 0x00150000, size:  1280.0 KB, type:  APP, subtype: OTA_1
             spiffs : addr: 0x00290000, size:  1408.0 KB, type: DATA, subtype: SPIFFS
           coredump : addr: 0x003F0000, size:    64.0 KB, type: DATA, subtype: COREDUMP
------------------------------------------
Software Info:
------------------------------------------
  Compile Date/Time : Jan 23 2025 15:49:06
  Compile Host OS   : linux
  ESP-IDF Version   : v5.3.2-282-gcfea4f7c98-dirty
  Arduino Version   : 3.1.1
------------------------------------------
Board Info:
------------------------------------------
  Arduino Board     : ESP32C3_DEV
  Arduino Variant   : esp32c3
  Arduino FQBN      : esp32:esp32:esp32c3:UploadSpeed=921600,CDCOnBoot=cdc,CPUFreq=160,FlashFreq=80,FlashMode=dio,FlashSize=4M,PartitionScheme=default,DebugLevel=verbose,EraseFlash=none,JTAGAdapter=default,ZigbeeMode=default
============ Before Setup End ============
[   746][I][esp32-hal-periman.c:141] perimanSetPinBus(): Pin 18 already has type USB_DM (38) with bus 0x3fc92fac
[   746][I][esp32-hal-periman.c:141] perimanSetPinBus(): Pin 19 already has type USB_DP (39) with bus 0x3fc92fac
[   753][V][NetworkEvents.cpp:113] _checkForEvent(): Network Event: 101 - WIFI_READY
[   793][V][STA.cpp:186] _onStaEvent(): STA Started
[   794][V][NetworkEvents.cpp:113] _checkForEvent(): Network Event: 110 - STA_START
[   794][V][STA.cpp:110] _onStaArduinoEvent(): Arduino STA Event: 110 - STA_START
ESP-NOW Example - Broadcast Master
Wi-Fi parameters:
  Mode: STA
  MAC Address: D8:3B:DA:E3:1C:CC
  Channel: 6
[   798][V][ESP32_NOW.cpp:18] _esp_now_add_peer(): ff:ff:ff:ff:ff:ff
[   798][V][ESP32_NOW.cpp:311] add(): Peer added - ff:ff:ff:ff:ff:ff
Setup complete. Broadcasting messages every 5 seconds.
=========== After Setup Start ============
INTERNAL Memory Info:
------------------------------------------
  Total Size        :   298100 B ( 291.1 KB)
  Free Bytes        :   206128 B ( 201.3 KB)
  Allocated Bytes   :    85540 B (  83.5 KB)
  Minimum Free Bytes:   206024 B ( 201.2 KB)
  Largest Free Block:   114676 B ( 112.0 KB)
------------------------------------------
GPIO Info:
------------------------------------------
  GPIO : BUS_TYPE[bus/unit][chan]
  --------------------------------------  
    18 : USB_DM
    19 : USB_DP
    20 : UART_RX[0]
    21 : UART_TX[0]
============ After Setup End =============
Broadcasting message: Hello, World! #0
[   822][V][ESP32_NOW.cpp:384] send(): ff:ff:ff:ff:ff:ff, data length 32
[   825][V][ESP32_NOW.cpp:133] _esp_now_tx_cb(): ff:ff:ff:ff:ff:ff : SUCCESS
[   825][I][ESP32_NOW.h:78] onSent(): Message transmission to peer ff:ff:ff:ff:ff:ff successful
Broadcasting message: Hello, World! #1
[  5828][V][ESP32_NOW.cpp:384] send(): ff:ff:ff:ff:ff:ff, data length 32
[  5831][V][ESP32_NOW.cpp:133] _esp_now_tx_cb(): ff:ff:ff:ff:ff:ff : SUCCESS
[  5831][I][ESP32_NOW.h:78] onSent(): Message transmission to peer ff:ff:ff:ff:ff:ff successful
Broadcasting message: Hello, World! #2
[ 10834][V][ESP32_NOW.cpp:384] send(): ff:ff:ff:ff:ff:ff, data length 32
[ 10845][V][ESP32_NOW.cpp:133] _esp_now_tx_cb(): ff:ff:ff:ff:ff:ff : SUCCESS
[ 10845][I][ESP32_NOW.h:78] onSent(): Message transmission to peer ff:ff:ff:ff:ff:ff successful
....

This is from the Slave:

[    69][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Dein=========== Before Setup Start ===========
Chip Info:
------------------------------------------
  Model             : ESP32-C3
  Package           : 0
  Revision          : 1.01
  Cores             : 1
  CPU Frequency     : 160 MHz
  XTAL Frequency    : 40 MHz
  Features Bitfield : 0x00000012
  Embedded Flash    : No
  Embedded PSRAM    : No
  2.4GHz WiFi       : Yes
  Classic BT        : No
  BT Low Energy     : Yes
  IEEE 802.15.4     : No
------------------------------------------
INTERNAL Memory Info:
------------------------------------------
  Total Size        :   298116 B ( 291.1 KB)
  Free Bytes        :   263940 B ( 257.8 KB)
  Allocated Bytes   :    30272 B (  29.6 KB)
  Minimum Free Bytes:   259128 B ( 253.1 KB)
  Largest Free Block:   122868 B ( 120.0 KB)
------------------------------------------
Flash Info:
------------------------------------------
  Chip Size         :  4194304 B (4 MB)
  Block Size        :    65536 B (  64.0 KB)
  Sector Size       :     4096 B (   4.0 KB)
  Page Size         :      256 B (   0.2 KB)
  Bus Speed         : 80 MHz
  Bus Mode          : DIO
------------------------------------------
Partitions Info:
------------------------------------------
                nvs : addr: 0x00009000, size:    20.0 KB, type: DATA, subtype: NVS
            otadata : addr: 0x0000E000, size:     8.0 KB, type: DATA, subtype: OTA
               app0 : addr: 0x00010000, size:  1280.0 KB, type:  APP, subtype: OTA_0
               app1 : addr: 0x00150000, size:  1280.0 KB, type:  APP, subtype: OTA_1
             spiffs : addr: 0x00290000, size:  1408.0 KB, type: DATA, subtype: SPIFFS
           coredump : addr: 0x003F0000, size:    64.0 KB, type: DATA, subtype: COREDUMP
------------------------------------------
Software Info:
------------------------------------------
  Compile Date/Time : Jan 23 2025 15:49:06
  Compile Host OS   : linux
  ESP-IDF Version   : v5.3.2-282-gcfea4f7c98-dirty
  Arduino Version   : 3.1.1
------------------------------------------
Board Info:
------------------------------------------
  Arduino Board     : ESP32C3_DEV
  Arduino Variant   : esp32c3
  Arduino FQBN      : esp32:esp32:esp32c3:UploadSpeed=921600,CDCOnBoot=cdc,CPUFreq=160,FlashFreq=80,FlashMode=dio,FlashSize=4M,PartitionScheme=default,DebugLevel=verbose,EraseFlash=none,JTAGAdapter=default,ZigbeeMode=default
============ Before Setup End ============
[  5606][I][esp32-hal-periman.c:141] perimanSetPinBus(): Pin 18 already has type USB_DM (38) with bus 0x3fc92f94
[  5606][I][esp32-hal-periman.c:141] perimanSetPinBus(): Pin 19 already has type USB_DP (39) with bus 0x3fc92f94
[  5613][V][NetworkEvents.cpp:113] _checkForEvent(): Network Event: 101 - WIFI_READY
[  5657][V][STA.cpp:186] _onStaEvent(): STA Started
[  5658][V][NetworkEvents.cpp:113] _checkForEvent(): Network Event: 110 - STA_START
[  5658][V][STA.cpp:110] _onStaArduinoEvent(): Arduino STA Event: 110 - STA_START
ESP-NOW Example - Broadcast Slave
Wi-Fi parameters:
  Mode: STA
  MAC Address: D8:3B:DA:E2:64:EC
  Channel: 6
Setup complete. Waiting for a master to broadcast a message...
=========== After Setup Start ============
INTERNAL Memory Info:
------------------------------------------
  Total Size        :   298116 B ( 291.1 KB)
  Free Bytes        :   206188 B ( 201.4 KB)
  Allocated Bytes   :    85512 B (  83.5 KB)
  Minimum Free Bytes:   206040 B ( 201.2 KB)
  Largest Free Block:   114676 B ( 112.0 KB)
------------------------------------------
GPIO Info:
------------------------------------------
  GPIO : BUS_TYPE[bus/unit][chan]
  --------------------------------------  
    18 : USB_DM
    19 : USB_DP
    20 : UART_RX[0]
    21 : UART_TX[0]
============ After Setup End =============

me-no-dev · 2025-01-23T15:43:00Z

@P-R-O-C-H-Y PTAL

Gabriele-Cano · 2025-01-23T20:15:16Z

I don't know if it can be useful but I tried with an older custom PCB very similar to the one it's not working.

(the previous revision is actually sending data, the latest one doesn't send but still can receive)

I noticed that the chip of the older one is rev 0.4 (ESP32-C3FH4) while the new one is rev 1.1 (ESP32-C3FH4X).

I know it shouldn't matter but this is the only hint that I have.

(I can send schematic if needed, but I don't know how it could be a hardware problem)

Gabriele-Cano added the Status: Awaiting triage Issue is waiting for triage label Jan 23, 2025

me-no-dev closed this as completed Jan 23, 2025

me-no-dev reopened this Jan 23, 2025

Gabriele-Cano closed this as completed Jan 24, 2025

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Unable to send data with esp now #10895

Unable to send data with esp now #10895

Gabriele-Cano commented Jan 23, 2025 •

edited

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me-no-dev commented Jan 23, 2025

Gabriele-Cano commented Jan 23, 2025 •

edited

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me-no-dev commented Jan 23, 2025

Gabriele-Cano commented Jan 23, 2025

Unable to send data with esp now #10895

Unable to send data with esp now #10895

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Gabriele-Cano commented Jan 23, 2025 • edited Loading

Board

Device Description

Hardware Configuration

Version

IDE Name

Operating System

Flash frequency

PSRAM enabled

Upload speed

Description

Sketch

Debug Message

Other Steps to Reproduce

I have checked existing issues, online documentation and the Troubleshooting Guide

me-no-dev commented Jan 23, 2025

Gabriele-Cano commented Jan 23, 2025 • edited Loading

This is from the Slave:

me-no-dev commented Jan 23, 2025

Gabriele-Cano commented Jan 23, 2025

Gabriele-Cano commented Jan 23, 2025 •

edited

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Gabriele-Cano commented Jan 23, 2025 •

edited

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