ESP32-S3 with PN532 wiring diagram on SPI

Diamond2 · October 21, 2023, 6:47am

Hello,

I have the board ESP32-S3-WROOM-1-N16R8 and PN532 Blue board (same in PN532 NFC/RFID — ESPHome)

The switch on PN532 is configured same as the image for SPI mode

Wiring diagram:
esp32-s3-wroom-1-N16R8 PN532 BLUE Version
GPIO13/SCK ------------------------------ SCK
GPIO11/MISI ------------------------------ MI
GPIO12/MISO ----------------------------- MO/SDA/TX
GPIO10/SS --------------------------------- NSC/SCL/RX
GND ------------------------------------------ GND
5V --------------------------------------------- 5V

Here is ESPHOME config

esphome:
  name: esp32-s3
  friendly_name: ESP32-S3-WROOM-1-N16R8

esp32:
  board: esp32-s3-devkitc-1
  framework:
    type: arduino

# Enable logging
logger:

web_server:
  port: 80

# Enable Home Assistant API
api:
  encryption:
    key: "/oAGdSpUJSkfYsHsZ9JJmAVHFv1Lxj3I0clPn6gEZx4="

ota:
  password: "1f28aca325cee5a069b9ba3459912fb4"

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Esp32-S3 Fallback Hotspot"
    password: "BR6eQssNJSDF"

captive_portal:

spi:
  clk_pin: GPIO10
  miso_pin: GPIO12
  mosi_pin: GPIO11

pn532_spi:
  cs_pin: GPIO13
  update_interval: 1s


binary_sensor:
  - platform: pn532
    uid: 74-10-37-94
    name: "PN532 NFC Tag"
  - platform: pn532
    uid: 53-ED-E6-AC-00-00-00
    name: "New Tag"
  - platform: pn532
    uid: 53-ED-E6-AC
    name: "New prefix tag"

I’m using ESPHome 2023.10.1

Here is the log:

INFO ESPHome 2023.10.1
INFO Reading configuration /config/esphome/esp32-s3.yaml...
INFO Starting log output from esp32-s3.local using esphome API
INFO Successfully connected to esp32-s3.local
[13:48:12][I][app:102]: ESPHome version 2023.10.1 compiled on Oct 21 2023, 13:31:52
[13:48:12][C][wifi:546]: WiFi:
[13:48:12][C][wifi:382]:   Local MAC: FILTERED
[13:48:12][C][wifi:383]:   SSID: [redacted]
[13:48:12][C][wifi:384]:   IP Address: FILTERED
[13:48:13][C][wifi:386]:   BSSID: [redacted]
[13:48:13][C][wifi:387]:   Hostname: 'esp32-s3'
[13:48:13][C][wifi:389]:   Signal strength: -47 dB ▂▄▆█
[13:48:13][C][wifi:393]:   Channel: 1
[13:48:13][C][wifi:394]:   Subnet: 255.255.255.0
[13:48:13][C][wifi:395]:   Gateway: FILTERED
[13:48:13][C][wifi:396]:   DNS1: FILTERED
[13:48:13][C][wifi:397]:   DNS2: 0.0.0.0
[13:48:13][C][logger:361]: Logger:
[13:48:13][C][logger:362]:   Level: DEBUG
[13:48:13][C][logger:363]:   Log Baud Rate: 115200
[13:48:13][C][logger:365]:   Hardware UART: UART0
[13:48:13][C][spi:067]: SPI bus:
[13:48:13][C][spi:068]:   CLK Pin: GPIO10
[13:48:13][C][spi:069]:   SDI Pin: GPIO12
[13:48:13][C][spi:070]:   SDO Pin: GPIO11
[13:48:13][C][spi:072]:   Using HW SPI: SPI
[13:48:13][C][pn532:375]: PN532:
[13:48:13][C][pn532:387]:   Update Interval: 1.0s
[13:48:13][C][pn532:390]:   Tag 'PN532 NFC Tag'
[13:48:13][C][pn532:390]:   Tag 'New Tag'
[13:48:13][C][pn532:390]:   Tag 'New prefix tag'
[13:48:13][C][pn532_spi:156]:   CS Pin: GPIO13
[13:48:13][C][captive_portal:088]: Captive Portal:
[13:48:13][C][web_server:161]: Web Server:
[13:48:13][C][web_server:162]:   Address: esp32-s3.local:80
[13:48:13][C][mdns:115]: mDNS:
[13:48:13][C][mdns:116]:   Hostname: esp32-s3
[13:48:13][C][ota:097]: Over-The-Air Updates:
[13:48:13][C][ota:098]:   Address: esp32-s3.local:3232
[13:48:13][C][ota:101]:   Using Password.
[13:48:13][C][api:138]: API Server:
[13:48:13][C][api:139]:   Address: esp32-s3.local:6053
[13:48:13][C][api:141]:   Using noise encryption: YES

However, when I approach the NFC tag, no message in the log for new tag. The tag is working on phone, I can read the uid by using NFC tool app.

Could you please help to check if

the wiring diagram is OK?
ESPHOME config is OK?

Thanks for your help.

zoogara · October 21, 2023, 10:21am

Do you get any response in the logs if you remove the binary sensors?

Personally I use I2C for my PN532 but SPI should work just fine.

zoogara · October 21, 2023, 10:27am

Ok - should have spotted it straight away - I think CLK is SCK and CS goes to SS - i.e. swap pins 10 and 13

Diamond2 · October 21, 2023, 10:59am

@zoogara
Thanks for your reply. Swap the cable or just edit the esphome config?

Diamond2 · October 21, 2023, 11:01am

After removing binrary sensor I don’t receive any log…

zoogara · October 21, 2023, 8:36pm

Either should work.

Diamond2 · October 23, 2023, 7:55am

Thanks. Unfortunately, after doing the swap of esphome config from

...
spi:
  clk_pin: GPIO10
  miso_pin: GPIO12
  mosi_pin: GPIO11
pn532_spi:
  cs_pin: GPIO13
  update_interval: 1s
...

to

...
spi:
  clk_pin: GPIO13
  miso_pin: GPIO12
  mosi_pin: GPIO11
pn532_spi:
  cs_pin: GPIO10
  update_interval: 1s
...

The LED on PN532 isn’t turned on (position: Red circle in pic below). No log on NFC tag as well.

Peeps · October 23, 2023, 2:19pm

I had similar problems.
But if you dont see a burning LED my guess would be your wiring is not okay.

zoogara · October 24, 2023, 7:04am

Assuming the wiring is as at the top of the post, and your config is as above, then you have also swapped MOSI and MISO…

With this wiring:

GPIO13/CLK ------------------------------ SCK
GPIO11/MISO ----------------------------- MI
GPIO12/MOSI ----------------------------- MO/SDA/TX
GPIO10/CS --------------------------------- NSS/SCL/RX
GND ------------------------------------------ GND
5V --------------------------------------------- 5V

this is the config:

spi:
  clk_pin: GPIO13
  miso_pin: GPIO11
  mosi_pin: GPIO12
pn532_spi:
  cs_pin: GPIO10
  update_interval: 1s

adrianrdzv · February 14, 2024, 6:14pm

Has anyone managed to make this nfc board work with a ESP32-S3R8? It works with a ESP32 WROOM32 but haven’t managed to make it work witha Liligo T-Display-S3, which has a ESP32-S3R8.
This is what I’m working on:

I have a l logic level converter in between to convert 5V - 3.3V signals which again, works fine with the ESP32-WROOM32