GROW R503 Fingerprint reader keep restarting once I scan a finger

### The problem

Hi!
I'm encourtering an issue with the GROW Fingerprint reader R503. It make the ESP32 reboot when scanning a finger.
When I unplug the UART BUS the board doesn't restart when I start scanning but obviously it doesn't work either.

It restart only with the UART connected.

The logs reports a CORRUPTED address.

I tried 4 boards (ESP32 WROOM 32 USBC or USB micro / Nodemcu v2 / Nodemcu V3) and i always have the same behaviour.

The fingerprint is recognized and seems to be correctly wired (Aura LED working as intended)

### Which version of ESPHome has the issue?

2024.7.2

### What type of installation are you using?

Home Assistant Add-on

### Which version of Home Assistant has the issue?

2024.7.2

### What platform are you using?

ESP32

### Board

Generic AliExpress ESP32 WROOM 32 USBC

### Component causing the issue

UART?

### Example YAML snippet

```yaml
substitutions:
name: cabane-a-velo
friendly_name: Cabane-a-velo

esphome:
name: ${name}
friendly_name: ${friendly_name}
min_version: 2024.6.0
name_add_mac_suffix: false
project:
name: esphome.web
version: '1.0'

esp32:
board: esp32dev
framework:
type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:
services:
- service: enroll
variables:
finger_id: int
num_scans: int
then:
- fingerprint_grow.enroll:
finger_id: !lambda 'return finger_id;'
num_scans: !lambda 'return num_scans;'
- service: cancel_enroll
then:
- fingerprint_grow.cancel_enroll:
- service: delete
variables:
finger_id: int
then:
- fingerprint_grow.delete:
finger_id: !lambda 'return finger_id;'
- service: delete_all
then:
- fingerprint_grow.delete_all:
# Allow Over-The-Air updates
ota:
- platform: esphome

wifi:
ssid: "****"
password: "****"

# Set up a wifi access point
ap: {}

# In combination with the `ap` this allows the user
# to provision wifi credentials to the device via WiFi AP.
captive_portal:

# Sets up Bluetooth LE (Only on ESP32) to allow the user
# to provision wifi credentials to the device.

# To have a "next url" for improv serial
web_server:

#UART 2 !!
uart:
rx_pin: GPIO16
tx_pin: GPIO17
baud_rate: 57600

fingerprint_grow:
sensing_pin: GPIO4

on_finger_scan_start:
- fingerprint_grow.aura_led_control:
state: BREATHING
color: PURPLE
speed: 250
count: 5

on_finger_scan_invalid:
- text_sensor.template.publish:
id: fingerprint_state
state: "Invalid finger"
- fingerprint_grow.aura_led_control:
state: FLASHING
color: RED
speed: 25
count: 5

on_finger_scan_matched:
#- homeassistant.event:
# event: esphome.cabane_finger_scan_matched
# data:
# finger_id: !lambda 'return finger_id;'
# confidence: !lambda 'return confidence;'
- fingerprint_grow.aura_led_control:
state: FLASHING
color: GREEN
speed: 25
count: 5
- text_sensor.template.publish:
id: fingerprint_state
state: !lambda 'return "Authorized finger " + to_string(finger_id) + ", confidence " + to_string(confidence);'
# Pushing a tag_scanned event based on finger_id only if confidence is greater than 50
- if:
condition:
lambda: 'return confidence > 50;'
then:
- homeassistant.tag_scanned: !lambda |-
switch (finger_id) {
case 0:
return "person_a";
case 1:
return "person_b";
default:
return "person_unknown";
}
- switch.turn_off: relay
- delay: 15s
- switch.turn_on: relay

on_finger_scan_unmatched:
- fingerprint_grow.aura_led_control:
state: FLASHING
speed: 25
color: RED
count: 2

on_finger_scan_misplaced:
- text_sensor.template.publish:
id: fingerprint_state
state: "Misplaced finger"
- fingerprint_grow.aura_led_control:
state: BREATHING
color: PURPLE
speed: 250
count: 5

on_enrollment_scan:
#- homeassistant.event:
# event: esphome.cabane_finger_enrollment_scan
# data:
# finger_id: !lambda 'return finger_id;'
# scan_num: !lambda 'return scan_num;'
- fingerprint_grow.aura_led_control:
state: FLASHING
speed: 25
color: BLUE
count: 2
- fingerprint_grow.aura_led_control:
state: ALWAYS_ON
speed: 0
color: PURPLE
count: 0

on_enrollment_done:
#- homeassistant.event:
# event: esphome.cabane_finger_enrollment_done
# data:
# finger_id: !lambda 'return finger_id;'
- fingerprint_grow.aura_led_control:
state: BREATHING
speed: 250
color: GREEN
count: 2

on_enrollment_failed:
#- homeassistant.event:
# event: esphome.cabane_finger_enrollment_failed
# data:
# finger_id: !lambda 'return finger_id;'
- fingerprint_grow.aura_led_control:
state: BREATHING
speed: 25
color: RED
count: 4

switch:
- platform: gpio
id: relay
pin: GPIO23
restore_mode: ALWAYS_ON
name: "Relay 12V"

- platform: restart
name: "Cabanavelo Restart"

button:
- platform: template
id: button_relay
on_press:
then:
- switch.turn_off: relay
- delay: 15s
- switch.turn_on: relay

text_sensor:
- platform: template
id: fingerprint_state
name: "${friendly_name} State"
- platform: version
name: "${friendly_name} ESPHome Version"

binary_sensor:
- platform: fingerprint_grow
id: fingerprint_enrolling
name: "${friendly_name} Enrolling"

# Status de connection
- platform: status
name: "${friendly_name} Status"

# Intégration des entités capteur pour Lovelace
sensor:
- platform: fingerprint_grow
fingerprint_count:
name: "${friendly_name} Count"
last_finger_id:
name: "${friendly_name} Last Finger ID"
last_confidence:
name: "${friendly_name} Last Confidence"
status:
name: "${friendly_name} Status"
capacity:
name: "${friendly_name} Capacity"
security_level:
name: "${friendly_name} Security Level"
- platform: wifi_signal
name: "${friendly_name} WiFi Signal"
update_interval: 60s
```

### Anything in the logs that might be useful for us?

```txt
[12:12:43][I][logger:156]: Log initialized
[12:12:43][C][safe_mode:079]: There have been 3 suspected unsuccessful boot attempts
[12:12:43][D][esp32.preferences:114]: Saving 1 preferences to flash...
[12:12:43][D][esp32.preferences:143]: Saving 1 preferences to flash: 0 cached, 1 written, 0 failed
[12:12:43][I][app:029]: Running through setup()...
[12:12:43][C][uart.arduino_esp32:077]: Setting up UART...
[12:12:43][C][switch.gpio:011]: Setting up GPIO Switch 'Relay 12V'...
[12:12:43][D][switch:012]: 'Relay 12V' Turning ON.
[12:12:43][D][switch:055]: 'Relay 12V': Sending state ON
[12:12:43][D][switch:012]: 'Relay 12V' Turning ON.
[12:12:43][C][fingerprint_grow:060]: Setting up Grow Fingerprint Reader...
[12:12:43][D][fingerprint_grow:232]: Checking password
[12:12:43][D][fingerprint_grow:237]: Password verified
[12:12:43][D][fingerprint_grow:260]: Getting parameters
[12:12:43][D][fingerprint_grow:263]: Got parameters
[12:12:43][D][sensor:094]: 'Cabane-a-velo Status': Sending state 4.00000 with 0 decimals of accuracy
[12:12:43][D][sensor:094]: 'Cabane-a-velo Capacity': Sending state 200.00000 with 0 decimals of accuracy
[12:12:43][D][sensor:094]: 'Cabane-a-velo Security Level': Sending state 3.00000 with 0 decimals of accuracy
[12:12:43][D][binary_sensor:036]: 'Cabane-a-velo Enrolling': Sending state OFF
[12:12:43][D][fingerprint_grow:285]: Getting fingerprint count
[12:12:43][D][fingerprint_grow:288]: Got fingerprint count
[12:12:43][D][sensor:094]: 'Cabane-a-velo Count': Sending state 0.00000 with 0 decimals of accuracy
[12:12:43][D][text_sensor:064]: 'Cabane-a-velo ESPHome Version': Sending state '2024.7.2 Jul 28 2024, 11:52:05'
[12:12:43][D][binary_sensor:034]: 'Cabane-a-velo Status': Sending initial state OFF
[12:12:43][C][wifi:047]: Setting up WiFi...
[12:12:43][C][wifi:060]: Starting WiFi...
[12:12:43][C][wifi:061]: Local MAC: 08:D1:F9:E1:64:B0
[12:12:43][D][wifi:481]: Starting scan...
[12:12:43][D][fingerprint_grow:348]: Setting Aura LED
[12:12:43][D][fingerprint_grow:352]: Aura LED set
[12:12:43][D][fingerprint_grow:125]: Scan and match
[12:12:43][D][fingerprint_grow:156]: Getting image 1
[12:12:43][D][fingerprint_grow:168]: Finger Misplaced
[12:12:43][D][text_sensor:064]: 'Cabane-a-velo State': Sending state 'Misplaced finger'
[12:12:48]E (10927) task_wdt: Task watchdog got triggered. The following tasks did not reset the watchdog in time:
[12:12:48]E (10927) task_wdt: - loopTask (CPU 1)
[12:12:48]E (10927) task_wdt: Tasks currently running:
[12:12:48]E (10927) task_wdt: CPU 0: IDLE
[12:12:48]E (10927) task_wdt: CPU 1: IDLE
[12:12:48]E (10927) task_wdt: Aborting.
[12:12:48]
[12:12:48]abort() was called at PC 0x400fd388 on core 0
[12:12:48]
[12:12:48]
[12:12:48]Backtrace:0x400837f5:0x3ffbe9bc |<-CORRUPTED
[12:12:48]
[12:12:48]
[12:12:48]
[12:12:48]
[12:12:48]ELF file SHA256: 0000000000000000
[12:12:48]
[12:12:48]Rebooting...
[12:12:48]ets Jul 29 2019 12:21:46
[12:12:48]
[12:12:48]rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
[12:12:48]configsip: 0, SPIWP:0xee
[12:12:48]clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
[12:12:48]mode:DIO, clock div:2
[12:12:48]load:0x3fff0030,len:1184
[12:12:48]load:0x40078000,len:13132
[12:12:48]load:0x40080400,len:3036
[12:12:48]entry 0x400805e4
[12:12:48][I][logger:156]: Log initialized
[12:12:48][C][safe_mode:079]: There have been 4 suspected unsuccessful boot attempts
[12:12:48][D][esp32.preferences:114]: Saving 1 preferences to flash...
[12:12:48][D][esp32.preferences:143]: Saving 1 preferences to flash: 0 cached, 1 written, 0 failed
[12:12:48][I][app:029]: Running through setup()...
[12:12:48][C][uart.arduino_esp32:077]: Setting up UART...
[12:12:48][C][switch.gpio:011]: Setting up GPIO Switch 'Relay 12V'...
[12:12:49][D][switch:012]: 'Relay 12V' Turning ON.
[12:12:49][D][switch:055]: 'Relay 12V': Sending state ON
[12:12:49][D][switch:012]: 'Relay 12V' Turning ON.
[12:12:49][C][fingerprint_grow:060]: Setting up Grow Fingerprint Reader...
[12:12:49][D][fingerprint_grow:232]: Checking password
[12:12:49][D][fingerprint_grow:237]: Password verified
[12:12:49][D][fingerprint_grow:260]: Getting parameters
[12:12:49][D][fingerprint_grow:263]: Got parameters
[12:12:49][D][sensor:094]: 'Cabane-a-velo Status': Sending state 4.00000 with 0 decimals of accuracy
[12:12:49][D][sensor:094]: 'Cabane-a-velo Capacity': Sending state 200.00000 with 0 decimals of accuracy
[12:12:49][D][sensor:094]: 'Cabane-a-velo Security Level': Sending state 3.00000 with 0 decimals of accuracy
[12:12:49][D][binary_sensor:036]: 'Cabane-a-velo Enrolling': Sending state OFF
[12:12:49][D][fingerprint_grow:285]: Getting fingerprint count
[12:12:49][D][fingerprint_grow:288]: Got fingerprint count
[12:12:49][D][sensor:094]: 'Cabane-a-velo Count': Sending state 0.00000 with 0 decimals of accuracy
[12:12:49][D][text_sensor:064]: 'Cabane-a-velo ESPHome Version': Sending state '2024.7.2 Jul 28 2024, 11:52:05'
[12:12:49][D][binary_sensor:034]: 'Cabane-a-velo Status': Sending initial state OFF
[12:12:49][C][wifi:047]: Setting up WiFi...
[12:12:49][C][wifi:060]: Starting WiFi...
[12:12:49][C][wifi:061]: Local MAC: 08:D1:F9:E1:64:B0
[12:12:49][D][wifi:481]: Starting scan...
[12:12:49][D][fingerprint_grow:348]: Setting Aura LED
[12:12:49][D][fingerprint_grow:352]: Aura LED set
[12:12:49][D][fingerprint_grow:125]: Scan and match
[12:12:49][D][fingerprint_grow:156]: Getting image 1
[12:12:49][D][fingerprint_grow:168]: Finger Misplaced
[12:12:49][D][text_sensor:064]: 'Cabane-a-velo State': Sending state 'Misplaced finger'
[12:12:53]E (10927) task_wdt: Task watchdog got triggered. The following tasks did not reset the watchdog in time:
[12:12:53]E (10927) task_wdt: - loopTask (CPU 1)
[12:12:54]E (10927) task_wdt: Tasks currently running:
[12:12:54]E (10927) task_wdt: CPU 0: IDLE
[12:12:54]E (10927) task_wdt: CPU 1: IDLE
[12:12:54]E (10927) task_wdt: Aborting.
[12:12:54]
[12:12:54]abort() was called at PC 0x400fd388 on core 0
[12:12:54]
[12:12:54]
[12:12:54]Backtrace:0x400837f5:0x3ffbe9bc |<-CORRUPTED
[12:12:54]
[12:12:54]
[12:12:54]
[12:12:54]
[12:12:54]ELF file SHA256: 0000000000000000
[12:12:54]
[12:12:54]Rebooting...
[12:12:54]ets Jul 29 2019 12:21:46
[12:12:54]
[12:12:54]rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
[12:12:54]configsip: 0, SPIWP:0xee
[12:12:54]clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
[12:12:54]mode:DIO, clock div:2
[12:12:54]load:0x3fff0030,len:1184
[12:12:54]load:0x40078000,len:13132
[12:12:55]load:0x40080400,len:3036
[12:12:55]entry 0x400805e4
[12:12:55][I][logger:156]: Log initialized
[12:12:55][C][safe_mode:079]: There have been 5 suspected unsuccessful boot attempts
[12:12:55][D][esp32.preferences:114]: Saving 1 preferences to flash...
[12:12:55][D][esp32.preferences:143]: Saving 1 preferences to flash: 0 cached, 1 written, 0 failed
[12:12:55][I][app:029]: Running through setup()...
[12:12:55][C][uart.arduino_esp32:077]: Setting up UART...
[12:12:55][C][switch.gpio:011]: Setting up GPIO Switch 'Relay 12V'...
[12:12:55][D][switch:012]: 'Relay 12V' Turning ON.
[12:12:55][D][switch:055]: 'Relay 12V': Sending state ON
[12:12:55][D][switch:012]: 'Relay 12V' Turning ON.
[12:12:55][C][fingerprint_grow:060]: Setting up Grow Fingerprint Reader...
[12:12:55][D][fingerprint_grow:232]: Checking password
[12:12:55][D][fingerprint_grow:237]: Password verified
[12:12:55][D][fingerprint_grow:260]: Getting parameters
[12:12:55][D][fingerprint_grow:263]: Got parameters
[12:12:55][D][sensor:094]: 'Cabane-a-velo Status': Sending state 4.00000 with 0 decimals of accuracy
[12:12:55][D][sensor:094]: 'Cabane-a-velo Capacity': Sending state 200.00000 with 0 decimals of accuracy
[12:12:56][D][sensor:094]: 'Cabane-a-velo Security Level': Sending state 3.00000 with 0 decimals of accuracy
[12:12:56][D][binary_sensor:036]: 'Cabane-a-velo Enrolling': Sending state OFF
[12:12:56][D][fingerprint_grow:285]: Getting fingerprint count
[12:12:56][D][fingerprint_grow:288]: Got fingerprint count
[12:12:56][D][sensor:094]: 'Cabane-a-velo Count': Sending state 0.00000 with 0 decimals of accuracy
[12:12:56][D][text_sensor:064]: 'Cabane-a-velo ESPHome Version': Sending state '2024.7.2 Jul 28 2024, 11:52:05'
[12:12:56][D][binary_sensor:034]: 'Cabane-a-velo Status': Sending initial state OFF
[12:12:56][C][wifi:047]: Setting up WiFi...
[12:12:56][C][wifi:060]: Starting WiFi...
[12:12:56][C][wifi:061]: Local MAC: 08:D1:F9:E1:64:B0
[12:12:56][D][wifi:481]: Starting scan...
[12:12:56][D][fingerprint_grow:348]: Setting Aura LED
[12:12:56][D][fingerprint_grow:352]: Aura LED set
[12:12:56][D][fingerprint_grow:125]: Scan and match
[12:12:56][D][fingerprint_grow:156]: Getting image 1
[12:12:56][D][fingerprint_grow:168]: Finger Misplaced
[12:12:56][D][text_sensor:064]: 'Cabane-a-velo State': Sending state 'Misplaced finger'
```

### Additional information

With the latest board I have also a continuous fingerprint read. The Grow R503 seems to detect a finger on its own.