[   103][I][esp32-hal-i2c.c:75] i2cInit(): Initialising I2C Mast

=== ESP32-S3 Rain Barrel System Starting ===

Core: 1, Freq: 240 MHz
Debug level: 5
I2C internal pull-ups enabled on SDA=15 SCL=7
Pin 4 set to HIGH
I2C scan on SDA=15, SCL=7
I2C scan complete: no devices found

Using PCF8574 at 0x21
Failed to write PCF8574 at 0x21, I2C error 2
Pin 17 set to LOW
[  5565][V][esp32-hal-uart.c:416] uartBegin(): UART2 not installed. Starting installation

[  5573][V][esp32-hal-uart.c:467] uartBegin(): UART2 initialization done.

MODBUS RS485 initialized: RXD=pin5, TXD=pin6, Baud=9600
Sending init command (FC06 Write Single Register)...

Init Response: C0 (total: 1 bytes)
MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
Setup complete


[  6380][W][Wire.cpp:301] begin(): Bus already started in Master Mode.

[  7475][E][Wire.cpp:513] requestFrom(): i2cRead returned Error 263

[  7541][E][Wire.cpp:513] requestFrom(): i2cRead returned Error -1

LCD init failed, status=-1
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED


MODBUS TX: 01 03 00 04 00 01 C5 CB (CRC)
MODBUS RX: 01 03 02 00 03 F8 45 (total: 7 bytes)
Data Value:     0x0003 (3)
Received CRC:   0x45F8
Calculated CRC: 0x45F8
CRC Check: PASSED