This mode enables communication over the I2C bus using standard SDA/SCL lines.
It supports device scanning, pinging, register reads/writes, sniffing, and manual instruction sequences.

• scan attempts to detect devices by sending start/stop frames across all valid addresses.
• ping is a simpler check for a specific address (e.g., ping 0x3C) and confirms presence with an ACK.
• read performs a read on the given address and register.
• write performs a write to the specified device address and register.
• sniff see https://github.com/WhitehawkTailor/I2C-sniffer/ for more details
• The instruction syntax ([0x13 0x4B r:1]) supports direct control over I2C sequences:
  • Select address
  • Select the register
  • Read specific number of bytes (r:N)
• The config command allows setting:
  • SDA and SCL pins
  • Frequency (standard mode 100kHz, fast 400kHz, etc.)

mode i2c
config                        # Set pins and frequency
scan                          # Detect connected devices
sniff                         # Monitor I2C transactions passively
ping 0x3C                     # Check ACK at address 0x3C
read 0x3C 0x00                # Read register 0x00 from device 0x3C
write 0x3C 0x01 0xFF          # Write 0xFF to register 0x01
write 0x3C 0x01 50            # Write 50 to register 0x01
[0x3C 0x00 r:4]               # Address 0x3C, register 0x00 and read 4 bytes from there