add utilities for led and gpio dump and detection

tools/led_gpio_utils/i2c_dump_rtl_regs.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+
+import time
+import argparse
+from smbus2 import SMBus, i2c_msg
+
+# Configuration
+DEFAULT_I2C_BUS = 1
+DEVICE_ADDR = 0x5C  # Replace with your device address
+NUM_BYTES = 16       # Bytes to read
+
+# Parse command line arguments
+parser = argparse.ArgumentParser(description='Dump RTL registers via I2C')
+parser.add_argument('-b', '--bus', type=int, default=DEFAULT_I2C_BUS,
+                   help='I2C bus number (default: {})'.format(DEFAULT_I2C_BUS))
+args = parser.parse_args()
+
+I2C_BUS = args.bus
+
+# Open I2C bus
+with SMBus(I2C_BUS) as bus:
+
+	for addr in range (0, 65536, NUM_BYTES):
+		# Create write message (send register address)
+		write = i2c_msg.write(DEVICE_ADDR, [addr>>8, addr & 0xff])
+	
+		# Create read message (read 2 bytes)
+		read = i2c_msg.read(DEVICE_ADDR, NUM_BYTES)
+	
+		# Perform combined transaction
+		bus.i2c_rdwr(write, read)
+	
+		new_data = list(read)
+
+		# Convert read message to string
+		datastr = " ".join([ f"{x:02x}" for x in new_data])
+		print(f"{addr:04x}: {datastr}")