I2C Address Converter Module SKU: CQRADDR001 - Revision history

Chenqi: /* Raspberry Pi Example and Test Code */

2026-01-29T04:23:43Z

‎Raspberry Pi Example and Test Code

2026-01-29T04:19:54Z

‎Raspberry Pi Example and Test Code

2026-01-29T04:13:54Z

‎Raspberry Pi Example and Test Code

2026-01-29T04:06:27Z

‎Raspberry Pi Example and Test Code

2026-01-29T04:02:34Z

‎Raspberry Pi Example and Test Code

2026-01-29T04:01:11Z

‎Raspberry Pi Example and Test Code

2026-01-29T03:58:56Z

‎Raspberry Pi Example and Test Code

2026-01-29T03:57:09Z

‎Sample Code

2026-01-29T03:56:59Z

‎Arduino Example and Test Code

2026-01-29T03:34:12Z

‎Arduino Example and Test Code

← Older revision		Revision as of 04:23, 29 January 2026
Line 197:		Line 197:

	After toggling the DIP switch to change the address, power on again.		After toggling the DIP switch to change the address, power on again.
		+	----
		+	=='''Sensor Does Not Work Properly'''==
		+
		+	'''Answer:'''
		+
		+	*Ensure the sensor wiring is correctly connected to the development board;
		+
		+	*Verify that the board program is properly burned.
		+
	----		----

← Older revision		Revision as of 04:19, 29 January 2026
Line 151:		Line 151:
	Go to the folder created in the terminal, use GCC cross-compilation and run the file.		Go to the folder created in the terminal, use GCC cross-compilation and run the file.

		+	*'''Sample Code:'''
		+
		+	<pre>
		+	include <stdio.h>
		+	#include <stdlib.h>
		+	#include <unistd.h>
		+	#include <fcntl.h>
		+	#include <sys/ioctl.h>
		+	#include <linux/i2c-dev.h>
		+	int main() {
		+	int file;
		+	char filename[20];
		+
		+	printf("Scan available I2C devices...\n\n");
		+
		+	snprintf(filename, 19, "/dev/i2c-1");
		+	file = open(filename, O_RDWR);
		+	if (file < 0) {
		+	printf("Error: Unable to open I2C bus\n");
		+	return 1;
		+	}
		+
		+	printf("The discovered I2C device address:\n");
		+
		+	for (int addr = 0x03; addr <= 0x77; addr++) {
		+	if (ioctl(file, I2C_SLAVE, addr) >= 0) {
		+	unsigned char buffer[1];
		+	if (read(file, buffer, 1) == 1) {
		+	printf("0x%02X\n", addr);
		+	}
		+	}
		+	}
		+
		+	close(file);
		+	printf("\nScan completed\n");
		+	return 0;}
		+	</pre>
		+
		+
		+	*'''Test Results:'''
		+
		+
		+	[[File:CQRADDR001-85.jpg\|700px]]
		+
		+
		+	After toggling the DIP switch to change the address, power on again.
	----		----

← Older revision		Revision as of 04:13, 29 January 2026
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	[[File:CQRADDR001-81.jpg\|700px]]		[[File:CQRADDR001-81.jpg\|700px]]
		+
		+	[[File:CQRADDR001-82.jpg\|700px]]
		+
		+	Create a folder and a “.c” file, then write the code.
		+
		+	[[Media: I2C.rar]]
		+
		+	You can directly add to the compressed file.
		+
		+	[[File:CQRADDR001-83.jpg\|700px]]
		+
		+	gcc -Wall -g -o I2C I2C.c -lm
		+
		+	./I2C
		+
		+	Go to the folder created in the terminal, use GCC cross-compilation and run the file.
		+
	----		----

@@ Line 125: / Line 125: @@
 '''First, visit the Raspberry Pi official website to download the system. You must select the download option in the frame below; otherwise, the sensor will not function properly.'''
-Download link: https://www.raspberrypi.com/software/operating-systems/#raspberry-pi-os-legacy-64-bit
+*Download link: https://www.raspberrypi.com/software/operating-systems/#raspberry-pi-os-legacy-64-bit
 [[File:CQRADDR001-791.jpg|700px]]
 ----

@@ Line 127: / Line 127: @@
 Download link: https://www.raspberrypi.com/software/operating-systems/#raspberry-pi-os-legacy-64-bit
-[[File:CQRADDR001-79.jpg|700px]]
+[[File:CQRADDR001-791.jpg|700px]]
 ----

← Older revision		Revision as of 04:01, 29 January 2026
Line 126:		Line 126:

	Download link: https://www.raspberrypi.com/software/operating-systems/#raspberry-pi-os-legacy-64-bit		Download link: https://www.raspberrypi.com/software/operating-systems/#raspberry-pi-os-legacy-64-bit
		+
		+	[[File:CQRADDR001-79.jpg\|700px]]
	----		----

← Older revision		Revision as of 03:58, 29 January 2026
Line 123:		Line 123:
	=='''Raspberry Pi Example and Test Code'''==		=='''Raspberry Pi Example and Test Code'''==

		+	'''First, visit the Raspberry Pi official website to download the system. You must select the download option in the frame below; otherwise, the sensor will not function properly.'''

		+	Download link: https://www.raspberrypi.com/software/operating-systems/#raspberry-pi-os-legacy-64-bit
	----		----

@@ Line 119: / Line 119: @@
 Set the serial port to 9600. Open the serial port debugger to view the bidirectional I2C address. After toggling the DIP switch to change the address, power on again. The new address will appear in the serial port debugger.
 ----
 =='''Sample Code'''==

@@ Line 84: / Line 84: @@
 *'''Sample Code:'''
 <pre>
@@ Line 109: / Line 110: @@
+}
 </pre>
 *'''Test Results:'''
 [[File:CQRADDR001-78.jpg|700px]]
 Set the serial port to 9600. Open the serial port debugger to view the bidirectional I2C address. After toggling the DIP switch to change the address, power on again. The new address will appear in the serial port debugger.