Pigpio i2c I sure could use a complete Raspberry Pi Reg. C GPIO library and Python GPIO module and shell command utilities to control the GPIO, including SPI, I2C, and serial links. If that is successful, I will try with 3 and 4 Pi's. Each start (2) is followed by a stop (3) with an intervening write of two I2C. Be sure to have commented out this line in your /boot/config. The PWM and servo pulses are timed using the DMA and PWM c++ pigpio i2c function question. In this project I need two different I2C interfaces to run simultaneously. Using pigpio to read from ADS1115(tested) or similar IC-s via I2C - abra91/ADS1115_pigpio I agree that the 1st option would be to use i2c-1, but in case that no Pi cam and no Pi Touch screen are in use and that i2c-1 is already in use for other devices, then for special purposes (e. Another option is to bitbang it with software. Thu Oct 13, 2016 5:10 pm . pigpio pigpio Get the pigpio version getBitInBytes: Get the value of a bit pigpio is a C library for the Raspberry which allows control of the General Purpose Input Outputs (GPIO). Pi4j is a consumer of that PiGpio work. PUD_UP) # Respond to BSC slave activity e = pi. I am struggling with I2C and a flow-meter Sensirion SFM3000 connected to a Pi4B. The default hexadecimal I2C header for read access to the sensor is therefore 0x51. GPIO as you The I2C address consists of a 7-digit binary value. i2c_address: 0-0x7F The address of a device on the I2C bus. Unfortunately there is no GPIO 19 on an RPi1. Why not just use the calls directly. i2c_bus: >=0. I can also use a PCA9685 servo driver via I2C in pigpio. h at master · joan2937/pigpio Since pigpio i2c* calls rely on Pi's implementation of I2C you sill can be affected by this bug. def i2c_write(self, topic, payload): """ This method will perform an i2c write for the i2c device with the specified i2c device address, i2c register and a list of byte to write. 3. Thomas Thomas. Trying to implement some of the solutions using bsc_xfer in this forum, I simply cannot get any data back and forth to the here is the strange register map (is there no fixed spacing font available?): pi@raspberrypi:~ $ i2cdump -y 1 0x58 b 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef I am currently adding I2C slave support to my pigpio library. * Blink LEDs program #1. ALL GPIO are identified by their The class supports the PCF8574T 8-bit I2C port expander connected to a HD44780 based LCD display. To put the RPi in Slave mode I am using the Pigpio library. cpp -lpthread -lpigpio -0 main which line should I add in my CMakeFiles. – joan. error: 'I2C write failed' I did a lot of tests and seems that is impossible to send more than two bytes with the i2c_write_device function. Reboot. Shop. The conclusion appears to be to use the work by joan in pigpio for hardware based I2C slave on GPIO19+18. #include <Wire. I originally used @User_Russian's example of writing to the GPIO pins, but have found this to be far too slow for my needs and started to look at hitting the memory IO space but have come back today to see @infrantec's pigpio method. I was using Slave I2C Pins of Pi earlier:: CLOCK: BCM19/Pin35/Alt3 DATA: BCM18/Pin12/Alt3. 4) - CY8C5888LTI-LP097. While receiving data seems to work great, sending data is a problem. The actual work is done by the daemon. gpio, wiringpi etc will not work. GPIO 2 and GPIO 3 - the Raspberry Pi's I2C1 pins - allow for two-wire communication with a variety of external sensors and devices. /*----- * pgbl_01. There is not going to be a flurry or new releases I want to use the I2C slave provided by pigpio with a Raspberry Model B. i hope this a legal command. To bit bang I2C this means to control the SDA and SCL signals in software. No flags are currently defined. I do not think you can read from this ADC directly from the shell however there are python scripts available to read from the ADC. pi() # Connect to local Pi. Sat May 02, 2020 4:13 pm . These displays are commonly available in 16x2 and 20x4 character formats. Once a pigpio daemon is launched on the pi this package can connect to it and communicate with it to manipulate the GPIO pins of the pi. I know pigpio sets the level before changing the mode (behind the scenes). The master is an ATMega328PB. When the host asks for data for a given register, the request goes in to the RX FIFO and sometime later, I get notified. The communications are working very well and individual register and byte/word transmission from the master arrives on the slave with no The name or IP address of the Pi running the pigpio daemon. PIGPIO not detecting I2C device but i2cdetect -y 1 detects it and I can even run my codes well in SMBUS. cancel() pi. See bsc_i2c and bsc_xfer. 8 kΩ pull-up resistor to 3. pigpio Not allowing simultaneous waveforms on separate GPIOs. I would test if a i2c device is connected by sending byte array of [start][address][stop]. The pigpio example script is much simpler. Improve this question. Problems with I2c Sensor using pigpio. The current implementation of the PiGpio exposes the GPIO functions available on the Raspberry Pi (see Note Pi5 below). This is what I tried: For example, with servo motors or even ultrasonic sensors, I now have a working code for pigpio in C++. I wonder if the author (@joan) can be summoned by mentioning him in a comment – Dmitry Grigoryev. i2c; pigpio; bit-bang; Share. There are no repeated starts being used. ALL GPIO are identified by their Broadcom number. The fact is that i need to send a instruction to all slave in same time at one given time. py at This function selects a pair of GPIO for bit banging I2C at a specified baud rate. However, I would like to hear of any other ideas or experience in this area, specifically: hey guys, loving all the info - its been really helpful so far. I switched to pigpio bit-banging I2C implementation (set of bb_i2c* calls) and can confirm that it works more reliably than the native SMBus/I2C implementation. My device requires a time delay (2ms) between the simple byte command and the return measurement. I2C slave device I've been using the C pigpio library for a while and like it a lot (thanks joan). Background & Software Setup. Raspberry Pi Reg. By default pigpio uses the PCM peripheral leaving the PWM peripheral free for medium quality audio. EVENT_BSC, i2c) pi. This parameter should be set to zero. I am trying to use a Raspberry Pi Zero W 2 as an I2C Slave. I've been trying to to read the current CO2 concentration of the K30 sensor via I2C with a Raspberry Pi 3 B for a couple of days. If your interrupt handler tries to do an I2C operation while your mainline code is also doing one, the two will clash, especially since you have to do MSB and LSB separately. i2c_open(bus, x) if h >= 0: s = pi. JetIgniter2k2 JetIgniter2k2. I've tried using C language and library's pigpio and wiringPi. pigpio has 1) a direct hardware version (linking with libpigpio. Drimer Drimer. , different bus speed needed, multiple identical i2c dev addresses in use) i2c-0 is a good additional option nonetheless. #!/usr/bin/env python import pigpio pigpio. asked Feb 1, 2016 at 2:59. The I2C pins include a fixed 1. * Ensure that either nothing or just a LED is connected to * After trying out, I found out that there is no analogon at all between the pigpiod routines, and the low-level procedures required by the ADS1115 driver: ADS1x1x_i2c_start_write (), for instance, is expected to send a start bit and a write bit to the ADC and nothing more. Ready to unlock the full potential of your Raspberry Pi‘s GPIO pins for hardware interfacing projects? In this comprehensive, step-by-step guide, I‘ll show you exactly how to install, configure and control GPIO with the incredibly powerful pigpio library and daemon. i2c_write_device() function, however I get the following error: I2C Communication with pigpio. Hot Network Questions Should I put black garbage bags on the inside or outside of my windows to keep my house warm and cold from getting in? PSE Advent Calendar 2024 (Day 8): Look, Santa’s Baffled What is the point of a single 2. It needs the pigpio daemon to be running (sudo pigpiod). On the other hand, ADS1x1x_i2c_stop shall send a stop bit and nothing else. PiGpio Provider. 1 post • Page 1 of 1. RRooster Posts: 1 Joined: Mon Oct 10, 2016 2:44 pm. i2c I2C adapter i2c-12 i2c 107d508280. Whether you‘re just getting started with electronics and the Pi or you‘re a seasoned Linux [] The most likely solution is that the I2C device does not support the SMBus read byte command. pigpio pigpio Using the pigpio Python module you could use code such as #!/usr/bin/env python import time import pigpio PIN=4 TOGGLE=10000 pi = pigpio. From the pigpio documentation. Physically buses 0 and 1 are available Raspberry Pi Reg. bsc_i2c(I2C_SLAVE)) pi = I would use a Rpi 3B+ as I2C slave. so) that requires the program using it to run as root; and 2) a pigpiod daemon (linked with libpigpiod_if2. i2c_addr: 0-0x7F. pi() #init pigpio handle_adc = adc. 2. C GPIO library and Python GPIO module and shell command utilities to control the GPIO, including SPI, I2C, pigpio pigpio C I/F pigpiod pigpiod C I/F Python pigs piscope Misc Examples Download FAQ Site Map: The pigpio library pigpio is a library for the Raspberry which allows control of the General Purpose Input Outputs I try to learn I2C with goal : read my ESP8266 events (I2C master) from my Raspberry 3 model B v2 (I2C slave). Here is some Python which tests for devices on Pi I2C buses 0 and 1. ) Raspberry Pi 400 and 500 Raspberry Pi Pico General SDK MicroPython Other RP2040 boards AI Accelerator AI Camera - IMX500 Hailo; Software Raspberry Pi OS pigpio. Also in this link RPi Low-level peripherialsit says that any GPIO can work as I2C. Good Afternoon, I am a RPi 4 newbie and looking for a little direction working with the LTC2945 current Voltage monitor I2C interface via python. I had the following issue: Each reply to master contains the previous byte put in the FIFO. - Releases · joan2937/pigpio Fix Issue #402 Cannot handle multiple I2C devices on RPi 4B; Merge PR #415 fix simple type receieve -> receive; Merge PR #413 Update doc: return current PWM dutycycle instead of 0; i2c; pigpio; bit-bang; mpu6050; Share. Hi, I'm currently working with i2c and i'm using bscxfer for being able to use multiples slave. Hi all, I've been using the C pigpio library for a while and like it a lot (thanks joan). i2c; pigpio; Share. I would like to write 16 bits of data to an I2C bus. sleep(25) e. It's an active userspace process, which is presumably why calls using it block, so if you I'm setting up an i2c communication between a raspberry and a micro-controller but I have some troubles to link the pigpio library to my program. Hello everyone, so from the post a couple of days agoI made the TMP102 temperature sensor work, but using python. Setting up a working slave: Preparations. I'm using the pigpio library through pigpiod running on a Rpi Zero configured as a slave. Anyhow it is simplest if you just change the #define in your own copy of pigpio and rebuild. - pigpio/EXAMPLES/Python/I2C_SNIFFER/I2C_sniffer. Using 3. e. You're probably already familiar with the UART serial port, which allows you to open a login session from a serial terminal application, such as PuTTY. SDA is connected to GPIO 2 (pin 3), SCL is connected to GPIO 3 (pin 5). i2c_bus: >=0 An I2C bus number. You do need external pull-ups to 3V3 as those GPIO do not have any external pulls. Is it possible to I'm planning some tests this evening to see if I can make pigpio work between 2 RPI instead of a Pi and an Arduino. However if I run the pigpio program the same result occur. The factory setting for the I2C slave address is 0x28. But could I write som Wrappers for I2C, SPI, and serial links. 3V to supply the DS3231 Real Time Clock. You can change the default with a configuration option. If the pigpio pigs utility is installed you can use the command. I have recently been trying to use it for an I2C device. This implementation is developed/supported by a team separate of Pi4j. Digital Output (GPIO) Digital Input (GPIO) Pulse Width Modulation (PWM) ~# i2cdetect -l i2c-1 i2c Synopsys DesignWare I2C adapter I2C adapter i2c-11 i2c 107d508200. またI2CやSPIにも対応しているようなので、いつものように備忘録としてここに残します。 I found it difficult to understand what is available for using RPi as a I2C slave. To use it, you need to Unless you are using pigpio remotely you probably oughtn't to be using the pigpio I2C functions. NOTE: The GPIO used for SDA and SCL must have pull-ups to 3V3 connected. i2cdetect uses a variety of probing methods and chooses the one most likely according to the device's address. I2C - Inter Integrated Circuit. i2c I2C adapter Command line tool to immediately scan the Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Code: Select all import pigpio from time import sleep #-----# bus = 1 #i2c bus number 0 or 1 in RPi addr_w = 0x6A #i2c slave address to write addr_r = 0x6B #i2c slave address to read data_size = 2 #number of bytes to read #-----# adc = pigpio. Notifications are pipe based so this software must be run on the Pi being monitored. I2C can be supported with the help of the SMBus protocol, which is described as a specific variant of the I2C bus. I'm guessing that trying to concurrently bitbang busses like that will at best limit you to the number of processor cores. pigpio pigpio Get the pigpio version getBitInBytes: Get the value of a bit putBitInBytes: Set the value of a bit gpioTime: Get current time gpioSleep: Sleep for specified time PiGpio PWM I2C SPI Serial Digital Input Digital Output. Development Boards. The only way I saw so far is by command i2cdetect -y 1 which will list available I2C slaves. PiGpio Provider; Using Board Info; Building an I/O Instance; I/O Examples. SlySven. What might I try to debug this? note: I didn't forget to move the SDL and SCA leads to the appropriate pins. Follow edited Feb 11, 2016 at 22:12. This article is a continuation of an article named “Analog To Digital The sensor that you are using has 3 lines from the MICS6814 air quality sensor connected to the ADC which is ADS1015 and this is what is connected to the Pi over I2C. i2c_flags: 0. For reference GPIO 2/3 have 1k8 external pulls to 3V3. 0. Interfacing (DSI, CSI, I2C, etc. I know how to set the GPIO-0 and GPIO-1 to work as I2C (There is tutorials everywhere, ex: one of the tutorials how to enable I2C in raspberry). PIGPIO npm library does not I have started a review of pigpio and smb commands and found posts with fragments of info. The other two serial interfaces are the Serial Peripheral Interface (SPI) and Inter-Integrated-Circuit bus (I2C). 61 1 1 bronze badge. The second part of the I 2 C series implements a ADC with I 2 C using PIGPIO library. Many thanks in advance. It is written in C and also provides Python bindings. c * pigpio library. The I2C clock must be right, otherwise you'd get nothing at all. Follow asked Feb 5, 2017 at 16:43. Control a device connected to the Raspberry Pi's I²C bus. 3,621 1 1 gold badge 19 19 silver badges 45 45 bronze badges. pigpio library. pigpio I2C reply value. dtparam=i2c_arm=on Raspberry Pi Reg. begin(); // join i2c bus as master } char str[17]; int x = 0; void loop() { sprintf(str, "Message %7d\n", x); if (++x > 9999999) x=0; Analog To Digital Conversion (I 2 C) with PIGPIO. However every now and then the Pigpio The pigpio is an actively developed library with an impressive set of features: All GPIO pins of the Raspberry Pi can be read, written to, attached to interrupt handlers, and output PWM signals at the same time. PIGPIO npm library does not implement I 2 C, but the same author Brian Cooke (fivdi) has given us a nice package to work with I 2 C named i2c-bus. The BSC peripheral uses GPIO 18 (SDA) and 19 (SCL) in I2C mode. They are set to this mode when the Linux I2C/SMBus driver is loaded. for the second issue, i don't have much knowledge of linux i2c driver. I think 16 bytes should be sufficient if I format each message to a single-byte code (wind speed Pigpio i2c library not working properly. Considering that the data to be transferred is not in a list, I am using the pi. pigpio is a Python module for the Raspberry which talks to the pigpio daemon to allow control of the general purpose input outputs (GPIO). i2c_open(bus,add_w,0) #get i2c handle print "Handle : ",handle #print i2c handle Good evening. Sun Sep 05, 2021 1:40 pm . I am trying to write a script which will scan I2C interface and check what slaves available. Buy this time, the I2C transaction has taken place and whatever was in the I2C Hence pigpio, RPi. First of all, Thank you for making such a nice library joan. 5Gbps port on Deco XE75 Pro units when you have to connect anything else to a Raspberry Pi Reg. I sure could use a complete code example of reading registers of the pigpio is a C library for the Raspberry which allows control of the GPIO. The Raspberry Pi has three types of serial interface on the GPIO header. Raspberry Pi Raspberry Pi Pico Arduino Asus Tinker Board Orange Pi. event_callback(pigpio. They are not suitable for use as general purpose IO where a pull-up might interfere. i2c_read_byte(h) if s >= 0: print This software reads pigpio notification reports monitoring the I2C signals. import pigpio pi = None slave_addr = 0x13 def これだけで済みます。突貫工事にはもってこい 実際には事前にコンソールにてsudo pigpiodを実行しなければならない点に注意が必要。. The problem is probably synchronization. Bit banging I2C allows for certain operations which are not possible with the standard I2C driver. I am thinking of joan's PIGPIO library but I am aware there are others for the RPi, and I was wondering whether there are any that support multi-master I 2 C mode? As far as I can tell {see here} this is a software aspect rather than a hardware one in that to support that mode the master just has to look out for (and avoid) contention on the bus - i. For GPIO 2/3 (pins 3/5) to operate as the I2C bus they must be in a GPIO mode called ALT0. Commented Jan 14, 2019 at 11:41. Commented Oct 27, 2016 at 19:18. My master is controlling all the slaves to make th I have to reboot the Pi to get a normal i2cdetect command response. Interesting. There is my SLAVE python code: import time import pigpio # sudo pigpiod I2C_SLAVE=0x08 def i2c(id, tick): global pi print("i2c", id, tick, pi. This protocol is available as Linux Kernel module. h> void setup() { Wire. bsc_i2c(0) # Disable BSC Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site \$\begingroup\$ What's your actual goal here? If you are using the accelerometer to study the stepper, that's one thing, but you'd really be much better off using a quadrature encoder, either rotary or linear, or just running the steppers far I have a RaspberryPi connected to a temperature/humidity sensor via its i2c bus. Follow asked Jan 14, 2019 at 9:02. Normally everything works great, I send write commands and listen for the response. So probably, now I have double installed PIGPIO. bsc_i2c(_slave_address) # Configure BSC as I2C slave time. C GPIO library and Python GPIO module and shell command utilities to control the GPIO, including SPI, I2C, pigpio pigpio C I/F pigpiod pigpiod C I/F Python pigs piscope Misc Examples Download FAQ Site Map: The pigpio library pigpio is a library for the Raspberry which allows control of the General Purpose Input Outputs RPI 3-B, working in pyton with PIGPIO as a slave I2C device, can be read ? I'm actually using RPi as a i2c slave, master can write on it and RPi reads the buffer successfully. g. i2c baudrate If you want to use different pins, put dtoverlay=i2c-gpio,i2c_gpio_sda=<pin>,i2c_gpio_scl=<pin> instead. My device requires a time delay (2ms) between pigpio is a C library for the Raspberry which allows control of the For an I2C bus rate of 100Kbps sudo pigpiod -s 2 should work. modprobe i2c-dev and you now should have /dev/i2c-3 in addition to any others you previously configured. so) that allows user-land programs to accesss To use the Pi as an I2C slave you have to use GPIO 18 and GPIO 19. Physically buses 0 and 1 are available Problems with I2c Sensor using pigpio. Since this topic is very poorly covered and Sebastião's snippet and helped me to solve this problem I want add a complete solution on how to setup a RaspberryPi right here (tested on a RPi 3 and Zero W)!. sudo pigpiod # start the daemon if not already running pigs m 2 0 m 3 0 Raspberry Pi Reg. pigpio documentation says GPIO 18 and 19 are used for that. When you said "interrupt", that raised a red flag. I'm sure that the memory works correctly, because I use it every day with an STM32 microcontroller. I've been able to build console exes that run on a cut down dietpi. - pigpio/pigpio. I have started a review of pigpio and smb commands and found posts with fragments of info. The problem here is that for some reason the Pi is not geting the lsB right! pigpio is a C library for the Raspberry which allows control of the General Purpose Input Outputs (GPIO). pi: >=0 (as returned by pigpio_start). smbus returns good data when I use the standard I2C GPIO pins, but the pigpio bit banging I2C returns what looks like random data. . txt:. Both give errors -82 and -83 respectively. invert: 0-1 A i2c-bus - I2C serial bus access; spi-device - SPI serial bus access; mcp-spi-adc - Analog to digital conversion with the MCP3002/4/8, MCP3202/4/8 and MCP3304; pigpio-dht - Implements logic to read DHT11 or DHT22/AM2302 temperature and relative humidity sensor; pigpio-mock - A pigpio mock library for development on your local machine int i2c_open(int pi, unsigned i2c_bus, unsigned i2c_addr, unsigned i2c_flags) This returns a handle for the device at address i2c_addr on bus i2c_bus. Can anyone help/provide an explaination on this? Much appriciated. Call set_mode_i2c first to establish the pins for i2c operation. if I run a test program with the following command, everything works. pi() for bus in range(2): for x in range(0x08, 0x79): h = pi. How much data per message and how often between Arduino and Pi? The input (slave I2C) FIFOs on the Pi are limited to 16 bytes. Below is my code to set up the slave address on the Pi. ラズベリーパイ(Raspberry Pi / Raspberry Pi Zero) のGPIO、I2C、SPIをPythonで制御する方法をまとめる。PythonのライブラリにはGPIO()、I2C()、SPI()等あるが、それぞれ使い分けが必要となる。本記事では、GPIO、I2C、SPI全てが一つにまとまっているpigpioで制御する。 int i2c_open(int pi, unsigned i2c_bus, unsigned i2c_addr, unsigned i2c_flags) This returns a handle for the device at address i2c_addr on bus i2c_bus. 3v. Using Python command line and pigpio bb_i2c_zip() I can read the correct expected value, but is it here at all possible to use Xojo with pigpio-GPIO? I tried i2c_write_device() and i2c_read_device(). i2c . I use the Arduino Wire library on the ESP and python pigpio lib on the Raspberry. Hot Network Questions How would an ability that changes immunity to resistance work with damage absorption? Girls and boys parades Precison of InterpolatingFunction decreases to MachinePrecision in ParallelTable pigpio is a C library for the Raspberry which allows control of the General Purpose Input Outputs (GPIO). Free Shipping Over £35 +44 (0) 1929 421070. Generally to bit bang you need to set the GPIO high (write 1) or low (write 0). g++ main. The read me mentioned some other Pins: All the tests make extensive use of gpio 25 (pin 22). C GPIO library and Python GPIO module and shell command utilities to control the GPIO, including SPI, I2C, pigpio pigpio C I/F pigpiod pigpiod C I/F Python pigs piscope Misc Examples Download FAQ Site Map: The pigpio library pigpio is a library for the Raspberry which allows control of the General Purpose Input Outputs Analog To Digital Conversion (I 2 C) with PIGPIO. One benefit of working this way is that you can remotely access the pi over a network and multiple instances can be connected to pigpio is a library to provide a simplified interface to the Raspberry Pi's hardware devices, like SPI, I2C, Serial, and GPIO. These are exposed on B+ RPi's. Where am I I am using the Raspberry PI for one of my projects. They are mainly just a wrapper around the underlying I2C/SMBus calls. Failing to read I2C data on LPG10 flow sensor using Python. The Broadcom hardware has extra pins for I2C slave. Basically Learn how to programming with I2C on the Raspberry Pi with Python and the SMBus library. On the Pi I am testing using a modified version of the python script provided in the documentation: bsc_i2c. Fri Dec 24, 2021 7:44 pm . i2c_flags: 0 No I2C flags are currently defined. Go to the official Github repository and build An example implementation of a PIGPIO BSC slave I2C slave functionality on the Raspberry Pi/ - christhechris/RASPPI_I2C_SLAVE B4J邊寫pigpio socket元件,邊用元件測試控制BreadPi(GPIO), DI-16L(I2C)卡片的效果👏👏👏B4J writes pigpio socket components, and uses components to test the effect of controlling はじめに. watching out for a Hello everybody, I am coding a project, where multiple Raspberry Pies should communicate with each other, there is one Master an two slaves. (SCL, pigpio. The scripts and the results mostly speak for themselves. If I can get DC motors working now, I will get a little closer to my goal of building robots. exceptions = False # handle errors pi = pigpio. o baud rates as low as 50 o repeated starts o clock stretching o I2C on any pair of spare GPIO. Also, UART, I2C and SPI protocols are implemented. txt to make it work? I'm trying to set up a Pi Zero as I2C slave via the pigpio library. I'm trying to set up a RPi 4B to work as an I2C slave with PSoC (4. You can do the same with RPi. The address is always followed by a write bit (0) or read bit (1). Using I2C with MMC34160PJ magnetometer. For C use gpioCfgClock, for the pigpio daemon use the -t Code examples I2C Read/write to ltc2945 Pigpio/ SMB. You can also change the rate with i2c_gpio_delay_us=<usecs>. 1. rwkaraw vaxlnen gwyuoy lsahtm fhir pimho xejdw gbcn wmemg ibk