Bq25601 and bq25601d pwr877 evaluation module user s guide. How can i read the hcsr04 distance or command the connected servo. Note, the cathode of the led is the short lead which connects to ground. Cheap i2c oled display with 08m2 page 2 picaxe forum. By running the appropriate pc software for the corresponging fuel gauge ic, the ev2300 interface board allows the user to evaluate the battery fuel gauge circuit. And theres additional plugins apart from just basic lowlevel functionality to assist you in the process of integration. The software incorporates generalpurpose, as well as specific device specific user interfaces, allowing you to communicate with i2c and spi devices. Tis ev2300 software download help users get up and running faster, reducing time to market. Resolved bq77pl900 i2c to arduino power management forum. In addition to this board, pc software is required to interpret.
For experimentation, adafruit has a tca9548a board. In addition to this board, pc software is required to interpret the gas gauge data. The arduino is the slave, and it has to send the master the value of the command asked. Introduction to battery management studio bqstudio. In the evm software, specify device i2c address as d6 for bq25601 or bq25601d.
Hi, does anyone here have labview vis for ti ev2300. Smbus communication between gas gauge sw using ev2300. Is there some way i can see if the evaluation board. Some one using ti ev2300 to programhack a battery back ti ev2300 is a tool to program bq series battery gauge. Hope someone would like to share any vi related to ti ev2300. A tact switch input is connected to gp7, whereas gp0 through gp6 are defined as outputs and drive ag segments of a 7segment led. Is there some way i can see if the evaluation board has booted.
Examples of nonstatic data include serial number, date, and calibration. Doubleclick the battery eeprom works installer icon. An ev2300 controller driver for direct access to the device. Pricing and availability on millions of electronic components from digikey. I can already address the card through the i2c, but im having trouble with the rest of the communication. Texas instruments ev2300 development kits and tools.
Using i2c for smbus device communications libraries. In this loop, all other interrupt services are enabled. In the evm software, specify device i2c address as d6 for bq258926, and d4 for bq258905. The ev2300 isnt a programming device in its own right its just an adapter that lets the pc talk to i2c smbushdq gas gauges. It utilises the pinmode, digitalwrite and digitalread functions. You can set each of 8 pins to be input, output, or input with a pullup. Convert from 4 pin jst female plug to 4 pin molex connector connect 4 pin female jst plug with 4 pin male jst socket on pcb board. This is how to output with the chip first the ddr is 0 and 0 output, 1 input wire.
Connect the ev2300 2400 usb interface board to the computer with a usb cable and from the i2c port to j8 with the 4pin cable. Youll need software to make use of the adapter currently, bqstudio is the only currentlysupported software but gaugestudio and bqevsw may be used for certain older gauges. Jul 10, 2019 arduino library for the mcp23008 and 9 i2c io expander adafruitadafruitmcp23008library. So what you were doing was an hi2csetup to talk to the oled, an hi2csetup via i2cslave to read the data, but not doing another hi2csetup before talking to the oled again anything sent to the oled ended up being sent to the sensor selected by the last hi2csetup, not the actual oled. Ev2300 evm interface board this users guide describes the function and operation of the ev2300 evaluation module. Check for example the offerings of nxp, ti and maxim. For example, you can set some afe registers via dataflash 1st level safety, followed by. And this is during production for our flash gauges. After installing the software both versions gpio and ev2300 are available. You can set each of 8 pins to be input, output, or input with a.
To request the contents of a particular register, the nxt would send the slaves address, followed by. The raspberry pi has one i2c bus and the mcp23008mcp23017s have a 3bit address select port, so intheory you can connect up 8 mcp23008mcp23017s giving you a gpio capability of an additional 128 io pins. These modules connect via i2c, so you have have to run. The i2cslave command is an older, deprecated, equivalent of hi2csetup i2cmaster. Select disabled for the watchdog timer select force vindpm. Im considering to get my a1185 out of permanent failure using ev2300. Run the file ev2300 exe 4 bq76940bq76930bq76920 software this section describes how to.
When the software installation is complete click finish to exit the software installation all bqmtester software is now installed on the pc. How easy it is to use, how it works and when to use it the i2c protocol is used in a huge range of chips just a few examples from this site include the ds7 rtc, ssd6 oled display, mcp23017 serial expander. Dec 02, 2016 you can reproduce that with the advanced comm plugin. Mcp2221 i2c demo board adm00678 the mcp2221 i2c demonstration board allows the user to communicate through a pc application to i2c slave devices by using the mcp2221 device as usbto i2c master converter bridge.
Resolved bq77pl900 i2c to arduino power management. The pcf8574 chip is used in the i2c module on the back of the lcd. The protocol allows you to connect many devices to a single set of two wires, and then. Ev2300 evaluation module interface board users guide rev. The ev2400 is recommended, the ev2300 works if it is available and drivers are installed. Connect one voltage meter across tp5 bat and tp7 gnd to measure the battery voltage. For example, if 8 cells are used, the 10p, 9p and 8p. Bms with smbus,i2chdq communication protocol,battery bms. Currently the i2c drivers on the raspberry pi lack some features. While this library is sufficient most of the time, there are situations when it cannot be used.
This is a simple program to read a byte from an i2c client under linux. Complete interface between usb and smbus, i2c, and hdq 816 interfaces using a simple api. Softwire is a software i2c implementation for arduino and other wiringtype environments. If you have 8 target chips with identical addresses, select an 8toone mux. This project is to use the mcp23008 8bit io expander with i2c interface on the raspberry pi. In this i2c tutorial you will learn all about the 2 wire i2c serial protocol. So you can update the firmware, for example the programming firmware commands. The number of pins is known by the expansion module and its 16 for the mcp12017 and 8 for the mcp23008.
Each key is checked sequentially in a software loop. Here is an example reading the adc chip using python on a raspberry pi. Feb 23, 2017 i got a very cheap i2c display ev2300 evaluation module interface board with 14. Software description and features provided along with supporting. The mcp23008 uses two i2c pins these can be shared with other i2c devices, and in exchange gives you 8 general purpose pins. Using i2c for smbus device communications libraries particle.
Connect the ev23002400 usb interface board to the computer with a usb cable and from the i2c port to j8 with the 4pin cable. With this i2c interface module, you can free up the ports allowing you connect more devices you will be able to transfer data using only 2 wires if you already own a display and are in the need of more arduino resources, you must have this. The ev2300 is a usbbased interface board for a pc that can be used to evaluate battery fuel gauge circuits designed with texas instruments ics. To request the contents of a particular register, the nxt would send the slaves address, followed by the register address. Jul 23, 2014 cannot access i2c twi on ov7670 cmos sensor solved jul 23, 2014, 12. Operation manual of smart battery systems sbs with smbus v1. Another great iic i2c twispi serial interface the resources on the arduino board is limited. Two efm32 i2c modules are connected and set up to both transmit master mode and receive data between each other slave mode using a common i2c bus. Poking around with a scope, we can see activity on pins 3 and 4. I2ctools provides i2c host controllers and software for connecting your pc to i2c bus and spi devices. In the evm gui software see example screen shot below, make the following changes as necessary.
Some one using ti ev2300 to programhack a battery back. The i2c standard doesnt really define these, but think of them as memory addr esses which can be accessed directly through i2c. The pins to be used for the serial data sda and serial clock scl control lines can be defined at runtime. Pic12f683 does not have hardware i2c module and therefore, the i2c communication with mcp23008 is realized through software using generalpurpose io pins gp0 for scl and gp1 for sda. Expanding the number of io lines using microchip mcp23008. Usb interface hooks into the i2c bus on your system. Complete interface between usb and smbus, i2c, and hdq 816 inter faces using a. In order to interface with a pc via usb to the bq25895evm664 then an ev2300 ev2400 is mandatory. The ev2300 has connections on it for a usb cable and also accepts inputs from a battery fuel gauge circuits communication port smbus or hdq. I think i have a communication problem, int the start or stop bit maybe. I think im missing a link for the different commands. I dont expect to need it in normal use, and currently plan to use an ev2300 for calibration. And then you use our software in a pc to program these flash stream files to the. I do not know where this differs from standard i2c and if the standard i2c library for arduino will need modification to work.
For more information, you can check out the datasheets below. Jan 17, 2017 hey i got datasheet with registers can you create an example code how to read and write those registers. To communicate with pc, you must order this interface hardware, ev2300 from texas instrument. This bms is designed for 3s 96s battery packs, can be used on liion, lipolymer, lifepo4, with max. Pricing and availability on millions of electronic components from digikey electronics. With the ev2300 interface board and software, the user can read the. The standard i2c library for the arduino is the wire library. In this sw, in pro window, i intended to read values from the arduino, with read, smb command. The bq76940bq76930bq76920 software supports the bq76920 afe i2c communication. An intel pentium processor or equivalent, 100 mhz or faster. Theres even the ability to get an interrupt via an external pin when any of the inputs change so you dont have to keep polling the chip.
The controller firmware is stored in flash memory and is executed by the core at powerupafter the boot rom code verifies the integrity words. And pin 3 definitely looks like an i2c clock, pulsing nonstop during the comm intervals, while pin 4 looks like an i2c data. Using the starter kitc wire up the breadboard as shown. In the evm gui software see example screen shot below, make the following changes as. Battery eeprom works view topic using ev2300 with be2works. Mcp2221 i2c demo board adm00678 the mcp2221 i2c demonstration board allows the user to communicate through a pc application to i2c slave devices by using the mcp2221 device as usbtoi2c master converter bridge. The following hardware and software is required to run battery eeprom works.
I am currently working on a time sensitive project and it will be helpful if someone will share any vi related to the ev2300 to cut some chase. I ordered the ti ev2400 so i can iterface the ti chips using their software. Using mcp23008 8bit i2c io expander on the raspberry pi sk. It reads the 10 adc channels at 8bit 10 bytes returned, then at 10bit 20 bytes returned, and prints the results. The ev2300 drivers now have to be associated with the usb ports that will be used with bqmtester software as described in the following section. We have ti programming tools, either smart flash or bqstudio. The texas instruments ev2400 evm interface board ev2400 evm interface board enables an ibmcompatible or other type pc with the required driver for its particular platform to communicate with the texas instruments smbus, i 2 c, hdq, or dq interface gas gauges via a universal serial bus usb port.
Aug 07, 2012 the ev2300 has connections on it for a usb cable and also accepts inputs from a battery fuel gauge circuits communication port smbus or hdq. Smd iici2ctwi serial interface board module port for. Evaluation and programming i2c interface signals are provided on j12 and are described in table 4. Ev2300 usbbased pc interface board for battery fuel gas. Using mcp23008 8bit i2c io expander on the raspberry pi. In the evm gui software field view see the following example screen shot, make the following changes as necessary.
Select disabled for the watchdog timer set input voltage limit to 4. Use the communication examples together with the datasheet and you will hit another milestone. By running the appropriate pc software for the corresponding fuel gauge ic, the ev2300 interface board allows the user to evaluate the battery fuel gauge circuit. It assumes the i2c client does not have a driver bound to it. Several manufacturers offer i2c bus multiplex and switch ics. I assume that any i2c compatible mcu with an i2c master capability and correct io levels can interface to the bq25895evm664. It also has the ability to edit, save, and program serial eeprom and flash memory devices. Cannot access i2ctwi on ov7670 cmos sensor solved jul 23, 2014, 12.
The board can also work at the same time as a usbtors232 uart bridge. To make life easier just source the ti ev2300 or ev2400 adapter somehow. Smbus communication between gas gauge sw using ev2300 and. Surprisingly, the bq responds with the expected temperature value. Arduino library for the mcp23008 and 9 i2c io expander adafruitadafruitmcp23008library. This guide includes a complete description of the ev2300 evm, as well as a bill of materials, and schematic.
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