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I2C
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  • Forum Post: Re: Re:EEPROM programming through I2C with lm3s6965

    Bharatesh
    Hi, Need Help, unable to write eeprom, trying to write 8 bytes(page) and read them back. Configuration: lm3s8962, Atmel 24c02. Slave addresses tried 0x50, A0, In I2CIntHandler the control jumps to ending brace after if(g_ulCount == 1) { g_ulState = STATE_WRITE_FINAL; }
    on Jun 18, 2010

  • Forum Post: need help with I2C on LM3S3748

    Jay Wong
    Hello All: I need help with I2C. I saw numerous post on the same subject, noted all relevant program statements and I am still not getting it to work. Basically, I am setting up the 3748 as the master and trying to use it to set a RTC. Below is the core of my program: *************************...
    on Jul 28, 2010

  • Forum Post: Re: Re:EEPROM programming through I2C with lm3s6965

    HASAN ERKAN54452
    Hi In the project 24c1024 is used.These code was written for 24c08 by texas. source code is part of revision 5961 of the DK-LM3S102 Firmware Package. The difference is the size of the eeprom.So the bigger size needs 2 adrress byte. A write operation requires two 8-bit data word addresses following...
    on Aug 3, 2010

  • Forum Post: StellarisWare\boards\dk-lm3s102\i2c_atmel\i2c_atmel.c

    Jon Peterson
    It looks to me that this code will not work if AtmelRead is given a length count of two. STATE_READ_FIRST will go to STATE_READ_NEXT which will decrement the count by one. Since it checks the count for 2, which it is not, it will stay in STATE_READ_NEXT and never do STATE_READ_FINAL nor ever set the...
    on Aug 17, 2010

  • Forum Post: Re: LM3S9B96 I2C interface to TCA/PCA9535

    Andy Neil
    http://e2e.ti.com/support/microcontrollers/stellaris_arm_cortex-m3_microcontroller/f/471/t/60752.aspx
    on Aug 22, 2010

  • Forum Post: Re: More I2C problems - Master lock-up caused by external interference

    Martin Honeywill
    Hi Gary, Thanks for your input and suggestions regarding snubbing. We do indeed supress contacts when needed and use flywheel diodes on relay coils. The board where I can easily repeat the I2C lockup is a prototype board where the I2C lines were tracked close to the relays (Not ideal). What we seem...
    on Nov 2, 2010

  • Forum Post: Re: I2C SDA-pin Hardware Latch-Up

    Martin Honeywill
    Hi David, I thought that with my latchup problem, which is why I added a recovery routine which takes the GPIO pins out of I2C mode then clocks the SCL line to release the SDA line. This has fixed some latchups which are caused by this (Pity the SMBUS version of I2C will not allow this condition to...
    on Nov 2, 2010

  • Forum Post: Re: Interfacing I2C Compass with LM3s811

    Andy Neil
    cb1 Stellaris MCU employs a 7 bit I2C address Actually, I2C itself has a 7-bit address, and this is sent in an 8-bit field where the LSB is a read/write bit. There does seem to be some inconsistency among manufacturers when quoting their I2C addresses - some give the 7-bit number, but some give...
    on Nov 27, 2010

  • Forum Post: Interfacing I2C Compass with LM3s811

    Cruz Monrreal II
    Hello. I've been having trouble interfacing the HMC6352 ( http://www.sparkfun.com/products/7915 ) with the LM3s811 chip. I have looked extensively through the sample code in StellarisWare/examples/peripherals/i2c/ as well as the actual i2c.c file itself. I have verified that the pins that I am...
    on Nov 26, 2010

  • Forum Post: I2C between Stellaris controllers: I2CSlaveInit causes master to stop transmitting

    David R.
    Hi All- I'm working with a pair of LM3S8938 controllers. I2C0 on one is configured as a master, and I2C0 on the other is configured as a slave, with matching addresses (0x33). The goal is to transfer data between the two identical controllers. I am working with 2 development PCs, 2 independent...
    on Dec 28, 2010

  • Forum Post: Working Example: I2C

    cee
    What's happening forum? I recently developed an application for testing the periphery of my custom board. Therefore i had to get some of the LM3S9B90 features working. Some parts of my code are dependant on my board. But most of it, init functions and stuff, should work on any board with LM3S9B90...
    on Jul 13, 2010

  • Forum Post: I2C Communication doesn't work ?

    Chandra Davouloury
    Hello, I am new in Cortex M3 programming and I have a problem with my I2C protocol. I'm currently working on the board Stellaris EKS-LM3S9B92. I have successfully installed the pull-up resistors (10 kohms) for 3,3v power supply. This is my code : #include "stdio.h" #include...
    on Feb 6, 2011

  • Forum Post: Unable to get Ack on I2C Address Tx

    Randy Williams
    Hello, I have a DK-LM3S(B96 and have successfully used most of the peripherals except the I2C. I believe I have set up the ports and pins correctly but have attached the code and shot from the LA. The peripheral address is 0x69 and the uC is set to write on the I2C. So the bits are correct, however...
    on Jan 27, 2011

  • Forum Post: 24C64 Interface with LM3S9B96

    Tushar Kulkarni
    Hi, I am using AT24C64 EEPROM interface with I2C1 to LM3S9B96. I am having problem with software, the sequence of communication is not able to perform. http://www.atmel.com/dyn/resources/prod_documents/doc0336.pdf Please guide me how to achieve communication sequence?
    on Feb 22, 2011

  • Forum Post: Re: reading and writing to EEPROM through I2C

    Andy Neil
    ramkrishna naik I have read the following commands What "following commands" ? ramkrishna naik but thats not clear What, exactly, is not clear? ramkrishna naik Can anybody tell me the procedure to read and write the data bytes to the EEPROM If we don't know what was "unclear"...
    on Mar 1, 2011

  • Forum Post: Re: reading and writing to EEPROM through I2C

    Andy Neil
    http://e2e.ti.com/search/CustomSearchResults.aspx?q=EEPROM%20I2C&m=a&g=185
    on Mar 1, 2011

  • Forum Post: I2C bootloader (master side)

    John W64081
    Does anyone know of any examples for the I2C master side of the bootloader. All of the examples that I have are for code that runs on the Stellaris. Are there code examples showing the best way to implement the required command sequence from the master.
    on Mar 30, 2011

  • Forum Post: How can I use i2c driver library to communicate with at24c02?

    jian gong61581
    Dear : I am confused with i2c driver library . My i2c device address is 1-0-0-1-A2-A1-A0-R/W ,A2,A1,A0 all are zeros.That is: 1-0-0-1-0-0-0-R/W. If I want to write and read eight bytes data to at24c02 at the start address of 0x10. How can I use LM3S i2c driver library? Also,if I want to write and...
    on Apr 19, 2011

  • Forum Post: Re: Re:EEPROM programming through I2C with lm3s6965

    Hasan_ERKAN_TURKEY
    Hi Ancs, There is nothing wrong in your code about writing a byte to an adress of eeprom. But what about reading? Are you sure reading operation is true? Also your i2c device adress is 0x52. So you should make connection adress pins with Vcc. Is that right?
    on Apr 21, 2011

  • Forum Post: Interfacing I2C DAC with LM3S8962 and LM3S2110

    Razik Ahmed
    I am trying to interface a I2C DAC (MAX519 http://datasheets.maxim-ic.com/en/ds/MAX517-MAX519.pdf) with the LM3S2110. My project will involve the LM3S8962 and the LM3S2110 communicating with each other through CAN. I want to use the LM3S2110 to read music from an SD card and output it to speakers using...
    on May 2, 2011

  • Forum Post: LM3S811 I2C output.

    Chiu Hao Chen (Ted)
    i am trying to output some signal using the i2c and monitor it under a scope. I use the example code peripherals for the i2c and so far still got nothing outputted. I have a pull up resistor in place for the i2c. Anyone got any suggestions? Also for some reason, the Hyper-terminal is displaying gibberish...
    on Apr 25, 2011

  • Forum Post: Re: I2C With LM3S3748 and ROM libraries

    Austin Miller
    Guillermo, Are you developing this application on a custom PCB or on a TI Stellaris EK-LM3S3748? The reason I ask this questions is because the EK-LM3S3748 has a 8MHz crystal and in your clock configuration above you have a 6MHz crystal specified. Best regards, Austin Miller
    on May 26, 2011

  • Forum Post: I2C Driver not working in Slave mode for LM3S9B96

    Ayaz Shahid
    Hi, I'm trying to use I2C0 for LM3S9B96 in slave mode but I cant seem to get any interrupts for data (read or write). My use case is such which would allow I2C0 to either be used as a Master to send/receive data or a slave which would serve Master's read/write request. I was able...
    on May 25, 2011

  • Forum Post: I2C With LM3S3748 and ROM libraries

    Guillermo Carrera
    Hi, I have some questions about how works the I2C module on the LM3S3748. I have some examples about that and i made a code that it suppoused would have to operate fine, but it doesn´t work. Here is my code: --------------------------------------------------------------------------...
    on May 26, 2011

  • Forum Post: Re: Creating a Repeat Start sequence on I2C Bus

    Gary Brown
    Doesn't look like you can do this with Stellarisware. However it can be done with a few peeks and pokes to the controller and some help from my local FAE (Joe George) . The controller can be coaxed into doing the right thing w/o a lot of low level programming. The resulting sequence would be as...
    on Jun 3, 2011
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