Low Power RF & Wireless Connectivity

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Low Power RF & Wireless Connectivity

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  • Forum Post: Using the CC2540/41 Bluetooth stack with Keil

    Bobby44348
    Hi, I'd like to use Keil to program my CC2540/41 (I'm using both). Using Keil I can get the 8051 bit of the CC2540 to blink a LED on the USB dongle of the CC2540Mini-DK. I'd like to use the Bluetooth stack as well. Is this possible? I see that the BLE stack is provided as a blob for IAR...
    on Jun 26, 2012

  • Forum Post: CC2540/CC2541 instruction set, registers, memory map and other details

    Daniel Wingerd
    i'm looking for information regarding the 2540 and 2541 internal operations. i know they use a 8051 CPU but is it stock or modified? also, is there a memory map somewhere and information on any registers the mapped devices may have? i cant afford the IAR compiler but would like to use the BLE component...
    on Jun 21, 2012

  • Forum Post: Power mode 3

    Raoul Erbetta
    How can I do to use power mode 3 with an external interrupt.? I don't know how do the schematic
    on Jul 3, 2012

  • Forum Post: too much delay when using loop

    alps alpslegion
    I am trying to read an attribute value from cc2540, but when i am using loop statement in the read callback function, like: for(i=0;i<NUMBER;i++) { ................ } it takes so much time to get the attribute value from the central device, (15~20 seconds). When i don't use the loop...
    on Jul 11, 2012

  • Forum Post: Powering the CC2541 for use with the CC debugger

    Sahil Shah
    Hi all, I've poured over there forums, been through the documentation back and forth, updated the debugger firmware, and have made sure everything is connected properly countless times. However, I still cannot get the CC debugger to recognize the Bluetooth chip (still shows the static red light...
    on Sep 18, 2012

  • Forum Post: Instructions in C for CC2540

    Zodryn
    I'm trying to interface a CC2540 to an accelerometer (on a custom PCB), and I need some help. I've looked at the data sheet for the accelerometer, and I know the code I need to send it to get it in the right mode (wake up mode). I don't know how to send data from the CC2540 to the accelerometer...
    on Oct 8, 2012

  • Forum Post: How can I make USB CDC library work with POWER_SAVING option?

    Anthony Ambuehl1
    I am working on a battery powered application with BTLE and USB on the cc2540. I succeeded in getting the usb cdc uart working with the POWER_SAVING compiler macro disabled. THE PROBLEM: when I enable POWER_SAVING, the device does not enumerate properly when connected to a host computer. After...
    on Oct 11, 2012

  • Forum Post: Accurate clocks on the CC2540

    Ben Scammell
    I have a situation that is very very strange... We have 2 CC2540DK-MINI's side by side and we read the OSAL system clock when a button is pressed (interrupt). If we run 2 side by side, the clocks run out, and not by a few ms here and there, but seconds over a hour or so. We have disabled power...
    on Oct 24, 2012

  • Forum Post: Connect Nordic nRF24L01+ with OLP425 (based on CC2540)

    Armen Dzhagaryan
    I am trying to connect nRF24L01+ with OLP425 ble module. Since OLP425 ble module is based on CC2540 with 8051 core, I am curious if there some code examples of how to get nordic nRF24L01+ working with CC2540 through SPI. Does anyone know where I could find some examples or code snippets to help me...
    on Oct 12, 2012

  • Forum Post: RE: 16 bit attributes

    LPRF Rocks the World
    Just wanted to mentioned that we have this in the same file, hal_defs.h: /* takes a byte out of a uint32 : var - uint32, ByteNum - byte to take out (0 - 3) */ #define BREAK_UINT32( var, ByteNum ) \ (uint8)((uint32)(((var) >>((ByteNum) * 8)) & 0x00FF)) #define BUILD_UINT32(Byte0, Byte1,...
    on Jan 22, 2013

  • Forum Post: Undefined external HalFlashWrite on cc2540

    sudhir mamidi
    hello i am writing a application program where i need to save the data dynamically in flash memory when the application is running so i am using halflashwrite and halflashread #define FADDRH XREG( 0x6272 ) uint8 data1[4]; uint8 data[]={0xff,0xff,0x00,0x00}; HalFlashWrite(FADDRH, data, 1); ...
    on Feb 23, 2013

  • Forum Post: RE: CC2540DK: Issues Compiling Example Projects with IAR 8051 8.20

    ..\
    I have exactly the same problem and my opinions about it. John Pelochino Error[e16]: Segment SLEEP_CODE (size: 0x9 align: 0) is too long for segment definition. At least 0x1 more bytes needed. The problem occurred while processing the segment placement command "-Z(CODE)SLEEP_CODE=_SLEEP_CODE_SPACE_START...
    on Mar 5, 2013

  • Forum Post: RE: SmartRF05EB provides exactly the same debug functionality as CC Debugger, so why does the customer need to do this?

    ..\
    Thank you for offering to help. I really appreciate it and I realize that I should have turned to this forum for guidance and assistance with development tools, instead of to IAR, even though the problem appears to be rooted to IAR EWB IDE - Compiler. I sincerely do not have the will or luxury of...
    on Mar 7, 2013

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