Forum Post: CSMA/CA - CHANNEL_ACCESS_FAILURE
Hello,everyone In the IEEE802.15.4 protocal, if CSMA-CA algorithm fails, it will set the MCPS-DATA.confirm = CHANNEL_ACCESS_FAILURE. And my question is what will the upper layer do next if CSMA-CA...
View ArticleForum Post: RE: CC2540 USB Dongle as a slave
Hi Jayanta, Are you referring to action upon button presses? I believe you can start by reading the Software Developers Guide and then take a closer look at our sample applications...
View ArticleForum Post: RE: the connection problem that between PC(windows7) with CC2540...
Hi, When you open SmartRF Studio you should be prompted to update firmware in the debugger, especially when you double click on CC2540/41 chip icons (which you do when you want to start a device...
View ArticleForum Post: RE: CC1101 not working? No SPI response
Now I found the information on page 23 in the datasheet that the amplitude of the signal is approximately 0.4 Vpp. So my signal seems to be correct. But is the DC offset correct?
View ArticleForum Post: RE: amateur band receivers
We have not seen a huge interest for operation the 136.7 - 160.0 MHz band so we have not spent time characterizing peformance in this frequency range. The radio is, however, fully functional in this...
View ArticleForum Post: RE: How do I read GPIO?
I have similar requirement and I have an external interrupt into P0. Any input pin in P0 can create an interrupt and I would like to have all 8 pins for P0 to enable interrupt. Can you tell me how to...
View ArticleForum Post: Using ISR to receive packet with cc2530 znp mini kit
Hi, I'm trying to make Cooridinator and End device having ability to send and receive packets (bi-directional communication). Instead of looping through while SRDY_IS_LOW() function on Cooridnator, I'm...
View ArticleForum Post: RE: packet from Coordinator sent twice as shown by Packet Sniffer
Is there any document or something to start with in order to understand better what is going on here? At least some basic instructions on what message types are there? It seems that I'm trying to...
View ArticleForum Post: RE: SLEEP_CODE ERROR Running Linker on IAR 8.10 CC2530 Application
First of all: Thank you Igor and thank you Dirty! Aniway, I tried the .xcl file you suggested (even if I had already tried that one) and even tried to insert a SLEEP_CODE segment definition in it but...
View ArticleForum Post: RE: Newbie help : How to programmatically communicate with USB...
Hi,[quote user="Sameer Munot"]ZNP binary files needs to be loaded on CC2531 . I assume ZNP binary file means Z stack. So through USB I need to communicate with ZNP.[/quote] Yes. Yes and Yes (though you...
View ArticleForum Post: BLE Gatt profiles on a custom PCB
I have a question regarding the use of BLE (using a CC2540) on a custom PCB. My pinout is different than the Mini Dev Kit, and I'm wondering if I can still use the gatt files for the MDK. I noticed...
View ArticleForum Post: RE: HCI Reference guide not matching operation w/ ATT_ErrorRsp
Hi Gary, Certain commands will respond with ATT_ErrorRsp, for example GATT_WriteCharValue and GATT_WriteLongCharValue. GATT_WriteNoRsp will not respond with anything. What write command do you issue...
View ArticleForum Post: RE: Connect Nordic nRF24L01+ with OLP425 (based on CC2540)
Hi Armen, You could have a look at the Keyfobdemo project which includes a SPI driver (integrated in the accelerometer driver files cma3000d.c/h). For our next stack release, BLEv1.3 targeted end of...
View ArticleForum Post: RE: How to configure CC2540 to only advertise once every minute?
Hi, I believe you’ve understood the gapRole_AdvertOffTime a bit wrong. It is used to indicate how long the advertisements shall last. During that time, advertisements will be sent frequently based on...
View ArticleForum Post: RE: Bootloader for CC2540
The bootloader itself is of 2KByte size What i'm trying to say, is maybe you need an external memory for this. Moreover, in BLE stack->documentation you can find a document regarding bootloader. I...
View ArticleForum Post: Does the CC2540 Mini Dev Kit uses RSSI power level adaptation?
Hi, I have recently been experimenting with RSSI values vs. distance with the CC2540 mini dev kit. Installed on the Keyfob is the application that comes with the flash programmer and the USB dongle...
View ArticleForum Post: RE: Bootloader for CC2540
Hi Nick, This is great news. Is there a Beta version you need tested? :-) We are in a big hurry to get our dsign completed and this is one of the final pieces. Thanks, Larry
View ArticleForum Post: RE: packet from Coordinator sent twice as shown by Packet Sniffer
All of these messages have to do with satisfying the requirements of the 802.15.4 and ZigBee specifications. Basically, you have a lot of reading to do while running in circles in order to get up to...
View ArticleForum Post: Unknown nodes showing up in the Associated Device List and...
I have a small unsecured network of a coordinator and 18 routers running 2.5.0 of the stack. I'm seeing 1 to 3 nodes showing up in the Associated Device List, when I'm performing a ZDO_IEEE_ADDR_REQ....
View ArticleForum Post: RE: tiwi-sl initialization blocks
Hi Chia, MSP430 is already integrated to the MSP430, please look MSP430 CC3000 project, and look at "basic_wifi_application" function "init_spi" You will find the exact SPI configuration - Elad
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