Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Recent content by rt28

  1. R

    CC1101 doesn't transmit correctly

    yes, that's right, but I wanted to know how the MCU affects the the total data rate. because there are some delays in the MCU code and so many lines and functions. I think that may affect the data rate of the whole system. I wanted to know if there is a way to calculate the data rate (for...
  2. R

    CC1101 doesn't transmit correctly

    thanks for replying, where do you apply it? is it right to put inside the while(PIND.3) , where the MCU is checking for the completion of packet transmission? another question: how can I test the data rate of my transeiver? i don't have enough experience to find out the data rate. I know the...
  3. R

    CC1101 doesn't transmit correctly

    any ideas? i tried sending packets longer than 64 bytes using the MCU itself, it means first I send 62 bytes, flushing TXFIFO, and then again next 62 bytes of data. the information about the remaining bytes to send is fit into each 62 bytes. it worked but I think it may affect the max data rate...
  4. R

    CC1101 doesn't transmit correctly

    hi again I wanted to sent data longer than 64 bytes. I've read the datasheet and Design Note DN500, here are the steps for transmitting: TX: 1. Start by writing 64 bytes to the TX FIFO 2. Strobe TX 3. Poll the status byte or the TXBYTES register at a given rate to see if there is space...
  5. R

    CC1101 doesn't transmit correctly

    hi thanks, problem solved. when I used one_byte read and then I switched back to burst read, suddenly there were no errors! but thanks for the tip, I forgot about that. I'm gonna need that later. thanks for replying. I had seen errata sheet, it didn't help. from what I've gathered, I think...
  6. R

    CC1101 doesn't transmit correctly

    I found the problem, I had two functions to read from RXFIFO, one for burst reading and one for one-byte read. I was using the burst read, when I used the one-byte read function in a loop, there was no error. but I still don't know why burst read causes such errors.
  7. R

    CC1101 doesn't transmit correctly

    when I read TXBYTES (0x3A) the value is F ! but I used variable length mode and the first thing that I write in TXFIFO is 0x1F(31) 30 bytes data length and 1 byte address check. is there any other setting that must be done here, that I missed? - - - Updated - - - oh, sorry again i used the...
  8. R

    CC1101 doesn't transmit correctly

    any ideas? I have made it work, but there is always an error of 3 bytes and that would decrease the performance. has anybody ever had this problem? could it have something to do with register settings? thanks - - - Updated - - - the chip status byte value in receiver is 10, it means...
  9. R

    CC1101 doesn't transmit correctly

    hi thanks for replying, here are the differences: software settings is in Bold italic form. FSCTRL1: F_IF 0x 06 (152.34375 KHz) (0X0C: 304.6875 KHz ) FREQ2 : 0x21 F.carrier : 867.999939 MHz 0x10 433.9999695 MHz FREQ1: 0x62...
  10. R

    CC1101 doesn't transmit correctly

    i'm reading PARTNUM value ff and VERSION f. does this mean that the chip is partially dead?
  11. R

    CC1101 doesn't transmit correctly

    hi again i faced another problem: I want to sent 30 byte of data, address checkand variable data length are enable: transmitter: CC_WrReg(CCxxx0_TXFIFO,0X1F); CC_WrReg(CCxxx0_TXFIFO,5)...
  12. R

    CC1101 doesn't transmit correctly

    Hi, problem solved. I generated my code with RF Studio software, now it's working. I really made big mistake not using the software. thanks a lot for your help
  13. R

    CC1101 doesn't transmit correctly

    thanks for replying I don't have spectrum analyzer, can I use oscilloscope? is there any test that can be done by an oscilloscope? nevertheless I'll try to get to a spectrum analyzer for register setting I'll check their consistency with RF studio software.
  14. R

    CC1101 doesn't transmit correctly

    I'm using Rxq4, so I thought it must be software problem. i didn't generate register settings with RF Studio, I've been reading and working with registers for about two weeks and I chose the value of each register carefully. but since it doesn't work I must consider everything including using a...
  15. R

    CC1101 doesn't transmit correctly

    how can I be sure that CC1101 is transmitting? is it enough to read MARCSTATE 0x13? or there might be some other problem?

Part and Inventory Search

Back
Top