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Recent content by Ravindrakant Jha

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    Timing Analysis in FPGA

    Thanks sir ,for the getting me started ,I have implemented the design on Xillinx it shows the worst case time slack is 18.08ns and it can be improved to the 1.08 ns so for that is it necessary to get the fundamentals of Static timing analysis be applied here?? and I have also changed the...
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    Timing Analysis in FPGA

    Hello All, I have written a code for gray to binary conversion in verilog using Xillinx XST and also checked the output on FPGA (Spartan 3E).Now I want to perform the timing analysis for the same.I need help here how to get it started ,things are completely new to me. Thanks
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    [ARM] STM32F407 Dicovery Board

    Hello All, I am getting this problem while using USART of STM32F407 discovery Board,I have configured the USART1 ,pin no PB6(Tx) and PB7(Rx) for the purpose,In the program whenever the USART something from terminal ,the led glows.But the STM32F407 is not receiving anything, I configured the...
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    [ARM] GSM sim900A interfacing with STM32F407

    void USART1_IRQHandler() { if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) //it checks receive complete interrupt(USART_IT_RXNE) on USARTx { rx_web = USART_ReceiveData(USART1); //receiving data from usart 1 if(rx_web == 0x0A || rx_web == 0x0D) //counting ^m ^j with...
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    [ARM] GSM sim900A interfacing with STM32F407

    thanks for the quick replies... Delay routine was missed,now command response can be seen on the terminal,Current i got stuck with this issue, I have made a function for AT+CREG? command to check its response and take necessary actions. But this function stalls after USART_puts(&command[0])...
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    [ARM] GSM sim900A interfacing with STM32F407

    Yes sir,I am using the Serial Interrupt to receive the modem response [Code Snippet] void USART1_IRQHandler() { if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) //it checks receive complete { rx_web = USART_ReceiveData(USART1); Line_valid=1; if(rx_web == 0x0A || rx_web...
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    [ARM] GSM sim900A interfacing with STM32F407

    Hello, I am using STM32F407 discovery board for interfacing with GSM module, I am getting a problem that when i send USART_puts("AT\r") commands then i get the response OK only for the first command ,the second command USART_puts("AT+CREG?\r")do no execute . But if i send only single command...
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    [SOLVED] STM32F407 discovery board environment setup

    the problem is with retarget_printf library..it is solved.
  9. R

    [General] programming issue with P89V51RD2FA

    which tool are you using to download the firmware to chip??? if you are using flash magic then try changing the baud rate ..
  10. R

    [SOLVED] STM32F407 discovery board environment setup

    Hello,All I am totally new to the ARM cortex processors,and started setting up the environment for STM32F407VG discovery board. The compiler i am using is CoIDE with gcc-arm-none-eabi-4_7-2012q4-20121208-win32 when building the program in the IDE an error showed up. collect2.exe: error: ld...
  11. R

    [General] BMA250e accelerometer

    Hello, What do we mean by offset compensation inside an accelerometer?
  12. R

    [General] BMA250e accelerometer

    hello All, I am using BMA250e accelerometer in my project,but i am unable to get the interrupt generated when orientation changes for an e.g. Portrait to landscape mode. the way i am proceeding is as follows. 1.Map the orientation interrupt to a particular Interrupt pin (INT1 and INT2) in code...
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    [51] cc2530 Linux Environment

    Can anybody tell me how to set up the environment for cc2530 SoC if working in linux ubuntu like toolchain and compiler information etc??
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    [51] how to Programming cc2530?

    Source library for cc2530 SoC is available on http://contiki.sourceforge.net/docs/2.6/a00694_source.html it is also available on TI site.
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    [SOLVED] Over the air Firmware upgrade

    sir i just want to know is there any method to implement Over The Air (OTA) firmware up gradation using Low power RF technology in the TI based cc25XX micro controllers? As most of the code are written using z-stack.
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