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vinodstanur

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  1. Like
    vinodstanur got a reaction from xpg in stellaris video player (25 fps with audio, 320x140 resolution)   
    Hi, here is my new mad project, a small video player which plays uncompressed video file stored in as sd card. It can play 25fps video at 320x140 resolution with audio... Color depth is 16bit/pixel.


     

     
    http://blog.vinu.co.in/2013/04/stellaris-launchpad-based-video-player.html
     
     
    It plays a special format, my own uncompressed video format, the only disadvantage is it will take more memory in sd card compared to compressed formats...

     

     

     
    Source code is open....
  2. Like
    vinodstanur got a reaction from tingo in stellaris video player (25 fps with audio, 320x140 resolution)   
    Hi, here is my new mad project, a small video player which plays uncompressed video file stored in as sd card. It can play 25fps video at 320x140 resolution with audio... Color depth is 16bit/pixel.


     

     
    http://blog.vinu.co.in/2013/04/stellaris-launchpad-based-video-player.html
     
     
    It plays a special format, my own uncompressed video format, the only disadvantage is it will take more memory in sd card compared to compressed formats...

     

     

     
    Source code is open....
  3. Like
    vinodstanur got a reaction from zborgerd in stellaris video player (25 fps with audio, 320x140 resolution)   
    Hi, here is my new mad project, a small video player which plays uncompressed video file stored in as sd card. It can play 25fps video at 320x140 resolution with audio... Color depth is 16bit/pixel.


     

     
    http://blog.vinu.co.in/2013/04/stellaris-launchpad-based-video-player.html
     
     
    It plays a special format, my own uncompressed video format, the only disadvantage is it will take more memory in sd card compared to compressed formats...

     

     

     
    Source code is open....
  4. Like
    vinodstanur got a reaction from reaper7 in stellaris video player (25 fps with audio, 320x140 resolution)   
    Hi, here is my new mad project, a small video player which plays uncompressed video file stored in as sd card. It can play 25fps video at 320x140 resolution with audio... Color depth is 16bit/pixel.


     

     
    http://blog.vinu.co.in/2013/04/stellaris-launchpad-based-video-player.html
     
     
    It plays a special format, my own uncompressed video format, the only disadvantage is it will take more memory in sd card compared to compressed formats...

     

     

     
    Source code is open....
  5. Like
    vinodstanur got a reaction from bluehash in stellaris video player (25 fps with audio, 320x140 resolution)   
    Hi, here is my new mad project, a small video player which plays uncompressed video file stored in as sd card. It can play 25fps video at 320x140 resolution with audio... Color depth is 16bit/pixel.


     

     
    http://blog.vinu.co.in/2013/04/stellaris-launchpad-based-video-player.html
     
     
    It plays a special format, my own uncompressed video format, the only disadvantage is it will take more memory in sd card compared to compressed formats...

     

     

     
    Source code is open....
  6. Like
  7. Like
    vinodstanur reacted to igor in Strange problem with stellaris launchpad... PORTB (PB6 and PB7) not working properly if PORTD is enabled!   
    There are several pins that have restrictions on their use (connections on the launchpad, shared function with special peripherals so require special incantation to program, etc.)
     
    Unfortunately I haven't found a concise summary of such restrictions, so I have been compiling one.  Will add this to the list.
  8. Like
    vinodstanur reacted to dellwoodbu in Strange problem with stellaris launchpad... PORTB (PB6 and PB7) not working properly if PORTD is enabled!   
    This was done for MSP430 compatibility on those pins.  PB6 and 7 provide SSI functions.  PD0 and PD1 provide I2C function.  The MSP has a module that provides both on the same MCU pin.  The Stellaris requires using two pins to match the MSP functionality.
     
    Dexter
  9. Like
    vinodstanur reacted to bluehash in Strange problem with stellaris launchpad... PORTB (PB6 and PB7) not working properly if PORTD is enabled!   
    Not damaged. The pins are shorted via a 0R resistor. See pg 9 of stellaris  user manual.
     

  10. Like
    vinodstanur reacted to dellwoodbu in Couldn't read GPIO pin of stellaris (push buttons)   
    PF0 is on this device shared with an NMI signal. In order to not accidentally trigger NMI Stellaris "locks" this GPIO pin from being changed by default.
     
    Below is the code from StellarisWare\boards\ek-lm4f120xl\drivers\buttons.c which unlocks PF0 so that it can become an input and be read. You may also need to enable the internal weak pullups.
     

    // // Unlock PF0 so we can change it to a GPIO input // Once we have enabled (unlocked) the commit register then re-lock it // to prevent further changes. PF0 is muxed with NMI thus a special case. // HWREG(BUTTONS_GPIO_BASE + GPIO_O_LOCK) = GPIO_LOCK_KEY_DD; HWREG(BUTTONS_GPIO_BASE + GPIO_O_CR) |= 0x01; HWREG(BUTTONS_GPIO_BASE + GPIO_O_LOCK) = 0;
  11. Like
    vinodstanur reacted to pramode in Hello from Kerala, India!   
    Just wanted to say Hello! Joined the forum some time back ... I am from Kerala, India and I love to play with embedded stuff on Linux!
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