• Using a ring buffer to transmit
    Using a LPC2400/LPC17xx family of microcontrollers, if I use a TX ring buffer, I think there is a risk of the THRE interrupt to come so quickly that the hardware TX buffer is emptied before any task...
  • Serial port ring buffer proglem??
    I use GetChar() and PutChar() functions to read or write to serial port but when write too long streams using PutChar() it stops at "while(txn > 31)" line in PutChar().. I think the interrupt must go...
  • Ring buffered, interrupt driven, UART driver
    To follow up on the thread a few weeks ago about polled vs. interrupt UART operation I've written one up this week and have posted it at: http://www.embeddedfw.com Yes it's my site but you get...
  • Dial Tone, ring back tone Generation
    How i can generate these tones from the controller and make controller to suply tones to all sets in case all telephone sets goes off-hook.. I know i have to make a delay of 400Hz for Dial Tone , for...
  • Circular buffer logical error?
    I was going through the sample code i obtained from the keil website for LpC2148 USB .As far as i could make out, the code just echos the contents of a buffer onto the hyperterminal when a keypress is...