• HardFault_Handler after NVIC access.
    Used hardware: KEIL ARM MCB1700, eval How can the line: NVIC_EnableIRQ(UART0_IRQn); create an error HardFault 715: NVIC_EnableIRQ(UART0_IRQn); 0x000024B0 2005 MOVS r0,#0x05 0x000024B2 F000F9AF...
  • USB Reset issue with USBHID
    Hi everyone, We've implemented a custom LPC2141 based control board that communicates with a computer using HID. We based this code off Keil's USBHID sample. Occasionally, the computer can't connect...
  • After RESET
    In one of my projects where I use 89v51rd2 microcontroller, I connect one O/P pin to Electric AC bell through relay. My problem is when reset during switch ON, my O/P pin goes high and come down thus...
  • STM32F107 - NVIC - Priority
    Using a STM32F107VC (on the MCBSTM32C) I am able to setup and run an interupt driven peripheral. However, I am unable to set the priority of that interrupt using the 'Standard Peripheral' functions...
  • Need help in understanding NVIC
    Hi, While using statement like; NVIC_SetPriority(I2C_IRQn,Set_priority); What is max & min value for Set_priority. Can two interrupts have same priority. Also when I am in some ISR, how...