• cmsis NVIC question.
    Hello, Everybody. I have several questions. 1. Please See the NVIC_Type structure. I don't understand about why ISER,ICER,ISPR and ICPR use size of array 1( I think It can use just __IO uint32_t ISER;...
  • ARM Cortex M3 STM32F207 processor hangs during the initializing if the code-size is more then 64k
    Hallo, I'm using a ARM Cortex M3 STM32F207 processor and if the code of  my project becomes a value of more than 64k, the processor hangs before the PC reach the __main(). The code starts at 0x08020000...
  • What is the relationship between UART and printf within retarget?
    HI. I'm trying to understand the relationship between UART and printf within retarget. as I understand, retarget supports to implement low level function fputc, if I want to use printf(). if I am...
  • Cortex M3 peripheral Bit Banding limit?
    Is there an intrinsic limit to the width of the bit banding for peripherals for the Cortex M3? EFM32 Giant Gecko seems to have a limit of eight bits - bits 8 to 31 does not seem to work. Is this normal...
  • How many times same interrupt can be in pending state at a time? (In ARM CM-3)
    Could not find the answer to How many times same interrupt can be in pending state at a time? (In ARM CM-3) e.g. : We are processing one interrupt INT_RX, at the same time 3 more packets received. so...