• Strange RTX behavior with bootloader
    Hi dear ARM fellows, Firstly, let me introduce the context. I am developping a RTX/RL software for a custom board based on a LPC2388 µC. I was using an old version of MDK-ARM and RL-ARM to develop...
  • Strange behavior of the "smmls" instruction
    I try to optimize my code by substituting a pair of smull and sub instructions with one smmls instruction, but the smmls gives the wrong result! This is the test case: mov32 r1, #0x8000d286 mov32...
  • strange behavior with unsigned long variables
    I'm using the cygnal F124 chip. now my program is 33K in size and my ram memory isa bout 7.2K. I use the uart0 to print some information and one LCD, last week my unsigned long variable changed without...
  • Strange timing behavior in my code
    I write two codes for generating greq at PA0-Pa7: Diff in code 1 & code 2 is that only BSSR register is moved to define macro. code1 #define WRITE_TFT_DATA_PINS(VALUE) { \ GPIOA->BSRRL = (uint16_t...
  • Strange behavior of TCP NET on LPC2367
    Hello all! I have some problem with TCP NET Suit. I using LPC2367+Micrel KSZ8721 + TCP/IP Network Suit from Keil. When i set CCLK <= 32Mhz everything is fine. But when i try to set CCLK >32 Mhz there...