• CMSIS-DSP: Matrix Inverse problem
    Hello, While debugging a DSP algorithm, I realized the problem is duo to the CMSIS matrix inverse function: arm_mat_inverse_f32. It's really strange and is driving me crazy. arm_mat_inverse_f32 returns...
  • Wrong amount of memory space reserved?!
    Hi all! I have a problem with the definition of memory space in the e.g. XT memory. I defined a segment , like above, with 1 byte length. ?XT?MEMORY_SIZE?mifare_main SEGMENT XDATA RSEG ?XT?MEMORY_SIZE...
  • relation between: Jtag clock and crystal
    Hello, I work with an controller (with two crystals - 32.768kHz and 18.432MHz). When the controller starts only the 32.768kHz crystal is working - the main crystal is only working if I turn it on...
  • CMSIS Matrix inverse returns singular for nonsingular matrices
    Hi I have been testing the CMSIS DSP matrix inverse function and am observing unexpected results. In particular, the function arm_mat_inverse_f32 returns ARM_MATH_SINGULAR for matrices that are clearly...
  • Customer Relations
    Okay, its me again. I ordered a sample set of 'widgets' from company XYZ, via email, and got zero reply. I waited a few days, then I called them. "The Guy" said that I should email them @ exactly where...