Posted on February 02, 2012 at 18:07I need a ''watchdog timer'' that automatically sets a port pin when it times out and not reset the processor. I don't think the IWDG or WWDG do this since they just reset the processor on time-out. Therefore, I th...

Posted on July 13, 2011 at 05:51If two STM32 devices are wired together in a system, is it necessary to place fairly small series resistors between the port connection to limit the current in case a port or ports somehow starts driving current to th...

Posted on July 13, 2011 at 05:03I am repetitively sending/receiving 6 byte messages plus 16-bit CRC full duplex using SPI2 using DMA to/from another identical STM32 eval board with the same 72Mhz processor.  I am transferring at 9Mbps rate. However,...

Posted on July 10, 2011 at 23:26I have SysTick generating an IRQ every 100 usec. With no SPI DMA occurring I see about 881383 isr occurrences in 90 seconds (ideally 900000) if all clocks were perfect. When I enable fairly active  SPI DMA while runni...

Posted on May 11, 2010 at 19:43No bits in RCC_CSR at power-on