About dmitrystu

dmitrystu · 2017-01-09

Posted on January 09, 2017 at 11:46As described in RM0376 DocID025941 rev 4 datasheet page 882 the SW_BUF flag shows the packet buffer for the application software. But there is a mismatch in the Table 143 for IN-type endpoint for DTOG=1 SW_BUF=1. ...

dmitrystu · 2016-10-08

Posted on October 08, 2016 at 16:31Found a possible mistake in ''DocID025941 Rev 3'' page 276 in C3S[3:0] description 1100: DMA channel 3 remapped to USART4_TX 1101: DMA channel 3 remapped to USART4_TX Is it real routing scheme or it should be ...

dmitrystu · 2017-05-13

Posted on May 13, 2017 at 18:39AFAIK no native operators for bit rotation in C. It's a macro or static inline function uses bit shift.Usually like '(op1 >> op2) | (op1 << (32U - op2))'Sometimes compiler replaces it by ROR opcode.

dmitrystu · 2017-05-13

Posted on May 13, 2017 at 15:17Well. Using assembly code in C depends of the compiler used.For GCC toolchain (AC6 looks GCC compatible) you can use ugly https://gcc.gnu.org/onlinedocs/gcc/Using-Assembly-Language-with-C.html#Using-Assembly-Language-w...

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Doublebuffered USB endpoint for STM32L0

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Re: How to start with asembler on Cortex M4