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StanJerm · 2023-09-07

Hi there, i come across AN4760 p55, configuring GPIOB with alternate functions :GPIOB->AFR[0] = 0x0A000900; where does this 0A000900 come to config PB2 n PB6 to QSPI alternate function?GPIOB->AFR[1] = 0x00000000; ....GPIOF->AFR[0] |= 0x9900000000; ...

StanJerm · 2023-08-25

Hi there i m a student working on STM32F723 the first time, I encountered an register setting example as follows: GPIOC->MODER |= ((2<<(6*2)) \ (2<<(7*2))); i konw its setting the GPIO register but whats the meaning of * and 2<< at the beginning sen...

StanJerm · 2023-08-26

thx u so much !

StanJerm · 2023-08-26

wouldn't it be more simple to write this:GPIOC->MODER |= (1<<6) | (1 << 7); ??

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Bitwise shift left STM32F723

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