setting registers bits in KEIL ARM uvision problem!

[kgavionics]

Hello guys
I'm using keil uvsion latest version and I came across this problem that is when I try to enable the clock for GPIOD on stm32f407 as following:

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RCC->AHB1ENR |= (1<<RCC_AHB1ENR_GPIOAEN) | (1<<RCC_AHB1ENR_GPIOBEN) | (1<<RCC_AHB1ENR_GPIODEN);
For some unknown reason, only GPIOD clock doesn't enable ( I get nothing on the GPIOD outputs nor inputs), but if I change the code to:

Code: [Select]

RCC->AHB1ENR |= (1<<RCC_AHB1ENR_GPIOAEN) | (1<<RCC_AHB1ENR_GPIOBEN) | (1<<3);//  it does work! What's going on here, anybody has any idea please?

[ataradov]

Those defines are already shifted bits, so the correct expression is

RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN | RCC_AHB1ENR_GPIOBEN | RCC_AHB1ENR_GPIODEN;

Also, bugs in compilers are exceedingly rare. Chances of you running one with a pin toggling code are nil. So, when something does not work as expected, look for issues in your code, not the compiler.

[kgavionics]

 My bad😊😊😊 !