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STM32 GPIO port configuration problems

Time:12-04

As title, configuration STM32F303CC GPIO port high and low level, generated by CUBE MX

/* Configure GPIO pins: LED1_Pin LED2_Pin */
GPIO_InitStruct. Pin=LED1_Pin | LED2_Pin;
GPIO_InitStruct. Mode=GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct. Pull=GPIO_PULLUP;
GPIO_InitStruct. Speed=GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init (GPIOB, & amp; GPIO_InitStruct);

Configuration after the test is the high level
Through the keil GPIO_InitStruct. Pull=GPIO_PULLUP; Written GPIO_InitStruct. Pull=GPIO_PULLDOWN;

Why the actual test will not lower?

CodePudding user response:

Level need by SET_BIT CLEAR_BIT or by GPIOx - & gt; BSRR GPIOx - & gt; BRR to set the
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