1. 使用初始状态(一上电)处于拉低状态的引脚做这个GPIO,比如EIM_D31, 你查看一下datasheet,它应该是PD的。即Pull Down. 2. 使用10K或者4.7K,拉低你电源的Enable脚,使它的初始状态为LOW电平。 这样的话,你随便使用CPU的哪个GPIO,都可以控制。 另外,你只要在内核中开这个电源就可以了,不要在u-boot中开或者...
Hi , You can have the pin configured as GPIO OUTPUT (muxed to the GPIO module), and trigger ADC conversions on that pin (always muxed, connected
STM32 GPIO_PinRemapConfig函数的问题。。在写STM32 TIM2 4通道PWM输出时为什加入GPIO_PinRemapConfig(GPIO_Re
GPIO[31:1]= 32'hz; if(SW[0]==1) GPIO[0]=1'b1; else GPIO[0]=1'b0; end endmodule all the pins are assigned correctly using the pin editor. The code compiles fine. But,when i try to read the output from the GPIO[0] pin, on the board, onto a scope,there is...
Here is a screenshot of the gpio configuration: here is the cubeMX configuration function: staticvoidMX_GPIO_Init(void){GPIO_InitTypeDef GPIO_InitStruct={0};/* USER CODE BEGIN MX_GPIO_Init_1 *//* USER CODE END MX_GPIO_Init_1 *//* GPIO Ports Clock Enable */_...
Here is a screenshot of the gpio configuration: here is the cubeMX configuration function: staticvoidMX_GPIO_Init(void){GPIO_InitTypeDef GPIO_InitStruct={0};/* USER CODE BEGIN MX_GPIO_Init_1 *//* USER CODE END MX_GPIO_Init_1 *//* GPIO Ports Clock Enable */_...
Hi all, I thought I would post an extension of my GPIO problems in a new thread to address a specific issue. I'm trying to receive a simple 3.3v signal through one of the GPIO pins on the expansion header as the return from a basic range finder. It's going to enable a clock setu...
gpio_registerForInterrupt(masks, gpioTactInterruptHandler, NULL); gpio_configurePin(TACT_PORT, TACT_PIN, GPIO_EN_INT_FALLING_EDGE | GPIO_INPUT_ENABLE | GPIO_PULL_UP, GPIO_PIN_INPUT_HIGH); Find a schematic detail attached: Best regards ...
gpio_registerForInterrupt(masks, gpioTactInterruptHandler, NULL); gpio_configurePin(TACT_PORT, TACT_PIN, GPIO_EN_INT_FALLING_EDGE | GPIO_INPUT_ENABLE | GPIO_PULL_UP, GPIO_PIN_INPUT_HIGH); Find a schematic detail attached: Best regards ...
来看GPIO_Initstruct的定义, 里面有Pin—管脚号; Mode-输入模式或者输出模式,其中输出又分为推挽输出和开漏输出,不了解的同学可以去查阅相关资料,简单地说如果你想要电平转换速度快的话,那么就选push-pull,但是缺点是功耗相对会大些。 如果你想要功耗低,且同时具有“线与”的功能,那么就用open-drain的模式; ...