当GPIO处于output模式,一般选择no pull,引脚能够正确地输出目标值; 当GPIO处于input模式,需要根据默认的输入值来确定配置模式,如果默认输入的值为1时,最好配置为pull up,否则,最好配置为pull down; 当按照上面的规则进行配置之后,则能够避免外部电路没有上拉、下拉电阻时出现的不确定情况。 注意:上拉(pull up)是...
I have read chapter 24 from technical reference manual LS1043 ARDB, where I can not found any register to configure internal pull-up /pull-down for GPIO. So Just wanted to confirm that there is no option available to set internal pull-up/pull-down when we configure pin as GPIO. Request...
I have read chapter 24 from technical reference manual LS1043 ARDB, where I can not found any register to configure internal pull-up /pull-down for GPIO. So Just wanted to confirm that there is no option available to set internal pull-up/pull-down when we configure pin as GPIO. Req...
We have also tested the ESP and the voltage is 2.9V on GPIO0. The GPIO0 is set up using Arduino IDE with the code: pinMode(0, INPUT); I have even tried using internal pull-downs with the code: pinMode(0, INPUT_PULLDOWN); This sucesfully pulls the pin low to 0V when the ...
I just saw this bug while searching the web. I haven't been able to get a Pico 2 so I bought a Seeed Xiao RP2350 board which I just received yesterday. Maybe it's a good thing that these boards have not been more available...Here is the errata excerpt
I have read that GPIO_34 - GPIO_39 have no pullup / pulldown resistors no matter if they are connected to RTC_MUX or IO_MUX. Is this true? Are pins RTC_6 - RTC_9 affected by 3.6 bug too? And if so, which register (XTAL_32 / TOUCH) should I use for RTC pins 8 (XTAL_32...
direction $ cat /sys/class/gpio/gpio336/value 0 Before the GPIO direction is changed from an input to an output, exar_set_value() is called with value = 1, but since the GPIO is an input when exar_set_value() is called, _regmap_update_bits() reads a 1 due to an external pull...
GPIO input mode with pull-up/pull-down state. Let’s understand GPIO pin in input mode with external or internal pull up /pull down resistor
GPIO_CHECK(GPIO_IS_VALID_GPIO(gpio_num), "GPIO number error", ESP_ERR_INVALID_ARG); REG_SET_BIT(gpio_pu_pd_desc[gpio_num].reg, gpio_pu_pd_desc[gpio_num].pd); return ESP_OK; } esp_err_t gpio_pulldown_dis(gpio_num_t gpio_num) { GPIO_CHECK(GPIO_IS_VALID_GPIO(gpio_num),...
Re: GPIO internal pull-up and pull-down resistance value PostbyESP_Sprite»Thu Dec 15, 2022 1:23 am aanschariuswrote:↑ Tue Dec 13, 2022 3:21 pm 10K is waaayyy to low, if you have several pullup's downs, the drain from 3.3 or GND to all input becomes to high and the board...