GPIO的功能,简单说就是可以根据自己的需要去配置为输入或输出。但是在配置GPIO管脚的时候,常会见到两种模式:开漏(open-drain,漏极开路)和推挽(push-pull)。push-pull是现在CMOS电路里面用得最多的输出级设计方式。开漏输出就是不输出电压,低电平时接地,高电平时不接地。如果外接上拉电阻,则在输出高电平时电压会拉...
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**MCU的GPIO输出模式Open Drain & Push/Pull的理解**【Push-Pull推挽输出】原理:输出的器件是指输出脚内部集成有一对互补的MOSFET,当Q1导通、Q2截止时输出高电平;而当Q1截止导通、Q2导通时输出低电平。Push-Pull输出,实际上内部是用了两个晶体管(transistor),此
GPIO_SetupPinOptions (9、GPIO_OUTPUT、(GPIO_OPENDRAIN|GPIO_PULLUP));//(GPIO_PULLUP);//(GPIO_OPENDRAIN|GPIO_PULLUP)); GPIO_SetupPinMux (10、GPIO_MUX_CPU1、1); // EPWM6A (O):伺服\DC 电机 EPWM6 GPIO_SetupPinOptions (10、GPIO_OUTPUT、(GPIO_OP...
这个pin只有一个对地的开关。开关开时输出低电平。开关断时，pin悬空。需要输出高电平时，需要外接上拉...
//! \brief open drain output low #define CLR_PB5() \ do {\ DDRB |= _BV(5);\ PORTB ...
: 6700445I (926) gpio: GPIO[4]| InputEn: 0| OutputEn: 1|OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 I 请叫我杰西卡2023-02-14 07:56:02 如何用SPI模式读写SD卡? cardI (326) example: Using SPI peripheralI (336) gpio: GPIO[13]| InputEn: 0| OutputEn: 1|OpenDrain: 0 ...
What is the difference between gpio modes OPEN_DRAIN and OUTPUT_OPEN_DRAIN?by mchahn » Thu Nov 11, 2021 1:47 am Aren't all open-drain pins output pins? I have i2c pins (with pull-ups). Which should I use? I'll assume I should use OUTPUT_OPEN_DRAIN for now....
Is it possible to use GPIO described as "Push pull" in Open Drain? On the Host Interface Guide, only USB3_Event_Port1 had Open Drain and the other two were Push pull. There are check Open Drain output box on the customization tool are they consider to use it as Open Drain ...
无上拉下拉上拉- 下拉af,当mode 是Pin.AF_PP 或Pin.AF_OD 时,选择第二功能索引或名称7.获取/设置 GPIO 逻辑电平Pin.value(sw) Pin.value(LED, 1)Pin.value(LED, 0) LED.value(1) LED.value(0)当前GPIO第二功能索引:pin.af() 当前GPIO关联基本地址:pin.gpio() GPIO的模式:pin.mode()GPIO的名称...