3 是否所有USB C型电缆都支持全功率输出 USB Power Delivery可以通过专门为支持USB Type A / B的电缆而工作。 由于USB Type C的设计要晚得多，所以我很好奇。默认情况下，所有C型USB电缆是否都支持USB PD？它们是否支持一定水平或全100W？ 相关：USB Power Delivery是否可以处理不支持PD的USB电缆？ 15 usb usb-pd
2 PIC12F675 GP4不起作用 我正在为一个项目使用PIC12F675，除一件事情外，其他所有东西都工作正常。GP4不能用作数字IO。我已经看了很多配置和代码，但是找不到任何东西。 配置： #pragma config FOSC = INTRCCLK #pragma config WDTE = OFF #pragma config PWRTE = OFF #pragma config MCLRE = OFF #pragma config BOREN = ON #pragma config CP = OFF #pragma config CPD = OFF 码： #include <xc.h> #include <math.h> #include "config.h" #define _XTAL_FREQ 4000000 void delay(unsigned int … 9 pic c embedded programming audio oscillator spark dc-dc-converter boost charge-pump eagle analog battery-charging failure humidity hard-drive power-supply battery-charging charger solar-energy solar-charge-controller pcb eagle arduino voltage power-supply usb charger power-delivery resistors led-strip series usb bootloader transceiver digital-logic integrated-circuit ram transistors led raspberry-pi driver altium usb transceiver piezoelectricity adc psoc arduino analog pwm raspberry-pi converter transformer switch-mode-power-supply power-electronics dc-dc-converter phase-shift analog comparator phototransistor safety grounding current circuit-protection rcd batteries current battery-operated power-consumption power-electronics bridge-rectifier full-bridge ethernet resistance mosfet ltspice mosfet-driver ftdi synchronous fifo microcontroller avr atmega atmega328p verilog error modelsim power-supply solar-cell usb-pd i2c uart