pin is the pin on which to enable the interrupt (can be a pin object or any valid pin name).
mode can be one of: - - trigger on a rising edge; - - trigger on a falling edge; - - trigger on a rising or falling edge.ExtInt.IRQ_RISINGExtInt.IRQ_FALLINGExtInt.IRQ_RISING_FALLING
pull can be one of: - - no pull up or down resistors; - - enable the pull-up resistor; - - enable the pull-down resistor.pyb.Pin.PULL_NONEpyb.Pin.PULL_UPpyb.Pin.PULL_DOWN
callback is the function to call when the interrupt triggers. The callback function must accept exactly 1 argument, which is the line that triggered the interrupt.
HTTP(Hypertext Transfer Protocol)是一种用于传输超文本的协议。它是一种无状态的、应用层的协议,用于在计算机之间传输超文本文档,通常在 Web 浏览器和 Web 服务器之间进行数据通信。HTTP 是由互联网工程任务组(IETF…
不同路径 II
题目描述
一个机器人位于一个 m x n 网格的左上角 (起始点在下图中标记为 “Start” )。 机器人每次只能向下或者向右移动一步。机器人试图达到网格的右下角(在下图中标记为 “Finish”)。 现在考虑网格中有障碍物。…