{"error":{"root_cause":[{"type":"query_shard_exception","reason":"failed to create query: {\n \"regexp\" : {\n \"keyword\" : {\n \"value\" : \".*SN75185,pdf(MULTIPLE RS-232 DR.*\",\n \"flags_value\" : 65535,\n \"max_determinized_states\" : 10000,\n \"boost\" : 1.0\n }\n }\n}","index_uuid":"SON-ziQURzKK3JljPlVlCQ","index":"recommend_keyword_search_v1"}],"type":"search_phase_execution_exception","reason":"all shards failed","phase":"query","grouped":true,"failed_shards":[{"shard":0,"index":"recommend_keyword_search_v1","node":"c8Ry91qkQA6igO07LZRl5w","reason":{"type":"query_shard_exception","reason":"failed to create query: {\n \"regexp\" : {\n \"keyword\" : {\n \"value\" : \".*SN75185,pdf(MULTIPLE RS-232 DR.*\",\n \"flags_value\" : 65535,\n \"max_determinized_states\" : 10000,\n \"boost\" : 1.0\n }\n }\n}","index_uuid":"SON-ziQURzKK3JljPlVlCQ","index":"recommend_keyword_search_v1","caused_by":{"type":"illegal_argument_exception","reason":"expected ')' at position 34"}}}]},"status":400}
The SN75185 combines three drivers and five receivers from the TI SN75188 and SN75189 bipolar
2010-09-02 01:32
RS-232、RS-422与RS-485的区别
2012-08-15 13:10
一、串口协议与RS-232标准1. 串口协议串口通信(Serial Communication), 是指外设和计算机间,通过数据信号线 、地线、控制线等,按位进行传输数据的一种通讯方式。串口通信协议
2022-02-15 06:31
1、RS-232/422/485协议描述 RS-232通讯的最大传输距离在不增加缓冲器的情况下可以达到15m左右,传输距离较短,所以RS-485与RS-422通讯方式就
2021-11-30 06:51
RS-232发送模块
2012-08-20 15:31
提示:文章写完后,目录可以自动生成,如何生成可参考右边的帮助文档SCI、UART和RS-232的区别前言一、SCI,UART和RS-232的概念1.SCI二、使用步骤1.引入库2.读入数据总结前言
2022-02-09 07:36
文章目录文章目录文章目录一、串口协议和RS-232标准1.串口通讯2.RS-2323.RS232电平与TTL电平的区别(1).TTL电平标准(2)具体区别二、USB/TTL转232"模块
2022-01-25 08:06
文章目录前言一、什么是串口协议和RS-232标准?1. 电平标准2.STM32的USART二、使用步骤1.引入库2.读入数据总结前言一. 了解串口协议和RS-232标准,以及RS232电平与TTL
2022-02-15 07:50
文章目录一、串口协议和RS-232标准(一)、TTL电平标准(二)、RS232标准二、搭建STM32开发环境1.安装jdk2.安装STM32CubeMX一、串口协议和RS-232标准串口通信指串口按
2022-02-15 07:38
本篇主要叙述串口协议和RS-232标准,以及RS232电平与TTL电平的区别;了解"USB/TTL转232"模块(以CH340芯片模块为例)的工作原理。
2022-02-11 06:51