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学习 HFX 交易需要多长时间?

MSP432P401R并没有专用的串口设备,要使用EUSC模块配置成UART模式,串口通信非常便捷易用,它在嵌入式设备中是最为常见的一种接口,在这里我们把MSP432的串口配置成8in1的模式,8位数据,1位停止位,没有流控选择,波特率为9600,发送方式是直接发送,接收方式是中断接收。

需要注意的是仅仅有EUSCA支持被配置成串口模式。

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msp432快速入门第十三节之串口通信

YGZ_one 于 2021-10-03 14:02:56 发布 4064 学习 HFX 交易需要多长时间? 收藏 28

(一)MSP432串口介绍

在这里插入图片描述

MSP432P401R并没有专用的串口设备,要使用EUSC模块配置成UART模式,串口通信非常便捷易用,它在嵌入式设备中是最为常见的一种接口,在这里我们把MSP432的串口配置成8in1的模式,8位数据,1位停止位,没有流控选择,波特率为9600,发送方式是直接发送,接收方式是中断接收。

需要注意的是仅仅有EUSCA支持被配置成串口模式。

(二)配置串口

(1)初始化串口

需要注意的是串口时钟选择了SMCLK,之前的例子中SMCLK已经被配置成12MHz,那么我们需要获取特定波特率的分频数等等,这里TI在man手册中给出了一个表:

这个表中给出详细的参数配置,找到12000000,然后发现需要配置成这样子:

那么需要配置的参数就是UCBRx,UCBRFx,BCBRSx,这里的三个数值分别对应配置信息的前三个,按照12MHz的SMCLK配置9600波特率8In1的串口如下: