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标题: SI7021温湿度传感器可替代SHT10，MSP430移植IO模拟IIC [打印本页]

作者: 张衍波 时间: 2015-3-30 10:42
标题: SI7021温湿度传感器可替代SHT10，MSP430移植IO模拟IIC
看到有人分享“MSP430 Launchpad SHT10传感器”，我也来分享下MSP430 Launchpad SI7021温湿度传感器。
IIC采用I/O口模拟，方便大家程序移植。

/*****************************Copyright (c)*************************************
**                            PP-DIY
**-----------------------------File Info----------------------------------------
** File name:             SI7021
** Created by：　　　　 P.P　
** Last modified Date:  2014-10-3
** Descriptions:　    MSP430G2xx3演示板+SI7021温湿度传感器
** Online shopping:    http://wsn-pp.taobao.com/
**                   QQ:44960120
********************************************************************************
** MSP430G2xx3 Demo - USCI_A0, 115200 UART Echo ISR, DCO SMCLK , Simulate IIC
** Description: Echo a received character, RX ISR used.
** USCI_A0 RX interrupt triggers TX Echo.
** Baud rate divider with 1MHz = 1MHz/9600 = ~104
** ACLK = n/a, MCLK = SMCLK = CALxxx_1MHZ = 1MHz
** SI7021_SDA=>

1.4
** SI7021_CLK=>

1.5
**
**             MSP430G2xx3
**          -----------------
**       /|\|             XIN|-
**       | |                |
**       --|RST       XOUT|-
**          |                |
**          |    P1.2/UCA0TXD|------------>
**          |                | 9600 - 8N1
**          |    P1.1/UCA0RXD|<------------
**          |                |
**    LED--|P1.0       P1.4|<----->SI7021_SDA
**          |                | SI7021
**          |          P1.5|------>SI7021_CLK
**          |                |
** PP-DIY
** 3/10. 2014
** Built with IAR Embedded Workbench Version: 5.40 and MSP-EXP430G2 Version:1.5
** Board

aunchPad Mcu: M430G2553 Sensors:SI7021
** 项目文件6个：include.h/sys.h/io.h/SI7021.h/main.c/SI7021.c/
** 演示板每隔1S读取SI7021温湿度数据，通过串口P1.2发出如下格式信息：
** "SI7021:Temperature=27.3'C Humidity=68.9%"
*******************************************************************************/
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