目  錄
中文摘要…………………………………………………………………5
英文摘要…………………………………………………………………5
1. 引言 6
1.1. Cortex概述 6
1.2. STM32系列芯片概述 7
1.3. CAN總線概述 8
1.4. SD卡概述 9
1.5. FATFS文件系統(tǒng)概述 9
2. 系統(tǒng)總體設(shè)計(jì) 10
2.1. 總體方案概述 10
2.2. 系統(tǒng)上位機(jī)概述 11
2.3. 系統(tǒng)下位機(jī)概述 11
2.4. CAN從節(jié)點(diǎn)概述 11
3. 系統(tǒng)硬件選型與電路原理圖設(shè)計(jì) 12
3.1. 硬件選型 12
3.2. CAN主節(jié)點(diǎn)電路設(shè)計(jì) 13
3.2.1. 電源模塊 13
3.2.2. 時(shí)鐘模塊 13
3.2.3. 復(fù)位模塊 13
3.2.4. 調(diào)試模塊 14
3.2.5. CAN接口模塊 14
3.2.6. SD卡模塊 15
3.2.7. RS232模塊 15
3.3. CAN從節(jié)點(diǎn)電路設(shè)計(jì) 15
3.3.1. PT100模塊 15
3.3.2. 從節(jié)點(diǎn)地址選擇模塊 16
4. 系統(tǒng)PCB設(shè)計(jì)與硬件調(diào)試 16
4.1. 從原理圖到PCB 16
4.2. PCB布局 17
4.3. PCB布線 17
4.4. 硬件調(diào)試 18
5. 軟件設(shè)計(jì)與系統(tǒng)調(diào)試 20
5.1. CAN總線的數(shù)據(jù)幀與遠(yuǎn)程幀 20
5.2. CAN從節(jié)點(diǎn)程序設(shè)計(jì) 21
5.3. CAN主節(jié)點(diǎn)程序設(shè)計(jì) 21
5.4. Delphi上位機(jī)程序設(shè)計(jì) 23
5.5. 系統(tǒng)總體調(diào)試 24
6. 結(jié)束語(yǔ) 26
參考文獻(xiàn) ………………………………………………………………27

Cortex的應(yīng)用研究

摘要：本文介紹了基于Cortex M3的STM32F103xB的多點(diǎn)溫度監(jiān)控系統(tǒng)的設(shè)計(jì)，包括硬件設(shè)計(jì)、軟件設(shè)計(jì)。溫度采集部分采用高精度的鉑電阻PT100，通過(guò)STM32內(nèi)部自帶的12位AD，將溫度值轉(zhuǎn)化為數(shù)字信號(hào)。然后將數(shù)字形式的溫度值通過(guò)CAN總線傳到CAN主節(jié)點(diǎn)，主節(jié)點(diǎn)通過(guò)串口各從節(jié)點(diǎn)的數(shù)據(jù)發(fā)送到Delphi編寫(xiě)的上位機(jī)軟件，上位機(jī)對(duì)各點(diǎn)的數(shù)據(jù)進(jìn)行實(shí)時(shí)曲線顯示并進(jìn)行存貯。在沒(méi)有上位機(jī)的場(chǎng)合，主節(jié)點(diǎn)將數(shù)據(jù)以文本文檔的形式存儲(chǔ)在主節(jié)點(diǎn)的SD卡中。

關(guān)鍵詞：Cortex ，STM32， CAN總線，Delphi，PT100 ，SD卡，F(xiàn)ATFS文件系統(tǒng)

The Application Research of Cortex
                        
Abstract: This article describes a multi-point temperature monitoring system based the STM32F103xB MCU of Cortex M3, including hardware design and software design. The part of temperature acquisition uses the high precision PT100 .The analog temperature value is converted into a digital signal through the STM32 internal 12-bit AD. And the digital temperature value is transmitted to master node through the CAN bus. Then the master node transmit the data from all slave node to the PC software through the serial port.The PC software is made by Delphi.All slave nodes temperature is displayed in realtime chart and can be stored in PC for a later use. In the absence of PC , the master node will store data to the master's SD card  in TXT format .
Keywords: Cortex ,STM32,Controller Area Network, Delphi, PT100,SD Card,FAT File System