| MSP430采样数据与外设间的DMA传输 |
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| 引用本文： | 鲍凯凯,彭华,郑彪,郭建强.MSP430采样数据与外设间的DMA传输[J].信息技术,2011(10):139-141. |
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| 作者姓名： | 鲍凯凯 彭华 郑彪 郭建强 |
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| 作者单位： | 西南交通大学物理科学与技术学院,成都,610031 |
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| 摘 要： | 在MSP430的系统中有许多需要使用ADC采样,但由于单片机的运算速度有限,有时需要将采样数据传输到其它器件中进行处理。文中以MSP430F169与USB芯片PDIUSBD12实现DMA传输,其中定时器Timer模块控制ADC采样和传输过程的时序、DMA模块控制采样数据的传输,与普通的I/O操作相比,具有较高的数据传输能力。
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| 关 键 词： | MSP430 PDIUSBD12 采样数据 DMA传输 定时器 |
DMA transmission between the sampling-data of MSP430 and external device |
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| BAO Kai-kai,PENG Hua,ZHENG Biao,GUO Jian-qiang.DMA transmission between the sampling-data of MSP430 and external device[J].Information Technology,2011(10):139-141. |
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| Authors: | BAO Kai-kai PENG Hua ZHENG Biao GUO Jian-qiang |
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| Affiliation: | BAO Kai-kai,PENG Hua,ZHENG Biao,GUO Jian-qiang(College of Physical Science and Technology,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | Many systems of MSP430 need ADC sampling module,it's necessary to use faster device handling the samping data.This paper presents the DMA transmission between MSP430F169 and a USB microchip-PDIUSBD12.In this system,timer module manages the timing sequence of ADC sampling and transmission process,DMA module manages the transmission of sampling data.This system has a much faster ability of data transmission,compared with common I/O. |
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| Keywords: | MSP430 PDIUSBD12 sampling data DMA transmission timer |
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