xintao220的专栏

欢迎使用本书。 通过学习本书， 您可以使用Microsoft公司最新的应用程序开发系统Visual Studio 2012，成为优秀的C++程序员。本书旨在讲述C++程序设计语言，然后讲述如何运用C++语言开发 自己的Windows应用程序。在此过程中，读者将了解这一最新Visual C++版本所提供的很多激动人 心的新功能。 Visual C++ 2012是Microsoft开发环境Visual Studio 2012的所有版本的一部分， 本书提到Visual C++时，都是指Visual Studio 2012包含的Visual C++ 2012功能。

This reference manual targets application developers. It provides complete information on how to use the STM32F101xx, STM32F102xx, STM32F103xx and STM32F105xx/STM32F107xx microcontroller memory and peripherals. The STM32F101xx, STM32F102xx, STM32F103xx and STM32F105xx/STM32F107xx will be referred to as STM32F10xxx throughout the document, unless otherwise specified. The STM32F10xxx is a family of microcontrollers with different memory sizes, packages and peripherals.

本文档是依据STM32 Reference Manual (RM0008)翻译的，已经与2009年6月的英文第9版(Doc ID 13902 Rev 9)进行了全面校对，更正了不少以前版本的错误。 在校对即将结束时，ST于2009年12月中旬又发布了英文第10版(Doc ID 13902 Rev 10)，为了与最新的 英文版同步，我们按照英文第10版结尾的”文档版本历史”中的指示，在翻译的文档中快速地校对更正了对 应的部分。由于时间的关系，没有逐字逐句地按照英文第10版进行通篇校对，鉴于芯片本身没有改变， 我们相信除了”文档版本历史”中指出的差别外，英文第10版与英文第9版不会再有更多的变化，遂定稿现 在这个翻译版本为对应的中文第10版文档。 由于我们的水平有限以及文档篇幅的庞大，翻译的过程中难免会有错误和遗漏的地方，希望广大读者们 能够及时向我们反馈您在阅读期间所发现的错误和问题，我们会尽快在下一个版本中更正。您可以发邮 件到[email protected]向我们提出您的意见和建议，谢谢。 意法半导体(中国)投资有限公司 MCU技术支持 2010年1月10日

/----------------------------------------------------------------------------- // F35x_ADC0_Buffered.c //----------------------------------------------------------------------------- // Copyright 2004 Silicon Laboratories, Inc. // // AUTH: BD / PC / BW // LMOD: BW 15 JUL 2004 // DATE: 06 APR 2004 // // This program demonstrates taking measurements using the 24-bit ADC on the // C8051F350/51 devices. // // Input pin configuration shown in ADC0_Init(). // // For a Noise measurement, connect AIN0 and AIN1 to AGND at the terminal // block. Set "USE_FLOAT" to '1', "PRINT_STATISTICS" to '1', // "PRINT_SAMPLES" to '0', and "PRINT_VOLTAGES" to '0'. // // This software configures the ADC to use an external VREF. Therefore, // on the 'F350 target board, J13 and J14 should have their shorting blocks // installed. // // The standard deviation (Sigma) of a sample set is equivalent to the // effective RMS noise of the conversion system. "Sigma", when converted // to Volts, is equivalent to the input-referred noise floor of the // sampling system. // // Typical values of Sigma from the C8051F350 rev B target board with // AIN0 and AIN1 grounded at the terminal block are around 9 to 11 LSBs // in bipolar mode. For a DC measurement, this is equivalent to a Signal- // to-Noise ratio of about 117dB, or about 20 bits of effective dynamic // range. // // 117dB = 20 log10 ( 11 / 2^23) // 20 bits = 117dB / 6dB/bit // // Another parameter of note for integrating converters is the number of // Noise-Free bits. For a Gaussian-distributed noise floor, this number // can be obtained by multiplying Sigma by 6, evaluating the number of // bits required to contain the result, and subtracting this number of // bits from the 24 available bits, as follows: // // 10 LSBs * 6 = 60 LSBs, which can be contained in 6 bits. Noise-free // resolution is 24bits - 6 bits = 18 bits. // // Refer to 'F350 datasheet tables "ADC0 Electrical Characteristics" and // "Absolute Maximum Ratings" for the MIN/MAX voltage range on input pins. // // If using the eval version of the Keil compiler, set "USE_FLOAT" to '0' // and calculate the standard deviation by taking the square root // of "variance". // // Target: C8051F35x // // Tool chain: KEIL C51 // // v1.0 PC 26 MAY 2004 // Initial Revision (Adapted from 'F350 Temp Sensor Demo) // // set USE_FLOAT to '0' to use EVAL version of Keil compiler

• Compatible with MCS-51™ Products • 4K Bytes of In-System Reprogrammable Fla – Endurance: 1,000 Write/Erase Cycles • Fully Static Operation: 0 Hz to 24 MHz • Three-Level Program Memory Lock • 128 x 8-Bit Internal RAM • 32 Programmable I/O Lines • Two 16-Bit Timer/Counters • Six Interrupt Sources • Programmable Serial Channel • Low Power Idle and Power Down Modes