基于单片机ADUC841的spi程序 包括主机和从机的程序 CPHA 和CPOL的介绍
上传时间： 2014-01-02
上传用户：zyt
在DSP等芯片中有SPI接口，但是通常由于传输模式选择的错误导致连接失败，本文提供了详细的配置方案
标签： CPOL-CPHA
上传时间： 2013-06-16
上传用户：xieguodong1234
This example provides a description of how to use the USART with hardware flowcontrol and communicate with the Hyperterminal.First, the USART2 sends the TxBuffer to the hyperterminal and still waiting fora string from the hyperterminal that you must enter which must end by '\r'character (keypad ENTER button). Each byte received is retransmitted to theHyperterminal. The string that you have entered is stored in the RxBuffer array. The receivebuffer have a RxBufferSize bytes as maximum. The USART2 is configured as follow: - BaudRate = 115200 baud - Word Length = 8 Bits - One Stop Bit - No parity - Hardware flow control enabled (RTS and CTS signals) - Receive and transmit enabled - USART Clock disabled - USART CPOL: Clock is active low - USART CPHA: Data is captured on the second edge - USART LastBit: The clock pulse of the last data bit is not output to the SCLK pin
上传时间： 2013-10-31
上传用户：yy_cn
Enhanced version of the Serial Peripheral Interface available on Motorola s MC68HC11 family of CPUs.Enhancements include a wider supported operating frequency range, 4deep read and write fifos, and programmable transfer count dependent interrupt generation. As with the SPI found in MC68HC11 processors the core features programmable clock phase [CPHA] and clock polarity [CPOL]. The core features an 8bit wishbone interface. Very simple, very small.
标签： Peripheral Interface available Enhanced
上传时间： 2014-12-05
上传用户：invtnewer
