周立功ZLG_LPC213X的全套资料，这个是其中的SPI

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数字投影仪，ARM下的例程，参考下希望对大家有帮助-Digital projectors, ARM under the routine, refer to the following people want to help

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通过RS485端口不停地发送数据0xaa,用示波器观察RS485端口A、B信号线上的波形或者用RS485接收器接收发送的字符。-Through the RS485 port to send data continuously 0xaa, use oscilloscope to observe RS485 ports A, B signal waveform online or send RS485 receiver to receive characters.

TI TMS320DM642 FPGA OSD字符叠加源码，有较强的参考价值-TI TMS320DM642 FPGA OSD PD6450 source, and have strong reference value