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LORA SX1280手册 部分翻译

更新时间:2023-11-04 20:30:36 大小:3M 上传用户:yyxwhy查看TA发布的资源 标签:lorasx1280 下载积分:2分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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lora sx1280手册,部分翻译。 9.3 SPI Interface SPI接口通过一个同步全双工帧来访问配置寄存器,该帧对应于摩托罗拉/飞思卡尔术语中的CPOL = 0和CPHA = 0。仅实现 了从端。The SPI interface gives access to the configuration register via a synchronous full-duplex frame corresponding to CPOL = 0 and CPHA = 0 in Motorola/Freescale nomenclature. Only the slave side is implemented. 发送地址字节后跟随数据字节用于写访问,而发送地址字节并接收读字节用于读访问。NSS引脚在帧开始时变为低电平, 在数据字节之后变为高电平。An address byte followed by a data byte is sent for a write access whereas an address byte is sent and a read byte is received for the read access. The NSS pin goes low at the beginning of the frame and goes high after the data byte. MOSI由SCK下降沿上的主设备生成,并由SCK上升沿上的从设备(即此SPI接口)采样。MISO由SCK下降沿上的从属设备生 成。MOSI is generated by the master on the falling edge of SCK and is sampled by the slave (i.e. this SPI interface) on the rising edge of SCK. MISO is generated by the slave on the falling edge of SCK. 传输总是由NSS引脚变低开始的。当NSS较高时,MISO为高阻抗。A transfer is always started by the NSS pin going low. MISO is high impedance when NSS is high. SPI在外部SCK时钟上运行,允许高达20 MHz的高速The SPI runs on the external SCK clock to allow high speed up to 20 MHz 主机通过发出NSS信号来终止SPI处理,它不会以参数形式明确发送命令长度。主机不得在事务字节内引发NSS。The host terminates an SPI transaction by raising the NSS signal, it does not explicitly send the command length as a parameter. The host must not raise NSS within the bytes of a transaction. 如果主机发送需要参数的命令,则必须在提高NSS之前发送所有参数。否则,收发器将对丢失的参数使用未知值。If the host sends a command requiring parameters, all parameters must be sent before raising NSS. If not, the transceiver will use unknown values for the missing parameters.

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sx1280_81.pdf 3M

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