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关于 28069 spi fifo,您可以参考用户指南的
12.3.7 SPI FIFO Description
user5547045 说:设定 SpiaRegs.SPIFFTX寄存器的值为0xE040有何特定含义吗?该如何理解其各bit位的设定呢?
设定 SpiaRegs.SPIFFRX寄存器的值为0x2044有何特定含义吗?该如何理解其各bit位的设定呢?
您可以对照一下 Table 12-17. SPIFFTX Register Field Descriptions
0xE040=Binary:1110000001000000b
Table 12-18. SPIFFRX Register Field Descriptions
0x2044=Binary:0010000001000100b