TC397 QSPI波特率异常问题

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zhaolala
Level 1
Level 1
5 replies posted First question asked First reply posted
1. TC397 datasheet 描述QSPI max波特率50M; 2.在英飞凌官方qspi demo SPI_DMA_1 for KIT_AURIX_TC397_TFT中,设置波特率为50M时,收发数据异常; 3. 在2的条件下,只要设置的波特率低于23M, 收发数据正常,与datasheet中描述的max 波特率50M矛盾;
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4 回复数
cool0o0mark
Level 3
Level 3
10 replies posted 5 replies posted 10 questions asked
看你的板子外部晶振是否与CPU保持一致,另外看SPI配置的频率是否符合
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zhaolala
Level 1
Level 1
5 replies posted First question asked First reply posted
板子是英飞凌官方的TC397_TFT开发板, 程序是官方的spi DMA demo, 我理解这些配置没啥问题,
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zhaolala
Level 1
Level 1
5 replies posted First question asked First reply posted
就修改了该参数 #define MASTER_CHANNEL_BAUDRATE 23 000000 /* Master channel baud rate */
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cool0o0mark
Level 3
Level 3
10 replies posted 5 replies posted 10 questions asked
SPI波特率是配置出来的,不是设置的
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