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供应商芯片需要在DR脚拉高后数据才准备好,有办法可以实现读取吗?只收不发或者发送空buf
逻辑分析仪上面最后一根线为DR引脚电平
status_t SPI_DRV_MasterTransfer(uint32_t instance, const uint8_t *sendBuffer, uint8_t *receiveBuffer, uint16_t transferByteCount);
把这个函数的的 sendBuffer 设为 NULL,就是只接收, receiveBuffer 设为 NULL,就是只发送
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