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BP-CC3301: Firmware transmission error: Data sent from the Host is elevated to 0xFF

Part Number: BP-CC3301
Other Parts Discussed in Thread: CC3301

Tool/software:

Software version: cc33xx_thickmac_package_0_4_0_1.

RTOS: FreeRTOS

Issue description: When the Host sends data, all data is elevated to 0xFF.

According to the reference example and technical personnel's description, the first rising edge generated by the 3301 occurs 30ms after EN is enabled. However, the IRQ pin interrupt function of the Host is disabled.

Both the porting instructions and example code include a 2-second delay.

Could you provide a complete logic analyzer screenshot under the MCU driver? Specifically, we are interested in the behavior of IRQ and EN after the MCU starts, as well as the data transmitted over SPI.