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MSP430FR5994开发板SPI无法产生时钟与数据

user4648818
Prodigy 150 points
Other Parts Discussed in Thread: MSP-EXP430FR5994, MSP430FR5994

使用MSP430FR5994开发板(MSP-EXP430FR5994)调试时，MSP430作为主设备，只有UCA0、UCA1、UCB0、UCB1能产生四线SPI的数据，UCA2、UCA3、UCB2、UCB3均无法发出时钟与数据信号。求解答。