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f28335在线调试uart正常,烧入flash异常,与mosa卡通信正常



目前做了一个功能板采用f28335作为主控,采用uart串口与另一块板卡之间进行422通信,另一块板卡以0.5s为周期向本板发数,本板回应,即为正常,921600波特率。
当用jtag在线调试时422一切正常
当程序烧写到flash里,用另一块板卡与本板通信,发现本板无应答。
烧写在flash里,用moxa卡模拟那块板卡以0.5s一次与本板uart串口通信正常