MSP430 TI-RTOS UART_read接口存在bug。
在高波特率下，连续接收多个数据，会存在丢失数据问题。。单个一个个发正常。
如下：
0x10，0x11, 0x12, 0x13, 0x14, 0x15, 一个个发，从0x10 - 0x15正常
如果这6个字节是一同发的， 每次只能接收到2个， 连续发3组后接收到
0x11, 0x15, 0x11, 0x15, 0x11, 0x15
这个问题太低级了，波特率750000
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