读取Uart0寄存器代码部分：
Code:
fifo_len = (READ_PERI_REG(UART_STATUS(UART0)) >> UART_RXFIFO_CNT_S)&UART_RXFIFO_CNT;
while (pack_num < fifo_len) {
read_package[pack_num] = READ_PERI_REG(UART_FIFO(UART0)) & 0xFF;
pack_num++;
}
下位机向Uart0发送数据，数据为16进制，长度为10，数据字段为：
ff ff 00 0a 04 03 01 01 01 00
UART0第一次接收数据：
ff ff 00 0a 04 03 01 01 01 00
第二次接收数据：
00 00 00 00 00 00 00 00 00 00 ff ff 00 0a 04 03 01 01 01 00
下位机停止发送，fifo_len = 10，依然判断出有数据，数据为：
00 00 00 00 00 00 00 00 00 00
第三次接收数据：
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff 00 0a 04 03 01 01 01 00
之后下位机停止发送，fifo_len = 10，依然判断出有数据，数据为：
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
****数据填充位数与要接收的位数相同Statistics: Posted by librafox — Tue Jun 26, 2018 9:12 pm
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