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dm8147的uart4读问题



公司一款产品主芯片dm8147,除了uart0调试串口,还使用了uart1、uart4与外围通信;

其中uart1读写正常,同样的测试环境、方法,uart4写正常,读不到数据,没有中断产生;

sdk版本ipnc rdk 3.5,uart4 rxd、txd脚分别为AE6、AF5,已经配置PINCNTL72、PINCNTL73都为0xE0002;

请问针对uart4还有其他需要配置的吗?谢谢?