TreeCat 0 Posted August 29, 2022 I am not good at English. I'm sorry. I'm using TinkerBoard2S. The OS uses Android 11. I use the mraa library to read the Uart value. But sometimes this error appears. JNI DETECTED ERROR IN APPLICATION: input is not valid Modified UTF-8: illegal continuation byte 0xf0(The value after byte changes every time) Even if I try to modify the mraa library, I cannot modify it because it is read-only. Can't I handle the value that is not converted to utf8 from TinkerBoard2S? Share this post Link to post Share on other sites
tooz 47 Posted August 30, 2022 hello @TreeCat, did you enable uart? it can be enabled by editing /boot/config.txt what are the test steps and how did you read the values? perhaps we can try to reproduce the issue on our side Share this post Link to post Share on other sites
tooz 47 Posted August 30, 2022 looks like it's jvn issue not mraa: android ndk - JNI DETECTED ERROR IN APPLICATION: input is not valid Modified UTF-8: illegal start byte 0xf0 - Stack Overflow Share this post Link to post Share on other sites
