Search the Community

I need help. I have a Tinker Board S R2. I want to use UART with Android 11 OS. Is this possible? In some information, Tinker Board 2 use UART with Android OS by "Mraa library for android". But, I want use it with Tinker Board S R2. Please, give me a answer. Thanks.

Hello. I want to use Uart in GPIO with Tinker Board S R2. But, below url, there are information aboutTinker Board 2 Series. https://github.com/TinkerBoard/TinkerBoard/wiki/Developer-Guide#mraa-library-for-android In Tinker Board S R2, Where is 'config.txt' ? I make it in /dtoverlay/config.txt, but i think it doesn't working. How to use GPIO port in Tinker Board S R2? How can I use 'config.txt' file? Thanks.

Hello, As the ASUS Tinker Board has so many wonderful features and direct access of lower level peripherals, I've decided to migrate my development from raspberry Pi to Tinker board. Right now, I'm starting with a basic UART code which sends and receive some strings serially but unfortunately it is not working as expected. The UART I'm trying to use UART1 (Pin number 8 and 10). Right now, if (serialDataAvail(fd)) is getting true every single time. After reading the data serialGetchar(fd), I found out that, the RX pin is in low state (receiving 255 continuously). Although, my code has no error, but I'll still add it here. #include <stdio.h> #include <string.h> #include <errno.h> #include <wiringPi.h> #include <wiringSerial.h> int main () { int fd,inCount = 0 ; char inBuff[500],OutBuff[500]; if (wiringPiSetup () == -1) { fprintf (stdout, "Unable to start wiringPi: %s\n", strerror (errno)) ; return 1 ; } else printf("wiringPi: init successfull! \n\r"); if((fd = serialOpen ("/dev/ttyS0", 115200)) < 0) { fprintf (stderr, "Unable to open serial device: %s\n", strerror (errno)) ; return 1 ; } else printf("Serila: /dev/ttyS0 successfully opened! \n\r"); while (1) { if (serialDataAvail(fd)) { inBuff[inCount] = serialGetchar(fd); if ( inBuff[inCount] == '\n') { printf("RX String=%s"); memset(inBuff,'\0',inCount); inCount = 0 ; } inCount++; if ( inCount == 500) { inCount = 0; memset(inBuff,'\0',inCount); } } } } The reply of "dmesg | grep tty" is attached below.