I didn't have to do this on the 9.9 2019-08-03 image or the 9.11 2019-11-02 image. I enabled the TX and RX pins for UART 1 with:
config-pin P9.24 uart config-pin P9.26 uart I was able to send to and receive from an RS232 device using a MAX232 module, using screen and regular file output redirection. [image: Screen Shot 2019-11-10 at 2.51.52 AM.png] On Sunday, November 10, 2019 at 7:42:16 PM UTC-5, [email protected] wrote: > > In your version.sh output I don't see the UART 1 enabled. Add the > BB-UART1-00A0.dtbo to the uEnv.txt as shown below to enable it. > > uboot_overlay_addr0=/lib/firmware/BB-UART1-00A0.dtbo > > Then reset the device and should work. To test it, hook up a scope and > send some characters via the terminal as shown here > <https://raspberry-projects.com/pi/command-line/io-pins-command-line/uart-transmit-from-the-command-line> > . > > On Tuesday, 15 October 2019 01:05:45 UTC+13, Mridul Ahuja wrote: >> >> >> I have a BeagleBone Black running *Debian 9.9 2019-08-03 4GB SD IoT *( >> https://beagleboard.org/latest-images). I want to integrate it with >> Sim900a GSM module. But I can't get the UART working. I've connected the >> pins P9.24 (UART1 TX) to RX of the module, P9.26 (UART1 RX) to TX of the >> module, and P9.2 (DGND) to Gnd of the module. Also I've configured the pins >> to work as UART by using sudo config-pin P9.24 uart >> >> I've tried other UARTs also but no luck. Any help please ? >> > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/d5616909-97bf-4440-ba0e-6980a9462ff6%40googlegroups.com.
