Hi Robert, Thanks for the advice I will give it a try.
But I still cannot get UART1 working, only UART4. I have changed out the board for another identical one (in case I have blown up UART1 somehow) and started again with a new lxqt image. I just have a hard loop between TX and RX so this is not a baud/ framing issue. Here's some output: root@beaglebone:~# cat /sys/devices/platform/bone_capemgr/slots 0: PF---- -1 1: PF---- -1 2: PF---- -1 3: PF---- -1 4: P-O-L- 0 Override Board Name,00A0,Override Manuf,BB-UART1 5: P-O-L- 1 Override Board Name,00A0,Override Manuf,BB-UART4 root@beaglebone:~# >From dmesg: [ 1643.096707] bone_capemgr bone_capemgr: part_number 'BB-UART1', version 'N/A' [ 1643.096758] bone_capemgr bone_capemgr: slot #4: override [ 1643.096785] bone_capemgr bone_capemgr: Using override eeprom data at slot 4 [ 1643.096813] bone_capemgr bone_capemgr: slot #4: 'Override Board Name,00A0,Override Manuf,BB-UART1' [ 1643.108422] bone_capemgr bone_capemgr: slot #4: dtbo 'BB-UART1-00A0.dtbo' loaded; overlay id #0 [ 1743.389923] bone_capemgr bone_capemgr: part_number 'BB-UART4', version 'N/A' [ 1743.389975] bone_capemgr bone_capemgr: slot #5: override [ 1743.390001] bone_capemgr bone_capemgr: Using override eeprom data at slot 5 [ 1743.390030] bone_capemgr bone_capemgr: slot #5: 'Override Board Name,00A0,Override Manuf,BB-UART4' [ 1743.415383] 481a8000.serial: ttyS4 at MMIO 0x481a8000 (irq = 201, base_baud = 3000000) is a 8250 [ 1743.416366] bone_capemgr bone_capemgr: slot #5: dtbo 'BB-UART4-00A0.dtbo' loaded; overlay id #1 Note there is no line: 481a8000.serial: ttyS4 at MMIO 0x481a8000 (irq = 201, base_baud = 3000000) is a 8250 for ttyS1. Any suggestions? Also, what is the latest Wheezy or Angstrom version where all the UARTs work out of the box?. I could at least use that to test that the hardware is working. Thanks. -- 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]. For more options, visit https://groups.google.com/d/optout.
