• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 97 subscribers
  • Views 305 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

agetty on ttyO1, why doesn't work ?

Jorge Ventura
Prodigy 210 points

I am trying to use the ttyO1 with agetty but for any reason, it doesn't work. The hardware I have attached to Rx1 and Tx1 is the busPirate working as serial bridge.

My configuration for the pads are:

root@beaglebone:~# cat /sys/kernel/debug/omap_mux/uart1_txd
name: uart1_txd.uart1_txd (0x44e10984/0x984 = 0x0000), b NA, t NA
mode: OMAP_PIN_OUTPUT | OMAP_MUX_MODE0
signals: uart1_txd | mmc2_sdwp | d_can1_rx | i2c1_scl | NA | pr1_uart0_txd_mux1 | NA | gpio0_15


root@beaglebone:~# cat /sys/kernel/debug/omap_mux/uart1_rxd
name: uart1_rxd.uart1_rxd (0x44e10980/0x980 = 0x0030), b NA, t NA
mode: OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0
signals: uart1_rxd | mmc1_sdwp | d_can1_tx | i2c1_sda | NA | pr1_uart0_rxd_mux1 | NA | gpio0_14

I think that in the perspective of pin mux it seems to be correct.

Any help or suggestion is welcome.

  • 0
    Prodigy 210 points

    Do I need to implement hardware flow control ?

    This is my pin configuration but my DTE is not implementing the hfc.

    root@beaglebone:~# cat /sys/kernel/debug/omap_mux/uart1_rtsn
    name: uart1_rtsn.uart1_rtsn (0x44e1097c/0x97c = 0x0070), b NA, t NA
    mode: OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0
    signals: uart1_rtsn | NA | d_can0_rx | i2c2_scl | spi1_cs1 | NA | NA | gpio0_13


    root@beaglebone:~# cat /sys/kernel/debug/omap_mux/uart1_ctsn
    name: uart1_ctsn.uart1_ctsn (0x44e10978/0x978 = 0x0050), b NA, t NA
    mode: OMAP_PIN_OUTPUT | OMAP_MUX_MODE0
    signals: uart1_ctsn | NA | d_can0_tx | i2c2_sda | spi1_cs0 | NA | NA | gpio0_12