i'm trying to port openwrt in TCL HH41V router
the original firmware of this router is based on an old version of openwrt
with fail safe mode with uart i get:
root@(none):/tmp# ./gpio-test.sh
[GPIO1] Trying value 0
[GPIO1] Trying value 1
[GPIO2] Trying value 0
[GPIO2] Trying value 1
[GPIO4] Trying value 0
[GPIO4] Trying value 1
[GPIO5] Trying value 0
[GPIO5] Trying value 1
[GPIO6] Trying value 0
[GPIO6] Trying value 1
[GPIO7] Trying value 0
[GPIO7] Trying value 1
[GPIO8] Trying value 0
[GPIO8] Trying value 1
[GPIO9] Trying value 0
[GPIO9] Trying value 1
[GPIO10] Trying value 0
[GPIO10] Trying value 1
[GPIO15] Trying value 0
[GPIO15] Trying value 1
root@(none):/tmp#
and no led is lighted in all the test
and with ssh after the router booted normally i get:
root@flybox:/tmp# ./gpio-test.sh
ash: write error: Device or resource busy
ash: write error: Device or resource busy
[GPIO1] Trying value 0
[GPIO1] Trying value 1
[GPIO2] Trying value 0
[GPIO2] Trying value 1
ash: write error: Device or resource busy
[GPIO4] Trying value 0
[GPIO4] Trying value 1
[GPIO5] Trying value 0
[GPIO5] Trying value 1
[GPIO6] Trying value 0
[GPIO6] Trying value 1
[GPIO7] Trying value 0
[GPIO7] Trying value 1
[GPIO8] Trying value 0
[GPIO8] Trying value 1
[GPIO9] Trying value 0
[GPIO9] Trying value 1
[GPIO10] Trying value 0
[GPIO10] Trying value 1
ash: write error: Device or resource busy
ash: write error: Device or resource busy
ash: write error: Device or resource busy
ash: write error: Device or resource busy
[GPIO15] Trying value 0
[GPIO15] Trying value 1
ash: write error: Device or resource busy
ash: write error: Device or resource busy
that means that the gpio used are: 0 3 11 12 13 14 16
so, how can i test them?