cmd: gpio: Correct do_gpio() return value
Use the correct return value in function do_gpio() and update
commands documentation with the return values from command_ret_t enum.
CMD_RET_SUCCESS is returned on command success and CMD_RET_FAILURE is
returned on command failure.
The command was returning the pin value, which caused confusion when
debugging (#define DEBUG).
Signed-off-by: Luka Kovacic <luka.kovacic@sartura.hr>
Tested-by: Robert Marko <robert.marko@sartura.hr>
diff --git a/doc/README.commands b/doc/README.commands
index e03eb44..4e9e809 100644
--- a/doc/README.commands
+++ b/doc/README.commands
@@ -83,9 +83,9 @@
Allowable return value are:
-CMD_SUCCESS The command was successfully executed.
+CMD_RET_SUCCESS The command was successfully executed.
-CMD_FAILURE The command failed.
+CMD_RET_FAILURE The command failed.
CMD_RET_USAGE The command was called with invalid parameters. This value
leads to the display of the usage string.