nRF Connect SDK v1.7.1 sample \ncs\v1.7.1\nrf\samples\bluetooth\mesh\light_ctrl\
Long transition times fail due to a 16bit value which needs to be 32bit (I believe, can't see a reason why it needs to be 16).
The following code in model_handler.c is used to store the lightness context - rem_time holds the remaining time in millisec. Being a 16bit value, this is < 60sec so long transition times fail and are pulled to their target level when the remaining time prematurely reaches zero.
struct lightness_ctx {
struct bt_mesh_lightness_srv lightness_srv;
struct k_work_delayable per_work;
uint16_t target_lvl;
uint16_t current_lvl;
uint32_t time_per;
uint16_t rem_time;
};
Changing to uint32_t rem_time fixes the issue (the lower SDK mesh models use 32bit for their remaining time variables).
