How to enable GPS?
Gianmaria Iaculo
Hello,
I'm porting GPS HAL on android 4.4. Tha's what I've done till now.
1) I started with freerunner_gps.c cause it seem the simplest solution, and it clearly works with a serial nmea port, wich is right my case. I've a ttyUSB1 wich produces just NMEA sentences.
2) I've created a directory:
android/hardware/libhardware_legacy/gps
and placed freerunner_gps.c , a link to referenced gps.h pointing at
android/hardware/libhardware/include/hardware/gps.h
and created an Android.mk so simple:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
gps_freerunner.c
LOCAL_MODULE := libgps.telit
LOCAL_SHARED_LIBRARIES := \
libutils \
libcutils \
libdl \
libc
include $(BUILD_SHARED_LIBRARY) |
it produces a libpgs.telit.so in output folder /system/lib
3) I added to my BoardConfig.mk the following:
BOARD_GPS_LIBRARIES := libgps.telit
4) in my build.prop i added this line ro.kernel.android.gps=/dev/ttyUSB1
Where USB1 is a working serial that produces NMEA.
After this, i checked if everything on board is ok, all files are in place. But I absolutely cant see any debug line or initialization string.
It seems I have to do something else to enable the GPS part.. Android at moment is copletly ignoring this hardware.
Any suggest?
Regards,
Gianmaria
