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--- en:c1_enhancement_gpio40_on_android [2015/05/07 14:06]
odroid
+++ en:c1_enhancement_gpio40_on_android [2016/04/25 09:27]
codewalker
@@ Line 1: / Line 1: @@
+==== Having GPIO functions on Android ====
+** You must install the Android release V1.5 or higher to access the 40pin GPIO properly.**
+This process explains how to make an Android app which can access IO ports.\\
+You need to install Google Android SDK/NDK on your host PC first to start below steps.
+Insert this line into your ~/.bashrc file.
+<code>
+export NDK_PATH=/home/xxx/android-ndk-r10d
+</code>
+. Download the wiringPi library and example App source code.
+[[https://github.com/codewalkerster/example-wiringPi]]
+<code>
+$ git clone https://github.com/codewalkerster/example-wiringPi -b odroidc
+</code>
+. Build a JNI library
+<code>
+$ cd example-wiringPi
+$ cd jni
+$ ndk-build
+Android NDK: WARNING: APP_PLATFORM android-19 is larger than android:minSdkVersion 16 in /media/codewalker/92fc070a-3bc1-43e0-af27-03d08ba9dd3e/home/codewalker/workspace/example-wiringPi/AndroidManifest.xml
+[armeabi] Compile thumb  : wiringPi <= wiringPi.c
+/media/codewalker/92fc070a-3bc1-43e0-af27-03d08ba9dd3e/home/codewalker/workspace/example-wiringPi/jni/wiringPi/wiringPi.c:147:0: warning: "PAGE_SIZE" redefined [enabled by default]
+ #define PAGE_SIZE   (4*1024)
+ ^
+In file included from /home/codewalker/projects/android-ndk-r10d/platforms/android-21/arch-arm/usr/include/signal.h:34:0,
+                 from /home/codewalker/projects/android-ndk-r10d/platforms/android-21/arch-arm/usr/include/poll.h:34,
+                 from /media/codewalker/92fc070a-3bc1-43e0-af27-03d08ba9dd3e/home/codewalker/workspace/example-wiringPi/jni/wiringPi/wiringPi.c:59:
+/home/codewalker/projects/android-ndk-r10d/platforms/android-21/arch-arm/usr/include/limits.h:119:0: note: this is the location of the previous definition
+ #define PAGE_SIZE 4096
+ ^
+/media/codewalker/92fc070a-3bc1-43e0-af27-03d08ba9dd3e/home/codewalker/workspace/example-wiringPi/jni/wiringPi/wiringPi.c: In function 'interruptHandler':
+/media/codewalker/92fc070a-3bc1-43e0-af27-03d08ba9dd3e/home/codewalker/workspace/example-wiringPi/jni/wiringPi/wiringPi.c:1865:7: warning: return makes pointer from integer without a cast [enabled by default]
+       return wiringPiFailure (WPI_FATAL, "wiringPiISR: wiringPi has not been initialised. Unable to continue.\n") ;
+       ^
+[armeabi] Compile thumb  : wiringPi <= wiringShift.c
+[armeabi] Compile thumb  : wiringPi <= piHiPri.c
+[armeabi] Compile thumb  : wiringPi <= piThread.c
+[armeabi] Compile thumb  : wiringPi <= wiringPiSPI.c
+[armeabi] Compile thumb  : wiringPi <= wiringPiI2C.c
+[armeabi] Compile thumb  : wiringPi <= softPwm.c
+[armeabi] Compile thumb  : wiringPi <= softTone.c
+[armeabi] Compile thumb  : wiringPi <= mcp23008.c
+[armeabi] Compile thumb  : wiringPi <= mcp23016.c
+[armeabi] Compile thumb  : wiringPi <= mcp23017.c
+[armeabi] Compile thumb  : wiringPi <= mcp23s08.c
+[armeabi] Compile thumb  : wiringPi <= mcp23s17.c
+[armeabi] Compile thumb  : wiringPi <= sr595.c
+[armeabi] Compile thumb  : wiringPi <= pcf8574.c
+[armeabi] Compile thumb  : wiringPi <= pcf8591.c
+[armeabi] Compile thumb  : wiringPi <= mcp3002.c
+[armeabi] Compile thumb  : wiringPi <= mcp3004.c
+[armeabi] Compile thumb  : wiringPi <= mcp4802.c
+[armeabi] Compile thumb  : wiringPi <= mcp3422.c
+[armeabi] Compile thumb  : wiringPi <= max31855.c
+[armeabi] Compile thumb  : wiringPi <= max5322.c
+[armeabi] Compile thumb  : wiringPi <= sn3218.c
+[armeabi] SharedLibrary  : libwiringPi.so
+[armeabi] Install        : libwiringPi.so => libs/armeabi/libwiringPi.so
+[armeabi] Compile thumb  : wiringPiDev <= ds1302.c
+[armeabi] Compile thumb  : wiringPiDev <= maxdetect.c
+[armeabi] Compile thumb  : wiringPiDev <= piNes.c
+[armeabi] Compile thumb  : wiringPiDev <= gertboard.c
+[armeabi] Compile thumb  : wiringPiDev <= piFace.c
+[armeabi] Compile thumb  : wiringPiDev <= lcd128x64.c
+[armeabi] Compile thumb  : wiringPiDev <= lcd.c
+[armeabi] Compile thumb  : wiringPiDev <= piGlow.c
+[armeabi] SharedLibrary  : libwiringPiDev.so
+[armeabi] Install        : libwiringPiDev.so => libs/armeabi/libwiringPiDev.so
+[armeabi] Compile thumb  : wpi_android <= wpi_android.c
+[armeabi] SharedLibrary  : libwpi_android.so
+[armeabi] Install        : libwpi_android.so => libs/armeabi/libwpi_android.so
+[~/workspace/example-wiringPi/jni]$
+</code>
+. Import project * build it on the Android SDK.
+== ADC ===
+{{http://dn.odroid.com/homebackup/android_wiringPi_ADC.png?600|}}
+[[https://www.youtube.com/watch?v=zyfULOkj0Vw]]
+== PWM ===
+{{http://dn.odroid.com/homebackup/android_wiringPi_PWM.png?600|}}
+== I2C ===
+{{http://dn.odroid.com/homebackup/android_wiringPi_I2C.png?600|}}
+== UART ===
+{{http://dn.odroid.com/homebackup/android_wiringPi_UART.png?600|}}
+== 1 Wire ===
+{{http://dn.odroid.com/homebackup/android_wiringPi_1wire.png?600|}}