Add initial Brillo LED sample

Addressed review comments

Change-Id: I592890434704952a13b3ff4a189760ff5a426984

6 files changed, 73 insertions, 0 deletions

diff --git a/brillo_leds/AndroidProducts.mk b/brillo_leds/AndroidProducts.mk
new file mode 100644
index 0000000..7f9fdb1
--- /dev/null
+++ b/brillo_leds/AndroidProducts.mk
@@ -0,0 +1 @@
+PRODUCT_MAKEFILES := $(LOCAL_DIR)/brillo_leds.mk
diff --git a/brillo_leds/README b/brillo_leds/README
new file mode 100644
index 0000000..e0fe8ec
--- /dev/null
+++ b/brillo_leds/README
@@ -0,0 +1,23 @@
+README for Brillo LED sample
+
+This LED sample creates a service that can be run on Brillo Dragonboard. It animates LED 1 through LED 4.
+
+Once built, you can find the binary inside your AOSP tree at:
+
+out/target/product/dragonboard/symbols/system/bin/led_service
+
+Do the following to deploy the sample:
+
+ - adb root
+ - adb remount
+ - adb sync
+
+Do the following to run the sample on Dragonboard:
+
+ - adb shell
+ - /system/bin/led_service &
+ - logcat
+
+Note the last step shows logging info
+
+
diff --git a/brillo_leds/brillo_leds.mk b/brillo_leds/brillo_leds.mk
new file mode 100644
index 0000000..cc2b31e
--- /dev/null
+++ b/brillo_leds/brillo_leds.mk
@@ -0,0 +1,8 @@
+$(call inherit-product, device/generic/brillo/brillo_base.mk)
+
+PRODUCT_NAME := brillo_leds
+PRODUCT_BRAND := Brillo
+
+PRODUCT_DEVICE := dragonboard
+PRODUCT_PACKAGES += brillo_led_tool
+
diff --git a/brillo_leds/src/brillo_led_tool/Android.mk b/brillo_leds/src/brillo_led_tool/Android.mk
new file mode 100644
index 0000000..b9a1320
--- /dev/null
+++ b/brillo_leds/src/brillo_led_tool/Android.mk
@@ -0,0 +1,7 @@
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+LOCAL_MODULE := brillo_led_tool
+LOCAL_SRC_FILES := brillo_led_tool.cpp
+LOCAL_SHARED_LIBRARIES := libc libbase
+LOCAL_CFLAGS := -Werror
+include $(BUILD_EXECUTABLE)
diff --git a/brillo_leds/src/brillo_led_tool/brillo_led_tool.cpp b/brillo_leds/src/brillo_led_tool/brillo_led_tool.cpp
new file mode 100644
index 0000000..3f6845a
--- /dev/null
+++ b/brillo_leds/src/brillo_led_tool/brillo_led_tool.cpp
@@ -0,0 +1,33 @@
+#include <unistd.h>
+#include <base/logging.h>
+
+int main(int argc __unused, char **argv __unused) {
+  static const char* const leds[] = {
+    "/sys/class/leds/led1/brightness",
+    "/sys/class/leds/led2/brightness",
+    "/sys/class/leds/led3/brightness",
+    "/sys/class/leds/boot/brightness"
+  };
+
+  LOG(INFO) << "starting blinking LEDs";
+  int i = 0;
+  for(;;) {
+    FILE *fp;
+    fp = fopen(leds[i], "w");
+    if (fp == NULL) {
+      PLOG(ERROR) << "Error opening file";
+      return 0;
+    } else {
+      fputs("255", fp);
+      fseek(fp, 0, SEEK_SET);
+      sleep(1);
+      fputs("0", fp);
+      fclose(fp);
+      LOG(INFO) << "toggling LED " << i + 1 << " on/off";
+      i++;
+      i = i % 4;
+    }
+  }
+  LOG(INFO) << "exiting";
+  return 0;
+}
diff --git a/brillo_leds/vendorsetup.sh b/brillo_leds/vendorsetup.sh
new file mode 100644
index 0000000..ace4f2e
--- /dev/null
+++ b/brillo_leds/vendorsetup.sh
@@ -0,0 +1 @@
+add_lunch_combo brillo_leds-userdebug