Add --pin arg to example

Now example can be ran as follows:
peripheralmanager_example --pin=IO18

This allows for easier testing of GPIO pins

BUG: 26778811
Change-Id: I713630ad14fd575bd28d880c94cb1a8ea5152361
TEST: All the gpio pins on edison work.

1 files changed, 9 insertions, 2 deletions

diff --git a/example/peripheralmanager_example.cc b/example/peripheralmanager_example.cc
index 4348baf..136e0b9 100644
--- a/example/peripheralmanager_example.cc
+++ b/example/peripheralmanager_example.cc
@@ -29,10 +29,17 @@
 #include <peripheralmanager/peripheral_manager_client.h>
 
 int main(int argc, char* argv[]) {
+  DEFINE_string(pin, "", "Pin to toggle");
   brillo::FlagHelper::Init(argc, argv, "Example PeripheralManager client.");
   logging::InitLogging(logging::LoggingSettings());
   android::BinderWrapper::Create();
 
+  std::string pin_name = "IO13";
+  if (!FLAGS_pin.empty())
+    pin_name = FLAGS_pin;
+
+  LOG(INFO) << "Toggling Pin " << pin_name;
+
   // Get a client to the PeripheralManager.
   BPeripheralManagerClient* client = BPeripheralManagerClient_new();
 
@@ -41,9 +48,9 @@ int main(int argc, char* argv[]) {
     return 1;
   }
 
-  // Open GPIO pin IO13.
+  // Open GPIO pin.
   BGpio* my_gpio;
-  if (BPeripheralManagerClient_openGpio(client, "IO13", &my_gpio) !=
+  if (BPeripheralManagerClient_openGpio(client, pin_name.c_str(), &my_gpio) !=
       PERIPHERAL_IO_OK) {
     LOG(ERROR) << "Failed to open Gpio";
     return 1;