From 17060ad77d8ae5f606cbd2f0bc473b1357feaf9c Mon Sep 17 00:00:00 2001
From: Holger Fleischmann <holgflei@gmail.com>
Date: Fri, 13 Sep 2019 19:16:11 +0200
Subject: [PATCH] travis support

---
 .gitignore          |  3 ++-
 README.md           |  4 +++-
 src/credentials.cpp | 13 +++++++++++++
 3 files changed, 18 insertions(+), 2 deletions(-)
 create mode 100644 src/credentials.cpp

diff --git a/.gitignore b/.gitignore
index f96e839..3c4b19a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
+.pio
 .pioenvs
 .piolibdeps
 .vscode
-credentials.cpp
+secret_*
diff --git a/README.md b/README.md
index dd48ca1..c3bfb78 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+[![Build Status](https://travis-ci.org/grillbaer/esp32-geiger-counter.svg?branch=master)](https://travis-ci.org/grillbaer/esp32-geiger-counter)
+
 # IoT Geiger Counter with ESP32, OLED Display and Thingspeak Channel
 
 - Measures radioactive gamma and beta radiation with quite good resolution at the typical low levels of the natural radiation (due to the big STS-6 tube)
@@ -26,4 +28,4 @@ Feel free to use this project as a base for your own projects AT YOUR OWN RISK!
 - [PlatformIO VSCode project](https://github.com/platformio/platformio-vscode-ide) using [Arduino](https://github.com/arduino/Arduino) library, [Espressif ESP-IDF](https://github.com/espressif/esp-idf) for sleep functions and [U8g2](https://github.com/olikraus/u8g2) for display output
 - Low-power mode uses light sleep, a wake-up for each signal pulse change and a wake-up every 1000 ms to update pulse statistics and OLED. This results in about 90% sleep. Could be improved using deep sleep and ULP. However, light sleep is already quite good and much easier.
 - WiFi mode uses no sleep and simple interrupts for pulse counting. Pulse statistics and OLED are updated every 1000 ms, data is sent to thingspeak every 60 s.
-- Credentials (WiFi SSID, password, thingspeak channel key) are only declared in `credentials.h` and must be defined in a `credentials.cpp`
+- Credentials (WiFi SSID, password, thingspeak channel key) are declared in `credentials.h` and defined with dummy values in `credentials.cpp`. Define them in a sibling file named `secret_credentials` (which is never committed) and uncomment its include in `credentials.cpp`
diff --git a/src/credentials.cpp b/src/credentials.cpp
new file mode 100644
index 0000000..c02b5de
--- /dev/null
+++ b/src/credentials.cpp
@@ -0,0 +1,13 @@
+#include "credentials.h"
+
+// keep secret credentials in an external file that is never committed:
+// #include "secret_credentials"
+
+#ifndef _SECRET_CREDENTIALS
+
+// use dummy credentials to make it compilable without secrets
+const char *wifiSsid = "unset-wifi-ssid";
+const char *wifiPassword = "unset-password";
+const char *thingspeakApiKey = "unset-thinkspeak-api-key";
+
+#endif