From 5e5417b45695411ea8d5cf96c15cbc459614fc1e Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Wed, 27 Jul 2016 14:03:06 -0700
Subject: [PATCH] Touch: Default and active calibration API of sorts.

---
 firmware/application/touch.cpp | 20 ++++++++++++++++++++
 firmware/application/touch.hpp |  4 ++++
 2 files changed, 24 insertions(+)

diff --git a/firmware/application/touch.cpp b/firmware/application/touch.cpp
index 13efb236..2e01803e 100644
--- a/firmware/application/touch.cpp
+++ b/firmware/application/touch.cpp
@@ -74,6 +74,26 @@ ui::Point Calibration::translate(const DigitizerPoint& p) const {
 	};
 }
 
+static const Calibration _default_calibration {
+	/* Values derived from one PortaPack H1 unit. */
+	{ { { 256, 731 }, { 880, 432 }, { 568, 146 } } },
+	{ { {  32,  48 }, { 208, 168 }, { 120, 288 } } }
+};
+
+static Calibration _calibration = _default_calibration;
+
+void set_calibration(const Calibration& value) {
+	_calibration = value;
+}
+
+const Calibration& calibration() {
+	return _calibration;
+}
+
+const Calibration& default_calibration() {
+	return _default_calibration;
+}
+
 void Manager::feed(const Frame& frame) {
 	// touch_debounce.feed(touch_raw);
 	const auto touch_raw = frame.touch;
diff --git a/firmware/application/touch.hpp b/firmware/application/touch.hpp
index e4b0f363..cf7ea62b 100644
--- a/firmware/application/touch.hpp
+++ b/firmware/application/touch.hpp
@@ -149,6 +149,10 @@ private:
 	int32_t f;
 };
 
+void set_calibration(const Calibration& calibration);
+const Calibration& calibration();
+const Calibration& default_calibration();
+
 template<size_t N>
 class Filter {
 public: