From 180e1cb7b63dc1d911255c6ab5bb55e40efd4248 Mon Sep 17 00:00:00 2001
From: Dominic Clifton <me@dominicclifton.name>
Date: Wed, 7 Oct 2015 01:08:31 +0100
Subject: [PATCH] SPRacingF3Mini - Quick hack to allow configuration to be
 reset when holding buttons A and B down for 5 seconds when powering on.

---
 src/main/main.c                         | 35 +++++++++++++++++++++++++
 src/main/target/SPRACINGF3MINI/target.h | 10 ++++---
 2 files changed, 42 insertions(+), 3 deletions(-)

diff --git a/src/main/main.c b/src/main/main.c
index 008713585..09a327a20 100644
--- a/src/main/main.c
+++ b/src/main/main.c
@@ -193,6 +193,41 @@ void init(void)
     ledInit(false);
 #endif
 
+#ifdef SPRACINGF3MINI
+    gpio_config_t buttonAGpioConfig = {
+        BUTTON_A_PIN,
+        Mode_IPU,
+        Speed_2MHz
+    };
+    gpioInit(BUTTON_A_PORT, &buttonAGpioConfig);
+
+    gpio_config_t buttonBGpioConfig = {
+        BUTTON_B_PIN,
+        Mode_IPU,
+        Speed_2MHz
+    };
+    gpioInit(BUTTON_B_PORT, &buttonBGpioConfig);
+
+    // Check status of bind plug and exit if not active
+    delayMicroseconds(10);  // allow GPIO configuration to settle
+
+    if (!isMPUSoftReset()) {
+        uint8_t secondsRemaining = 5;
+        bool bothButtonsHeld;
+        do {
+            bothButtonsHeld = !digitalIn(BUTTON_A_PORT, BUTTON_A_PIN) && !digitalIn(BUTTON_B_PORT, BUTTON_B_PIN);
+            if (bothButtonsHeld) {
+                if (--secondsRemaining == 0) {
+                    resetEEPROM();
+                    systemReset();
+                }
+                delay(1000);
+                LED0_TOGGLE;
+            }
+        } while (bothButtonsHeld);
+    }
+#endif
+
 #ifdef SPEKTRUM_BIND
     if (feature(FEATURE_RX_SERIAL)) {
         switch (masterConfig.rxConfig.serialrx_provider) {
diff --git a/src/main/target/SPRACINGF3MINI/target.h b/src/main/target/SPRACINGF3MINI/target.h
index f34affbc5..767800a0e 100644
--- a/src/main/target/SPRACINGF3MINI/target.h
+++ b/src/main/target/SPRACINGF3MINI/target.h
@@ -180,12 +180,16 @@
 #define USE_SERVOS
 #define USE_CLI
 
+#define BUTTON_A_PORT  GPIOB
+#define BUTTON_A_PIN   Pin_1
+#define BUTTON_B_PORT  GPIOB
+#define BUTTON_B_PIN   Pin_0
+
 #define SPEKTRUM_BIND
 // USART3,
 #define BIND_PORT  GPIOB
 #define BIND_PIN   Pin_11
 
 #define HARDWARE_BIND_PLUG
-// Hardware bind plug at PB1
-#define BINDPLUG_PORT  GPIOB
-#define BINDPLUG_PIN   Pin_1
+#define BINDPLUG_PORT  BUTTON_B_PORT
+#define BINDPLUG_PIN   BUTTON_B_PIN