From d8b0575d2fee773b21db798b032341a763fd7cde Mon Sep 17 00:00:00 2001
From: Jeroen Domburg <jeroen@spritesmods.com>
Date: Fri, 10 Oct 2014 17:34:04 +0200
Subject: [PATCH] Added reset-to-ap-mode button functionality

---
 user/io.c | 32 +++++++++++++++++++++++++++++---
 1 file changed, 29 insertions(+), 3 deletions(-)

diff --git a/user/io.c b/user/io.c
index 16374cc..e89689f 100644
--- a/user/io.c
+++ b/user/io.c
@@ -5,14 +5,40 @@
 #include "osapi.h"
 #include "gpio.h"
 
+
+#define LEDGPIO 2
+#define BTNGPIO 0
+
+static ETSTimer resetBtntimer;
+
 void ICACHE_FLASH_ATTR ioLed(int ena) {
+	//gpio_output_set is overkill. ToDo: use better mactos
 	if (ena) {
-		gpio_output_set(BIT2, 0, BIT2, 0);
+		gpio_output_set((1<<LEDGPIO), 0, (1<<LEDGPIO), 0);
+	} else {
+		gpio_output_set(0, (1<<LEDGPIO), (1<<LEDGPIO), 0);
+	}
+}
+
+static void ICACHE_FLASH_ATTR resetBtnTimerCb(void) {
+	static int resetCnt=0;
+	if (!GPIO_INPUT_GET(BTNGPIO)) {
+		resetCnt++;
 	} else {
-		gpio_output_set(0, BIT2, BIT2, 0);
+		if (resetCnt>=6) { //3 sec pressed
+			wifi_set_opmode(0x3); //reset to AP+STA mode
+			os_printf("Reset to AP mode. Restarting system...\n");
+			system_restart();
+		}
+		resetCnt=0;
 	}
 }
 
 void ioInit() {
 	PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO2_U, FUNC_GPIO2);
-}
\ No newline at end of file
+	PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO0_U, FUNC_GPIO0);
+	gpio_output_set(0, 0, (1<<LEDGPIO), (1<<BTNGPIO));
+	os_timer_disarm(&resetBtntimer);
+	os_timer_setfn(&resetBtntimer, resetBtnTimerCb, NULL);
+	os_timer_arm(&resetBtntimer, 500, 1);
+}