From 2e2fc563e2b6598e7887b867878022aa2965e1e5 Mon Sep 17 00:00:00 2001
From: Mike <mike@sillyhouse.net>
Date: Mon, 11 Feb 2019 10:50:42 +0000
Subject: [PATCH] Put `HardwareSerial` interrupt callback code in IRAM (#1610)

Reverted to regular static callback handler.
---
 Sming/SmingCore/HardwareSerial.cpp | 17 +++++++++--------
 Sming/SmingCore/HardwareSerial.h   |  3 ++-
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/Sming/SmingCore/HardwareSerial.cpp b/Sming/SmingCore/HardwareSerial.cpp
index a217703ea2..28e113dd36 100644
--- a/Sming/SmingCore/HardwareSerial.cpp
+++ b/Sming/SmingCore/HardwareSerial.cpp
@@ -156,6 +156,14 @@ void HardwareSerial::callbackHandler(uint32_t status)
 	}
 }
 
+void HardwareSerial::staticCallbackHandler(uart_t* uart, uint32_t status)
+{
+	auto serial = reinterpret_cast<HardwareSerial*>(uart_get_callback_param(uart));
+	if(serial) {
+		serial->callbackHandler(status);
+	}
+}
+
 bool HardwareSerial::updateUartCallback()
 {
 	if(uart == nullptr) {
@@ -167,14 +175,7 @@ bool HardwareSerial::updateUartCallback()
 #else
 	if(HWSDelegate || transmitComplete) {
 #endif
-		setUartCallback(
-			[](uart_t* uart, uint32_t status) {
-				auto serial = reinterpret_cast<HardwareSerial*>(uart_get_callback_param(uart));
-				if(serial) {
-					serial->callbackHandler(status);
-				}
-			},
-			this);
+		setUartCallback(staticCallbackHandler, this);
 		return true;
 	} else {
 		setUartCallback(nullptr, nullptr);
diff --git a/Sming/SmingCore/HardwareSerial.h b/Sming/SmingCore/HardwareSerial.h
index 5767e44e60..14093306dc 100644
--- a/Sming/SmingCore/HardwareSerial.h
+++ b/Sming/SmingCore/HardwareSerial.h
@@ -419,10 +419,11 @@ class HardwareSerial : public Stream
 	size_t rxSize = DEFAULT_RX_BUFFER_SIZE;
 
 	/**
-	 * @brief  Interrupt handler for UART0 receive events
+	 * @brief Serial interrupt handler, called by serial driver
 	 * @param uart_t* pointer to UART object
 	 * @param status UART status flags indicating cause(s) of interrupt
 	 */
+	static void IRAM_ATTR staticCallbackHandler(uart_t* uart, uint32_t status);
 	void IRAM_ATTR callbackHandler(uint32_t status);
 
 	/**