From 891113678c0498298bb82a2849e7d2bd87138c92 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juraj=20Andr=C3=A1ssy?= <jandrassy@users.noreply.github.com>
Date: Sun, 18 Mar 2018 05:53:54 +0100
Subject: [PATCH] SPISlave.end() added (#4248)

* Change argument to Esp.deepSleep from uint32 to uint64 to match SDK, add deepSleepMax based on the cali_proc function per SDK

* SPISlave.end() added

* Nameoftherose patch for Issue #2435 (#4256)

* WiFiTelnetToSerial Example - Minor Issues #2435

* WiFiTelnetToSerial Example - Minor Issues #2435

Patch to rectify issue #2435

* Check that pins needed by Wire are defined at compile-time (#4261)
---
 libraries/SPISlave/src/SPISlave.cpp |  8 ++++++++
 libraries/SPISlave/src/SPISlave.h   |  1 +
 libraries/SPISlave/src/hspi_slave.c | 17 +++++++++++++++++
 libraries/SPISlave/src/hspi_slave.h |  3 +++
 4 files changed, 29 insertions(+)

diff --git a/libraries/SPISlave/src/SPISlave.cpp b/libraries/SPISlave/src/SPISlave.cpp
index bc03e4b3f6..a88915b518 100644
--- a/libraries/SPISlave/src/SPISlave.cpp
+++ b/libraries/SPISlave/src/SPISlave.cpp
@@ -72,6 +72,14 @@ void SPISlaveClass::begin()
     hspi_slave_onStatusSent(&_s_status_tx);
     hspi_slave_begin(4, this);
 }
+void SPISlaveClass::end()
+{
+    hspi_slave_onData(nullptr);
+    hspi_slave_onDataSent(nullptr);
+    hspi_slave_onStatus(nullptr);
+    hspi_slave_onStatusSent(nullptr);
+    hspi_slave_end();
+}
 void SPISlaveClass::setData(uint8_t * data, size_t len)
 {
     if(len > 32) {
diff --git a/libraries/SPISlave/src/SPISlave.h b/libraries/SPISlave/src/SPISlave.h
index 92936c9896..a52495cf9c 100644
--- a/libraries/SPISlave/src/SPISlave.h
+++ b/libraries/SPISlave/src/SPISlave.h
@@ -52,6 +52,7 @@ class SPISlaveClass
     {}
     ~SPISlaveClass() {}
     void begin();
+    void end();
     void setData(uint8_t * data, size_t len);
     void setData(const char * data)
     {
diff --git a/libraries/SPISlave/src/hspi_slave.c b/libraries/SPISlave/src/hspi_slave.c
index ce06e99f7b..66199b4070 100644
--- a/libraries/SPISlave/src/hspi_slave.c
+++ b/libraries/SPISlave/src/hspi_slave.c
@@ -97,6 +97,23 @@ void hspi_slave_begin(uint8_t status_len, void * arg)
     ETS_SPI_INTR_ENABLE();
 }
 
+void hspi_slave_end()
+{
+  ETS_SPI_INTR_DISABLE();
+  ETS_SPI_INTR_ATTACH(NULL, NULL);
+
+  pinMode(SS, INPUT);
+  pinMode(SCK, INPUT);
+  pinMode(MISO, INPUT);
+  pinMode(MOSI, INPUT);
+
+  // defaults
+  SPI1S = 0;
+  SPI1U = SPIUSSE | SPIUCOMMAND;
+  SPI1S1 = 0;
+  SPI1P = B110;
+}
+
 void hspi_slave_setStatus(uint32_t status)
 {
     SPI1WS = status;
diff --git a/libraries/SPISlave/src/hspi_slave.h b/libraries/SPISlave/src/hspi_slave.h
index 55eeb76333..783c4b4a43 100644
--- a/libraries/SPISlave/src/hspi_slave.h
+++ b/libraries/SPISlave/src/hspi_slave.h
@@ -26,6 +26,9 @@
 //Start SPI SLave
 void hspi_slave_begin(uint8_t status_len, void * arg);
 
+//End SPI SLave
+void hspi_slave_end();
+
 //set the status register so the master can read it
 void hspi_slave_setStatus(uint32_t status);