diff --git a/esp32_component/esp-idf/components/pip/CMakeLists.txt b/esp32_component/esp-idf/components/pip/CMakeLists.txt
index 17ea1cde..0151c79b 100644
--- a/esp32_component/esp-idf/components/pip/CMakeLists.txt
+++ b/esp32_component/esp-idf/components/pip/CMakeLists.txt
@@ -18,7 +18,7 @@ set(COMPONENT_PRIV_REQUIRES pthread)
 register_component()
 set(PIP_FREERTOS ON)
 set(LIB OFF)
-include_directories(${IDF_INCLUDE_DIRECTORIES} ../newlib/platform_include ../libsodium/libsodium/src/libsodium/include ../libsodium/port_include)
+include_directories(${IDF_INCLUDE_DIRECTORIES} ../newlib/platform_include ../libsodium/libsodium/src/libsodium/include ../libsodium/port_include ../heap/include ../esp32/include ../spi_flash/include ../driver/include ../soc/include ../soc/esp32/include ../freertos/include)
 #message("IDF_COMPILE_DEFINITIONS = ${IDF_COMPILE_DEFINITIONS}")
 #message("IDF_INCLUDE_DIRECTORIES = ${IDF_INCLUDE_DIRECTORIES}")
 add_compile_options(${IDF_COMPILE_OPTIONS})
@@ -28,4 +28,4 @@ add_definitions(-DGCC_NOT_5_2_0=0)
 add_definitions(-DHAVE_CONFIG_H)
 add_subdirectory(pip)
 
-target_link_libraries(${COMPONENT_TARGET} pip)
\ No newline at end of file
+target_link_libraries(${COMPONENT_TARGET} pip)
diff --git a/main.cpp b/main.cpp
index d511753e..ef7fc6dd 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,7 +1,33 @@
 #include "pip.h"
 
+class A: public PIObject {
+	PIOBJECT(A)
+public:
+	A() {}
+	EVENT_HANDLER1(void, handlerA1, PIString, s) {piCout << "handlerA1 s" << s;}
+	EVENT_HANDLER1(void, handlerA1, float, f) {piCout << "handlerA1 f" << f;}
+	//uchar _[0x10];
+};
+
+
+class B: public PIObject {
+	PIOBJECT(B)
+public:
+	B() {}
+	EVENT1(eventB1, float, f)
+	EVENT1(eventB2, PIString, s)
+	//uchar _[0x20];
+};
 
 int main() {
+	A a;
+	B b;
+	CONNECTU(&b, eventB1, &a, handlerA1)
+	CONNECTU(&b, eventB2, &a, handlerA1)
+	a.dump();
+	b.dump();
+	b.eventB1(0.33);
+	b.eventB2("str");
 	/*PIByteArray msg = PIByteArray::fromHex("0110f0f00001020001");
 	PIByteArray src = PIByteArray::fromHex("836f");
 	ushort s; memcpy(&s, src.data(), 2);
@@ -9,9 +35,9 @@ int main() {
 	CRC_16 crc = CRC_16(0x8005, 0xFFFF, 0xFFFF, false);
 	piCout << PICoutManipulators::Hex << s;
 	piCout << PICoutManipulators::Hex << crc.calculate(msg);*/
-	PIIODevice * ser = PIIODevice::createFromFullPath("ser://COM3:9600:7:e:1 (wo,bwr)");
-	piCout << ser << ser->constructVariant() << ser->constructFullPath();
-	ser = PIIODevice::createFromVariant(ser->constructVariant());
-	piCout << ser << ser->constructVariant() << ser->constructFullPath();
+	//PIIODevice * ser = PIIODevice::createFromFullPath("ser://COM3:9600:7:e:1 (wo,bwr)");
+	//piCout << ser << ser->constructVariant() << ser->constructFullPath();
+	//ser = PIIODevice::createFromVariant(ser->constructVariant());
+	//piCout << ser << ser->constructVariant() << ser->constructFullPath();
 	return 0;
 }
diff --git a/src_main/core/piinit.cpp b/src_main/core/piinit.cpp
index 0209ad4f..ef1a5bf6 100644
--- a/src_main/core/piinit.cpp
+++ b/src_main/core/piinit.cpp
@@ -28,6 +28,9 @@
 #  include "pidir.h"
 #  include "piprocess.h"
 #endif
+#ifdef ESP_PLATFORM
+#  include "esp_system.h"
+#endif
 #ifdef WINDOWS
 #  include <winsock2.h>
 	extern FILETIME __pi_ftjan1970;
@@ -261,6 +264,14 @@ PIInit::PIInit() {
 		sinfo->architecture = uns.machine;
 	}
 #  endif
+#endif
+#ifdef ESP_PLATFORM
+	esp_chip_info_t chip_info;
+	esp_chip_info(&chip_info);
+	sinfo->processorsCount = chip_info.cores;
+	sinfo->architecture = "Xtensa LX6";
+	//printf("silicon revision %d, ", chip_info.revision);
+	sinfo->OS_version = esp_get_idf_version();
 #endif
 	sinfo->OS_name =
 #ifdef WINDOWS
diff --git a/src_main/core/pitime.cpp b/src_main/core/pitime.cpp
index d6d43a18..cc4fed1f 100755
--- a/src_main/core/pitime.cpp
+++ b/src_main/core/pitime.cpp
@@ -30,7 +30,10 @@
 //#  include <crt_externs.h>
    extern clock_serv_t __pi_mac_clock;
 #endif
-
+#ifdef FREERTOS
+#  include "freertos/FreeRTOS.h"
+#  include "freertos/task.h"
+#endif
 
 /*! \class PISystemTime
  * \brief System time
@@ -63,8 +66,12 @@ void piUSleep(int usecs) {
 	//printf("Sleep %d\n", usecs / 1000);
 	if (usecs > 0) Sleep(usecs / 1000);
 #else
+#  ifdef FREERTOS
+	vTaskDelay(usecs / 1000 / portTICK_PERIOD_MS);
+#  else
 	usecs -= PISystemTests::usleep_offset_us;
 	if (usecs > 0) usleep(usecs);
+#  endif
 #endif
 }
 
@@ -243,8 +250,18 @@ PISystemTime PISystemTime::current(bool precise_but_not_system) {
 	mach_timespec_t t_cur;
 	clock_get_time(__pi_mac_clock, &t_cur);
 #  else
+#    ifdef FREERTOS
+	timespec t_cur;
+	timeval tv;
+	tv.tv_sec = 0;
+	tv.tv_usec = 0;
+        gettimeofday(&tv, NULL);
+	t_cur.tv_sec = tv.tv_sec;
+	t_cur.tv_nsec = tv.tv_usec * 1000;
+#    else
 	timespec t_cur;
 	clock_gettime(0, &t_cur);
+#    endif
 #  endif
 	return PISystemTime(t_cur.tv_sec, t_cur.tv_nsec);
 #endif
diff --git a/src_main/core/pitime.h b/src_main/core/pitime.h
index 1c9bfaea..3ce9276c 100755
--- a/src_main/core/pitime.h
+++ b/src_main/core/pitime.h
@@ -25,13 +25,9 @@
 
 
 #include "pistring.h"
-#ifdef FREERTOS
-#  include "time.h"
-#else
-#  include <ctime>
-#  ifdef QNX
-#    include <time.h>
-#  endif
+#include <ctime>
+#ifdef QNX
+#  include <time.h>
 #endif
 //! \brief Sleep for "msecs" milliseconds
 PIP_EXPORT void msleep(int msecs);
diff --git a/src_main/io_devices/piiodevice.cpp b/src_main/io_devices/piiodevice.cpp
index 8f143357..73a2a1ed 100755
--- a/src_main/io_devices/piiodevice.cpp
+++ b/src_main/io_devices/piiodevice.cpp
@@ -168,7 +168,11 @@ void PIIODevice::_init() {
 	setOptions(0);
 	setReopenEnabled(true);
 	setReopenTimeout(1000);
+#ifdef FREERTOS
+	setThreadedReadBufferSize(512);
+#else
 	setThreadedReadBufferSize(4096);
+#endif
 	timer.setName("__S__reopen_timer");
 	write_thread.setName("__S__write_thread");
 	CONNECT2(void, void * , int, &timer, tickEvent, this, check_start);
@@ -251,7 +255,7 @@ void PIIODevice::run() {
 		return;
 	}
 	if (!thread_started_) {
-		piMSleep(5);
+		piMSleep(10);
 		//cout << "not started\n";
 		return;
 	}
diff --git a/src_main/piversion.h b/src_main/piversion.h
index 8d44bc39..2bdd3078 100644
--- a/src_main/piversion.h
+++ b/src_main/piversion.h
@@ -5,6 +5,6 @@
 #define PIP_VERSION_MAJOR      1
 #define PIP_VERSION_MINOR      9
 #define PIP_VERSION_REVISION   0
-#define PIP_VERSION_SUFFIX     "_alpha"
+#define PIP_VERSION_SUFFIX     "_alpha_2"
 
 #endif // PIVERSION_H
diff --git a/src_main/system/pisysteminfo.cpp b/src_main/system/pisysteminfo.cpp
index ff9574ce..2fb15ff3 100644
--- a/src_main/system/pisysteminfo.cpp
+++ b/src_main/system/pisysteminfo.cpp
@@ -19,6 +19,12 @@
 #include "pisysteminfo.h"
 #include "piincludes_p.h"
 
+#ifdef ESP_PLATFORM
+#  include "esp_heap_caps.h"
+#  include "esp_system.h"
+#  include "esp_spi_flash.h"
+#endif
+
 
 PISystemInfo::PISystemInfo() {
 	processorsCount = 1;
@@ -31,6 +37,36 @@ PISystemInfo * PISystemInfo::instance() {
 }
 
 
+ullong PISystemInfo::totalRAM() {
+#ifdef ESP_PLATFORM
+	multi_heap_info_t heap_info;
+	memset(&heap_info, 0, sizeof(multi_heap_info_t));
+	heap_caps_get_info(&heap_info, MALLOC_CAP_8BIT);
+	return heap_info.total_allocated_bytes + heap_info.total_free_bytes;
+#endif
+}
+
+
+ullong PISystemInfo::freeRAM() {
+#ifdef ESP_PLATFORM
+	multi_heap_info_t heap_info;
+	memset(&heap_info, 0, sizeof(multi_heap_info_t));
+	heap_caps_get_info(&heap_info, MALLOC_CAP_8BIT);
+	return heap_info.total_free_bytes;
+#endif
+}
+
+
+ullong PISystemInfo::usedRAM() {
+#ifdef ESP_PLATFORM
+        multi_heap_info_t heap_info;
+        memset(&heap_info, 0, sizeof(multi_heap_info_t));
+        heap_caps_get_info(&heap_info, MALLOC_CAP_8BIT);
+        return heap_info.total_allocated_bytes;
+#endif
+}
+
+
 PIStringList PISystemInfo::mountRoots() {
 	PIStringList ret;
 #ifdef WINDOWS
@@ -178,6 +214,14 @@ PIVector<PISystemInfo::MountInfo> PISystemInfo::mountInfo() {
 	}
 #  else
 #  endif
+#endif
+#ifdef ESP_PLATFORM
+	esp_chip_info_t chip_info;
+	esp_chip_info(&chip_info);
+	m.device = ((chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded SPI flash" : "external SPI flash");
+	m.space_all = spi_flash_get_chip_size();
+	m.mount_point = "/";
+	ret << m;
 #endif
 	cache = ret;
 	return ret;
diff --git a/src_main/system/pisysteminfo.h b/src_main/system/pisysteminfo.h
index ad691caa..86dc5659 100644
--- a/src_main/system/pisysteminfo.h
+++ b/src_main/system/pisysteminfo.h
@@ -38,6 +38,7 @@ public:
 	};
 
 	PIString ifconfigPath, execCommand, hostname, user, OS_name, OS_version, architecture;
+	ullong RAM_total, RAM_free;
 	PIDateTime execDateTime;
 	int processorsCount;
 	
@@ -45,6 +46,9 @@ public:
 	static PIVector<MountInfo> mountInfo();
 	
 	static PISystemInfo * instance();
+	static ullong totalRAM();
+	static ullong freeRAM();
+	static ullong usedRAM();
 	
 };
 
diff --git a/src_main/thread/pithread.cpp b/src_main/thread/pithread.cpp
index 37454e5a..d45dcd28 100755
--- a/src_main/thread/pithread.cpp
+++ b/src_main/thread/pithread.cpp
@@ -40,6 +40,12 @@ __THREAD_FUNC_RET__ thread_function_once(void * t) {PIThread::__thread_func_once
 #define REGISTER_THREAD(t) __PIThreadCollection::instance()->registerThread(t)
 #define UNREGISTER_THREAD(t) __PIThreadCollection::instance()->unregisterThread(t)
 
+#ifdef FREERTOS
+#  define PTHREAD_MIN_MSLEEP 10.
+#else
+#  define PTHREAD_MIN_MSLEEP 1.
+#endif
+
 /*! \class PIThread
  * \brief Thread class
  * \details This class allow you exec your code in separate thread.
@@ -286,7 +292,7 @@ void PIThread::terminate() {
 	PIINTROSPECTION_UNREGISTER_THREAD(tid());
 	terminating = running_ = false;
 	tid_ = -1;
-	//piCout << "terminate" << thread;
+	//piCout << "terminate" << PRIVATE->thread;
 #ifndef WINDOWS
 #  ifdef ANDROID
 	pthread_kill(PRIVATE->thread, SIGTERM);
@@ -423,7 +429,7 @@ void PIThread::__thread_func__(void * t) {
 			ct.tmr_.reset();
 			double sl(0.);
 			while (1) {
-				sl = piMind(ct.delay_ - ct.tmr_.elapsed_m(), 2.);
+				sl = piMind(ct.delay_ - ct.tmr_.elapsed_m(), PTHREAD_MIN_MSLEEP);
 #ifdef WINDOWS
 				/*if (sl <= 1. && sl >= 0.) {
 					piMSleep(1.);
@@ -431,10 +437,9 @@ void PIThread::__thread_func__(void * t) {
 				}*/
 #endif
 				//printf("%f %f %f\n", double(ct.delay_), ct.tmr_.elapsed_m(), sl);
+				if (ct.terminating) break;
 				if (sl <= 0.) break;
 				piMSleep(sl);
-				if (ct.terminating)
-					break;
 			}
 		}
 	}
@@ -511,3 +516,4 @@ void PIThread::__thread_func_once__(void * t) {
 #  endif
 #endif
 }
+