Refactored 'machine.Pin' module

  better interrupt handling, debouncing added

Refactored 'machine.ADC' module
  new functions added
  background data collecting and timed read to array or file

Refactored 'machine.DAC' module
  new functions added
  timed write from array or file
  waveform generator
  playing wav files

Updated 'machine' module
  fixed reading internal temperature sensor
  added reading internal Vdd (experimental)

Updated 'display' module
  added 'readScreen()' function

Updated 'neopixel' module
  fixed issue when neopixel is configured on multiple pins

Refactored 'utimeq' module
  new sort method for time item, ascending and descending sort available
  new functions added:
    len() returns tuple of current queue length and allocated length
    dump([True]) is provided which prints the detailed que information.
    peek(idx, res) is provided, which peeks the queue item form the index idx
    peektime([idx]) accepts optional argument to peek the time value from queue at index idx.
    time values in a range of int64_t are accepted and properly sorted. Floats can be accepted as time value and are rounded to int64_t
    overflow on time value never occurs as the time range is more then 290000 years with micro seconds value.

Menuconfig:
  added option to enable/disable automatic garbage collection on boot
  added option to set automatic garbage collection threshold

'esp-idf' updated
     date: 2018-05-19
  version: v3.1-dev-1101-g1f7b41e2
     hash: 1f7b41e206646417adc572da928175d33c986bd3

Other minor updates, improvements and bug fixes

LICENSE.md

@@ -7,7 +7,7 @@ All the source code in this repository is released under MIT or Apache v2.0 lice
 
 All the sources related to **MicroPython** are under **MIT** license.
 
-**esp-idf** on which this port is based, is released under **Apache v2.0** license.
+**esp-idf** on which this port is based, is released under **Apache v2.0** license ([details](http://esp-idf.readthedocs.io/en/latest/COPYRIGHT.html)).
 
 > All the sources created/modified by the repository owner are released under **MIT** license and contains the following copyright notice:<br>
 > *Copyright (c) 2018 LoBo (https://github.com/loboris)*

MicroPython_BUILD/.cproject

@@ -44,7 +44,6 @@
 									<listOptionValue builtIn="false" value="&quot;${IDF_PATH}/components/wear_levelling/include&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${IDF_PATH}/components/soc/esp32/include&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${IDF_PATH}/components/heap/include&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${IDF_PATH}/components/mbedtls/include&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${IDF_PATH}/components/mbedtls/port/include&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${IDF_PATH}/components/app_update/include&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${IDF_PATH}/components/mdns/include&quot;"/>
@@ -59,13 +58,15 @@
 									<listOptionValue builtIn="false" value="&quot;${IDF_PATH}/components/bt/bluedroid/api/include&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${PWD}/../Tools/xtensa-esp32-elf/bin&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${PWD}/../Tools/xtensa-esp32-elf/xtensa-esp32-elf/include&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${IDF_PATH}/components/mbedtls/mbedtls/include&quot;"/>
 								</option>
 								<option id="gnu.c.compiler.option.preprocessor.def.symbols.507238637" name="Defined symbols (-D)" superClass="gnu.c.compiler.option.preprocessor.def.symbols" useByScannerDiscovery="false" valueType="definedSymbols">
 									<listOptionValue builtIn="false" value="BUILD_TIME=100000"/>
 									<listOptionValue builtIn="false" value="LED_ACT=5"/>
 									<listOptionValue builtIn="false" value="LWIP_DNS=1"/>
 									<listOptionValue builtIn="false" value="LWIP_SOCKET=1"/>
 									<listOptionValue builtIn="false" value="IDF_USEHEAP=1"/>
+									<listOptionValue builtIn="false" value="HAVE_CONFIG_H"/>
 								</option>
 								<inputType id="cdt.managedbuild.tool.gnu.c.compiler.input.827066523" superClass="cdt.managedbuild.tool.gnu.c.compiler.input"/>
 							</tool>

MicroPython_BUILD/.gitignore

@@ -23,7 +23,7 @@ build/
 patches/
 
 qstrdefs.generated.h
-partitions_mpy.csv
+/partitions_mpy.csv
 /sdkconfig
 sdkconfig.old
 _sdkconfig.saved
@@ -36,4 +36,3 @@ sdkconfig.fw_psram_all
 
 make_firmwares.sh
 mncfg_exit.txt
-updates.txt

MicroPython_BUILD/BUILD.sh

@@ -50,8 +50,8 @@
 
 
 #=======================
-TOOLS_VER=ver20180515.id
-BUILD_VER=ver20180516.id
+TOOLS_VER=ver20180604.id
+BUILD_VER=ver20180604.id
 #=======================
 
 # -----------------------------

MicroPython_BUILD/components/curl/lib/ssh.c

@@ -395,7 +395,7 @@ static void state(struct connectdata *conn, sshstate nowstate)
   sshc->state = nowstate;
 }
 
-
+/*
 // ==== LoBo ===============================================
 
 int access (const char *file, int type)
@@ -446,7 +446,7 @@ return 0;
 }
 
 // ==== LoBo ===============================================
-
+*/
 
 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
 static int sshkeycallback(struct Curl_easy *easy,

MicroPython_BUILD/components/micropython/Kconfig.projbuild

@@ -122,6 +122,20 @@ menu "MicroPython"
 	        Whether to return number of collected objects from gc.collect()
 	        If enabled, gc.collect will return the tuple of marked (used) and collected heap blocks
 
+	    config MICROPY_GC_SET_THRESHOLD
+	        bool "Set GC threshold on boot"
+	        default y
+	        help
+	        Set the automatic garbage collector threshold on boot
+
+	    config MICROPY_GC_THRESHOLD_VALUE
+	        int "GC threshold percentage"
+	        range 50 95
+	        default 90
+	        help
+	        Default automatic garbage collector threshold value as percentage of the available heap
+	        Threshold value can be changed at runtime using gc.threshold() function
+
 	    config MICROPY_SCHEDULER_DEPTH
 	        int "Scheduler depth"
 	        range 6 32
@@ -167,7 +181,7 @@ menu "MicroPython"
 	        help
 	        Run MicroPython tasks on both cores, if not selected MicroPython tasks are created pinned to one core
 	        WARNING: When enabled, it may introduce some issues with uasyncio and threads
-	                 not recommended for now!
+	                 There is no benefits from using it at the moment, so it is not recommended for now!
 
 	    config MICROPY_TASK_PRIORITY
 	        int "Main task priority"
@@ -182,7 +196,7 @@ menu "MicroPython"
 	        range 6 64 if SPIRAM_SUPPORT
 	        default 16
 	        help
-	        Set the size of the MicroPython stack in Kbytes.
+	        Set the default size of the MicroPython stack in Kbytes.
 
 	    config MICROPY_HEAP_SIZE
 	        int "MicroPython heap size (KB)"
@@ -193,7 +207,7 @@ menu "MicroPython"
 	        default 72 if !SPIRAM_SUPPORT && MICROPY_USE_CURL && MICROPY_USE_CURL_TLS
 	        default 3072 if SPIRAM_SUPPORT
 	        help
-	        Set the size of the MicroPython heap in Kbytes
+	        Set the default size of the MicroPython heap in Kbytes
 	        If SPIRAM is not used, heap is allocated from DRAM and setting the heap size too large
 	        may result in insuficient heap for C services like mqtt, gsm, curl... 
 

MicroPython_BUILD/components/micropython/component.mk

@@ -83,7 +83,7 @@ MP_EXTRA_INC += -I$(ESPCOMP)/tcpip_adapter/include
 MP_EXTRA_INC += -I$(ESPCOMP)/lwip/include/lwip
 MP_EXTRA_INC += -I$(ESPCOMP)/lwip/include/lwip/port
 MP_EXTRA_INC += -I$(ESPCOMP)/lwip/include/lwip/posix
-MP_EXTRA_INC += -I$(ESPCOMP)/mbedtls/include
+MP_EXTRA_INC += -I$(ESPCOMP)/mbedtls/mbedtls/include
 MP_EXTRA_INC += -I$(ESPCOMP)/mbedtls/port/include
 MP_EXTRA_INC += -I$(ESPCOMP)/spi_flash/include
 MP_EXTRA_INC += -I$(ESPCOMP)/wear_levelling/include
@@ -137,7 +137,7 @@ MP_CLEAN_EXTRA += $(COMPONENT_PATH)/genhdr/qstrdefs.generated.h
 # --------------------------------
 include $(COMPONENT_PATH)/py/py.mk
 
-#CFLAGS += -std=gnu99
+#CFLAGS += -DESP_PLATFORM
 CFLAGS += $(CFLAGS_MOD)
 
 

MicroPython_BUILD/components/micropython/esp32/libs/neopixel.c

@@ -237,10 +237,13 @@ int neopixel_init(int gpioNum, rmt_channel_t channel)
 	if (neopixel_sem == NULL) {
 		neopixel_sem = xSemaphoreCreateBinary();
 		if (neopixel_sem == NULL) return ESP_FAIL;
+		// Note: binary semaphores created using xSemaphoreCreateBinary() are created in a state
+		// such that the semaphore must first be 'given' before it can be 'taken' !
+		xSemaphoreGive(neopixel_sem);
+
+		DPORT_SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_RMT_CLK_EN);
+		DPORT_CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_RMT_RST);
 	}
-	// Note: binary semaphores created using xSemaphoreCreateBinary() are created in a state
-	// such that the semaphore must first be 'given' before it can be 'taken' !
-	xSemaphoreGive(neopixel_sem);
 
 	// Allocate RMT interrupt if needed
 	if (rmt_intr_handle == NULL) {
@@ -253,9 +256,6 @@ int neopixel_init(int gpioNum, rmt_channel_t channel)
 	uint32_t tx_thr_event_mask = 0x01000000 << channel;
 	uint32_t tx_end_event_mask = 1 << (channel*3);
 
-	DPORT_SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_RMT_CLK_EN);
-	DPORT_CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_RMT_RST);
-
 	res = rmt_set_pin(channel, RMT_MODE_TX, (gpio_num_t)gpioNum);
 	if (res != ESP_OK) {
 		xSemaphoreGive(neopixel_sem);
@@ -321,20 +321,27 @@ void neopixel_deinit(rmt_channel_t channel)
 }
 
 // Start the transfer of Neopixel color bytes from buffer
-//=====================================================================
-void np_show(pixel_settings_t *px, rmt_channel_t channel, uint8_t wait)
+//=======================================================
+void np_show(pixel_settings_t *px, rmt_channel_t channel)
 {
 	// Wait for previous operation to finish
 	xSemaphoreTake(neopixel_sem, portMAX_DELAY);
 
 	RMTchannel = channel;
+	// Enable interrupt for neopixel RMT channel
+	uint32_t tx_thr_event_mask = 0x01000000 << channel;
+	uint32_t tx_end_event_mask = 1 << (channel*3);
+	RMT.int_ena.val = tx_thr_event_mask | tx_end_event_mask;
+
 	uint16_t blen = px->pixel_count * (px->nbits / 8);
 
+	// Allocate neopixel buffer if needed
 	if (neopixel_buffer == NULL) {
 		neopixel_buffer = (uint8_t *)malloc(blen);
 		if (neopixel_buffer == NULL) return;
 		neopixel_buf_len = blen;
 	}
+	// Resize neopixel buffer if needed
 	if (neopixel_buf_len < blen) {
 		// larger buffer needed
 		free(neopixel_buffer);
@@ -362,11 +369,11 @@ void np_show(pixel_settings_t *px, rmt_channel_t channel, uint8_t wait)
 	RMT.conf_ch[RMTchannel].conf1.mem_rd_rst = 1;
 	RMT.conf_ch[RMTchannel].conf1.tx_start = 1;
 
-	if (wait) {
-		// Wait for operation to finish
+	// Wait for operation to finish
+	if (xSemaphoreTake(neopixel_sem, 0) == pdTRUE) {
 		xSemaphoreTake(neopixel_sem, portMAX_DELAY);
-		xSemaphoreGive(neopixel_sem);
 	}
+	xSemaphoreGive(neopixel_sem);
 }
 
 // Clear the Neopixel color buffer

MicroPython_BUILD/components/micropython/esp32/libs/neopixel.h

@@ -60,7 +60,7 @@ typedef struct pixel_settings {
 void np_set_pixel_color(pixel_settings_t *px, uint16_t idx, uint32_t color);
 void np_set_pixel_color_hsb(pixel_settings_t *px, uint16_t idx, float hue, float saturation, float brightness);
 uint32_t np_get_pixel_color(pixel_settings_t *px, uint16_t idx, uint8_t *white);
-void np_show(pixel_settings_t *px, rmt_channel_t channel, uint8_t wait);
+void np_show(pixel_settings_t *px, rmt_channel_t channel);
 void np_clear(pixel_settings_t *px);
 
 int neopixel_init(int gpioNum, rmt_channel_t channel);

MicroPython_BUILD/components/micropython/esp32/libs/tft/tft.h

@@ -205,6 +205,7 @@ void TFT_drawPixel(int16_t x, int16_t y, color_t color, uint8_t sel);
 //------------------------------------------
 color_t TFT_readPixel(int16_t x, int16_t y);
 
+
 /*
  * Draw vertical line at given x,y coordinates
  * 
@@ -628,6 +629,7 @@ int TFT_getStringWidth(char* str);
 /*
  * Fills the rectangle occupied by string with current background color
  */
+//------------------------------------------------
 void TFT_clearStringRect(int x, int y, char *str);
 
 /*