limit sockets used by HTTP server

seems that ctrl and msg sockets are not needed

README.md

@@ -14,6 +14,7 @@ But squeezelite-esp32 is highly extensible and you can add
 - Buttons and Rotary Encoder and map/combine them to various functions (play, pause, volume, next ...)
 - IR receiver (no pullup resistor or capacitor needed, just the 38kHz receiver)
 - Monochrome, GrayScale or Color displays using SPI or I2C (supported drivers are SH1106, SSD1306, SSD1322, SSD1326/7, SSD1351, ST7735, ST7789 and ILI9341).
+- Ethernet using a Microchip LAN8720 with RMII interface or Davicom DM9051 over SPI.
 
 Other features include
 
@@ -135,18 +136,19 @@ sda=<gpio>,scl=<gpio>[,port=0|1][,speed=<speed>]
 ```
 <strong>Please note that you can not use the same GPIO or port as the DAC</strong>
 ### SPI
-The NVS parameter "spi_config" set the spi's gpio used for generic purpose (e.g. display). Leave it blank to disable SPI usage. The DC parameter is needed for displays. Syntax is
+The esp32 has 4 SPI sub-systems, one is unaccessible so numbering is 0..2 and SPI0 is reserved for Flash/PSRAM. The NVS parameter "spi_config" set the spi's gpio used for generic purpose (e.g. display). Leave it blank to disable SPI usage. The DC parameter is needed for displays. Syntax is
 ```
-data=<gpio>,clk=<gpio>[,dc=<gpio>][,host=1|2]
+data|mosi=<gpio>,clk=<gpio>[,dc=<gpio>][,host=1|2][,miso=<gpio>]
 ``` 
+Default "host" is 1. The "miso" parameter is only used when SPI bus is to be shared with other peripheral (e.g. ethernet, see below), otherwise it can be omitted. Note that "data" can also be named "mosi". 
 ### DAC/I2S
 The NVS parameter "dac_config" set the gpio used for i2s communication with your DAC. You can define the defaults at compile time but nvs parameter takes precedence except for SqueezeAMP and A1S where these are forced at runtime. Syntax is
 ```
 bck=<gpio>,ws=<gpio>,do=<gpio>[,mck][,mute=<gpio>[:0|1][,model=TAS57xx|TAS5713|AC101|I2S][,sda=<gpio>,scl=gpio[,i2c=<addr>]]
 ```
-if "model" is not set or is not recognized, then default "I2S" is used. The option "mck" is used for some codecs that require a master clock (although they should not). Only GPIO0 can be used as MCLK. I2C parameters are optional an only needed if your dac requires an I2C control (See 'dac_controlset' below). Note that "i2c" parameters are decimal, hex notation is not allowed.
+if "model" is not set or is not recognized, then default "I2S" is used. The option "mck" is used for some codecs that require a master clock (although they should not). Only GPIO0 can be used as MCLK and be aware that this cannot coexit with RMII Ethernet (see ethernet section below). I2C parameters are optional and only needed if your DAC requires an I2C control (See 'dac_controlset' below). Note that "i2c" parameters are decimal, hex notation is not allowed.
 
-So far, TAS75xx, TAS5714, AC101 and ES8388 are recognized models where the proper init sequence/volume/power controls are sent. For other codecs that might require an I2C commands, please use the parameter "dac_controlset" that allows definition of simple commands to be sent over i2c for init, power on and off using a JSON syntax:
+So far, TAS57xx, TAS5713, AC101, WM8978 and ES8388 are recognized models where the proper init sequence/volume/power controls are sent. For other codecs that might require an I2C commands, please use the parameter "dac_controlset" that allows definition of simple commands to be sent over i2c for init, power on and off using a JSON syntax:
 ```
 { init: [ {"reg":<register>,"val":<value>,"mode":<nothing>|"or"|"and"}, ... {{"reg":<register>,"val":<value>,"mode":<nothing>|"or"|"and"} ],
   poweron: [ {"reg":<register>,"val":<value>,"mode":<nothing>|"or"|"and"}, ... {{"reg":<register>,"val":<value>,"mode":<nothing>|"or"|"and"} ],
@@ -370,10 +372,50 @@ The benefit of the "raw" mode is that you can build a player which is as close a
 There is no good or bad option, it's your choice. Use the NVS parameter "lms_ctrls_raw" to change that option
 	
 **Note that gpio 36 and 39 are input only and cannot use interrupt. When using them for a button, a 100ms polling is started which is expensive. Long press is also likely to not work very well**
+### Ethernet (coming soon)
+Wired ethernet is supported by esp32 with various options but squeezelite is only supporting a Microchip LAN8720 with a RMII interface like [this](https://www.aliexpress.com/item/32858432526.html) or Davicom DM9051 over SPI like [that](https://www.amazon.com/dp/B08JLFWX9Z).
+	
+#### RMII (LAN8720)	
+- RMII PHY wiring is fixed and can not be changed
+
+| GPIO   | RMII Signal | Notes        |
+| ------ | ----------- | ------------ |
+| GPIO21 | TX_EN       | EMAC_TX_EN   |
+| GPIO19 | TX0         | EMAC_TXD0    |
+| GPIO22 | TX1         | EMAC_TXD1    |
+| GPIO25 | RX0         | EMAC_RXD0    |
+| GPIO26 | RX1         | EMAC_RXD1    |
+| GPIO27 | CRS_DV      | EMAC_RX_DRV  |
+
+- SMI (Serial Management Interface) wiring is not fixed and you can change it either in the configuration or using "eth_config" parameter with the following syntax:
+```
+model=lan8720,mdc=<gpio>,mdio=<gpio>[,rst=<gpio>]
+```
+Connecting a reset pin for the LAN8720 is optional but recommended to avoid that GPIO0 (50MHz input clock) locks the esp32 in download mode at boot time.
+- Clock
+	
+The APLL of the esp32 is required for the audio codec, so we **need** a LAN8720 that provides a 50MHz clock. That clock **must** be connected to GPIO0, there is no alternative. This means that if your DAC requires an MCLK, then you are out of luck. It is not possible to have both to work together. There might be some workaround using CLK_OUT2 and GPIO3, but I don't have time for this.
+#### SPI (DM9051)
+Ethernet over SPI is supported as well and requires less GPIOs but is obvsiously slower. Another benefit is that the SPI bus can be shared with the display, but it's also possible to have a dedicated SPI interface. The esp32 has 4 SPI sub-systems, one is unaccessible so numbering is 0..2 and SPI0 is reserved for Flash/PSRAM. The "eth_config" parameter syntax becomes:
+```
+model=dm9051,cs=<gpio>,speed=<clk_in_Hz>,intr=<gpio>[,host=<-1|1|2>][,rst=<gpio>][,mosi=<gpio>,miso=<gpio>,clk=<gpio>]
+```
+- To use the system SPI, shared with display (see spi_config) "host" must be set to -1. Any other value will reserve the SPI interface (careful of conflict with spi_config). The default "host" is 2 to avoid conflicting wiht default "spi_config" settings.
+- When not using system SPI, "mosi" for data out, "miso" for data in and "clk" **must** be set
+- The esp32 has a special I/O multiplexer for faster speed (up to 80 MHz) but that requires using specific GPIOs, which depends on SPI bus (See [here](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/spi_master.html) for more details)
+
+| Pin Name | SPI2 | SPI3 |
+| -------- | ---- | ---- |		
+| CS0*     |  15  |  5   |
+| SCLK	   |  14  |  18  |
+| MISO	   |  12  |  19  |
+| MOSI	   |  13  |  23  |
+	
+** THIS IS NOT AVAILABLE YET, SO MORE TO COME ON HOW TO USE WIRED ETHERNET***
 ### Battery / ADC
 The NVS parameter "bat_config" sets the ADC1 channel used to measure battery/DC voltage. The "atten" value attenuates the input voltage to the ADC input (the read value maintains a 0-1V rage) where: 0=no attenuation(0..800mV), 1=2.5dB attenuation(0..1.1V), 2=6dB attenuation(0..1.35V), 3=11dB attenuation(0..2.6V). Scale is a float ratio applied to every sample of the 12 bits ADC. A measure is taken every 10s and an average is made every 5 minutes (not a sliding window). Syntax is
 ```
-channel=0..7,scale=<scale>,cells=<2|3>,[atten=<0|1|2|3>]
+channel=0..7,scale=<scale>,cells=<2|3>[,atten=<0|1|2|3>]
 ```
 NB: Set parameter to empty to disable battery reading. For well-known configuration, this is ignored (except for SqueezeAMP where number of cells is required)
 # Configuration
@@ -479,7 +521,7 @@ If you have already cloned the repository and you are getting compile errors on
 	- per mad & few others, edit configure and change $ac_link to add -c (faking link)
 	- change ac_files to remove ''
 	- add DEPS_CFLAGS and DEPS_LIBS to avoid pkg-config to be required
-	- stack consumption can be very high with some codec variants, so set NONTHREADSAFE_PSEUDOSTACK and GLOBAL_STACK_SIZE=32000 and unset VAR_ARRAYS in config.h
+	- stack consumption can be very high with some codec variants, so set NONTHREADSAFE_PSEUDOSTACK and GLOBAL_STACK_SIZE=48000 and unset VAR_ARRAYS in config.h
 - libmad has been patched to avoid using a lot of stack and is not provided here. There is an issue with sync detection in 1.15.1b from where the original stack patch was done but since a few fixes have been made wrt sync detection. This 1.15.1b-10 found on debian fixes the issue where mad thinks it has reached sync but has not and so returns a wrong sample rate. It comes at the expense of 8KB (!) of code where a simple check in squeezelite/mad.c that next_frame[0] is 0xff and next_frame[1] & 0xf0 is 0xf0 does the trick ...
 
 # Footnotes

components/codecs/CMakeLists.txt

@@ -1,5 +1,5 @@
 idf_component_register(
-	   INCLUDE_DIRS .  ./inc  inc/alac inc/FLAC  inc/helix-aac inc/mad inc/ogg inc/opus inc/opusfile inc/resample16 inc/soxr inc/vorbis
+	   INCLUDE_DIRS . ./inc inc/alac inc/FLAC inc/helix-aac inc/mad inc/ogg inc/opus inc/opusfile inc/resample16 inc/soxr inc/vorbis
 )
 
 if (DEFINED AAC_DISABLE_SBR)

components/platform_config/CMakeLists.txt

@@ -1,6 +1,6 @@
 idf_component_register(	SRC_DIRS . 
 						INCLUDE_DIRS . 
-						PRIV_REQUIRES   tools newlib  console esp_common freertos 
+						PRIV_REQUIRES tools newlib console esp_common freertos 
 						REQUIRES nvs_flash json
 )
 

components/platform_console/cmd_config.c

@@ -611,6 +611,7 @@ static int do_i2s_cmd(int argc, char **argv)
 	}
 	if(i2s_args.model_name->count>0 && strlen(i2s_args.model_name->sval[0])>0){
 		strncpy(i2s_dac_pin.model,i2s_args.model_name->sval[0],sizeof(i2s_dac_pin.model));
+		i2s_dac_pin.model[sizeof(i2s_dac_pin.model) - 1] = '\0';
 	}
 	if(!nerrors ){
 		fprintf(f,"Storing i2s parameters.\n");

components/platform_console/cmd_i2ctools.c

@@ -76,6 +76,7 @@ static struct {
 
 static struct {
     struct arg_int *data;
+	struct arg_int *miso;
     struct arg_int *clk;
     struct arg_int *dc;
     struct arg_int *host;
@@ -453,6 +454,7 @@ static int do_spiconfig_cmd(int argc, char **argv){
 	/* Check "--clk" option */
 	nerrors+=is_output_gpio(spiconfig_args.clk, f, &spi_config.sclk_io_num, true);
 	nerrors+=is_output_gpio(spiconfig_args.data, f, &spi_config.mosi_io_num, true);
+	nerrors+=is_output_gpio(spiconfig_args.miso, f, &spi_config.miso_io_num, true);
 	nerrors+=is_output_gpio(spiconfig_args.dc, f, &dc, true);
 	nerrors+=is_output_gpio(spiconfig_args.host, f, &host, true);
 
@@ -1030,7 +1032,8 @@ static void register_spiconfig(void)
 {
 	spiconfig_args.clear = arg_lit0(NULL, "clear", "Clear configuration");
 	spiconfig_args.clk = arg_int0("k", "clk", "<n>", "Clock GPIO");
-	spiconfig_args.data = arg_int0("d","data", "<n>","Data GPIO");
+	spiconfig_args.data = arg_int0("d","data", "<n>","Data OUT GPIO");
+	spiconfig_args.miso = arg_int0("d","miso", "<n>","Data IN GPIO");
 	spiconfig_args.dc = arg_int0("c","dc", "<n>", "DC GPIO");
 	spiconfig_args.host= arg_int0("h", "host", "1|2", "SPI Host Number");
 	spiconfig_args.end = arg_end(4);

components/platform_console/cmd_wifi.c

@@ -117,8 +117,10 @@ static bool wifi_join(const char *ssid, const char *pass, int timeout_ms)
     initialise_wifi();
     wifi_config_t wifi_config = { 0 };
     strncpy((char *) wifi_config.sta.ssid, ssid, sizeof(wifi_config.sta.ssid));
+	wifi_config.sta.ssid[sizeof(wifi_config.sta.ssid) - 1] = '\0';
     if (pass) {
         strncpy((char *) wifi_config.sta.password, pass, sizeof(wifi_config.sta.password));
+		wifi_config.sta.password[sizeof(wifi_config.sta.password) - 1] = '\0';		
     }
 
     ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );

components/raop/raop_sink.c

@@ -25,6 +25,11 @@
 #define CONFIG_AIRPLAY_NAME		"ESP32-AirPlay"
 #endif
 
+static EXT_RAM_ATTR struct raop_cb_s {
+	raop_cmd_vcb_t cmd;
+	raop_data_cb_t data;
+} raop_cbs;
+
 log_level	raop_loglevel = lINFO;
 log_level	util_loglevel;
 
@@ -150,17 +155,27 @@ void raop_sink_deinit(void) {
 }	
 
 /****************************************************************************************
- * Airplay sink initialization
+ * Airplay sink startup
  */
-void raop_sink_init(raop_cmd_vcb_t cmd_cb, raop_data_cb_t data_cb) {
-    const char *hostname;
+static bool raop_sink_start(raop_cmd_vcb_t cmd_cb, raop_data_cb_t data_cb) {
+    const char *hostname = NULL;
 	char sink_name[64-6] = CONFIG_AIRPLAY_NAME;
-	tcpip_adapter_ip_info_t ipInfo; 
+	tcpip_adapter_ip_info_t ipInfo = { }; 
 	struct in_addr host;
+	tcpip_adapter_if_t ifs[] = { TCPIP_ADAPTER_IF_ETH, TCPIP_ADAPTER_IF_STA, TCPIP_ADAPTER_IF_AP };
    	
 	// get various IP info
-	tcpip_adapter_get_ip_info(TCPIP_ADAPTER_IF_STA, &ipInfo);
-	tcpip_adapter_get_hostname(TCPIP_ADAPTER_IF_STA, &hostname);
+	for (int i = 0; i < sizeof(ifs) / sizeof(tcpip_adapter_if_t); i++) 
+		if (tcpip_adapter_get_ip_info(ifs[i], &ipInfo) == ESP_OK && ipInfo.ip.addr != IPADDR_ANY) {
+			tcpip_adapter_get_hostname(ifs[i], &hostname);			
+			break;
+		}
+	
+	if (!hostname) {
+		LOG_INFO( "no hostname/IP found, can't start AirPlay");
+		return false;
+	}
+	
 	host.s_addr = ipInfo.ip.addr;
 
     // initialize mDNS
@@ -168,7 +183,7 @@ void raop_sink_init(raop_cmd_vcb_t cmd_cb, raop_data_cb_t data_cb) {
     ESP_ERROR_CHECK( mdns_hostname_set(hostname) );
         
     char * sink_name_buffer= (char *)config_alloc_get(NVS_TYPE_STR,"airplay_name");
-    if(sink_name_buffer != NULL){
+    if (sink_name_buffer != NULL){
     	memset(sink_name, 0x00, sizeof(sink_name));
     	strncpy(sink_name,sink_name_buffer,sizeof(sink_name)-1 );
     	free(sink_name_buffer);
@@ -181,6 +196,30 @@ void raop_sink_init(raop_cmd_vcb_t cmd_cb, raop_data_cb_t data_cb) {
     esp_read_mac(mac, ESP_MAC_WIFI_STA);
 	cmd_handler_chain = cmd_cb;
 	raop = raop_create(host, sink_name, mac, 0, cmd_handler, data_cb);
+	
+	return true;
+}
+
+/****************************************************************************************
+ * Airplay sink timer handler
+ */
+static void raop_start_handler( TimerHandle_t xTimer ) {
+	if (raop_sink_start(raop_cbs.cmd, raop_cbs.data)) {
+		xTimerDelete(xTimer, portMAX_DELAY);
+	}	
+}	
+
+/****************************************************************************************
+ * Airplay sink initialization
+ */
+void raop_sink_init(raop_cmd_vcb_t cmd_cb, raop_data_cb_t data_cb) {
+	if (!raop_sink_start(cmd_cb, data_cb)) {
+		raop_cbs.cmd = cmd_cb;
+		raop_cbs.data = data_cb;
+		TimerHandle_t timer = xTimerCreate("raopStart", 5000 / portTICK_RATE_MS, pdTRUE, NULL, raop_start_handler);
+		xTimerStart(timer, portMAX_DELAY);
+		LOG_INFO( "Delaying AirPlay start");		
+	}	
 }
 
 /****************************************************************************************

components/services/accessors.c

@@ -118,7 +118,7 @@ static void set_i2s_pin(char *config, i2s_pin_config_t *pin_config) {
  * Get i2s config structure from config string
  */
 const i2s_platform_config_t * config_get_i2s_from_str(char * dac_config ){
-	static i2s_platform_config_t i2s_dac_pin = {
+	static EXT_RAM_ATTR i2s_platform_config_t i2s_dac_pin = {
 		.i2c_addr = -1,
 		.sda= -1,
 		.scl = -1,
@@ -142,12 +142,39 @@ const i2s_platform_config_t * config_get_i2s_from_str(char * dac_config ){
 	return &i2s_dac_pin;
 }
 
+/****************************************************************************************
+ * Get eth config structure from config string
+ */
+const eth_config_t * config_get_eth_from_str(char * eth_config ){
+	static EXT_RAM_ATTR eth_config_t eth_pin = {
+		.rmii = false,
+		.model = "",
+	};
+	char * p=NULL;
+
+	if ((p = strcasestr(eth_config, "model")) != NULL) sscanf(p, "%*[^=]=%15[^,]", eth_pin.model);
+	if ((p = strcasestr(eth_config, "mdc")) != NULL) eth_pin.mdc = atoi(strchr(p, '=') + 1);
+	if ((p = strcasestr(eth_config, "mdio")) != NULL) eth_pin.mdio = atoi(strchr(p, '=') + 1);
+	if ((p = strcasestr(eth_config, "rst")) != NULL) eth_pin.rst = atoi(strchr(p, '=') + 1);
+	if ((p = strcasestr(eth_config, "mosi")) != NULL) eth_pin.mosi = atoi(strchr(p, '=') + 1);
+	if ((p = strcasestr(eth_config, "miso")) != NULL) eth_pin.miso = atoi(strchr(p, '=') + 1);
+	if ((p = strcasestr(eth_config, "intr")) != NULL) eth_pin.intr = atoi(strchr(p, '=') + 1);
+	if ((p = strcasestr(eth_config, "cs")) != NULL) eth_pin.cs = atoi(strchr(p, '=') + 1);
+	if ((p = strcasestr(eth_config, "speed")) != NULL) eth_pin.speed = atoi(strchr(p, '=') + 1);
+	if ((p = strcasestr(eth_config, "clk")) != NULL) eth_pin.clk = atoi(strchr(p, '=') + 1);
+	if ((p = strcasestr(eth_config, "host")) != NULL) eth_pin.host = atoi(strchr(p, '=') + 1);
+	
+	if (strcasestr(eth_pin.model, "lan8720")) eth_pin.rmii = true;
+	
+	return &eth_pin;
+}
+
 /****************************************************************************************
  * Get spdif config structure 
  */
 const i2s_platform_config_t * config_spdif_get( ){
 	char * spdif_config = config_spdif_get_string();
-	static i2s_platform_config_t i2s_dac_config;
+	static EXT_RAM_ATTR i2s_platform_config_t i2s_dac_config;
 	memcpy(&i2s_dac_config, config_get_i2s_from_str(spdif_config), sizeof(i2s_dac_config));
 	free(spdif_config);
 	return &i2s_dac_config;
@@ -158,12 +185,34 @@ const i2s_platform_config_t * config_spdif_get( ){
  */
 const i2s_platform_config_t * config_dac_get(){
 	char * spdif_config = get_dac_config_string();
-	static i2s_platform_config_t i2s_dac_config;
+	static EXT_RAM_ATTR i2s_platform_config_t i2s_dac_config;
 	memcpy(&i2s_dac_config, config_get_i2s_from_str(spdif_config), sizeof(i2s_dac_config));
 	free(spdif_config);
 	return &i2s_dac_config;
 }
 
+/****************************************************************************************
+ * Get ethernet config structure 
+ */
+const eth_config_t * config_eth_get( ){
+	char * config = config_alloc_get_str("eth_config", CONFIG_ETH_CONFIG, "rst=" STR(CONFIG_ETH_PHY_RST_IO) 
+#if defined(CONFIG_ETH_LAN8720)	
+										 ",model=lan8720"
+#elif defined(CONFIG_ETH_DM9051)									
+										 ",model=dm9051"
+#endif										 
+										 ",mdc=" STR(CONFIG_ETH_MDC_IO) ",mdio=" STR(CONFIG_ETH_MDIO_IO) 
+										 ",host=" STR(CONFIG_ETH_SPI_HOST) ",cs=" STR(CONFIG_ETH_SPI_CS_IO)
+										 ",mosi=" STR(CONFIG_ETH_SPI_MOSI_IO) ",miso=" STR(CONFIG_ETH_SPI_MISO_IO) 
+										 ",intr=" STR(CONFIG_ETH_SPI_INTR_IO)
+										 ",clk=" STR(CONFIG_ETH_SPI_CLK_IO) ",speed=" STR(CONFIG_ETH_SPI_SPEED) );
+	static EXT_RAM_ATTR eth_config_t eth_config;
+	ESP_LOGD(TAG, "Ethernet config string %s", config);	
+	memcpy(&eth_config, config_get_eth_from_str(config), sizeof(eth_config));
+	free(config);
+	return &eth_config;
+}
+
 /****************************************************************************************
  * 
  */
@@ -342,7 +391,7 @@ esp_err_t config_spi_set(const spi_bus_config_t * config, int host, int dc){
 	esp_err_t err = ESP_OK;
 	char * config_buffer=calloc(buffer_size,1);
 	if(config_buffer)  {
-		snprintf(config_buffer,buffer_size,"data=%u,clk=%u,dc=%u,host=%u",config->mosi_io_num,config->sclk_io_num,dc,host);
+		snprintf(config_buffer,buffer_size,"data=%u,clk=%u,dc=%u,host=%u,miso=%d",config->mosi_io_num,config->sclk_io_num,dc,host,config->miso_io_num);
 		log_send_messaging(MESSAGING_INFO,"Updating SPI configuration to %s",config_buffer);
 		err = config_set_value(NVS_TYPE_STR, "spi_config", config_buffer);
 		if(err!=ESP_OK){
@@ -512,7 +561,7 @@ const set_GPIO_struct_t * get_gpio_struct(){
  */
 const spi_bus_config_t * config_spi_get(spi_host_device_t * spi_host) {
 	char *nvs_item, *p;
-	static spi_bus_config_t spi = {
+	static EXT_RAM_ATTR spi_bus_config_t spi = {
 		.mosi_io_num = -1,
         .sclk_io_num = -1,
         .miso_io_num = -1,
@@ -523,6 +572,8 @@ const spi_bus_config_t * config_spi_get(spi_host_device_t * spi_host) {
 	nvs_item = config_alloc_get_str("spi_config", CONFIG_SPI_CONFIG, NULL);
 	if (nvs_item) {
 		if ((p = strcasestr(nvs_item, "data")) != NULL) spi.mosi_io_num = atoi(strchr(p, '=') + 1);
+		if ((p = strcasestr(nvs_item, "mosi")) != NULL) spi.mosi_io_num = atoi(strchr(p, '=') + 1);
+		if ((p = strcasestr(nvs_item, "miso")) != NULL) spi.miso_io_num = atoi(strchr(p, '=') + 1);
 		if ((p = strcasestr(nvs_item, "clk")) != NULL) spi.sclk_io_num = atoi(strchr(p, '=') + 1);
 		if ((p = strcasestr(nvs_item, "dc")) != NULL) spi_system_dc_gpio = atoi(strchr(p, '=') + 1);
 		if ((p = strcasestr(nvs_item, "host")) != NULL) spi_system_host = atoi(strchr(p, '=') + 1);

components/services/accessors.h

@@ -30,6 +30,16 @@ typedef struct {
 	bool rotate;
 } display_config_t;
 
+typedef struct {
+	bool rmii;
+	char model[16];
+	int rst;
+	int mdc, mdio;
+	int host;
+	int cs, mosi, miso, intr, clk;
+	int speed;
+} eth_config_t;
+
 typedef struct {
 	i2s_pin_config_t pin;
 	char model[32];
@@ -75,6 +85,7 @@ typedef struct {
 } gpio_entry_t;
 
 const display_config_t * 	config_display_get();
+const eth_config_t * 		config_eth_get( );
 esp_err_t 					config_display_set(const display_config_t * config);
 esp_err_t 					config_i2c_set(const i2c_config_t * config, int port);
 esp_err_t 					config_i2s_set(const i2s_platform_config_t * config, const char * nvs_name);

components/services/buttons.c

@@ -47,6 +47,7 @@ static EXT_RAM_ATTR struct button_s {
 	TimerHandle_t timer;
 } buttons[MAX_BUTTONS];
 
+// can't use EXT_RAM_ATTR for initialized structure
 static struct {
 	int gpio, level;
 	struct button_s *button;
@@ -54,7 +55,7 @@ static struct {
 
 static TimerHandle_t polled_timer;
 
-static struct {
+static EXT_RAM_ATTR struct {
 	QueueHandle_t queue;
 	void *client;
 	rotary_encoder_info_t info;
@@ -62,7 +63,7 @@ static struct {
 	rotary_handler handler;
 } rotary;
 
-static struct {
+static EXT_RAM_ATTR struct {
 	RingbufHandle_t rb;
 	infrared_handler handler;
 } infrared;

components/services/led.c

@@ -28,7 +28,7 @@
 
 static const char *TAG = "led";
 
-static struct led_s {
+static EXT_RAM_ATTR struct led_s {
 	gpio_num_t gpio;
 	bool on;
 	int onstate;
@@ -40,7 +40,7 @@ static struct led_s {
 	TimerHandle_t timer;
 } leds[MAX_LED];
 
-static struct {
+static EXT_RAM_ATTR struct {
 	int gpio;
 	int active;
 	int pwm;

components/squeezelite/controls.c

@@ -218,7 +218,6 @@ static void notify(in_addr_t ip, u16_t hport, u16_t cport) {
 	
 	// close existing CLI connection and open new one
 	if (cli_sock >= 0) closesocket(cli_sock);
-	cli_sock = socket(AF_INET, SOCK_STREAM, 0);
 	connect_cli_socket();
 	
 	LOG_INFO("notified server %s hport %hu cport %hu", inet_ntoa(ip), hport, cport);

components/squeezelite/displayer.c

@@ -244,8 +244,7 @@ static void visu_handler(u8_t *data, int len);
 static void dmxt_handler(u8_t *data, int len);
 static void displayer_task(void* arg);
 
-// PLACEHOLDER
-void *led_display = 0x1000;
+void *led_display;
 
 /* scrolling undocumented information
 	grfs	
@@ -537,7 +536,8 @@ static void show_display_buffer(char *ddram) {
 	char *line2;
 
 	memset(line1, 0, LINELEN+1);
-	strncpy(line1, ddram, LINELEN);
+	strncpy(line1, ddram, LINELEN+1);
+	line1[LINELEN] = '\0';
 	line2 = &(ddram[LINELEN]);
 	line2[LINELEN] = '\0';
 

components/wifi-manager/_esp_httpd_main.c

@@ -76,24 +76,7 @@ static esp_err_t _httpd_server_init(struct httpd_data *hd)
         return ESP_FAIL;
     }
 
-    int ctrl_fd = cs_create_ctrl_sock(hd->config.ctrl_port);
-    if (ctrl_fd < 0) {
-        ESP_LOGE(TAG, LOG_FMT("error in creating ctrl socket (%d)"), errno);
-        close(fd);
-        return ESP_FAIL;
-    }
-
-    int msg_fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
-    if (msg_fd < 0) {
-        ESP_LOGE(TAG, LOG_FMT("error in creating msg socket (%d)"), errno);
-        close(fd);
-        close(ctrl_fd);
-        return ESP_FAIL;
-    }
-
     hd->listen_fd = fd;
-    hd->ctrl_fd = ctrl_fd;
-    hd->msg_fd  = msg_fd;
     return ESP_OK;
 }
 
@@ -198,14 +181,6 @@ static esp_err_t _httpd_server(struct httpd_data *hd)
     }
 
     /* Case0: Do we have a control message? */
-    if (FD_ISSET(hd->ctrl_fd, &read_set)) {
-        ESP_LOGD(TAG, LOG_FMT("processing ctrl message"));
-        _httpd_process_ctrl_msg(hd);
-        if (hd->hd_td.status == THREAD_STOPPING) {
-            ESP_LOGD(TAG, LOG_FMT("stopping thread"));
-            return ESP_FAIL;
-        }
-    }
 
     /* Case1: Do we have any activity on the current data
      * sessions? */
@@ -259,8 +234,6 @@ static void _httpd_thread(void *arg)
     }
 
     ESP_LOGD(TAG, LOG_FMT("web server exiting"));
-    close(hd->msg_fd);
-    cs_free_ctrl_sock(hd->ctrl_fd);
     _httpd_close_all_sessions(hd);
     close(hd->listen_fd);
     hd->hd_td.status = THREAD_STOPPED;

components/wifi-manager/wifi_manager.c

@@ -292,6 +292,7 @@ void wifi_manager_init_wifi(){
 
 void set_lms_server_details(in_addr_t ip, u16_t hport, u16_t cport){
 	strncpy(lms_server_ip,inet_ntoa(ip),sizeof(lms_server_ip));
+	lms_server_ip[sizeof(lms_server_ip)-1]='\0';
 	ESP_LOGI(TAG,"LMS IP: %s, hport: %d, cport: %d",lms_server_ip, hport, cport);
 	lms_server_port = hport;
 	lms_server_cport = cport;

main/Kconfig.projbuild

@@ -96,12 +96,70 @@ menu "Squeezelite-ESP32"
 			string
 			default "SPI,driver=ST7789,width=240,height=240,cs=5,back=12,speed=16000000,HFlip,VFlip" if TWATCH2020
 			default ""
+		config ETH_CONFIG
+			string
+			default ""
 		config DAC_CONTROLSET
 			string
 			default "{ \"init\": [ {\"reg\":41, \"val\":128}, {\"reg\":18, \"val\":255} ], \"poweron\": [ {\"reg\":18, \"val\":64, \"mode\":\"or\"} ], \"poweroff\": [ {\"reg\":18, \"val\":191, \"mode\":\"and\"} ] }" if TWATCH2020
 			default ""		
 		# AGGREGATES - end				
 	endmenu
+
+	menu "Ethernet Options"
+		visible if BASIC_I2C_BT && (ETH_USE_ESP32_EMAC || ETH_USE_SPI_ETHERNET)
+		choice 
+			prompt "Ethernet Chipset"
+			default ETH_NODRIVER
+			config ETH_NODRIVER
+				bool "Defined in NVS"			   
+			config ETH_LAN8720
+				bool "Microchip LAN8720 (RMII)"
+			config ETH_DM9051
+				bool "Davicom 9051 (SPI)"				
+		endchoice	
+		config ETH_PHY_RST_IO
+			int "PHY Reset GPIO number" if !ETH_NODRIVER
+			default -1
+			help
+				Set the GPIO number used to reset PHY chip.
+				Set to -1 to disable PHY chip hardware reset.		
+		config ETH_MDC_IO
+			int "SMI MDC GPIO number" if ETH_LAN8720
+			default -1
+			help
+				Set the GPIO number used by SMI MDC.		
+		config ETH_MDIO_IO
+			int "SMI MDIO GPIO number" if ETH_LAN8720
+			default -1
+			help
+				Set the GPIO number used by SMI MDIO.		
+		config ETH_SPI_HOST
+			int "SPI host number (-1,1 or 2)" if ETH_DM9051
+			default -1
+			help
+				Set to -1 to use system's SPI config (see Various I/O)
+				Set to 2 or 3 to use a dedicated bus 
+		config ETH_SPI_INTR_IO
+			int "interrupt" if ETH_DM9051
+			default -1													
+		config ETH_SPI_CS_IO
+			int "Chip Select" if ETH_DM9051
+			default -1								
+		config ETH_SPI_CLK_IO
+			int "SPI clock" if ETH_SPI_HOST != -1 && ETH_DM9051
+			default -1
+		config ETH_SPI_MOSI_IO
+			int "Data Out" if ETH_SPI_HOST != -1 && ETH_DM9051
+			default -1				
+		config ETH_SPI_MISO_IO
+			int "Data In"  if ETH_SPI_HOST != -1 && ETH_DM9051
+			default -1
+		config ETH_SPI_SPEED
+			int "SPI speed (Hz)" if ETH_SPI_HOST != -1 && ETH_DM9051
+			default 20000000
+	endmenu
+	
 	menu "Audio settings"
 		menu "DAC settings" 
 			visible if BASIC_I2C_BT

main/esp_app_main.c

@@ -366,6 +366,9 @@ void register_default_nvs(){
 	ESP_LOGD(TAG,"Registering default value for key %s, value %s", "display_config", CONFIG_DISPLAY_CONFIG);
 	config_set_default(NVS_TYPE_STR, "display_config", CONFIG_DISPLAY_CONFIG, 0);
 	
+	ESP_LOGD(TAG,"Registering default value for key %s, value %s", "eth_config", CONFIG_ETH_CONFIG);
+	config_set_default(NVS_TYPE_STR, "eth_config", CONFIG_ETH_CONFIG, 0);
+	
 	ESP_LOGD(TAG,"Registering default value for key %s, value %s", "i2c_config", CONFIG_I2C_CONFIG);
 	config_set_default(NVS_TYPE_STR, "i2c_config", CONFIG_I2C_CONFIG, 0);