Improve ESP32 implementation

[MaBecker]

ESP-IDF is 3.3.6

Collection of observations

functional:

• check wifi.save()

• neopixel, now working with multiple pins

• neopixel strips via different pins

• add SDCard support by removing FlashFS pr 1780 if you like SDCard support build your own firmware.

• source code contains jsWarn() , 65 matches across 8 files pr 1880

• hardware SPI is slower than software

• https see issue and forum, check this possible Solution

• update partitions_espruino.csv pr #1905

• add jsuGetFreeStack() pr 1882

• add exception if a i2c device is not available pr 1880

• add FLASH_BAUD to make process, because different boards need different rates pr 1880

• add jshSPISend16() removed as there is now jshSPISendMany()

• add BLE-UART functionality

• BLE-UART fixes (automatically 'flush' data, move console to BLE UART when connected, enable by default(?))

• add jshSPISendMany() pr 1886 & pr 1888

• I2C access on wrong address, check issue 1480 for details

• allow to remove BLUETOOTH from ESP32 board files pr #1944

• ESP32 hardware SPI receive broken since 2v06 check issue 1963 for details

• Problem with NRF.setScan() check issue 2138

• Wifi.getHostByName() needs sometimes more than one call details

• Possible ESP32 hanging WiFi scan issue #1939

• improve shiftOut, check issue 1915 for details

• NRF.updateServices() needs fixing issue 2292

• add touch sensor

• BLE/NRF error , check issue 2493, issue 2292

documentation:

• add list of pins that can be use with setWatch() pr 543

• update SPI section

  • name hardware pins
  • update number of SPIs

• add I2C section

  • name hardware pins
  • add i2c sample to left structure

• remove SDCard function from ESP32 page

• add neopixel

• update flash-map-and-access

• add sample and link to https

• update setHostname

Last Update: 09/03/2024

[MaBecker]

#1751 (comment)

wifi.save() does not work:

=function () { [native code] }
>wifi.connect('......', {password: '......'}, function() {
:    console.log('Connected to Wifi.  IP address is:', wifi.getIP().ip);
:    wifi.save(); // Next reboot will auto-connect
:});
ERROR: Wifi: event_handler STA_START: esp_wifi_connect: 12298(SSID is invalid)
=undefined
WARNING: Wifi:startMDNS - espressif
Connected to Wifi.  IP address is: 192.168.1.219
Uncaught Error: File already written with different data
 at line 2 col 15
    wifi.save();
              ^
in function called from system
>wifi.save();
Uncaught Error: File already written with different data
 at line 1 col 11
wifi.save();
          ^
>

Solution: Update to 2v04.401 or newer, go for lastest travis build and require('Storage').eraseAll()

[HyGy]

Cannot use sd card. (I'm not sure this is not my fault.) I get:

>SPI1.setup({mosi: SD_CMD, miso:SD_DATA0, sck:SD_CLK});
=undefined
>E.connectSDCard(SPI1, SD_DATA3 );
Uncaught Error: Unimplemented on Linux
 at line 1 col 32
E.connectSDCard(SPI1, SD_DATA3 );
                               ^

Here is the pinout:
i'm using esp32 audio kit, from here: http://wiki.ai-thinker.com/_media/esp32-audio-kit_v2.2_sch.pdf

(sd detect is working)

SD_DETECT=D34;

SD_CLK=D14;
SD_DATA2=D12;
SD_DATA3=D13;
SD_CMD=D15;
SD_DATA0=D2;
SD_DATA1=D4;

Solution: check #1778 for details

[HyGy]

save(); does not work

If call save(); ESP32 resets and then I cannot access the uploaded functions...

 2v04.401 (c) 2019 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
>Initializing
initializing sd watcher
>typeof watchSDCard
="function"
>save()
=undefined

After that esp32 resets:

Guru Meditation Error: Core  0 panic'ed (LoadProhibited). Excepti.
Core 0 register dump:
PC      : 0x400dd282  PS      : 0x00060130  A0      : 0x800e306f  
A2      : 0x00000065  A3      : 0x3f4064ac  A4      : 0x00000001  
A6      : 0xb33fffff  A7      : 0x00000000  A8      : 0x00000034  
A10     : 0x00000000  A11     : 0x00060023  A12     : 0x00060021  
A14     : 0xb33fffff  A15     : 0x0000000c  SAR     : 0x00000008  
EXCVADDR: 0x00000008  LBEG    : 0x4009b234  LEND    : 0x4009b262  

Backtrace: 0x400dd282:0x3ffde410 0x400e306c:0x3ffde440 0x400e32f60

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x1f (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_dr0
mode:DIO, clock div:2
load:0x3fff0018,len:4
load:0x3fff001c,len:2668
load:0x40078000,len:7304
load:0x40080000,len:5312
entry 0x40080274
E (38) boot: ota data partition invalid, falling back to factory
E (567) phy_init: store_cal_data_to_nvs_handle: store calibration)


 ____                 _ 
|  __|___ ___ ___ _ _|_|___ ___ 
|  __|_ -| . |  _| | | |   | . |
|____|___|  _|_| |___|_|_|_|___|
         |_| espruino.com
 2v04.401 (c) 2019 G.Williams

Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate

E (1177) phy_init: store_cal_data_to_nvs_handle: store calibratio)

>typeof watchSDCard
="undefined"

MaBecker: run require('Storage').eraseAll() to fix this

[HyGy]

After some times switching the switch connected to D39 (headphone sense), ESP32 resets.

Here is the code:

DEBUG=true;
HP_DETECT=D39;

var watchHP = function()
{
  if (DEBUG) { console.log('initializing headphone watcher'); }
  setWatch(function(e) {
    if (HP_DETECT.read()===false) 
    {
      if (DEBUG) console.log('headphone plugged');
      HP_PRESENT=true;
    }
    else 
    {
      if (DEBUG) console.log('headphone unplugged');
      HP_PRESENT=false;
    }
  }, HP_DETECT, { repeat: true, debounce: 500 });
};
var init = function() {
  console.log("Initializing");

  watchHP();
};

E.on('init', function() {  init(); } );

init();

Here is the serial coredump:

-> Telnet
Guru Meditation Error: Core  0 panic'ed (Unhandled debug exception)
Debug exception reason: BREAK instr 
Core 0 register dump:
PC      : 0x400803c0  PS      : 0x00060536  A0      : 0x40095224  A1      : 0x3ffe2010  
A2      : 0x8d004136  A3      : 0x00000000  A4      : 0x00000000  A5      : 0x00000000  
A6      : 0x00000000  A7      : 0x00000000  A8      : 0x80093948  A9      : 0x40095224  
A10     : 0x00000000  A11     : 0xffffffff  A12     : 0x400837b8  A13     : 0x00000000  
A14     : 0x3ffc1150  A15     : 0x00000001  SAR     : 0x00000011  EXCCAUSE: 0x00000001  
EXCVADDR: 0x00000000  LBEG    : 0x4009b234  LEND    : 0x4009b262  LCOUNT  : 0xffffffff  

Backtrace: 0x400803c0:0x3ffe2010 0x40095221:0x4011936a

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x1f (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0018,len:4

[MaBecker]

Started running device testing from Device Test Harness

[MaBecker]

run test for https

reduced vars down to 1700

>process.memory()
={ free: 1675, usage: 25, total: 1700, history: 0,
  gc: 0, gctime: 1.269, blocksize: 16 }
>ESP32.getState()
={
  sdkVersion: "v3.1.3-dirty",
  freeHeap: 15904, BLE: true, Wifi: true, minHeap: 13972 }

trying some simple code

var http = require("http");
http.get("https://www.google.com", function(res) {
  res.on('data', function(data) {
    console.log("got data");
  });
});
>Uncaught InternalError: Failed! mbedtls_ssl_setup: Not enough memory
 at line 6 col 2
});

@jumjum123

• What is the reason for using the mbed lib from espressif?
• Can we switch back to the mbed version distributed with Espruino?

[MaBecker]

slow spi see forum and issues #695 #1212

[rgomezwap]

I summarize the list of hardware functions that I use successfully:

• I use SPI to communicate with SDCard and TFT ILIST7735 screen at the same time
• I use PWM to move SG90 servo
• I use DAC on pin D26 for 8KHz sound from samples in Storage area. It works regular. I am working to make it read from SDCard.
• I use Neopixel with 16x16 matrix, quite well.
• I use I2C with IMU9250 works very well
• SetWatch works well, but it is not well documented that PINs are valid.
• BLE I don't use it yet, it also takes up a lot of JSVars space
• WIFI works very well for me, I use GET requests and receive javascript code via POST
• I work via Telnet, instead of Serial, to assess the stability of the connection.

I am ready for any contribution or details that allow us to advance and improve the ESP32 version.

[rgomezwap]

All these functions have been tested with firmware v2.0.130.

It seems that the latest firmware has problems, and perhaps some functions that I say work, have stopped working.

I have to check with the latest firmware.

[rgomezwap]

This is my actual enviroment :

>process.env;
={
  VERSION: "2v00.130",
  GIT_COMMIT: "9aba654",
  BOARD: "ESP32",
  FLASH: 0, RAM: 524288,
  SERIAL: "30aea432-34b4",
  CONSOLE: "Telnet",
  MODULES: "Flash,Storage,hea" ... "r,crypto,neopixel",
  EXPTR: 1073484860 }
> 

and API

>print(ESP32.getState());
{
  "sdkVersion": "v3.1",
  "freeHeap": 17024, "BLE": false, "Wifi": true, "minHeap": 13848 }
=undefined
> 

[rgomezwap]

I just generated a new Build environment. I have downloaded the latest github and the firmware generated is the following version:

espruino_2v04.406_esp32.elf
esptool.py v2.6
** espruino_2v04.406_esp32.bin uses 1395712 bytes of 1572864 available

I'll do the tests from here ...

[rgomezwap]

So my situation for testing is:

my previous environment where everything works well is:
2v00.130 and ESP-IDF 3.1 dated October 2018

and the new environment is
2v04.406 and ESP-IDF 3.1.3 dated March 2020

The objective is :
2v0x and ESP-IDF 4.x

[rgomezwap]

I publish here the little code that I have tried to use the Touch functionality ...

It is pending to implement it correctly, since it is necessary to define the state of a PIN as TOUCH.

file jswrap_io.c ->

/*JSON{
  "type"     : "function",
  "name"     : "touchRead",
  "generate" : "jswrap_io_touchRead",
  "params"   : [
    ["pin","JsVar","The pin to use"]
  ],
  "return"   : ["int","The touch Value of the Pin"]
}
Get the touch value of the given pin.

*/
JsVarInt jswrap_io_touchRead(JsVar *pinVar)
{
	
	// Handle the case where it is a single pin.
    Pin pin=jshGetPinFromVar(pinVar);
	
	if (jshIsPinValid(pin))
		{
		if (!jshGetPinStateIsManual(pin))
			{
			// RIC Pendiente !!!!!
			// RIC de momento no tenemos estado para definir los Touch PINs
			}
    		
		return jshPinGetTouchValue(pin);
		}
	else
		{
		// Handle pin being invalid.
		jsExceptionHere(JSET_ERROR,"Invalid pin!");
		}
		
}

file in jshardware.c ->

/**
 * Get the touch value of the corresponding pin.
 * \return The current touch value of the pin.
 */
JsVarInt CALLED_FROM_INTERRUPT jshPinGetTouchValue(Pin pin 			//!< The pin to have its value read.
												  ) 				// can be called at interrupt time 
{
		
	// recojemos el numero de PIN en nomenclatura ESP32
	gpio_num_t gpioNum=pinToESP32Pin(pin);
	
	// ahora convertimos el PIN de ESP32 a su numero en el driver de TouchPin
	if (gpioNum == 4)
		{
		gpioNum=0;
		}
	else if (gpioNum == 0)
		{
		gpioNum=1;
		}
	else if (gpioNum == 2)
		{
		gpioNum=2;
		}
	else if (gpioNum == 15)
		{
		gpioNum=3;
		}
	else if (gpioNum == 13)
		{
		gpioNum=4;
		}
	else if (gpioNum == 12)
		{
		gpioNum=5;
		}
	else if (gpioNum == 14)
		{
		gpioNum=6;
		}
	else if (gpioNum == 27)
		{
		gpioNum=7;
		}
	else if (gpioNum == 33)
		{
		gpioNum=8;
		}
	else if (gpioNum == 32)
		{
		gpioNum=9;
		}
			
	uint16_t touch_value=8888;
	esp_err_t estado;
	estado=touch_pad_read(gpioNum,&touch_value);
	if (estado != ESP_OK)								
		{
		// configuramos el PIN, OJO de solo hacerlo una vez !!!
		#define TOUCH_THRESH_NO_USE   (0)
		touch_pad_config(gpioNum,TOUCH_THRESH_NO_USE);
		
		touch_pad_read(gpioNum,&touch_value);
		}
		
	return (JsVarInt)touch_value;
	
}

In case the code is useful for someone to start the implementation

[rgomezwap]

The partition file (BIN) has been modified according to
#1776

but the CSV file detailing the partitions I don't know if it is still correct now.
It should be updated right?

https://github.com/espruino/Espruino/blob/master/targets/esp32/Changes_V3.1/partitions_espruino.csv