The current AmebaD core v3.1.2 has a bug that once WiFi is connected, WiFi.status() always reports WL_CONNECTED even if WiFi is lost.
There is no workaround yet for this WiFi.status() bug because of WiFi.RSSI() is still keeping the good value
Therefore, the auto-reconnect feature for WiFiMulti won't work, until this bug is fixed by Realtek.

This bug was originally denoted in Important Notes of WiFiManager_RTL8720 by @khoih-prog

Here is how GTimer.cpp functions currently validate the timerid parameter:

    if (timerid > GTIMER_MAX) {
        return;
    }

As timerid is used to index the timer_mapping[GTIMER_MAX]array, obviously the case timerid == GTIMER_MAX should be rejected. Hence the validation test should be

    if (timerid >= GTIMER_MAX) {
        return;
    }

Regards

BMP280 arduino library works well with ESP32,
but RTL8720DN did not work.

https://github.com/adafruit/Adafruit_BMP280_Library

Adafruit_BMP280.cpp
is it because RTL8720 i2c driver not compatible ? any fix ?

I believe that 80% of individual developers are using MacOS and Linux. Please provide as soon as possible. We really don't want to use Windows at home.

I was trying to use the sth20 sensor, and did not get any answer so i tried using the I2C scanner.

Loading the scanner for i2c devices displays a list of addresses. This is the code:

 #include <Wire.h>

 void setup() {
 Wire.begin();
 
 Serial.begin(9600);
 while (!Serial); 
 Serial.println("\nI2C Scanner");
 }
 
 void loop() {
 int nDevices = 0;

Serial.println("Scanning...");

 for (byte address = 1; address < 127; ++address) {

 Wire.beginTransmission(address);
 byte error = Wire.endTransmission();

  if (error == 0) {
  Serial.print("I2C device found at address 0x");
  if (address < 16) {
    Serial.print("0");
  }
  Serial.print(address, HEX);
  Serial.println("  !");

    ++nDevices;
    } else if (error == 4) {
    Serial.print("Unknown error at address 0x");
    if (address < 16) {
    Serial.print("0");
   }
   Serial.println(address, HEX);
   }
   }
   if (nDevices == 0) {
    Serial.println("No I2C devices found\n");
   } else {
    Serial.println("done\n");
   }
   delay(5000); 
   }

When I try to observe in the oscilloscope there is no signal, it just stays high (3.3v).

When I first got started with this board, When I would upload my sketch it would not update. I had to follow this guide along with modifying their python script to use my RS232 USB. https://wiki.seeedstudio.com/Wio-Terminal-Network-Overview/

please add a way to update the firmware from the Arduino IDE like they have for burning the bootloader to the Atmel devices. it looks like there are firmware binaries in the tools directory, but no way to upload them from the arduino IDE, and i found no guide for how to update them other than from Seeedstudio

How can I enable setInsecure WiFiSSLClient. I don't want to pass SSL certificate with the request.
Or is it possible to just use fingerprint for SSL requests?

I am using a simple sprintf in my code.

sprintf(path, "/input/post?node=%s&json={humidity:'%2.1f',temp: '%2.1f'}', 'apikey':%s}", cid, h, t, api_key);

what could be wrong here.?

Please reference https://github.com/mikey60/BW16-RTL8720DN-Module-Arduino

This should be relatively straight forward to implement, just add another variant and update the variant.cpp

The Variant.h also needs to be updated to select the correct pins for UART3 (PB_1/PB_2) The AT serial is useful to be reporposed for using this module in place of an ESP8266

1.I was using esp series like esp8266 to make some Iot server project. And so that i have the use of Async Servers whitch is a library of esp8266 but when i turn to rtl8720dn for the support of 5G wifi, there is no such lib for rtl8720dn(because the libs of esp8266 use some base APIs that rtl8720dn doesnt have) to more efficiently handle those net connections.

2.Are you going to support file systems like SPIFFS or LittleFS in esp8266. because it would be a good choice to have a easier to used file systems to store file or data for local storage.(because some users isn't able to have a internet service to process the datas whitch came from the IOT devices.)?

The RTL8722 has two SPI ports, but I get an error if I try and use SPI1 from the Arduino IDE. Is it supported?

Hi,
Has this SDK been tested MQTT for a long time ?
After testing, it is found that turning on Gtimer and regularly performing MQTT-publish will cause irregular disconnection.
This problem occurs even though Gtimer is turned off, but not as frequently.
Hope this part can be improved.

I am trying to get input from a bluetooth keyboard.
Scan and connect successed,get service look like ok, but can't read input value characteristics.
Here is my code.

#include "BLEDevice.h"
#include "BLEHIDClient.h"

#ifdef __cplusplus
extern "C" {
#endif

#include "simple_ble_client.h"
#include "profile_client.h"
#ifdef __cplusplus
}
#endif

T_SERVER_ID BLEHIDClient::_hidClientId=0;
void (*BLEHIDClient::_pDefaultCB)()=nullptr;

BLEHIDClient::BLEHIDClient(){

}

void BLEHIDClient::addClient(uint8_t max_link_num){
    client_init(1);
    _hidClientId=simp_ble_add_client(clientCallback,max_link_num);
    // client_register_general_client_cb(clientCallback);
}

void BLEHIDClient::enableNotify(uint8_t conn_id){
    simp_ble_client_set_v3_notify(conn_id,1);
}

uint8_t BLEHIDClient::discoveryHIDServices(uint8_t conn_id){
    return (client_by_uuid_srv_discovery(conn_id,_hidClientId,0x1812));
}

void BLEHIDClient::setDefaultCallback(void (*fCallback)()){
    _pDefaultCB=fCallback;
}

uint8_t BLEHIDClient::readHIDKeyboard(uint8_t conn_id){
    return (client_attr_read(conn_id,_hidClientId,0x2A22));
}

uint8_t BLEHIDClient::read2902(uint8_t conn_id){
    return (client_attr_read(conn_id,_hidClientId,0x2902));
}

T_APP_RESULT BLEHIDClient::clientCallback(T_CLIENT_ID client_id, uint8_t conn_id, void *p_data){
    T_APP_RESULT app_result = APP_RESULT_SUCCESS;
    _pDefaultCB();
    if(client_id==_hidClientId){
        T_SIMP_CLIENT_CB_DATA *p_simp_cb_data = (T_SIMP_CLIENT_CB_DATA *)p_data;
        switch(p_simp_cb_data->cb_type){
            case SIMP_CLIENT_CB_TYPE_READ_RESULT:{
                Serial.println("[1.cb_type] read");
                switch(p_simp_cb_data->cb_content.read_result.type){
                    case SIMP_READ_V1_READ:{
                        Serial.println("[2.cb_content] read");
                        Serial.print("cause ");
                        Serial.println(p_simp_cb_data->cb_content.read_result.cause);
                        Serial.print("data notify ");
                        Serial.println((int)p_simp_cb_data->cb_content.read_result.data.v3_notify_cccd);
                        Serial.print("data v4_indicate_cccd ");
                        Serial.println((int)p_simp_cb_data->cb_content.read_result.data.v4_indicate_cccd);
                        Serial.print("data v1_read size ");
                        Serial.println(p_simp_cb_data->cb_content.read_result.data.v1_read.value_size);
                        break;
                    }case SIMP_READ_V3_NOTIFY_CCCD:{
                        Serial.println("[2.cb_content] notify");
                        break;
                    }case SIMP_READ_V4_INDICATE_CCCD:{
                        Serial.println("[2.cb_content] indicate");
                        break;
                    }default:{
                        Serial.println("[2.cb_content] other");
                        break;
                    }
                }
                break;
            }
            case SIMP_CLIENT_CB_TYPE_NOTIF_IND_RESULT:{
                Serial.println("[1.cb_type] notify or indicate");
                break;
            }
            default:{
                Serial.println("[1.cb_type] other");
                break;
            }
        }
    }
    
    return app_result;

}

When I call readHIDKeyboard the value size in callback always 0.
DId I use the right api? And how to enable notification from host device?

Please give more infomation. Thx.

MPU6050 & MPU9250 are very popular IMUs (3-axis accelerator, 3-axis gyroscope, 3-axis compass)
The Arduino MPU6050 library works well with ESP32, but hang if using RTL8720DN.

https://github.com/ElectronicCats/mpu6050

Could you tell why this I2Cdev.cpp are not compatible with RTL8720DN ? and find a fix to make RTL8720DN working with MPU6050 / MPU9250.

Dearest.

Can I get references of the SPI speed on Arduino?

Regards.

Hi

Can I get the BSSID of the scanned APs?
I need to identify and connect to hidden Wi-Fi through the scanned hidden network.
I've tried to implement it myself, but the BSSID with the first byte equals 0x00 will lead to all zeros in consequent BSSID bytes.
Maybe some bugs in the precompiled binary object files?

I also notice there's a hardcoded limit of 64 scanned APs limit in the binaries, hope it will be available for configuration.

Thanks

This issue was found and proposed by Ameba Arduino SDK user @jojoling

There are always ameba_image_tools running even after the Arduino is closed.

Arduino 1.8.3
macOS 12.3.1

Is there a way to do Over-The-Air (OTA) updates using WiFi?

in wiring_digital.c line 93,

g_APinDescription[ulPin].ulPinMode = ulMode;

this line is wrapped in the if NOT_INITIAL so this only gets updated on the first call to pinMode.

example

pinmode(PA30, OUTPUT); //g_APinDescription[ulPin].ulPinMode value updated. pin is configured
pinmode(PA30, INPUT); //g_APinDescription[ulPin].ulPinMode value NOT updated. pin is configured
pinmode(PA30, OUTPUT); //g_APinDescription[ulPin].ulPinMode value NOT updated. pin is NOT configured, pinMode function is returned at line 56 in wiring_digital.c   pin is still setup as input.

moving line 93 to after line 96 in wiring_digital.c fixes the issue.

Here's a PS4 controller driver for ESP32
https://github.com/aed3/PS4-esp32

For RTL8720DN, how to modify the following two ?
ps4_l2cap.c
ps4_spp.c

The following program:

void loop() {
  Serial.println(random(6));
  delay(1000);
}

gives the compile error:

/var/folders/fd/7rbn3jxx5j942sk5kn0vhb740000gn/T/arduino_build_521905/core/core.a(WMath.cpp.o): In function `random(long)':
/Users/david/Library/Arduino15/packages/realtek/hardware/AmebaD/3.0.4/cores/arduino/WMath.cpp:47: undefined reference 
to `rtl_random'

Is there a way to disable the debugging messages that get output on the serial port; for example, at startup:

#calibration_ok:[2:19:11]

and on connecting to Wi-Fi, several messages such as:

RTL8721D[Driver]: set group key to hw: alg:4(WEP40-1 WEP104-5 TKIP-2 AES-4) keyid

fails on this copy command due to space in path

cmd /c copy /y "C:\\Users\\Michael" "Gilchrist\\AppData\\Local\\Arduino15\\packages\\realtek\\tools\\ameba_d_tools\\1.0.6\\km0_km4_image2.bin" "C:\\Users\\MICHAE~1\\AppData\\Local\\Temp\\arduino_build_798621" The system cannot find the file specified. exit status 1 Error compiling for board RTL8720DN(BW16).

full output: https://pastebin.com/4sm2K86K

I am trying to run the ListDevices example from the SoftWire library that does I2C in software and bit bangs the digitalWrite/digitalRead to implement I2C. I know there is hardware I2C but my device is not connected to one of those pins. I am reusing a board made for an ESP8266 so i cannot change which pins it is connected to. I have defined pins 23 and 2 for SDA and SCL (PA_30 and PB_2). I do not see any toggling on the scope. I have verified that digitalWrite and digitalRead work for both pins. Maybe there is a limit to how fast the GPIO can be toggled?

This is a replicate of this issue, which was corrected in the AmebaD SDK but unfortunately left the Arduino SDK aside. The buggy I2C_SlaveWrite() in the Arduino SDK should be replaced with this corrected version from the AmebaD SDK.

Dearest.

PlatformIO is a new generation toolset for embedded C/C++ development.

https://platformio.org/

Could you please add support and examples?

Cheers.

is it compatible with RTL8720DN mocule?

Today I received an Ameba RTL8722DM IoT Development Board from Seeed Studio.

When I connect the CON3 USB port to my computer I get /dev/cu.usbserial-AV0JH7JH on the Port menu.

Selecting this and uploading the Blink sketch then gives:

An error occurred while uploading the sketch
cp tools/macos/image_tool/imgtool_flashloader_amebad.bin ./
Please enter the upload mode (wait 5s)
    05
    04
    03
    02
    01
./tools/macos/image_tool/amebad_image_tool /dev/cu.usbserial-AV0JH7JH

Please let me know what I need to do to get this to work.

I'm using Arduino 1.8.13 on a MacBook Pro running macOS High Sierra 10.13.6.

This issue was found and proposed by Ameba Arduino SDK user @jojoling regarding the PR in https://github.com/ambiot/ambd_arduino/pull/101/files.

@jojoling has mentioned the using of EAGAIN is incorrect in this modification, no function is handling EAGAIN (if there is no data available right now, try again later) according to the definition.

It seems like everytime i want to include a standard library, the project fails to compile. usually due to naming conflicts between things in the SDK and things in the Arduino Core.

For instance if you #include "list" it will break do to the min/max methods in both arduinocore and the sdk.

This is what i get when trying to include "map"

In file included from /home/daniel/.arduino15/packages/realtek/tools/ameba_d_asdk_toolchain/1.0.1/arm-none-eabi/include/c++/6.5.0/ext/string_conversions.h:43:0,
                from /home/daniel/.arduino15/packages/realtek/tools/ameba_d_asdk_toolchain/1.0.1/arm-none-eabi/include/c++/6.5.0/bits/basic_string.h:5429,
                from /home/daniel/.arduino15/packages/realtek/tools/ameba_d_asdk_toolchain/1.0.1/arm-none-eabi/include/c++/6.5.0/string:52,
                from /home/daniel/.arduino15/packages/realtek/tools/ameba_d_asdk_toolchain/1.0.1/arm-none-eabi/include/c++/6.5.0/stdexcept:39,
                from /home/daniel/.arduino15/packages/realtek/tools/ameba_d_asdk_toolchain/1.0.1/arm-none-eabi/include/c++/6.5.0/array:39,
                from /home/daniel/.arduino15/packages/realtek/tools/ameba_d_asdk_toolchain/1.0.1/arm-none-eabi/include/c++/6.5.0/tuple:39,
                from /home/daniel/.arduino15/packages/realtek/tools/ameba_d_asdk_toolchain/1.0.1/arm-none-eabi/include/c++/6.5.0/bits/stl_map.h:63,
                from /home/daniel/.arduino15/packages/realtek/tools/ameba_d_asdk_toolchain/1.0.1/arm-none-eabi/include/c++/6.5.0/map:61,
                from /tmp/arduino_modified_sketch_773068/WiFiAPMode.ino:2:
/home/daniel/.arduino15/packages/realtek/tools/ameba_d_asdk_toolchain/1.0.1/arm-none-eabi/include/c++/6.5.0/cstdio:127:11: error: '::printf' has not been declared
  using ::printf;
          ^~~~~~
/home/daniel/.arduino15/packages/realtek/tools/ameba_d_asdk_toolchain/1.0.1/arm-none-eabi/include/c++/6.5.0/cstdio:137:11: error: '::sprintf' has not been declared
  using ::sprintf;
          ^~~~~~~

I appreciate the work that has been done to try and include these useful chips into the Arduino environment. However, This still needs a lot of work and a lot of testing to make sure users have a good experience like they do with the similar ESP8266.

Hi,

Can you let me know how to connect Enterprise wifi? is it supported or not?

Thanks and Regards

I catch permanent freeze after switch between Central to Peripheral. Call of BLE.beginPeripheral() blocks program permanently.

void WifiLoop()
{
int connecting_flag = 0;
// attempt to connect to Wifi network
if (WiFi.status() != WL_CONNECTED)
{
Serial.println("WiFi disconnected");
connecting_flag = 1;
BLE.configScan()->stopScan();
BLE.end();
Serial.println("Begin per...");
BLE.beginPeripheral();
Serial.println("Start adv...");
BLE.configAdvert()->startAdv();
}

while (WiFi.status() != WL_CONNECTED) {
Serial.println("Wait WiFi config..");
// wait for connection
delay(5000);
}
if (connecting_flag)
{
connecting_flag = 0;
BLE.beginCentral(0);
BLE.configScan()->startScan();
}
}

void BleAdvSetup()
{
//ble conf service
BLE.configServer(1);
configService.addService();
configService.begin();

// Wifi config service requires a specific advertisement format to be recognised by the app
// The advertisement needs the local BT address, which can only be obtained after starting peripheral mode
// Thus, we stop advertising to update the advert data, wait for advertising to stop, then restart advertising with new data

BLE.configAdvert()->stopAdv();
BLE.configAdvert()->setAdvData(configService.advData());
BLE.configAdvert()->updateAdvertParams();
delay(100);
//BLE.beginPeripheral();
//BLE.configAdvert()->startAdv();
}

void BleSetup()
{
BLE.init();
BLE.configScan()->setScanMode(GAP_SCAN_MODE_PASSIVE); // Active mode requests for scan response packets
BLE.configScan()->setScanInterval(5000); // Start a scan every 500ms
BLE.configScan()->setScanWindow(1000); // Each scan lasts for 250ms
BLE.configScan()->updateScanParams();
BLE.configScan()->setScanDuplicateFilter(0);
// Provide a callback function to process scan data.
// If no function is provided, default BLEScan::printScanInfo is used
BLE.setScanCallback(BleScanFunction);

BleAdvSetup();

BLE.beginCentral(0);
BLE.configScan()->startScan(); // Repeat scans for 5 seconds, then stop
}

A couple of other questions:

• Is there a call to disconnect a Soft Access Point. On the ESP8266/32 it's:

  WiFi.softAPdisconnect(true);
  

• Is there a call to create a hidden Soft Access Point? On the ESP8266/32 there's an optional fourth parameter:

  bool hidden = true;
  WiFi.softAP(ssid, pass, channel, hidden);
  

I've had a look in the source but can't find anything.
Thanks, David

Warning: This core does not support exporting sketches. Please consider upgrading it or contacting its author

In the following program:

void setup() {
  Serial.begin(9600);
}

void loop() {
  Serial.println("Hello");
  delay(1000);
}

the statement Serial.begin(9600) seems to be ignored, and the baud rate is left at 115200.

This is more of a feature request than an Issue. I know there is Hardware I2C which is fantastic! This is something that is lacking with the ESP8266 and I look forward to utilizing it in future projects. However, currently I am trying to reporpose some PCBs I had made for the ESP8266 to be used with the RTL8720DN (BW16) and it uses different pins. There is a SoftWire library that can be used, but I also have to update the subsequent sensor libraries to use SoftWire instead of the standard Wire interface. Please consider adding soft I2C support to Wire when selecting pins that do not have hardware support.

The current AmebaD core v3.1.2 has a bug that once WiFi is connected, WiFi.status() always reports WL_CONNECTED even if WiFi is lost. WiFi.RSSI() is also still keeping the good value.

Check the discussion in Solve WiFi.status() not updating bug #1 for more information.

The Access Point example WiFiAPMode.ino contains the test:

    String fv = WiFi.firmwareVersion();
    if (fv != "1.0.0") {
        Serial.println("Please upgrade the firmware");
    }

This seems dangerous, since it will stop working if you update the firmware to, for example, 1.1.0.

please provide a table similar to below on what state the pins should be in on boot. I know pulling LOG_TX low will put it in UART Download Mode, but it appears pulling PA_27 low does something as well. I could not find any information in the datasheet about this either.

                                      | GPIO 0 | GPIO 2 | GPIO 15 (MTDO)
  | ----------------------------------|--------|--------|---------
  | Flash Startup (Normal)            |   1    |   1    |   00
  | UART Download Mode (Programming)  |   0    |   1    |   0
  | SD-Card Boot                      |   0    |   0    |   1
  | 

I am pointed from the Ameba forum to open an issue here.

Here is the complete post:

I have RTL8720D and I tried to use some Neopixel with it. Neopixel is WS2812 and I connected it to pin 10. This is the sketch:

#include <Adafruit_NeoPixel.h>
#define PIN 10
Adafruit_NeoPixel strip = Adafruit_NeoPixel(1, PIN, NEO_GRB + NEO_KHZ800);
void setup() {
  strip.begin();
  strip.setBrightness(50);
  strip.show(); // Initialize all pixels to 'off'
}
void loop() {
  colorWipe(strip.Color(0, 255, 0), 1000); // Green
  //colorWipe(strip.Color(255, 0, 0), 1000); // Green
  //colorWipe(strip.Color(0, 0, 255), 1000); // Green
  colorWipe(strip.Color(0, 0, 0), 1000); // white
}

// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
  for(uint16_t i=0; i<strip.numPixels(); i++) {
      strip.setPixelColor(i, c);
      strip.show();
      delay(wait);
  }
}

With this setup, my Neopixel does not work. What am I doing wrong? I use Arduino IDE. I can blink the regular LED on that pin. What could be wrong with Neopixel? Should I use some other pin?

So, I am told that SDK is not supporting WS2812. Is there any chance to support it in near future?

Does the RTL8722 core support creating a soft access point, like the ESP8266 or ESP32?

I can't see any commands such as WiFi.softAP().

If not, are there any plans to add it?

I'm having a lot of problems creating a Wi-Fi soft access point using a call to WiFi.apbegin(ssid, pass, channel).

If I run the WiFiAPMode example it works OK, and I can join the network yourNetwork from my computer with the password Password.

However, if I try to integrate the code into my program I get the message "AP mode already started", and I can see the network in the list of networks, but if I try to connect to the network I get a message saying the password is not a WPA2 password.

The differences between my program and the example are:

• I'm not calling printWifiData() or printCurrentNet().

• I've changed loop() to an empty loop; in other words:

  void loop() { }
  

Any suggestions?

for https://github.com/ambiot/ambd_arduino/blob/master/Ameba_misc/Ameba_Fritzing%20%26%20Pinmux/RTL8720DN(BW16)/graphics/Rtlduino%20pinmap%20LED.svg

• Blue should be PA13
• Green should be PA14

I have an Ai-thinker NodeMCU bw15-kit.

Specification:
https://docs.ai-thinker.com/_media/rtl8710/bw15-kit_v1.0%E8%A7%84%E6%A0%BC%E4%B9%A6.pdf

Same sample online:
https://www.aliexpress.com/item/1005003730851266.html

I set the jump wire to PROG and try to upload. But

I also tried pressing RESET button while holding BURN button. Still the same.

My settings:

Are the push buttons J17 and J24 on the RTL8722DM user readable on the input pins?

Alternatively, is there a circuit diagram of the RTL8722DM available so we could answer this sort of question ourselves?

Thanks, David

I am havving trouble using the Serial TX and RX that is usually used for the AT commands in the arduino IDE, the serial on PB1 and PB2. From what it looks like this should be Serial2. but i do not get any output on the terminal or on the oscilliscope when trying to write to Serial2

auto upload flash & reset system is a key feature for developer on ameba arduino.
https://github.com/jojoling/ameba_bw16_autoflash

amebad_image_tool issues:

1. It can work on windows 10. But it has a issue that will get "error: Enter Uart Download Mode." only once when USB serial port device just plugin into computer.

2. Linux/macOS don't work due to "amebad_image_tool(no source)" also control RS232 signal DTR/RTS. It makes system leave uart download mode and get failed. It can see this situation on oscilloscope.

Thanks.