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About nRF52832

This is from the previous Blog: devzone.nordicsemi.com/.../ I've looked at the other dev boards. I found this one nRF52832 System on Chip and Amber SPP-over-BLE profile. The one from Nguyen Hoan Hoang I can't find in Germany. But my question to all that is this: How do I program the chip? Previous chips I was able to use the Arduino IDE which uses .h and .ino files. The code itself I think is in "C" if I'm not mistaken. Can I use the same Arduino IDE to program the Nordic chip nRF52832? Or do I have to learn something new again? Furthermore: this chip, nRF52832 System on Chip and Amber SPP-over-BLE profile: can I use it for my project? Program it to open up 2 logic PIN's to power a motor driver? What's a good driver for this board? Currently I'm using this one DRV 8835 from Pololu. Would that work for this board as well? Or is this board also come with preprogramming for Characteristics/Services? And its own UI? Remember, I want my own UI. This is what I want: click on the app icon-it should open the app and autoscan for peripheral-when found only connect if the ble mac address is the correct one-once connected it should have only 2 buttons on the UI to open 2 logic pins that's it for now. Questions: Can I program this chip like mentioned above? Can I use the Arduino IDE to program it? if not what do I need? Can I use the Pololu driver? Or do you have another one for me? Or should I rather use this board: nRF51 Dongle for my project? On this website: [http://www.allaboutcircuits.com/proje...] you can see the UI on the device and the code for it. Please have a look and tell me if I can use this code for to program those to devices: nRF51 Dongle, nRF52832. Oh, and how do I program this chip: nRF52832? I don't see a usb connection on it to connect it to the PC? While on the dongle I think I can connect it to the PC to program it, right? Or is it easier to just clear/flush my current chip? So that it has no characteristics on it. Then reprogram it with Nordic's firmware so that a peripheral can connect to the chip and send a simple char of lets say "o" to open one PIN and send another char lets say "c" to open another PIN? Can I do this on this chip? I would then put this code on the chip:

/*********************************************************************
 This is an example for our nRF51822 based Bluefruit LE modules

 Pick one up today in the adafruit shop!

 Adafruit invests time and resources providing this open source code,
 please support Adafruit and open-source hardware by purchasing
 products from Adafruit!

 MIT license, check LICENSE for more information
 All text above, and the splash screen below must be included in
 any redistribution
*********************************************************************/

#include <string.h>
#include <Arduino.h>
#include <SPI.h>
#if not defined (_VARIANT_ARDUINO_DUE_X_) && not defined (_VARIANT_ARDUINO_ZERO_)
  #include <SoftwareSerial.h>
#endif

#include "Adafruit_BLE.h"
#include "Adafruit_BluefruitLE_SPI.h"
#include "Adafruit_BluefruitLE_UART.h"

#include "BluefruitConfig.h"

/*=========================================================================
    APPLICATION SETTINGS

    FACTORYRESET_ENABLE       Perform a factory reset when running this sketch
   
                              Enabling this will put your Bluefruit LE module
                              in a 'known good' state and clear any config
                              data set in previous sketches or projects, so
                              running this at least once is a good idea.
   
                              When deploying your project, however, you will
                              want to disable factory reset by setting this
                              value to 0.  If you are making changes to your
                              Bluefruit LE device via AT commands, and those
                              changes aren't persisting across resets, this
                              is the reason why.  Factory reset will erase
                              the non-volatile memory where config data is
                              stored, setting it back to factory default
                              values.
       
                              Some sketches that require you to bond to a
                              central device (HID mouse, keyboard, etc.)
                              won't work at all with this feature enabled
                              since the factory reset will clear all of the
                              bonding data stored on the chip, meaning the
                              central device won't be able to reconnect.
    MINIMUM_FIRMWARE_VERSION  Minimum firmware version to have some new features
    MODE_LED_BEHAVIOUR        LED activity, valid options are
                              "DISABLE" or "MODE" or "BLEUART" or
                              "HWUART"  or "SPI"  or "MANUAL"
    -----------------------------------------------------------------------*/
    #define FACTORYRESET_ENABLE         1
    #define MINIMUM_FIRMWARE_VERSION    "0.6.6"
    #define MODE_LED_BEHAVIOUR          "MODE"
/*=========================================================================*/

// Create the bluefruit object, either software serial...uncomment these lines
/*
SoftwareSerial bluefruitSS = SoftwareSerial(BLUEFRUIT_SWUART_TXD_PIN, BLUEFRUIT_SWUART_RXD_PIN);

Adafruit_BluefruitLE_UART ble(bluefruitSS, BLUEFRUIT_UART_MODE_PIN,
                      BLUEFRUIT_UART_CTS_PIN, BLUEFRUIT_UART_RTS_PIN);
*/

/* ...or hardware serial, which does not need the RTS/CTS pins. Uncomment this line */
// Adafruit_BluefruitLE_UART ble(BLUEFRUIT_HWSERIAL_NAME, BLUEFRUIT_UART_MODE_PIN);

/* ...hardware SPI, using SCK/MOSI/MISO hardware SPI pins and then user selected CS/IRQ/RST */
Adafruit_BluefruitLE_SPI ble(BLUEFRUIT_SPI_CS, BLUEFRUIT_SPI_IRQ, BLUEFRUIT_SPI_RST);

/* ...software SPI, using SCK/MOSI/MISO user-defined SPI pins and then user selected CS/IRQ/RST */
//Adafruit_BluefruitLE_SPI ble(BLUEFRUIT_SPI_SCK, BLUEFRUIT_SPI_MISO,
//                             BLUEFRUIT_SPI_MOSI, BLUEFRUIT_SPI_CS,
//                             BLUEFRUIT_SPI_IRQ, BLUEFRUIT_SPI_RST);


// A small helper
void error(const __FlashStringHelper*err) {
  Serial.println(err);
  while (1);
}

// function prototypes over in packetparser.cpp
uint8_t readPacket(Adafruit_BLE *ble, uint16_t timeout);
float parsefloat(uint8_t *buffer);
void printHex(const uint8_t * data, const uint32_t numBytes);

// the packet buffer
extern uint8_t packetbuffer[];


/**************************************************************************/
/*!
    @brief  Sets up the HW an the BLE module (this function is called
            automatically on startup)
*/
/**************************************************************************/
void setup(void)
{
  while (!Serial);  // required for Flora & Micro
  delay(500);

  Serial.begin(115200);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  Serial.println(F("Adafruit Bluefruit App Controller Example"));
  Serial.println(F("-----------------------------------------"));

  /* Initialise the module */
  Serial.print(F("Initialising the Bluefruit LE module: "));

  if ( !ble.begin(VERBOSE_MODE) )
  {
    error(F("Couldn't find Bluefruit, make sure it's in CoMmanD mode & check wiring?"));
  }
  Serial.println( F("OK!") );

  if ( FACTORYRESET_ENABLE )
  {
    /* Perform a factory reset to make sure everything is in a known state */
    Serial.println(F("Performing a factory reset: "));
    if ( ! ble.factoryReset() ){
      error(F("Couldn't factory reset"));
    }
  }


  /* Disable command echo from Bluefruit */
  ble.echo(false);

  Serial.println("Requesting Bluefruit info:");
  /* Print Bluefruit information */
  ble.info();

  Serial.println(F("Please use Adafruit Bluefruit LE app to connect in Controller mode"));
  Serial.println(F("Then activate/use the sensors, color picker, game controller, etc!"));
  Serial.println();

  ble.verbose(false);  // debug info is a little annoying after this point!

  /* Wait for connection */
  while (! ble.isConnected()) {
      delay(500);
  }

  Serial.println(F("******************************"));

  // LED Activity command is only supported from 0.6.6
  if ( ble.isVersionAtLeast(MINIMUM_FIRMWARE_VERSION) )
  {
    // Change Mode LED Activity
    Serial.println(F("Change LED activity to " MODE_LED_BEHAVIOUR));
    ble.sendCommandCheckOK("AT+HWModeLED=" MODE_LED_BEHAVIOUR);
  }

  // Set Bluefruit to DATA mode
  Serial.println( F("Switching to DATA mode!") );
  ble.setMode(BLUEFRUIT_MODE_DATA);

}

/**************************************************************************/
/*!
    @brief  Constantly poll for new command or response data
*/
/**************************************************************************/
void loop(void)
{
  /* Wait for new data to arrive */
  uint8_t len = readPacket(&ble, BLE_READPACKET_TIMEOUT);
  if (len == 0) return;
  /* Got a packet! */
  // printHex(packetbuffer, len);
  // Buttons
  if (packetbuffer[1] == 'B') 
  {
    uint8_t buttnum = packetbuffer[2] - '0';
    boolean pressed = packetbuffer[3] - '0';
    Serial.print ("Button Number "); Serial.print (buttnum); Serial.print (",");
    if (7 == buttnum)
    {
     if (pressed)
     {
         digitalWrite(12, HIGH);
      }
    else
    {
      digitalWrite(12, LOW);
     }
  }
     if (8 == buttnum)
    {
      if (pressed)
     {
      digitalWrite(11, HIGH);
     }
     else
     {
     digitalWrite(11, LOW);
    }
    }
  }
}

Thank you so much for helping, Nick

Parents
  • Let me try to explain this once more.

    The board you have (Adafruit Feather 32u4 Bluefruit) is an Arduino compatible board with two ICs, a ATmega32u4 (AVR) and the Nordic nRF51822. I guess the first is what you call "microcontroller", but actually both devices are microcontrollers. The nRF51822 is a system-on-chip, a microcontroller with a built-in radio, making it capable of doing wireless communciation. Here is a picture trying to explain your board:

    image description

    The reason you cannot put the code you posted above on any nRF51/52 devices, is that it is written for the Arduino compatible ATmega chip, to operate the custom firmware in the nRF51822 chip.

    To program any nRF51 or nRF52 chips, you should use the Nordic SDK and one of the supported IDEs (Keil, GCC or IAR). mBed is also supported, and this is more Arduino-like, but you will not have the same flexibility that you have with our SDK. You will also get better support when using our SDK.

    To program the board, you need a programmer/debugger that support the SWD interface. Our development kits (nRF51 DK and nRF52 DK) and the nRF51 dongle have an on-board debugger integrated on the board, allowing you to program the chip directly by connecting the board to your PC via USB.

    The link you provide only show Android code, this has nothing to do with the nRF devices. On the same page, you can however find a few articles about how to create applications using our SDK and the nRF51 dongle.

    Best regards,

    Jørgen

  • So now I understand better what's going on here. Thx. Since I already have the code for the ATmega chip. I would need to learn how to write my own java code in Android Studio for my Android phone. To connect to the nrF51..Nordic chip. That code would connect to the Nordic chip first, it would have 2 buttons, one sends the char (o) and the other one would send the char (c) for instance. The chip would then just pass those send characters on to the ATmega chip via spi, right? Can you guys help me writing the java code to connect to the Nordic chip? I have some Android developer samples put into Android Studio, but none of any of the codes will connect or even find the BLE device. The only code finding and connecting to the BLE device is the app from Nordic the nRFConnect which I found in the google play store. That's the only one working. Is there a special trick to it or what? So if you guys would help me to write a very small app to connect to the Nordic chip, then I would need to learn how to write the code for the 2 buttons, that's it. I'd be in business. Can I get support for that? If you think that I should rather buy another Nordic chip like the Dongle or so, I could do that too. But I still would need support in writing the code with you guys sdk and IDE. So I need support no matter what. So its your call now with what you want to support me with. Please let me know. Oh, I just today downloaded the SDK nRF5_SDK_12.2.0_f012efa, unzipped it. Inside it has all kinds of stuff and the MDK's nRF5x_MDK_8_11_1_Keil4 and nRF5x_MDK_8_11_1_IAR. I also installed JLink_V512g all 5 of them tools. However, the MDK will not install. It claims that it's finished installing but I can't find it anywhere. Isn't the MDK the actual IDE for the chip to write the program for it? Can't get it to install on my win10 home edition. Any idea how to help me? Thanks, Nick

Reply
  • So now I understand better what's going on here. Thx. Since I already have the code for the ATmega chip. I would need to learn how to write my own java code in Android Studio for my Android phone. To connect to the nrF51..Nordic chip. That code would connect to the Nordic chip first, it would have 2 buttons, one sends the char (o) and the other one would send the char (c) for instance. The chip would then just pass those send characters on to the ATmega chip via spi, right? Can you guys help me writing the java code to connect to the Nordic chip? I have some Android developer samples put into Android Studio, but none of any of the codes will connect or even find the BLE device. The only code finding and connecting to the BLE device is the app from Nordic the nRFConnect which I found in the google play store. That's the only one working. Is there a special trick to it or what? So if you guys would help me to write a very small app to connect to the Nordic chip, then I would need to learn how to write the code for the 2 buttons, that's it. I'd be in business. Can I get support for that? If you think that I should rather buy another Nordic chip like the Dongle or so, I could do that too. But I still would need support in writing the code with you guys sdk and IDE. So I need support no matter what. So its your call now with what you want to support me with. Please let me know. Oh, I just today downloaded the SDK nRF5_SDK_12.2.0_f012efa, unzipped it. Inside it has all kinds of stuff and the MDK's nRF5x_MDK_8_11_1_Keil4 and nRF5x_MDK_8_11_1_IAR. I also installed JLink_V512g all 5 of them tools. However, the MDK will not install. It claims that it's finished installing but I can't find it anywhere. Isn't the MDK the actual IDE for the chip to write the program for it? Can't get it to install on my win10 home edition. Any idea how to help me? Thanks, Nick

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