I posted on the Adafruit forum but there doesn't seem to be much support there. Since the module is based on nrF I'm hoping this community can help out.
For the most part my BLE application is working well. However, there is inconsistency when it comes to initializing the BLE module when powered (either by USB to PC or outlet). Based on the monitor, it seems to not reset at times which prevents it from initializing. I am able to see the 'Adafruit BlueFruit LE' advertised on my phone and connect to it but any functionality of my application doesn't work. I know it initializes correctly when I see the device advertised as my own custom name 'ZoneFirst BLE'. This behavior of initializing/not initializing happens if I'm connecting the device via USB to my PC with the serial running or powering off an outlet. In either case I have to power it off and back on for it to correctly function. This is concerning me if we plan to move to production with this module MDBT40. Thank you!
- BLE UART Friend with 0.8.0 Software from Adafruit
- nrf51822 module MDBT40 by Raytac
- Arduino Uno
- Arduino 1.8.5 IDE
Debugger serial for sucess/fail:
/*********************************************************************
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 <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"
/*=========================================================================*/
// Pin Configuration and Firmware Declarations
#define MOTOR_PINA 2
#define MOTOR_PINB 3
// Create the bluefruit object, either software serial...uncomment these lines
// We will use software serial
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(Serial1, 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);
}
/**************************************************************************/
/*!
@brief Sets up the HW an the BLE module (this function is called
automatically on startup)
*/
/**************************************************************************/
void setup(void)
{
pinMode(MOTOR_PINA, OUTPUT); // motor output pin 2
pinMode(MOTOR_PINB, OUTPUT); // motor output pin 3
delay(500);
Serial.begin(9600);
Serial.println(F("ZoneFirst BLE App"));
Serial.println(F("---------------------------------------"));
/* Initialise the module */
Serial.print(F("Initialising the Bluefruit LE module: "));
if ( !ble.begin() )
{
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"));
}
}
/* Change the device name to make it easier to find */
Serial.println(F("Setting device name to 'ZoneFirst BLE': "));
if (! ble.sendCommandCheckOK(F("AT+GAPDEVNAME=ZoneFirst BLE")) ) {
error(F("Could not set device name?"));
}
/* 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 UART mode"));
// Serial.println(F("Then Enter characters to send to Bluefruit"));
Serial.println();
ble.verbose(false); // debug info is a little annoying after this point!
/* Wait for connection */
while (! ble.isConnected()) {
delay(500);
}
// LED Activity command is only supported from 0.6.6
if ( ble.isVersionAtLeast(MINIMUM_FIRMWARE_VERSION) )
{
// Change Mode LED Activity
Serial.println(F("******************************"));
Serial.println(F("Change LED activity to " MODE_LED_BEHAVIOUR));
ble.sendCommandCheckOK("AT+HWModeLED=" MODE_LED_BEHAVIOUR);
Serial.println(F("******************************"));
}
}
/**************************************************************************/
/*!
@brief Constantly poll for new command or response data
*/
/**************************************************************************/
void loop(void)
{
// Check for incoming characters from Bluefruit
ble.println("AT+BLEUARTRX");
ble.readline();
if (strcmp(ble.buffer, "OK") == 0) {
// no data
return;
}
// Some data was found, its in the buffer
Serial.print(F("[Recv] ")); Serial.println(ble.buffer);
ble.waitForOK();
// do this for the actuator on the damper
if (strcmp(ble.buffer, "O") == 0) // open the damper, hex 0x4f = "O"
{
digitalWrite(2, LOW);
digitalWrite(3, HIGH);
}
else if (strcmp(ble.buffer, "C") == 0) // close the damper, hex 0x43 = "C"
{
digitalWrite(2, HIGH);
digitalWrite(3, LOW);
}
else if (strcmp(ble.buffer, "H") == 0) // halfway open the damper, hex 0x48 = "H"
{
digitalWrite(2, LOW);
digitalWrite(3, HIGH);
delay(6000);
digitalWrite(2, HIGH);
digitalWrite(3, LOW);
delay(3000);
digitalWrite(2, LOW);
digitalWrite(3, LOW);
}
}
// COMMON SETTINGS // ---------------------------------------------------------------------------------------------- // These settings are used in both SW UART, HW UART and SPI mode // ---------------------------------------------------------------------------------------------- #define BUFSIZE 128 // Size of the read buffer for incoming data #define VERBOSE_MODE true // If set to 'true' enables debug output // SOFTWARE UART SETTINGS // ---------------------------------------------------------------------------------------------- // The following macros declare the pins that will be used for 'SW' serial. // You should use this option if you are connecting the UART Friend to an UNO // ---------------------------------------------------------------------------------------------- #define BLUEFRUIT_SWUART_RXD_PIN 9 // Required for software serial! #define BLUEFRUIT_SWUART_TXD_PIN 10 // Required for software serial! #define BLUEFRUIT_UART_CTS_PIN 11 // Required for software serial! #define BLUEFRUIT_UART_RTS_PIN -1 // Optional, set to -1 if unused // HARDWARE UART SETTINGS // ---------------------------------------------------------------------------------------------- // The following macros declare the HW serial port you are using. Uncomment // this line if you are connecting the BLE to Leonardo/Micro or Flora // ---------------------------------------------------------------------------------------------- #ifdef Serial1 // this makes it not complain on compilation if there's no Serial1 #define BLUEFRUIT_HWSERIAL_NAME Serial1 #endif // SHARED UART SETTINGS // ---------------------------------------------------------------------------------------------- // The following sets the optional Mode pin, its recommended but not required // ---------------------------------------------------------------------------------------------- #define BLUEFRUIT_UART_MODE_PIN 12 // Set to -1 if unused // SHARED SPI SETTINGS // ---------------------------------------------------------------------------------------------- // The following macros declare the pins to use for HW and SW SPI communication. // SCK, MISO and MOSI should be connected to the HW SPI pins on the Uno when // using HW SPI. This should be used with nRF51822 based Bluefruit LE modules // that use SPI (Bluefruit LE SPI Friend). // ---------------------------------------------------------------------------------------------- #define BLUEFRUIT_SPI_CS 8 #define BLUEFRUIT_SPI_IRQ 7 #define BLUEFRUIT_SPI_RST 4 // Optional but recommended, set to -1 if unused // SOFTWARE SPI SETTINGS // ---------------------------------------------------------------------------------------------- // The following macros declare the pins to use for SW SPI communication. // This should be used with nRF51822 based Bluefruit LE modules that use SPI // (Bluefruit LE SPI Friend). // ---------------------------------------------------------------------------------------------- #define BLUEFRUIT_SPI_SCK 13 #define BLUEFRUIT_SPI_MISO 12 #define BLUEFRUIT_SPI_MOSI 11
