The purpose of this project is simply to use the bluetooth controller (smartphone app) in order to change the color of led lights (neopixels) but currently I don't even see any sort of data transmission over the serial monitor. Below are the devices used:
https://www.adafruit.com/product/2487
https://www.adafruit.com/product/659
https://www.adafruit.com/product/1463
These devices are wired as follows:
Flora RX #0 -> BTE TX
Flora TX #1 -> BTE RX
Flora GND -> BTE GND
Flora 3.3V -> BTE 3.3V
Flora GND -> NEO PXL GND
Flora VBATT -> NEO PXL 5V
Flora #6 -> NEO PXL Data In
I've done a fair amount of reading on the learn section and came across this guide:
https://learn.adafruit.com/adafruit-flo ... ample-code
It mentions how to setup the BTE module with the flora and goes over some basics. The concern is that the example code I'm using has multiple sections, or "tabs" with each having their own portion, and there's no mention of this on the guide. While not changing colors, sending RGB values, or even factory resetting the BT module, this is the code I have:
Code: Select all
/*********************************************************************
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>
#include <Adafruit_NeoPixel.h>
#include "Adafruit_BLE.h"
#include "Adafruit_BluefruitLE_SPI.h"
#include "Adafruit_BluefruitLE_UART.h"
#if SOFTWARE_SERIAL_AVAILABLE
#include <SoftwareSerial.h>
#endif
#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.
PIN Which pin on the Arduino is connected to the NeoPixels?
NUMPIXELS How many NeoPixels are attached to the Arduino?
-----------------------------------------------------------------------*/
// #define FACTORYRESET_ENABLE 1
#define PIN 6
#define NUMPIXELS 16
#define BLUEFRUIT_HWSERIAL_NAME Serial1
/*=========================================================================*/
Adafruit_NeoPixel pixel = Adafruit_NeoPixel(NUMPIXELS, PIN);
// 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);
// turn off neopixel
pixel.begin(); // This initializes the NeoPixel library.
for(uint8_t i=0; i<NUMPIXELS; i++) {
pixel.setPixelColor(i, pixel.Color(0,0,0)); // off
}
pixel.show();
Serial.begin(115200);
Serial.println(F("Adafruit Bluefruit Neopixel Color Picker 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("***********************"));
// Set Bluefruit to DATA mode
Serial.println( F("Switching to DATA mode!") );
ble.setMode(BLUEFRUIT_MODE_DATA);
Serial.println(F("***********************"));
}
/**************************************************************************/
/*!
@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);
// Color
if (packetbuffer[1] == 'C') {
uint8_t red = packetbuffer[2];
uint8_t green = packetbuffer[3];
uint8_t blue = packetbuffer[4];
Serial.print ("RGB #");
if (red < 0x10) Serial.print("0");
Serial.print(red, HEX);
if (green < 0x10) Serial.print("0");
Serial.print(green, HEX);
if (blue < 0x10) Serial.print("0");
Serial.println(blue, HEX);
for(uint8_t i=0; i<NUMPIXELS; i++) {
pixel.setPixelColor(i, pixel.Color(red,green,blue));
}
pixel.show(); // This sends the updated pixel color to the hardware.
}
}Bluetoothconfig.h
Code: Select all
// 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
#define BLE_READPACKET_TIMEOUT 500 // Timeout in ms waiting to read a response
// 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 0 // Required for software serial!
#define BLUEFRUIT_SWUART_TXD_PIN 1 // Required for software serial!
#define BLUEFRUIT_UART_CTS_PIN -1 // 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 -1 // 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 11Code: Select all
#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"
#define PACKET_ACC_LEN (15)
#define PACKET_GYRO_LEN (15)
#define PACKET_MAG_LEN (15)
#define PACKET_QUAT_LEN (19)
#define PACKET_BUTTON_LEN (5)
#define PACKET_COLOR_LEN (6)
#define PACKET_LOCATION_LEN (15)
// READ_BUFSIZE Size of the read buffer for incoming packets
#define READ_BUFSIZE (20)
/* Buffer to hold incoming characters */
uint8_t packetbuffer[READ_BUFSIZE+1];
/**************************************************************************/
/*!
@brief Casts the four bytes at the specified address to a float
*/
/**************************************************************************/
float parsefloat(uint8_t *buffer)
{
float f = ((float *)buffer)[0];
return f;
}
/**************************************************************************/
/*!
@brief Prints a hexadecimal value in plain characters
@param data Pointer to the byte data
@param numBytes Data length in bytes
*/
/**************************************************************************/
void printHex(const uint8_t * data, const uint32_t numBytes)
{
uint32_t szPos;
for (szPos=0; szPos < numBytes; szPos++)
{
Serial.print(F("0x"));
// Append leading 0 for small values
if (data[szPos] <= 0xF)
{
Serial.print(F("0"));
Serial.print(data[szPos] & 0xf, HEX);
}
else
{
Serial.print(data[szPos] & 0xff, HEX);
}
// Add a trailing space if appropriate
if ((numBytes > 1) && (szPos != numBytes - 1))
{
Serial.print(F(" "));
}
}
Serial.println();
}
/**************************************************************************/
/*!
@brief Waits for incoming data and parses it
*/
/**************************************************************************/
uint8_t readPacket(Adafruit_BLE *ble, uint16_t timeout)
{
uint16_t origtimeout = timeout, replyidx = 0;
memset(packetbuffer, 0, READ_BUFSIZE);
while (timeout--) {
if (replyidx >= 20) break;
if ((packetbuffer[1] == 'A') && (replyidx == PACKET_ACC_LEN))
break;
if ((packetbuffer[1] == 'G') && (replyidx == PACKET_GYRO_LEN))
break;
if ((packetbuffer[1] == 'M') && (replyidx == PACKET_MAG_LEN))
break;
if ((packetbuffer[1] == 'Q') && (replyidx == PACKET_QUAT_LEN))
break;
if ((packetbuffer[1] == 'B') && (replyidx == PACKET_BUTTON_LEN))
break;
if ((packetbuffer[1] == 'C') && (replyidx == PACKET_COLOR_LEN))
break;
if ((packetbuffer[1] == 'L') && (replyidx == PACKET_LOCATION_LEN))
break;
while (ble->available()) {
char c = ble->read();
if (c == '!') {
replyidx = 0;
}
packetbuffer[replyidx] = c;
replyidx++;
timeout = origtimeout;
}
if (timeout == 0) break;
delay(1);
}
packetbuffer[replyidx] = 0; // null term
if (!replyidx) // no data or timeout
return 0;
if (packetbuffer[0] != '!') // doesn't start with '!' packet beginning
return 0;
// check checksum!
uint8_t xsum = 0;
uint8_t checksum = packetbuffer[replyidx-1];
for (uint8_t i=0; i<replyidx-1; i++) {
xsum += packetbuffer[i];
}
xsum = ~xsum;
// Throw an error message if the checksum's don't match
if (xsum != checksum)
{
Serial.print("Checksum mismatch in packet : ");
printHex(packetbuffer, replyidx+1);
return 0;
}
// checksum passed!
return replyidx;
}
So the question is how can I establish communication between the BTE and flora? When I connect via the app, no notice of the connection is given. I'm aware that the serial is supposed to show the RGB values when they are received but not seeing them leads me to believe that the connections are incorrect or that the code isn't setup correctly for the flora; feeling more like the latter since I'm not fluent in Arduino coding. Factory reset was disabled since it didn't work. The attached picture shows all I get on serial monitor.
ps: I can post/draw a sketch if it will help with troubleshooting but I hope things are clear. Let me know if there's something that isn't clear and I'll add/edit accordingly.
Neopixel ring has been tested and the flora has been consistently used for testing other devices (such as GPS) successfully; the RX/TX and D6 pins are operational.
