nRF5 action!

[Nca78]

So I made a version of script with MySensors library, it's not a final version and needs some cleaning and improvements but it seems to work well (I didn't test so much yet :)) and shows basic usage. Comments should be enough to understand what to change to adapt to your board. Current script is for my board:

• BUTTON_1 on pin 1, it's a hall sensor for door so no pullup and sensing on up=>down and down=>up changes
• BUTTON_2 on pin 3, push button with pullup and debouncing, sensing only on up=>down when button is pressed. At the moment it just makes some light blinking to show it's detected.
• led on pin 2.

I join the main script file and the MyBoardNRF5 files, for using with MyBoardNRF5 nrf51822. Files to include are described in the main script file, but don't forget to add a weak attribute in the WInterrupt.c file before the GPIOTE_IRQHandler so it can be overridden.

__attribute__ ((weak))
void GPIOTE_IRQHandler()

On my Windows PC this file is in C:\Users[your user name]\AppData\Local\Arduino15\packages\sandeepmistry\hardware\nRF5\0.5.1\cores\nRF5

Main script file:

// Include app_gpiote and related files from NRF5 SDK 12
extern "C" {
#include "app_gpiote.h"
#include "nrf_gpio.h"
#include "app_error.h"
}

// Files to include from SDK:
// app_error_weak.h + .c
// app_gpiote.h + .c
// app_util.h
// nordic_common.h
// nrf_error.h
// nrf_gpio.h
// sdk_errors.h
// app_error.h + .c
//   for this last one (c file) I decided to stop the endless list of includes so I commented the following includes:
//   #include "sdk_errors.h", #include "nrf_log.h", #include "nrf_log_ctrl.h"  lines

#include <nrf.h>

#define IS_NRF51  //true if the target is an nRF51.  If an nRF52, then comment this line out!
#define APP_GPIOTE_MAX_USERS 1  // max users for app_gpiote, we only use one
#define MY_RADIO_NRF5_ESB
#define MY_NODE_ID 60   // To avoid getting a new ID at each flashing of the sensors...

#include <MySensors.h>


// variables for app_gpiote calls
uint32_t err_code;
static app_gpiote_user_id_t m_gpiote_user_id;
uint32_t PIN_BUTTON1_MASK; // Mask for PIN_BUTTON1 input
uint32_t PIN_BUTTON2_MASK; // Mask for PIN_BUTTON2 input

// defines variables for MySensors
#define SN "22Board Door Basic"
#define SV "0.2"
// Sensor messages
#define CHILD_ID_DOOR 1
MyMessage doorMsg(CHILD_ID_DOOR, V_TRIPPED);
bool last_sent_value;
bool door_status;
long last_button2_event = 0;

// Cause of interrupt
volatile byte interrupt_cause = 0;


// Settings to avoid killing coin cell in case of connection problem
#define MY_TRANSPORT_WAIT_READY_MS  10000
#define MY_SLEEP_TRANSPORT_RECONNECT_TIMEOUT_MS 5000

// Battery settings
#define BATTERY_ALERT_LEVEL 30  // (%) Will triple blink after sending data if battery is equal or below this level
// Parameters for VCC measurement
#define BATTERY_VCC_MIN  2400  // Minimum expected Vcc level, in milliVolts. 
#define BATTERY_VCC_MAX  2900  // Maximum expected Vcc level, in milliVolts.
// This a a coefficient to fix the imprecision of measurement of the battery voltage
#define BATTERY_COEF 1000.0f  // (reported voltage / voltage) * 1000
uint16_t currentBatteryPercent;
uint16_t lastBatteryPercent = -1;
// Enables/disables sleeps between sendings to optimize for CR2032 or similar coin cell
#define USE_COIN_CELL


// Called before initialization of the library
void before() {
  hwPinMode(LED_BUILTIN, OUTPUT_D0H1);
  blinkityBlink(2, 3);
}

// Setup node
void setup(void) {

  //Configure button pins as inputs
  nrf_gpio_cfg_input(PIN_BUTTON1, NRF_GPIO_PIN_NOPULL);
  nrf_gpio_cfg_input(PIN_BUTTON2, NRF_GPIO_PIN_PULLUP);
  APP_GPIOTE_INIT(APP_GPIOTE_MAX_USERS);               //Only initialize once. Increase value of APP_GPIOTE_MAX_USERS if needed

  // Initialize value of pin (for DRV5032 hall sensor HIGH = no magnet nearby = door opened);
  door_status = digitalRead(PIN_BUTTON1);
  last_sent_value = !door_status; // so we always send value in first loop

  // Registers user and pins we are "watching"
  //   gpiote_event_handler is handler called by interrupt, see method below
  PIN_BUTTON1_MASK = 1 << PIN_BUTTON1; // Set mask, will be used for registration and interrupt handler
  PIN_BUTTON2_MASK = 1 << PIN_BUTTON2; // Set mask, will be used for registration and interrupt handler
  //  app_gpiote_user_register(p_user_id, pins_low_to_high_mask, pins_high_to_low_mask, event_handler)
  //  to have no trigger for high=>low or low=>high change on your button, pass 0 instead
  //  here I check PIN_BUTTON1 on both low=>high and high=>low changes and PIN_BUTTON2 only on high=>low change when someone presses the button
  err_code = app_gpiote_user_register(&m_gpiote_user_id, PIN_BUTTON1_MASK, PIN_BUTTON1_MASK | PIN_BUTTON2_MASK, gpiote_event_handler);
  APP_ERROR_CHECK(err_code);  // will reset if user registration fails

  // Enable SENSE and interrupt
  err_code = app_gpiote_user_enable(m_gpiote_user_id);
  APP_ERROR_CHECK(err_code);  // will reset if SENSE enabling fails

  // initialize last event for button2 debounce
  last_button2_event = millis();
}

void presentation()  {
  sendSketchInfo(SN, SV);
  present(CHILD_ID_DOOR, S_DOOR);
}

// Sleep between sendings to preserve coin cell
//  if not using button cell just make sure the #define USE_COIN_CELL is commented at the beginning of the sketch and it will do nothing
void sleepForCoinCell() {
#ifdef USE_COIN_CELL
  sleep(400);
#endif
}

// main loop
void loop(void)
{
  // for sending battery level at first run
  if (lastBatteryPercent < 0) {
    sendBatteryStatus();
    sleepForCoinCell();
  }

  if (interrupt_cause == PIN_BUTTON1) {
    // if door status changed, we send door message
    if (door_status != last_sent_value) {
      sendDoorStatus();
    }
  }
  else if (interrupt_cause == PIN_BUTTON2) {
    if (millis() < last_button2_event || (millis() - last_button2_event > 100)) {
      last_button2_event = millis();
      blinkityBlink(2, 3); // not so useful, just for testing :)
    }
  }
  else {  // end of sleeping period, we send battery level
    sendBatteryStatus();
  }

  // Low battery warning or confirm status of door
  if (lastBatteryPercent < BATTERY_ALERT_LEVEL) {
    blinkityBlink(3, 1);
  }
  else {
    blinkityBlink((last_sent_value == true ? 2 : 1), 1);
  }

  // Go to sleep
  mySleepPrepare();
  interrupt_cause = 0; // reset interrupt cause
  sleep(300000);
}

void sendDoorStatus() {
  send(doorMsg.set(door_status));
  last_sent_value = door_status;
}

#define CHILD_ID_VOLT 254
MyMessage voltMsg(CHILD_ID_VOLT, V_VOLTAGE);
void sendBatteryStatus() {
  uint16_t batteryVoltage = hwCPUVoltage();

  if (batteryVoltage > BATTERY_VCC_MAX) {
    currentBatteryPercent = 100;
  }
  else if (batteryVoltage < BATTERY_VCC_MIN) {
    currentBatteryPercent = 0;
  }
  else {
    currentBatteryPercent = (100 * (batteryVoltage - BATTERY_VCC_MIN)) / (BATTERY_VCC_MAX - BATTERY_VCC_MIN);
  }
  if (currentBatteryPercent != lastBatteryPercent) {
    sendBatteryLevel(currentBatteryPercent);
    lastBatteryPercent = currentBatteryPercent;
  }
}

// "Interrupt handler"
//  not real handler, but call inside handler to
void gpiote_event_handler(uint32_t event_pins_low_to_high, uint32_t event_pins_high_to_low)
{
  MY_HW_RTC->CC[0] = (MY_HW_RTC->COUNTER + 2); // Taken from d0016 example code, ends the sleep delay
  if ((PIN_BUTTON1_MASK & event_pins_low_to_high) || (PIN_BUTTON1_MASK & event_pins_high_to_low)) {
    interrupt_cause = PIN_BUTTON1;
    door_status = !door_status;
  }
  else if ((PIN_BUTTON2_MASK & event_pins_low_to_high) || (PIN_BUTTON2_MASK & event_pins_high_to_low)) {
    interrupt_cause = PIN_BUTTON2;
  }
}



/**
   Utility functions for NRF51/52, from nerverdie's code here
   https://forum.mysensors.org/topic/6961/nrf5-bluetooth-action/1307
*/


void disableNfc() {  //only applied to nRF52

#ifndef IS_NRF51
  //Make pins 9 and 10 usable as GPIO pins.
  NRF_NFCT->TASKS_DISABLE = 1; //disable NFC
  NRF_NVMC->CONFIG = 1; // Write enable the UICR
  NRF_UICR->NFCPINS = 0; //Make pins 9 and 10 usable as GPIO pins.
  NRF_NVMC->CONFIG = 0; // Put the UICR back into read-only mode.
#endif
}

void turnOffRadio() {
  NRF_RADIO->TASKS_DISABLE = 1;
  while (!(NRF_RADIO->EVENTS_DISABLED)) {}  //until radio is confirmed disabled
}

void turnOffUarte0() {
#ifndef IS_NRF51
  NRF_UARTE0->TASKS_STOPRX = 1;
  NRF_UARTE0->TASKS_STOPTX = 1;
  NRF_UARTE0->TASKS_SUSPEND = 1;
  NRF_UARTE0->ENABLE = 0; //disable UART0
  while (NRF_UARTE0->ENABLE != 0) {}; //wait until UART0 is confirmed disabled.
#endif

#ifdef IS_NRF51
  NRF_UART0->TASKS_STOPRX = 1;
  NRF_UART0->TASKS_STOPTX = 1;
  NRF_UART0->TASKS_SUSPEND = 1;
  NRF_UART0->ENABLE = 0; //disable UART0
  while (NRF_UART0->ENABLE != 0) {}; //wait until UART0 is confirmed disabled.
#endif
}

void turnOffAdc() {
#ifndef IS_NRF51
  if (NRF_SAADC->ENABLE) { //if enabled, then disable the SAADC
    NRF_SAADC->TASKS_STOP = 1;
    while (NRF_SAADC->EVENTS_STOPPED) {} //wait until stopping of SAADC is confirmed
    NRF_SAADC->ENABLE = 0; //disable the SAADC
    while (NRF_SAADC->ENABLE) {} //wait until the disable is confirmed
  }
#endif
}


void turnOffHighFrequencyClock() {
  NRF_CLOCK->TASKS_HFCLKSTOP = 1;
  while ((NRF_CLOCK->HFCLKSTAT) & 0x0100) {}  //wait as long as HF clock is still running.
}


void mySleepPrepare()
{
  turnOffHighFrequencyClock();
  turnOffRadio();
  turnOffUarte0();
}


void blinkityBlink(uint8_t pulses, uint8_t repetitions) {
  for (int x = 0; x < repetitions; x++) {
    // wait only in case there's been a previous blink
    if (x > 0) {
      sleep(500);
    }
    for (int i = 0; i < pulses; i++) {
      // wait only in case there's been a previous blink
      if (i > 0) {
        sleep(100);
      }
      digitalWrite(LED_BUILTIN, HIGH);
      wait(20);
      digitalWrite(LED_BUILTIN, LOW);
    }
  }
}

MyBoardNRF5.h

/*
  If you don't use an nRF5 board, you can ignore this file.
  This file was part of the "My Sensors nRF5 Boards" board repository
  available at https://github.com/mysensors/ArduinoBoards If you have
  questions, please refer the documentation at
  https://github.com/mysensors/ArduinoHwNRF5 first.
  This file is compatible with ArduinoHwNRF5 >= 0.2.0
  This file allows you to change the pins of internal hardware, like the
  serial port, SPI bus or Wire bus.
  All pins referenced here are mapped via the "g_ADigitalPinMap" Array
  defined in "MyBoardNRF5.cpp" to pins of the MCU.
  
  As an example, if you have at the third position in "g_ADigitalPinMap" the
  12, then all ports referenced in Arduino with 2 are mapped to P0.12. If you
  don't change the "g_ADigitalPinMap" Array, the Arduino pins 0..31 are
  translated to P0.00..P0..31.
   
  ###########################################################################
 
  This file is compatible with ArduinoHwNRF5 > 0.1.0
  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
  Copyright (c) 2016 Sandeep Mistry. All right reserved.
  Copyright (c) 2017 Sensnology AB. All right reserved.
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU Lesser General Public License for more details.
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#ifndef _MYBOARDNRF5_H_
#define _MYBOARDNRF5_H_

#ifdef __cplusplus
extern "C"
{
#endif // __cplusplus

// Number of pins defined in PinDescription array
#define PINS_COUNT           (32u)
#define NUM_DIGITAL_PINS     (32u)
#define NUM_ANALOG_INPUTS    (8u)
#define NUM_ANALOG_OUTPUTS   (8u)

/* 
 *  LEDs
 *  
 *  This is optional
 *  
 *  With My Sensors, you can use
 *  hwPinMode() instead of pinMode()
 *  hwPinMode() allows to use advanced modes like OUTPUT_H0H1 to drive LEDs.
 *  https://github.com/mysensors/MySensors/blob/development/drivers/NRF5/nrf5_wiring_constants.h
 *
 */
#define PIN_LED1                (2)
// #define PIN_LED2                (25)
// #define PIN_LED3                (26)
// #define PIN_LED4                (27)
// #define PIN_LED5                (12)
// #define PIN_LED6                (14)
// #define PIN_LED7                (15)
// #define PIN_LED8                (16)
// #define USER_LED                (PIN_LED2)
// #define RED_LED                 (PIN_LED3)
// #define GREEN_LED               (PIN_LED4)
// #define BLUE_LED                (PIN_LED1)
// #define BLE_LED                 BLUE_LED
#define LED_BUILTIN          PIN_LED1

/* 
 *  Buttons
 *  
 *  This is optional
 */
#define PIN_BUTTON1             (1)
#define PIN_BUTTON2             (3)
// #define PIN_BUTTON3             (5)
// #define PIN_BUTTON4             (6)
// #define PIN_BUTTON5             (7)
// #define PIN_BUTTON6             (8)
// #define PIN_BUTTON7             (9)
// #define PIN_BUTTON8             (10)

/* 
 * Analog ports
 *  
 * If you change g_APinDescription, replace PIN_AIN0 with
 * port numbers mapped by the g_APinDescription Array.
 * You can add PIN_AIN0 to the g_APinDescription Array if
 * you want provide analog ports MCU independed, you can add
 * PIN_AIN0..PIN_AIN7 to your custom g_APinDescription Array
 * defined in MyBoardNRF5.cpp
 */
 /*
static const uint8_t A0  = ADC_A0;
static const uint8_t A1  = ADC_A1;
static const uint8_t A2  = ADC_A2;
static const uint8_t A3  = ADC_A3;
static const uint8_t A4  = ADC_A4;
static const uint8_t A5  = ADC_A5;
static const uint8_t A6  = ADC_A6;
static const uint8_t A7  = ADC_A7;
*/
/*
 * Serial interfaces
 * 
 * RX and TX are required.
 * If you have no serial port, use unused pins
 * CTS and RTS are optional.
 */
#define PIN_SERIAL_RX       (29)
#define PIN_SERIAL_TX       (28)
// #define PIN_SERIAL_CTS      (13)
// #define PIN_SERIAL_RTS      (14)

/*
 * SPI Interfaces
 * 
 * This is optional
 * 
 * If SPI is defined MISO, MOSI, SCK are required
 * SS is optional and can be used in your sketch.
 */
#define SPI_INTERFACES_COUNT 0

#define PIN_SPI_MISO         (6)
#define PIN_SPI_MOSI         (3)
#define PIN_SPI_SCK          (4)
#define PIN_SPI_SS           (5)

static const uint8_t SS   = PIN_SPI_SS;
static const uint8_t MOSI = PIN_SPI_MOSI;
static const uint8_t MISO = PIN_SPI_MISO;
static const uint8_t SCK  = PIN_SPI_SCK;

/*
 * Wire Interfaces
 *
 * This is optional
 */
#define WIRE_INTERFACES_COUNT 1

#define PIN_WIRE_SDA         (9u)
#define PIN_WIRE_SCL         (10u)
/*
#define PIN_WIRE_SDA1        (15u)
#define PIN_WIRE_SCL1        (16u)
*/
static const uint8_t SDA = PIN_WIRE_SDA;
static const uint8_t SCL = PIN_WIRE_SCL;

#ifdef __cplusplus
}
#endif

#endif

MyBoardNRF5.cpp

/*
  If you don't use an nRF5 board, you can ignore this file.
  
  This file was part of the "My Sensors nRF5 Boards" board repository
  available at https://github.com/mysensors/ArduinoBoards If you have
  questions, please refer the documentation at
  https://github.com/mysensors/ArduinoHwNRF5 first.
  
  This file is compatible with ArduinoHwNRF5 >= 0.2.0
  This file allows you to change the relation between pins referenced in
  the Arduino IDE (0..31) and pins of the nRF5 MCU (P0.00..P0.31).
  
  If you can live with addressing the GPIO pins by using the Arduino pins
  0..31 instead of a custom mapping, don't change this file. If you have
  a lot of Arduino code with fixed pin numbers and you need to map these
  pins to specific pins of the nRF5 MCU; you need to change this file.
  
  If you fill the "g_APinDescription" Array with numbers between 0..31,
  the Arduino pins 0..31 are assigned to pins P0.00..P0.31 of the MCU.
  
  As an example, if you need to change the pin mapping for Arduino pin 5
  to P0.12 of the MCU, you have to write the 12 after PORT0 into the sixth
  position in the  "g_APinDescription" Array.
   
  The extended attributes only affects the nRF5 variants provided with
  official Arduino boards. The arduino-nrf5 variant ignores the extended
  attributes.
    
  The pin mapping effects commands like "pinMode()", "digitalWrite()",
  "analogRead()" and "analogWrite()".
  
  If you change the pin mapping, you have to modify the pins in
  "MyBoardNRF5.h". Especially the analog pin mapping must be replaced with
  your pin numbers by replacing PIN_AIN0..7 with a number of your mapping
  array. You can use the constants PIN_AIN0..7 in the "g_APinDescription"
  Array if you want to reference analog ports MCU independent. You cannot
  use the pins P0.00 and P0.01 for GPIO, when the 32kHz crystal is connected.
  
  ###########################################################################
  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
  Copyright (c) 2016 Arduino Srl.  All right reserved.
  Copyright (c) 2017 Sensnology AB. All right reserved.
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU Lesser General Public License for more details.
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/



#ifdef MYBOARDNRF5
#include <variant.h>

/*
 * Pins descriptions. Attributes are ignored by arduino-nrf5 variant. 
 * Definition taken from Arduino Primo Core with ordered ports
 */
const PinDescription g_APinDescription[]=
{
  { PORT0,  0, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, PWM0, NOT_ON_TIMER},  // AREF0 ADC/LPCOMP reference input 0
  { PORT0,  1, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), ADC_A2, PWM1, NOT_ON_TIMER},
  { PORT0,  2, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), ADC_A3, PWM2, NOT_ON_TIMER},
  { PORT0,  3, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), ADC_A4, PWM3, NOT_ON_TIMER},
  { PORT0,  4, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), ADC_A5, PWM4, NOT_ON_TIMER},
  { PORT0,  5, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), ADC_A6, PWM5, NOT_ON_TIMER},
  { PORT0,  6, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), ADC_A7, PWM6, NOT_ON_TIMER}, // AREF1 ADC/LPCOMP reference input 1
  { PORT0,  7, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, PWM7, NOT_ON_TIMER},
  { PORT0,  8, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, PWM8, NOT_ON_TIMER},
  { PORT0,  9, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, PWM9, NOT_ON_TIMER}, 
  { PORT0, 10, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, PWM10, NOT_ON_TIMER},
  { PORT0, 11, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, PWM11, NOT_ON_TIMER},
  { PORT0, 12, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 13, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 14, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 15, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 16, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 17, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 18, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 19, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 20, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 21, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 22, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 23, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 24, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 25, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 26, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), ADC_A0, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 27, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), ADC_A1, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 28, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER},
  { PORT0, 29, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM), No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER}
};

// Don't remove this line
#include <compat_pin_mapping.h>

#endif

[alowhum]

I'm struggling to get my EByte NRF52 to work. I'm on a mac, so it should be easy..

I installed the two boards in the Arduino IDE.
https://github.com/sandeepmistry/arduino-nRF5
https://github.com/mysensors/ArduinoBoards

Then I carefully soldered some wires on it, and connected it to my ST-Link V2:
gnd ->gnd (in the corner)
3.3v -> vcc (in the same corner)
SWDIO -> SWDIO
SWDCLK -> SWDCLK

Downloaded the example app with three files in one folder (like the post above this one)

• Main file
• MyBoardNRF5.h
• MyBoardNRF5.cpp

In Arduino I set things up:

• Board: "MyBoardNRF5 NRF52832"
• Reset: "don't enable"
• Bootloader/SD: "none"
• Low frequency clock: "RC Oscilator" (tried others too)
• Port: none
• Programmer: ST-Link V2

Then I try "sketch -> upload via programmer"
I tried to 'wipe' the chip by clicking "tools -> burn bootloader"

I always get:

Open On-Chip Debugger 0.10.0-dev-gdc53227 (2016-04-09-13:45)
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
debug_level: 2
0x4000
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
adapter speed: 10000 kHz
Info : Unable to match requested speed 10000 kHz, using 4000 kHz
Info : Unable to match requested speed 10000 kHz, using 4000 kHz
Info : clock speed 4000 kHz
Info : STLINK v2 JTAG v19 API v2 SWIM v4 VID 0x0483 PID 0x3748
Info : using stlink api v2
Info : Target voltage: 3.242857
Info : nrf52.cpu: hardware has 0 breakpoints, 2 watchpoints
Error: timed out while waiting for target halted
TARGET: nrf52.cpu - Not halted
in procedure 'program' 
in procedure 'reset' called at file "embedded:startup.tcl", line 478
in procedure 'ocd_bouncer'

embedded:startup.tcl:454: Error: ** Unable to reset target **
in procedure 'program' 
in procedure 'program_error' called at file "embedded:startup.tcl", line 479
at file "embedded:startup.tcl", line 454
the selected serial port at file "embedded:startup.tcl", line 454
 does not exist or your board is not connected

I found loads of things online and in this thread.

• Could it be some kind of security bit that needs to be erased?
• I also suspect I have not connected it properly? Does the board have a power / indicator LED that should light up when its connected to power? Nothing lights up currently..
• Does the STLink V2 not provide enough power?
• I replaced the wires. Same problem.

[NeverDie]

@alowhum said in nRF5 Bluetooth action!:

STLink V2

I can't comment on the STLink V2, but if using a JTAG, you want to power the module independently from the programmer, because the programmer is meant to sense the voltage there more than to supply it. Maybe worth a try? Looking back, I've often thought it may be the reason why my early attempts with the STlink V2 failed. At least it's something you can look into while you wait for the cavalry to come rescue you.

Also, not sure as to whether running on a Mac is a good idea.

[alowhum]

W00t! Hurray! Nevermind. I just tried my other module, and that one worked fine!

Open On-Chip Debugger 0.10.0-dev-gdc53227 (2016-04-09-13:45)
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
debug_level: 2
0x4000
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
adapter speed: 10000 kHz
Info : Unable to match requested speed 10000 kHz, using 4000 kHz
Info : Unable to match requested speed 10000 kHz, using 4000 kHz
Info : clock speed 4000 kHz
Info : STLINK v2 JTAG v19 API v2 SWIM v4 VID 0x0483 PID 0x3748
Info : using stlink api v2
Info : Target voltage: 3.239128
Info : nrf52.cpu: hardware has 6 breakpoints, 4 watchpoints
nrf52.cpu: target state: halted
target halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0xfffffffe msp: 0xfffffffc
** Programming Started **
auto erase enabled
Info : nRF51822-QFN48(build code: B00) 512kB Flash
Warn : using fast async flash loader. This is currently supported
Warn : only with ST-Link and CMSIS-DAP. If you have issues, add
Warn : "set WORKAREASIZE 0" before sourcing nrf51.cfg to disable it
nrf52.cpu: target state: halted
target halted due to breakpoint, current mode: Thread 
xPSR: 0x61000000 pc: 0x2000001e msp: 0xfffffffc
wrote 4096 bytes from file /var/folders/pg/bjymtmv12dv77vh__zxyvs600000gn/T/arduino_build_362545/MyBoardNRF5.ino.hex in 0.215516s (18.560 KiB/s)
** Programming Finished **
** Verify Started **
nrf52.cpu: target state: halted
target halted due to breakpoint, current mode: Thread 
xPSR: 0x61000000 pc: 0x2000002e msp: 0xfffffffc
verified 2768 bytes in 0.065170s (41.478 KiB/s)
** Verified OK **
** Resetting Target **
shutdown command invoked

I had to do "burn bootloader" once to remove the security. And then it worked!

Hmm "reset enable" is still turned on. What does that do exactly?

[NeverDie]

Glad you found the breakout board useful. I hesitated to post it, thinking it might be too "easy," and it never did get many likes.

[alowhum]

@neverdie: yes very useful! I was thinking I should buy some, and wanted to explore which ones could be bought without a credit card (Europe..).

Perhaps you can entice some Chinese manuafacturer to put create a lot of them and then sell them on Aliexpress ;-)

[mfalkvidd]

@neverdie I think these are your design? Bought some when I was ordering some other stuff from Pcbway but haven't gotten around to using them yet.

[NeverDie]

Yup. Those little boards are really quite handy.

Thanks for the photo! :)

[Mars Warrior]

Nice indeed. I was just about to order some of those breakouts after receiving 4 Ebyte modules (€8 total).

But just to make sure (I didn't read the complete thread...), the capacitors for DEC1, DEC3 and DEC4 are already present on the Ebyte module, so no need to add these on your breakout, @NeverDie ?

[NeverDie]

No need to add anything not already on the board.

[Omemanti]

You could add some inductors for dcdc mode

[Mars Warrior]

@omemanti Yes I will. This is a long thread to catch up ;-), but I did find that the latest revision of the breakout added room for the inductors to use the DCDC mode.

I guess it takes some more reading & doing to get the firmware loaded on those Ebyte modules, but as others did that already I'm confident that that will be ok!

It will be my first nRF52 application.

[nagelc]

I'm working on a gesture sensor connected to a Fanstell BT832 via I2C. It is a Sparkfun APDS9960 breakout I have had lying around for a while. Unfortunately I can't get my sketch to compile. It gives 'Wire' was not declared in this scope.
Wire.h is included in the library and in the sketch. I'm using MyBoardNRF5 for an NRF52832. Using Arduino 1.8.3 on Windows 10.
There is a wire library in:
\AppData\Local\Arduino15\packages\sandeepmistry\hardware\nRF5\0.5.1\libraries\Wire
Which I think is the one that this sketch should be using.
Usually I can sort out the compile errors, but this one has me stumped.
Anyone have any suggestions?

[mfalkvidd]

@nagelc if you turn on "show verbose output during compilation+upload" in File->preferences you should get output telling which library the Arduino IDE has chosen.
The following sketch:

#define MY_RADIO_NRF5_ESB
#include <Wire.h>
#include <MySensors.h>
void setup() {
}

void loop() {
}

Gives this result for me:

Using library Wire at version 1.0 in folder: C:\Users\Micke\AppData\Local\Arduino15\packages\sandeepmistry\hardware\nRF5\0.5.1\libraries\Wire 
Using library MySensors at version 2.3.0-alpha in folder: R:\Documents\Arduino\libraries\MySensors

[nagelc]

@mfalkvidd Thanks. The verbose settings show it using the sandeepmistry library.
Wire.h works fine when I include it in my sketch. There is something about the way it is called in the Sparkfun library that fails to compile. I'll keep poking at it.

---

Duh . . . Found the problem!
I had left WIRE_INTERFACES_COUNT defined as 0 in MyBoardNRF5.h
It has to be #defined to 1 or more, or the sandeepmistry library doesn't extern Wire.
I looked at the SDA and SCL pin definitions in MyBoardNRF5.h, but missed setting the define for how many I2C interfaces were to be used.
Change #define WIRE_INTERFACES_COUNT 1. Now it compiles as expected.

[alowhum]

This might be a silly question, but: there there a number of NRF5 smart watches available on Aliexpress, like this one. Would it theoretically be possible to turn that into a MySensors smart watch? If you had access to the programming pins, for example?

[NeverDie]

@alowhum Usurping control of it by uploading code wouldn't be difficult, assuming access to the programming pins. However, taking control of the screen and making good use of it might be difficult

[scalz]

yes it's doable, maybe not for those who are not smd friendly. And once opened it should be less waterproof :sweat_smile:

[Toyman]

@alowhum there is a whole "movement" of people who are trying to reprogram them. Key issue is openability (how hard is to open it)
The last easily openable watches are based on nrf51822, but the good thing is that programming pins are easily accesable and even marked SWD/SCLCK.
Search Ali for ID107HR and google for "roger clark smartwatch"
I am yet to find a watch that would be both nrf52 based AND easily openable

[Toyman]

https://github.com/micooke/arduino-nRF5-smartwatches

Mark is a fantastic guy