Hi

I want to understand how the hwSPI works for the NRF52 and a RFM95 module.

I suppose that I can define more then one SPI interface in the file MyBoardNRF5.h so it looks like
SodaqMoja/SodaqCore-samd (should be updated to the NRF52 pins)

#ifdef ENABLE_SPI1
#define SPI_INTERFACES_COUNT 2
#else
#define SPI_INTERFACES_COUNT 1
#endif

// SPI
#define PIN_SPI_MISO         (42u)
#define PIN_SPI_SS           (43u)
#define PIN_SPI_MOSI         (44u)
#define PIN_SPI_SCK          (45u)

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

// SPI1
#define PIN_SPI1_MISO        (53u)
#define PIN_SPI1_SS          (54u)
#define PIN_SPI1_MOSI        (55u)
#define PIN_SPI1_SCK         (56u)

static const uint8_t MISO1 = PIN_SPI1_MISO;
static const uint8_t SS1   = PIN_SPI1_SS;
static const uint8_t MOSI1 = PIN_SPI1_MOSI;
static const uint8_t SCK1  = PIN_SPI1_SCK;

But I don't get how I will init the second SPI bus and point it to the RFM95 module. Guessing it should be define RFM95_SPI SPI1 or something like that?

#if !defined(RFM95_SPI)
#define RFM95_SPI hwSPI //!< default SPI
#endif

@omemanti Well it seems to start working now... Hopefully it works Havn't restart the gateway in 2 weeks now

I have recently installed an Ebyte E73 as my gateway with a DHT22. The problem is that I need to restart the gateway every 2 days and I can't figure out why. Can someone help me?

/**
   The MySensors Arduino library handles the wireless radio link and protocol
   between your home built sensors/actuators and HA controller of choice.
   The sensors forms a self healing radio network with optional repeaters. Each
   repeater and gateway builds a routing tables in EEPROM which keeps track of the
   network topology allowing messages to be routed to nodes.

   Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
   Copyright (C) 2013-2017 Sensnology AB
   Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors

   Documentation: http://www.mysensors.org
   Support Forum: http://forum.mysensors.org

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   version 2 as published by the Free Software Foundation.

 *******************************

   REVISION HISTORY


*/

// Enable debug prints
#define MY_DEBUG

// Enable serial gateway
#define MY_GATEWAY_SERIAL



// Set blinking period
#define MY_DEFAULT_LED_BLINK_PERIOD 300

// Enable and select radio type attached
//#define MY_RADIO_NRF24
#define MY_RADIO_NRF5_ESB
//#define MY_RADIO_RFM69
//#define MY_RADIO_RFM95

#include <SPI.h>
#include <MySensors.h>
#include "DHT.h"

int switch_led = 1;
#define ledPin 11
// Set this to the pin you connected the DHT's data pin to
#define DHT_DATA_PIN 02
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321


// Set this offset if the sensor has a permanent small offset to the real temperatures.
// In Celsius degrees (as measured by the device)
#define SENSOR_TEMP_OFFSET 0

// Sleep time between sensor updates (in milliseconds)
// Must be >1000ms for DHT22 and >2000ms for DHT11
static const uint64_t UPDATE_INTERVAL = 600000;

// Force sending an update of the temperature after n sensor reads, so a controller showing the
// timestamp of the last update doesn't show something like 3 hours in the unlikely case, that
// the value didn't change since;
// i.e. the sensor would force sending an update every UPDATE_INTERVAL*FORCE_UPDATE_N_READS [ms]
static const uint8_t FORCE_UPDATE_N_READS = 10;

#define CHILD_ID_HUM 1
#define CHILD_ID_TEMP 0

float lastTemp;
float lastHum;
uint8_t nNoUpdatesTemp;
uint8_t nNoUpdatesHum;
bool metric = true;

MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
DHT dht(DHT_DATA_PIN, DHTTYPE);

void setup()
{
    hwPinMode(LED_BUILTIN,OUTPUT_D0H1);

    NRF_CLOCK->INTENSET=B11;  //enable interrupts for EVENTS_HFCLKSTARTED and  EVENTS_LFCLKSTARTED
    NRF_CLOCK->TASKS_HFCLKSTART=1;  //start the high frequency crystal oscillator clock
    while (!(NRF_CLOCK->EVENTS_HFCLKSTARTED)) {} //wait until high frequency crystal oscillator clock is up to speed and working

    pinMode(PIN_LED1, OUTPUT);
    digitalWrite(PIN_LED1, HIGH);

    dht.begin(); // set data pin of DHT sensor
}

void presentation()
{
    // Send the sketch version information to the gateway and controller
    sendSketchInfo("Serial Gateway nrf52", "1.0");
    wait(500);
    // Register all sensors to gw (they will be created as child devices)
    present(CHILD_ID_TEMP, S_TEMP);
    present(CHILD_ID_HUM, S_HUM);
}

void loop()
{

    // Reading temperature or humidity takes about 250 milliseconds!
    // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
    float h = dht.readHumidity();
    // Read temperature as Celsius (the default)
    float t = dht.readTemperature();
    // Read temperature as Fahrenheit (isFahrenheit = true)
    float f = dht.readTemperature(true);
    Serial.print("Test print");
    // Check if any reads failed and exit early (to try again).
    if (isnan(h) || isnan(t) || isnan(f)) {
    //Serial.println("Failed to read from DHT sensor!");
    return;
    } else {
    send(msgHum.set(h, 1));
    send(msgTemp.set(t, 1));

    }

    wait(UPDATE_INTERVAL);
}

I have been able to use platformio for my project quite recently and still have some problems that I haven't had time to solve yet.

My platformio.ini for a NRF51832

[env:nrf51_dk]
platform = nordicnrf51
framework = arduino
board = rfduino
upload_protocol = stlink
board_build.f_cpu = 16000000L
build_flags = -DNRF51 -DMYBOARDNRF5 -I{build.path}

the only problem for my is that the flags

-DMYBOARDNRF5 -I{build.path}

dosen't work so the mynrf5board.h/c isn't read => I need to update the
vim ~/.platformio/packages/framework-arduinonordicnrf5/variants/Generic/variant.h myself.

1pcs NRF51822 2.4G Wireless Module Wireless Communication Module Bluetooth module / zigbee module / DMX512

$1.95

@neverdie Sorry, im a bit confused.

If im are going to use the BT832 for a battery sensor do I need to connet a 32 khz crystal like you did on the 10+ years wireless PIR Sensor (on just one set of 3 AA's!) project? But you have also written:
@neverdie said in nRF5 action!:

@alowhum IIRC, the crystal oscillator is only required by Bluetooth. For everything else, the internal resonator is sufficient.

How much more current are used if the crystal is not connected?

Can I use P00/P01 as a data pin instead of using the crystal?

@neverdie Im guessing that the BT832 dosen't have the 32.768 khz crystal but the inductors?

The datasheet says

Standby current consumption is important for battery-powered product. We suggest adding a 32.768 kHz crystal 
and 2 capacitors as shown in the upper left corner of the evaluation board schematics. The 32MHz main clock 
won’t be active at idle state to save power.

Two inductors required for DCDC converter are inside BT832 module. You can enable DCDC to lower
power consumption.

@NeverDie How do I know which nRF52832 board I should use?

Does the CFsunbird-nRF52832 has the DC/DC inductors?
Or can I use nRF51822?

Want a cheap chip, easy to solder (Have a couple of Ebyte e-73 but they take some time to solder and if I understand correctly, the DC / DC inductors are missing?)

1pcs NRF51822 2.4G Wireless Module Wireless Communication Module Bluetooth module / zigbee module / DMX512

$1.95

@monte But you solve your issue with the WT15822 board? Can you please share your sketch?

Is the range good of the WT15822 board?

I have started sketching to create a couple of new simple temp / hum sensors (WT15822, si7021 and cr2032) and want to know if I can use WT15822 before I order a pcb

Hi.

I have read https://devzone.nordicsemi.com/b/blog/posts/measuring-lithium-battery-voltage-with-nrf51 but which pin is VBG? p0.01 = adc?

Need to recalclulate the resistance for 2 aaa batteries.

@alowhum Can you clearify how to read MyBoardNRF5.h? Is PIN_AIN0 = p0.00?

What is the benift to use hwPinMode instead of using pinMode()?

I have started to test a NRF51822

and I can upload to it with Arduino IDE but I want to use vim + platformio. And I think i'm quite close

When I ran platformio upload --target upload

GNU MCU Eclipse 64-bits Open On-Chip Debugger 0.10.0+dev-00392-gbe9ef0b0 (2018-01-12-14:56)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
0x4000
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
adapter speed: 1000 kHz
Info : Unable to match requested speed 1000 kHz, using 950 kHz
Info : Unable to match requested speed 1000 kHz, using 950 kHz
Info : clock speed 950 kHz
Info : STLINK v2 JTAG v17 API v2 SWIM v4 VID 0x0483 PID 0x3748
Info : using stlink api v2
Info : Target voltage: 3.225841
Info : nrf51.cpu: hardware has 4 breakpoints, 2 watchpoints
Info : Listening on port 3333 for gdb connections
target halted due to debug-request, current mode: Thread
xPSR: 0xc1000000 pc: 0x000021a4 msp: 0x20004000
** Programming Started **
auto erase enabled
Warn : Unknown device (HWID 0x000000d1)
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/nrf52.cfg to disable it
target halted due to breakpoint, current mode: Thread
xPSR: 0x61000000 pc: 0x2000001e msp: 0x20004000
wrote 33792 bytes from file .pioenvs/nrf51_dk/firmware.hex in 1.594509s (20.696 KiB/s)
** Programming Finished **
** Verify Started **
target halted due to breakpoint, current mode: Thread
xPSR: 0x61000000 pc: 0x2000002e msp: 0x20004000
verified 32960 bytes in 0.236646s (136.015 KiB/s)
** Verified OK **
** Resetting Target **
shutdown command invoked

and the output in Arduino IDE looks like:

Open On-Chip Debugger 0.10.0-dev-00254-g696fc0a (2016-04-09-12:07)
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
debug_level: 0
0x4000
adapter speed: 1000 kHz
nrf51.cpu: target state: halted
target halted due to debug-request, current mode: Thread 
xPSR: 0xc1000000 pc: 0x0000251c msp: 0x20004000
** Programming Started **
auto erase enabled
nrf51.cpu: target state: halted
target halted due to breakpoint, current mode: Thread 
xPSR: 0x61000000 pc: 0x2000001e msp: 0x20004000
wrote 31744 bytes from file /tmp/arduino_build_390477/Si7021_TemperatureNode_v007_voltage__version_7_board_.ino.hex in 1.500105s (20.665 KiB/s)
** Programming Finished **
** Verify Started **
nrf51.cpu: target state: halted
target halted due to breakpoint, current mode: Thread 
xPSR: 0x61000000 pc: 0x2000002e msp: 0x20004000
verified 31580 bytes in 0.234860s (131.312 KiB/s)
** Verified OK **
** Resetting Target **
shutdown command invoked

and my platfromio.ini looks like:

[env:nrf51_dk]
platform = nordicnrf51
framework = arduino
board = nrf51_dk
upload_protocol = stlink 

Should I modify the nrf51_dk.cfg or can anyone see whats the problem is?