@alexsh1 I've put this aside for a few days to clear my head. Changed to another breadboard started froms cratch and reconnected all the wiring. Now it does works! probably a bad connection or a miswiring.

Thx for the help!

@alexsh1 , Thx for checking!
Code does compile, but i'm still getting

!TSM:INIT:TSP FAIL

Tried different pins as well, but no luck. Did you managed to get the radio to initialise?

thx! I'm thinking along the same lines, as the chip is in use for the sensebender gateways. I give it another try today, but still no luck.

schematic for mini ultra: https://github.com/rocketscream/MiniUltraPro/raw/master/MINI-ULTRA-PRO.pdf
schematic for arduino zero: https://www.arduino.cc/en/uploads/Main/ArduinoZero-schematic.pdf
schematic for sensebenderGW: https://www.openhardware.io/dl/5691595329c41a296a5d0fd3/design/MysensorsGW.pdf

I've tried using pins 19,20,21 and 11,12,13

I tried using softSPI, but this seems to give errors when used on arm:

Compiling .pioenvs\zeroUSB\src\main.cpp.o
Compiling .pioenvs\zeroUSB\libf5a\SPI\SPI.cpp.o
In file included from C:\Users\robbi\.platformio\lib\MySensors_ID548/hal/architecture/AVR/drivers/DigitalIO/DigitalIO.h:31:0,
from C:\Users\robbi\.platformio\lib\MySensors_ID548/MySensors.h:341,
from src\main.cpp:130:
C:\Users\robbi\.platformio\lib\MySensors_ID548/hal/architecture/AVR/drivers/DigitalIO/DigitalPin.h:32:25: fatal error: util/atomic.h: No such file or directory
#include <util/atomic.h>
^
compilation terminated.
*** [.pioenvs\zeroUSB\src\main.cpp.o] Error 1

compelete code:

#include "arduino.h"
/*
 * 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) 2013-2019 Sensnology AB
 * Full contributor list: https://github.com/mysensors/MySensors/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
 * Version 1.0 - Rait Lotamõis
 *
 * DESCRIPTION
 * The TinyGSM MQTT gateway sends radio network (or locally attached sensors) data to your MQTT broker using a GSM modem or optionally an ESP8266 as a WiFi modem.
 * The node also listens to MY_MQTT_TOPIC_PREFIX and sends out those messages to the radio network
 *
 * LED purposes:
 * - To use the feature, uncomment WITH_LEDS_BLINKING in MyConfig.h
 * - RX (green) - blink fast on radio message recieved. In inclusion mode will blink fast only on presentation recieved
 * - TX (yellow) - blink fast on radio message transmitted. In inclusion mode will blink slowly
 * - ERR (red) - fast blink on error during transmission error or recieve crc error
 */


// Enable debug prints to serial monitor
#define MY_DEBUG

// Enables and select radio type (if attached)
#define MY_RADIO_RF24
//#define MY_RADIO_RFM69
//#define MY_RADIO_RFM95
#define MY_RF24_CHANNEL 120
#define MY_RF24_PA_LEVEL RF24_PA_LOW

#define MY_RF24_CE_PIN 5
#define MY_RF24_CS_PIN 6
#define MY_SOFTSPI 
#define MY_SOFT_SPI_SCK_PIN 14
#define MY_SOFT_SPI_MISO_PIN 16
#define MY_SOFT_SPI_MOSI_PIN 15

#define MY_GATEWAY_MQTT_CLIENT

// Enable GSM modem support
#define MY_GATEWAY_TINYGSM

// Define your modem
#define TINY_GSM_MODEM_SIM800
// #define TINY_GSM_MODEM_SIM808
// #define TINY_GSM_MODEM_SIM900
// #define TINY_GSM_MODEM_A6
// #define TINY_GSM_MODEM_A7
// #define TINY_GSM_MODEM_M590
// #define TINY_GSM_ESP8266

// leave empty anything that does not apply
#define MY_GSM_APN	"hologram"
//#define MY_GSM_PIN	"1234"
#define MY_GSM_USR	""
//If using a GSM modem, this stands for your GSM connection password. If using WiFi, it's your wireless password.
#define MY_GSM_PSW	""
//#define MY_GSM_SSID ""

// Use Hardware Serial on Mega, Leonardo, Micro
#define SerialAT Serial1
// or Software Serial on Uno, Nano
//#include <SoftwareSerial.h>
//#define MY_GSM_RX 4
//#define MY_GSM_TX 5

// If your Mosquitto is old fashioned and does not support 3.1.1
//#define MQTT_VERSION MQTT_VERSION_3_1

// Set this node's subscribe and publish topic prefix
#define MY_MQTT_PUBLISH_TOPIC_PREFIX "mygateway2-out"
#define MY_MQTT_SUBSCRIBE_TOPIC_PREFIX "mygateway2-in"

// Set MQTT client id
#define MY_MQTT_CLIENT_ID "mygateway2"

// Enable these if your MQTT broker requires username/password
#define MY_MQTT_USER ""
#define MY_MQTT_PASSWORD ""

// Enable MY_IP_ADDRESS here if you want a static ip address (no DHCP)
//#define MY_IP_ADDRESS 192,168,32,220

// If using static ip you can define Gateway and Subnet address as well
//#define MY_IP_GATEWAY_ADDRESS 192,168,32,1
//#define MY_IP_SUBNET_ADDRESS 255,255,255,0

// MQTT broker if using URL instead of ip address.
#define MY_CONTROLLER_URL_ADDRESS "-----"

// The MQTT broker port to to open
#define MY_PORT ----

/*
// Enable inclusion mode
#define MY_INCLUSION_MODE_FEATURE
// Enable Inclusion mode button on gateway
//#define MY_INCLUSION_BUTTON_FEATURE
// Set inclusion mode duration (in seconds)
#define MY_INCLUSION_MODE_DURATION 60
// Digital pin used for inclusion mode button
//#define MY_INCLUSION_MODE_BUTTON_PIN  3

// Set blinking period
#define MY_DEFAULT_LED_BLINK_PERIOD 300

// Flash leds on rx/tx/err
// Uncomment to override default HW configurations
//#define MY_DEFAULT_ERR_LED_PIN 16  // Error led pin
//#define MY_DEFAULT_RX_LED_PIN  16  // Receive led pin
//#define MY_DEFAULT_TX_LED_PIN  16  // the PCB, on board LED
*/

#include <MySensors.h>

void setup()
{
	// Setup locally attached sensors
}

void presentation()
{
	// Present locally attached sensors here
}

void loop()
{
	// Send locally attached sensors data here
}

Is anyone using a Mini Ultra Pro v3 as a gateway? I have a few of them lying around and I want to use one as a gsm gateway

I tried getting the nRF24 radio up and running before adding other components, but I seem unable to get it working.

20128 TSM:FAIL:DIS
20138 TSF:TDI:TSL
30149 TSM:FAIL:RE-INIT
30159 TSM:INIT
30174 !TSM:INIT:TSP FAIL
30184 TSM:FAIL:CNT=4

I found a post about the Arduino Zero, which uses the same chip, as wel as the sensebender gateway.

I tried using the spi pins (22-23-24), defined soft spi pins and tried using the pins used by sensebender gateway (found in the schematic).

Also used 2 different radios, used both vbus pin, as wel as bat pin with li-ion battery connected. radio has cap soldered to it and is working on pro mini and nano.