Pin assign and check data

Question

Hi. I'm beginner of nRF. 
 
 I want to get some data from a temperature sensor, but I don't know how to assign a pin. Also, how can I check the data ?? 
 
 In Arduino, there is a serial monitor that can check the value in real time. Is there any fuction like Arduino's serial monitor? 
 
 I use SEGGER Embedded Studio for ARM 3.40

Simon · Accepted Answer

It depends on what kind of sensor you have, different temperature sensors have different interfaces for reading out the data, for example: 
 
 Linear output voltage 
 SPI communication 
 I2C communication

Linear output voltage 
 Some temperature sensors like this only consist of ground, VDD and output voltage. Then you connect the pins as followed: 
 
 VDD on nRF52 → VCC on sensor board 
 GND on nRF52 → GND on sensor board 
 Any input pin on nRF52 → Output pin on sensor board

SPI communication 
 This sensor uses SPI communication and the sensor values can be retrieved using the SPI Master Example . SPI communication includes a single master and one or more slaves, which uses four signals: SCLK, MOSI, MISO and SS ( wikipedia gives a more in-depth explanation). If using the provided SPI example (sdk 15.0.0), the pins should be connected in the following manner: 
 
 SS: Pin 29 on nRF52 (master) → CS on sensor board 
 MISO: Pin 28 on nRF52 (master) → SO on sensor board 
 VDD on nRF52 → VCC on sensor board 
 GND on nRF52 → GND on sensor board 
 
 *nRF52 is master and the sensor is slave 
 
 I2C communication 
 If you are using I2C interface (like this digital temperature sensor), you can use the TWI Sensor Example . I2C Communication uses a Serial Data Line (SDA) and a Serial Clock Line (SCL), and requires a master (nRF52 chip) and a slave (temperature sensor). In the TWI Sensor example (sdk 15.0.0) , the SDA and SCL is defined to respectively pin 26 and 27. Then you have to connect it accordingly: 
 
 SDA: Pin 26 on nRF52 → SDA on sensor board 
 SCL: Pin 27 on nRF52 → SCL on sensor board 
 VDD on nRF52 → VCC on sensor board 
 GND on nRF52 → GND on sensor board 
 
 *nRF52 is master and the sensor is slave 
 
 Logging 
 If you want to check the value in real time, you can do it through RTT or UART. That can be done by using the provided examples and setting NRF_LOG_ENABLED, and NRF_LOG_BACKEND_RTT_ENABLED/NRF_LOG_BACKEND_UART_ENABLED to 1 in the sdk_config file. If using UART, you can download a monitor like Termite to see the data. If using RTT, you can see the data by starting a debug session. More information about logging can be found here . 
 
 Best regards Simon

Pin assign and check data

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