RFID Library nRF52832

This is a C Library for the RFIDRW-E-TTL Animal tag and RFID reader writer with external antenna, and TTL output using nRF5 SDK 16.0 (nRF52832 board)

How to compile and flash

1. Download:

   • gcc arm none eabi toolchain x86-64-linux: https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm/downloads
   • SDK for the nRF52 16.0: https://www.nordicsemi.com/Software-and-tools/Software/nRF5-SDK/Download#infotabs
   • Programmer NRFJPROG: https://www.nordicsemi.com/Software-and-tools/Development-Tools/nRF-Command-Line-Tools/Download#infotabs
   • JLink: https://www.segger.com/downloads/jlink/#J-LinkSoftwareAndDocumentationPack

2. Create a folder in /opt to unzip files, e.g. /opt/SEGGER/

3. Change lines 19,20,21 and 22 in the CMakeLists.txt file at the root project with the path for each one (toolchain,SDK and Programmer) and save it. e.g.

    set(NRF_TARGET 	"nrf52")							  # nrf51 or nrf52
    set(ARM_NONE_EABI_TOOLCHAIN_PATH "/opt/SEGGER/gcc-arm-none-eabi-9-2019-q4-major") # Path to root folder 
    set(NRF5_SDK_PATH "/opt/SEGGER/nRF5SDK"	)					  # Path to root folder
    set(NRFJPROG "/opt/SEGGER/Toolchain/nrfjprog/nrfjprog")				  # Path to .bin file
   

4. Create a build folder and,

    $ cd build/	
    $ cmake ../	
   

   If everything is good, you should see something like this, e.g.

    <info> app: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    <info> app: ***      MAIN PROGRAM     ***
    <info> app: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    <info> app: ---	Setting drv clock:                      DONE
    <info> app: --- Setting drv power:                      DONE
    <info> app: ---	Setting app timer:                      DONE
    <info> app: ---	Setting leds ON:                        DONE
    <info> app: ---	Setting RFID:                           DONE
    <info> app: --- Setting RX pin:                 8
    <info> app: --- Setting TX pin:                 6
    <info> app: ---	Initializing module: 					DONE
    <info> app: --- Flushing TX port: 						DONE
    <info> app: --- Sending command to RFID: 				DONE
    <info> app: --- Command SEND: 					SD0
    <info> app: --- Response from RFID: 			0xOK
    <info> app: --- Flushing TX port:                       DONE
    <info> app: --- Command SEND:                   LTG
    <info> app: --- Response from RFID:             0xOK
   
    <info> app: --- Flushing TX port:                       DONE
    <info> app: --- Command SEND:                   SL0
    <info> app: --- Response from RFID:             0xOK
   
    <info> app: --- Flushing TX port:                       DONE
   

5. Compile with make: (this will compile the source code "main.c" and flash the softdevice.hex and bin.hex to the board)

    $ make
   

   e.g.

    [ 91%] Linking C executable application-example.out
    post build steps for application-example
       text	   data	    bss	    dec	    hex	filename
       8800	    172	    884	   9856	   2680	application-example.out
    [ 91%] Built target application-example
    Scanning dependencies of target FLASH_application-example
    [ 93%] flashing application-example.hex
    Parsing hex file.
    Erasing page at address 0x0.
    Erasing page at address 0x1000.
    Erasing page at address 0x2000.
    Applying system reset.
    Checking that the area to write is not protected.
    Programming device.
    Applying system reset.
    Run.
    [ 93%] Built target FLASH_application-example
    Scanning dependencies of target FLASH_SOFTDEVICE
    [ 95%] flashing SoftDevice
    Parsing hex file.
    Erasing page at address 0x0.
    Erasing page at address 0x1000.
    .
    .
    .
    Erasing page at address 0x24000.
    Erasing page at address 0x25000.
    Applying system reset.
    Checking that the area to write is not protected.
    Programming device.
    Applying system reset.
    Run.
    [ 95%] Built target FLASH_SOFTDEVICE
    Scanning dependencies of target FLASH_ERASE
    [ 97%] erasing flashing
    Erasing user available code and UICR flash areas.
    Applying system reset.
    [ 97%] Built target FLASH_ERASE
    Scanning dependencies of target START_JLINK
    [100%] started JLink commands
    [100%] Built target START_JLINK
   

How to run monitor

At the root folder run,

	$ ./monitor

This assume that the JLink binaries are on /opt/SEGGER/JLink/ if not, you should modify the runJLinkEXE-nrf52 on the RTT folder.

How to print

Set these variables in your own code

	NRF_LOG_INIT((void*)0);
	NRF_LOG_DEFAULT_BACKENDS_INIT();   
		NRF_LOG_PROCESS();              
    	NRF_LOG_INFO("TEXT TO PRINT\n");
    	NRF_LOG_FLUSH();

and set these definitions on sdk_config.h

	NRF_LOG_BACKEND_RTT_ENABLED 	1
	NRF_FPRINTF_ENABLED 		1
	NRF_FPRINTF_DOUBLE_ENABLED	1
	NRF_LOG_ENABLED 1
	NRF_LOG_BACKEND_UART_BAUDRATE 115200

How to add new SDK libraries

You have to comment-uncomment these lines in order to include a SDK library in the CMakeLists.txt file.

	nRF5x_setup()
	# nRF5x_addAppScheduler()
	# nRF5x_addAppFIFO()
	nRF5x_addAppTimer()
	# nRF5x_addAppUART()
	nRF5x_addAppButton()
	nRF5x_addBSP(TRUE FALSE FALSE) # (btn atn_btn nfc)
	nRF5x_addBLEGATT()
	# nRF5x_addBLEService(ble_bas)
	# nRF5x_addNFC()
	nRF5x_addAppFDS()
	nRF5x_addBLEPeerManager()
	# nRF5x_addBLEAdvertising()
	# nRF5x_addAppFIFO()

or,

	include_directories(
		"${NRF5_SDK_PATH}/<library header directory path>"
	)

	list(APPEND SDK_SOURCE_FILES
		"${NRF5_SDK_PATH}/<library source file path>"
	)

BLE SERVICES:

	- ble_ancs_c
	- ble_ans_c
	- ble_bas
	- ble_bas_c
	- ble_bps
	- ble_cscs
	...

How to use as your own project

Just modify the main.c file with your own code. In case you need specify more SDK libraries you have to modify the nrF5x.cmake file on the cmake folder.