S210 Bootloader

Question

I have a blank nrf51422 that I have successfully loaded with the latest S210 softdevice and working application. However, I do not see the bootloader region occupied when I open NRFgo studio. Am I to assume the bootloader is there? If not can someone point me to where I can get it? I've been searching the forums and have not been successful. I'm trying to make the device DFU. Many Thanks,

testy · Accepted Answer

No bootloader is present, it must be added from e.g.: 
 nordic's nRF51_SDK_v7.2.0_cf547b5.zip\ examples\dfu\experimental_ant_bootloader 
 Tested, works together with thisisant's OTA_Updater_v1.1.zip 
 
 Edit 11.5.: 
 I'm sure your IRAM1 start address is wrong, because is outside of 32KB range. 
 My settings: 
 IROM1:
start 0x3B800, size 0x4800 
 IRAM1:
start 0x20002800 , size 0x1800 (16KB RAM only, QFAA device) 
 Do not forget to set valid ANT-fs network key instead of zeros too. 
 When the bootloader is started for the first time (no app valid flag), app must be transferred through OTA DFU. If done successfully, another app OTA DFU can be performed and an old app stays in device until successfull upload. Starting of dual-bank bootloader doesn't overwrite an original. Only updating of softdevice does this job. 
 
 Edit 22.5. 
 I was wrong - no special setting is necessary to run app with ANT bootloader from SDK 7.2.0 without OTA DFU: 
 
 nrfjprog --recover 
 nrfjprog --dfu --verify --programs s210_nrf51422_4.0.1_softdevice.hex 
 nrfjprog --verify --program ANT_S210_app.hex 
 nrfjprog --verify --program ANT_S210_bootloader.hex 
 
 My settings for nRF51422 QFAA (16KB RAM, 256KB FLASH) is attached: 
 
 Keil bootloader settings area for ANT bootloader before OTA DFU process: 
 
 Updated area after OTA DFU:

S210 Bootloader

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