DFU FW-Update with Intel Wireless Bluetooth

Question

Hi there,
I have a problem with the bootloader from the RF5_SDK_11.0.0_89a8197 together with Intel Wireless Bluetooth chipset.
I use the softdevice s132_nrf52_2.0..1. I have to stay on this release.
The bootloader DFU update works well with Realtek or Logilink. The FW update with these chips is in about 90 seconds done. The Intel Wireless Bluetooth chip takes 216 seconds to do this. Anyway. I increased the timeout to 300000 seconds (DFU_TIMEOUT_INTERVAL) . In addition, the timeout is reset until the end using dfu_timer_restart(). The WDT is also reset. But none of this seems to be the problem. With Intel, the DFU update is rarely carried out completely , but most of the time it is canceled at an unpleasant place. What I found with Realtek or Logilink : Do STORE 0000000000 <---- Sore Value in Bank 1 Do STORE 0000000000 BLE_DFU_VALIDATE <----- Validate Comand dfu_timer_restart done <----- Restart Timout BLE_DFU_ACTIVATE_N_RESET <---- Activate and reset 
 dfu_timer_restart done <----- Restart Timout 
 Erase BANK 0 0000000000 Swap BANK 1 to BANK 0 update_process ready DFU_UPDATE_APP_COMPLETE <----- End off Comand Activate and reset Done <----- Last DFU Comunication to here app. in 90 sec 
 Now the bootloader starts the internal update from bank 1 to bank 0. 
 0000000000 <---- return value, clean up Bank0 / Pages 0000000000 * * * 0000000000 0000000000 
 Start Swap BANK 1 to BANK 0 
 Do STORE 0000000000 <---- return value, Swap BANK 1 to BANK0 / Pages Do STORE 0000000000 * * * Do STORE 0000000000 Do STORE 0000000000 Do STORE 0000000000 
 BOOTLOADER_COMPLETE <----- done, restart App App Start.. 
 Everything went well, a s expected. 
 And if not, it looks like this (Intel): 
 Do STORE 0000000000 <---- Sore Value in Bank 1 Do STORE 0000000000 BLE_DFU_VALIDATE <----- Validate Comand dfu_timer_restart done <----- Restart Timout BLE_DFU_ACTIVATE_N_RESET <---- Activate and reset 
 dfu_timer_restart done <----- Restart Timout 
 Erase BANK 0 0000000000 Swap BANK 1 to BANK 0 update_process ready DFU_UPDATE_APP_COMPLETE <----- End off Comand Activate and reset Done <----- Last DFU Comunication in 216 sec. 
 Now the bootloader starts the internal update from bank 1 to bank 0. 
 0000000000 <---- return value clean up Bank0 / Pages 0000000000 * * * 0000000000 0000000000 
 Start Swap BANK 1 to BANK 0 
 0000000000 <----- return value first Page 
 Now the bootloader is reset! I have no idea why this happens! 
 --> Dev Name xxx 7000 <---- Bootloader start, after Timeout, the bootloader tries to start the app, but it doesn't exist. BLE_DFU_START_APP App Start... 
 Does anyone have an idea what triggers the termination? Regard and thanx for Your help.

kdu · Accepted Answer

Hi Hung
you are right, I should have mentioned it. Intel-BLE is built into my PC. The others are BLE-USB dongle.
The OS is the last Win10. But that doesn't seem to be the problem. I think it's a timeout of 240 seconds somewhere. The nR52832 is restarted. The Intel BLE chip is only slower, so we're here at some timeout limit of 240 Sec. In my opinion, the data transmission and data check are finished and found to be good (always). The image is now in Bank1. The BLE connection is cleared down after "DFU_UPDATE_APP_COMPLETE" has been reported (after app. 216 seconds).Bank0 is now cleared. Then the image of Bank1 should be copied to Bank 0 and this rarely works with Intel. It always works with the other faster BLE dongles (app. 90sec). 
 If it failed, I checked the banks with my Jlink. Bank1 contains the complete new errorfree image, Bank0 is overwritten with 0xffff.

DFU FW-Update with Intel Wireless Bluetooth

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