Error: Flash Download failed - "Cortex-M4" with SDK13.0

[MNIL]

Hi,

When I try to download code to my nRF52832 from Keil with the example "BLE ATT_MTU Throughput Example", I get this error: Error: Flash Download failed - "Cortex-M4"

I use SDK13.0 and s132_nrf52_4.0.2_softdevice. probably I trying to flash the application in Keil to a flash-region where the SoftDevice is located.

My program Information :

Program Size: Code=42620 RO-data=178216 RW-data=404 ZI-data=30548 .

=> total flash usage is: = Code + RO-data + RW-data = 221240 < (512 kB flash of NRF52) ?

Why is this error? What can I do about it?

[Jørgen Holmefjord]

Hi,

Have you modified the target RAM/ROM settings in Keil? The defaults look like this:

You should also try to erase the board, using nrfjprog command --eraseall, or using nRFgo Studio, before reflashing the softdevice and application.

Best regards,

Jørgen

[MNIL]

The target RAM/ROM settings in my Keil is defaults. I can reflash softdevice and application successful after when i eraseall the board. But it still happens the error in the next flash aplication. I flashing nrf52832 chip with ST link V2. how much maximum flash memory is used for the application? can you help me? thank you!

[Jørgen Holmefjord]

If data is found in the flash region, you will have to erase before programming. You can try the "Erase Full Chip" option in Flash Download tab of Debug Settings in Keil. Max flash usable by application depends on chip version and softdevice version, and is documented in the release notes of the softdevice.