Hi,
I'm trying to determine why a HCI DFU upload fails.
There is a log of the communication below showing the serial request/responses on the Windows side.
Is anyone able to suggest what I could try to fix this or let me know what the return codes mean please?
Env: nrf51822 AB, SDK6.2.1, softdevice 7.1.0 using gcc version 4.8.4 20140526
Serial config: 9600, no hw flow control
Code base: github.com/.../nrf51-dfu-bootloader-for-gcc-compiler
Modifications to bootloader: button & LED pins, clock source, serial baud set to 9600 and hw flow control disabled.
The above codebase has a windows binary, which didn't work and lacked detailed output, so instead I'm using the one from the SDK with additional print debug
I've tried with and without sending the INIT packet (the SDK6.2.1 source shows it doesn't handle it anyway) I've also added some retry loops to the serial writes.
Sending START
TX attempt #: 1
UART Write: c0 d1 4e 01 e0 03 00 00 00 04 00 00 00 00 00 00 00 00 00 00 00 a8 10 00 00 bd 83 c0
UART read: 0xc0
UART read: 0x10
UART read: 0x0
UART read: 0x0
UART read: 0xf0
UART read: 0xc0
non-slip data [[16, 0, 0, 240]]
Ack result: 2
Sent ok!
Sending DATA
TX attempt #: 1
UART Write: c0 da 4e 20 b8 04 00 00 00 00 40 00 20 71 61 01 00 51 61 <SNIP> 4b 00 f0 8b 63 c0
UART read: 0xc0
UART read: 0x18
UART read: 0x0
UART read: 0x0
UART read: 0xe8
UART read: 0xc0
non-slip data [[24, 0, 0, 232]]
Ack result: 3
Sent ok!
Progress: 0
TX attempt #: 1
UART Write: c0 e3 4e 20 af 04 00 00 00 71 fd a0 42 03 d0 21 1c 22 1c <SNIP> a a3 23 26 f2 c0
UART read: 0xc0
UART read: 0x20
UART read: 0x0
UART read: 0x0
UART read: 0xe0
UART read: 0xc0
non-slip data [[32, 0, 0, 224]]
Ack result: 4
Sent ok!
Progress: 9
TX attempt#: 1
UART Write: c0 ec 4e 20 a6 04 00 00 00 db dd 00 <SNIP> c1 c0
UARt attempting read...
UARt attempting read...
UARt attempting read...
UARt attempting read...
UARt attempting read...
UARt attempting read...
UARt attempting read...
UARt attempting read...
UARt attempting read...
UARt attempting read...
Transmission timeout.
non-slip data [[]]
Retrying packet send... err = list index out of range
TX attempt #: 2
UART Write: c0 ec 4e 20 a6 04 00 00 00 db dd 00 d0 58 <SNIP> 20 aa c1 c0
UARt attempting read...
UARt attempting read...
UARt attempting read...
UARt attempting read...
UARt attempting read...
