evt_write values after 'long write'?

[Lionel Sacks]

Hi, I have implemented the support for 'long write' as in github.com/.../ble_app_hrs---LongWrite

which works from the MCP... except that on BLE_GATTS_EVT_WRITE, it seems that the evt_write->handle is zero after the write is completed if I send > 20 bytes.

If I write just a few bytes, I do get the correct event with the expected p_evt_write->handle

When I send more, the data is there, safe and sound if I look in the location passed in attr_char_value.p_value but ->handle seems to be zero.

But I'm not sure where to look to see that I'm being notified that the write is complete.

s110_nRF51_8.0.0 (Id: 0x0064).

Thanks for any thoughts.

[Hung Bui]

Hi Lionel,

The handle won't come with the evt_write->handle when it come to long write. As you can find in this message sequence chart

There could be multiple characteristic written in one long write.

What the application have to do to find the written handle(s) is to parse the packets that you receive in the user memory buffer.

The format is [HandleID 2 bytes] [Offset 2 bytes] [Length 2 bytes] [Data] and repeat for each write request packet in a long write.

[Lionel Sacks]

Thanks! That works!