Cannot read characteristic value after wr_auth success if vlen=1

[Mark P. Mendelsohn]

Attached program has 4 characteristics

1. UUID_VLEN1 - VLOC_STACK, no rd_auth or wr_auth - value can be read after written

2. UUID_VLEN2 - VLOC_USER, no rd_auth or wr_auth - value can be read after written

3. UUID_VLEN3 - VLOC_USER, no rd_auth but wr_auth - value cannot be read after written even after reply set to SUCCESS

4. UUID_FLEN1 - VLOC_USER, no rd_auth but wr_auth - value can be read after written after reply set to SUCCESS if data is copied to VLOC_USER location

#3 cannot be read no matter what is tried

[Mark P. Mendelsohn]

link text

[Petter Myhre]

Which version of the SoftDevice and SDK are you using? What do you mean by cannot be read? Do you get an error when you try to read or you don't get the expected value (the one you have written)?

[Mark P. Mendelsohn]

SDK 13.0.0, s132 v4.0.2, Using LightBlue on an iPhone, Read operation produces a "No Value" response. nRF Connect shows a value of 0x.

[Petter Myhre]

When you call sd_ble_gatts_rw_authorize_reply() are you replying with the data you want the attribute to be set to? You should set update to 1, and supply a pointer to the data you want to update the attribute with.

[Mark P. Mendelsohn]

Yes. That fixed it. Thought BLE_GATTS_VLOC_USER value would automatically get picked up. Thanks