Difference between write and write no response

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Sun, 2019-12-22 06:07

nigelyang

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Last seen:1 week 5 days ago

加入:2018-03-20 08:24

Difference between write and write no response

hi Dialog,

I am curious about the response handling for the two cases "GATT_PROP_WRITE" and "GATT_PROP_WRITE_NO_RESP". They both seem to use ble_gatts_write_cfm() to response the write request according to the desciption of ble_gatts_write_cfm(). I think the case of "GATT_PROP_WRITE_NO_RESP" should not use ble_gatts_write_cfm() to do a response to client, does it? Or "GATT_PROP_WRITE" should use ble_gatts_write_cfm() twice, and "GATT_PROP_WRITE" just use one. How to handle "with response" and "without response" in coding?

thanks for your help.

Device:

DA1468x

Thu, 2019-12-26 03:39

CYibin

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Last seen:4 months 2 weeks ago

加入:2017-12-14 02:48

Hi nigelyang,

你是对的,

server don't have to pespond to the client when it received a gatt_write_no_rsp event.

But for gatt_write event, the response is needed, so that you should call the ble_gatts_write_cfm() function to do so.

Yibin