bt_hogp_rep_write_wo_rsp can only send one Byte one time

[Martin Evans]

Hi,Nordic team

I am programming with nrf52833,ncs v2.9.0,base on peripheral_hids_keyboards and central_hids.

On central I call bt_hogp_rep_write_wo_rsp can only send one Byte at one time,and mtu is 23(it should be sent 20Bytes at least).

my call is 

uint8_t data = 0x01;

 bt_hogp_rep_write_wo_rsp(hogp, hogp->rep_boot.kbd_out, data, len, write_cb);

//upper is ok,I can catch data in peripheral

uint8_t data[8] = {0x01, 0x02, 0x03,0x04,0x05,0x06,0x07,0x08};

bt_hogp_rep_write_wo_rsp(hogp, hogp->rep_boot.kbd_out, data, len, write_cb);//this is not ok but return 0(success),and cannot catch data in peripheral

Best regard

[Amanda Hsieh]

Hi, 

You're passing the array data directly to the function. Make sure you're passing the correct pointer to your data array. The bt_hogp_rep_write_wo_rsp function signature expects const void *data the parameter, and also checks if the length parameter is correct. 

Regards,
Amanda H.

[Martin Evans]

Hi,

I change data type to const unit8_t and i am sure len is right.But cannot send more than one Byte.Do i need change report_map on peripheral?If yes,how?

Best Regard

[Amanda Hsieh]

Martin Evans said:

i am sure len is right.But cannot send more than one Byte.

What is the value of the "len"? For your specific case with bt_hogp_rep_write_wo_rsp(), I think the issue might be related to how the data is being passed. When you're passing an array, make sure the length parameter (len) is correctly set to the size of your array (8 in your case).

 

[Martin Evans]

Hi,

I am sure that I send correct data size,But once the size bigger than 1,cannot be received in peripheral side.

This is what i send in central side

But nothing received in peripheral side

Best regard