try to integrate Mult-touch and Keyboard functionalities in a single program, but it only can send Mult-touch information normally, failed to send Key value.

RE: try to integrate Mult-touch and Keyboard functionalities in a single program, but it only can send Mult-touch information normally, failed to send Key value.

huangqiang2007 — Fri, 24 Aug 2018 01:38:49 GMT

Hi Hakon,

Thanks for your timely feedback. As your verification, I guess it exists some fault to support both keyboard and digitizer simultaneously based on Android7.1.1 . I will perchase a bluetooth adapter for testing my program on ubuntu or windows.

Thanks a lot,

QiangHuang

RE: try to integrate Mult-touch and Keyboard functionalities in a single program, but it only can send Mult-touch information normally, failed to send Key value.

Håkon Alseth — Thu, 23 Aug 2018 11:40:24 GMT

Hi,

I added your descriptor to the ble_app_hids_keyboard example in SDK v12.2, and I see similar behavior.

If I add the digitizer descriptor, the keyboard refuses to work properly on android (7.1.1). Changing the descriptor to something else, like consumer controls (vol up/down, power, etc), then the keyboard works just fine.

Testing it in linux (ubuntu 18.04.1), both keyboard and digitizer work as expected.

Could you try your implementation in linux or windows 8/10, to see if it works in these OSes?

Best regards,

Håkon

RE: try to integrate Mult-touch and Keyboard functionalities in a single program, but it only can send Mult-touch information normally, failed to send Key value.

huangqiang2007 — Thu, 23 Aug 2018 08:22:47 GMT

Hi Hakon,

please ignore the identical repeated reply due to my network issue.

Thanks,

QiangHuang

RE: try to integrate Mult-touch and Keyboard functionalities in a single program, but it only can send Mult-touch information normally, failed to send Key value.

huangqiang2007 — Thu, 23 Aug 2018 07:41:36 GMT

Hi Hakon,

Actually I have tried to set hids_init_obj.is_kbd to true and kept appearance as BLE_APPEARANCE_HID_KEYBOARD, but it still failed to send key value and can send touch value normally.

Best Regatds,

QiangHuang

RE: try to integrate Mult-touch and Keyboard functionalities in a single program, but it only can send Mult-touch information normally, failed to send Key value.

huangqiang2007 — Thu, 23 Aug 2018 07:38:03 GMT

Hi Hakon,

Actually I have tried to set hids_init_obj.is_kbd to true and kept appearance as BLE_APPEARANCE_HID_KEYBOARD, but it still failed to send key value and can send touch value normally.

Best Regatds,

QiangHuang

RE: try to integrate Mult-touch and Keyboard functionalities in a single program, but it only can send Mult-touch information normally, failed to send Key value.

huangqiang2007 — Thu, 23 Aug 2018 07:37:28 GMT

Hi Hakon,

Actually I have tried to set hids_init_obj.is_kbd to true and kept appearance as BLE_APPEARANCE_HID_KEYBOARD, but it still failed to send key value and can send touch value normally.

Best Regatds,

QiangHuang

RE: try to integrate Mult-touch and Keyboard functionalities in a single program, but it only can send Mult-touch information normally, failed to send Key value.

Håkon Alseth — Thu, 23 Aug 2018 06:53:10 GMT

Hi,

if "hids_init_obj.is_kbd" is not set true, the ble_hids library does not populate the boot characteristics (or the protocol mode characteristic). Could you try setting this to true and see if this has any effect?

Best regards,

Håkon

RE: try to integrate Mult-touch and Keyboard functionalities in a single program, but it only can send Mult-touch information normally, failed to send Key value.

huangqiang2007 — Thu, 23 Aug 2018 01:25:36 GMT

Hi Hakon Alseth,

I confirmed that the INPUT_REPORT_KEYS_INDEX is 1. Actually I have configured input and output report in hids_init( ) as follows:

{

...

ble_hids_inp_rep_init_t input_report_array[2];
ble_hids_outp_rep_init_t output_report_array[1];

p_input_report = &input_report_array[INPUT_REP_TOUCH_INDEX];
p_input_report->max_len = INPUT_REP_TOUCH_LEN;
p_input_report->rep_ref.report_id = INPUT_REP_TOUCH_ID;
p_input_report->rep_ref.report_type = BLE_HIDS_REP_TYPE_INPUT;

BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.cccd_write_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.write_perm);

p_input_report = &input_report_array[INPUT_REPORT_KEYS_INDEX ];
p_input_report->max_len = INPUT_REPORT_KEYS_MAX_LEN;
p_input_report->rep_ref.report_id = INPUT_REPORT_KEYS_ID;
p_input_report->rep_ref.report_type = BLE_HIDS_REP_TYPE_INPUT;

p_output_report = &output_report_array[OUTPUT_REPORT_INDEX];
p_output_report->max_len = OUTPUT_REPORT_MAX_LEN;
p_output_report->rep_ref.report_id = OUTPUT_REP_REF_ID;
p_output_report->rep_ref.report_type = BLE_HIDS_REP_TYPE_OUTPUT;

BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_output_report->security_mode.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_output_report->security_mode.write_perm);

hid_info_flags = HID_INFO_FLAG_REMOTE_WAKE_MSK | HID_INFO_FLAG_NORMALLY_CONNECTABLE_MSK;

memset(&hids_init_obj, 0, sizeof(hids_init_obj));

hids_init_obj.evt_handler = on_hids_evt;
hids_init_obj.error_handler = service_error_handler;
hids_init_obj.is_kb = false;
hids_init_obj.is_mouse = false;
hids_init_obj.inp_rep_count = 2;
hids_init_obj.p_inp_rep_array = input_report_array;
hids_init_obj.outp_rep_count = 1;
hids_init_obj.p_outp_rep_array = output_report_array;

hids_init_obj.feature_rep_count = 0;
hids_init_obj.p_feature_rep_array = NULL;

hids_init_obj.rep_map.data_len = sizeof(report_map_data);
hids_init_obj.rep_map.p_data = report_map_data;

hids_init_obj.hid_information.bcd_hid = BASE_USB_HID_SPEC_VERSION;
hids_init_obj.hid_information.b_country_code = 0;
hids_init_obj.hid_information.flags = hid_info_flags;
hids_init_obj.included_services_count = 0;
hids_init_obj.p_included_services_array = NULL;

...

}

some macro defines as follows:

#define INPUT_REP_TOUCH_INDEX 0
#define INPUT_REP_TOUCH_LEN 13
#define INPUT_REP_TOUCH_ID 1

#define INPUT_REPORT_KEYS_INDEX 1

#define OUTPUT_REPORT_MAX_LEN 8

#define INPUT_REPORT_KEYS_ID 2

#define OUTPUT_REPORT_INDEX 0

#define OUTPUT_REPORT_MAX_LEN 1

#define OUTPUT_REP_REF_ID 0

In addition, I have set the appearance to BLE_APPEARANCE_GENERIC_HID. If I keep the appearance as BLE_APPEARANCE_HID_KEYBOARD, it can't send any information to phone side.

Best Regards,

QiangHuang

RE: try to integrate Mult-touch and Keyboard functionalities in a single program, but it only can send Mult-touch information normally, failed to send Key value.

Håkon Alseth — Wed, 22 Aug 2018 13:23:59 GMT

Hi,

The function "send_key_scan_press_release" uses index INPUT_REPORT_KEYS_INDEX, which needs to be concise with your configuration (in your specific case; should be set to 1).

An easier way to send keyboard data is to send it directly without using the added buffering logic in the example, for instance like this:
// Send "hi"
uint8_t temp_buf[INPUT_REPORT_KEYS_MAX_LEN] = {0x00, 0x00, 0xb, 0xc, 0x2c, 0x0, 0x0, 0x0};
ble_hids_inp_rep_send(&m_hids, INPUT_REPORT_KEYS_INDEX, INPUT_REPORT_KEYS_MAX_LEN, (uint8_t*)temp_buf, m_conn_handle);

Could you check your index values and report them here if it still does not work?

Kind regards,
Håkon