cc2541 能不能显示来电提示功能？

    请问，cc2541 能不能模拟成一个蓝牙耳机，但是不用实现语音功能？

我想用它来实现来电提醒。

谢谢！

xyz549040622：

肯定可以的。蓝牙配对完成后，当有来电的时候，传输一个信号给cc2541就好了。

Yue TANG：

ANS 或ANCS

https://github.com/ti-simplelink/ble_examples/tree/ble_examples-2.1/Projects/ble/ancs

Apple Notification Center Service (ANCS)

Disclaimer

This example is still under construction. It has been tested and is confirmed to work under the nominal use cases. Other cases may have not be tested. Code in the ancs_client.c file still needs cleanup. Please file any bugs through the github issue tracking system.

Purpose

The purpose of this project is to demonstrate a sample implementation of a CC2640/CC2650 based Apple Notification Center Service (ANCS) client. In addition, this sample application will give the user tips on how to connect to an iOS device using the TI BLE-Stack. The demo is simple, it will print the most recent notification to the screen or terminal and will allow the user to positive or negative action on the notification using button presses.

Prerequisities

It is expected that ther user of this demo has:

Read the Apple Bluetooth Accessory Design Guide. Apple Bluetooth Accessory Design Guidelines
Read the ANCS spec. ANCS Spec

Note that all terminology from the ANCS spec will apply, from here on out, this page will use the ANCS terminology.

Hardware

This demo supports the following hardware:

SmartRF06 Board + CC2650EM-7ID
CC2650 LaunchPad. The user must have one of these devices for out of the box support. However, with some effort this project can be ported to any device with two buttons, two LEDs, and a UART port such as the SensorTag. See the below page for TI development kits. TI Development Tools

Software

This demo requires the latest BLE-Stack software which is v2.1.1 at the time of this writing. You can download this at here TI BLE Stack

ANCS overview

The purpose of ANCS is to give BLE accessories a simple and convenient way to access many kinds of notifications that are generated on iOS devices, like incoming calls, missing calls, new emails, etc.

In order to consume ANCS notifications, the accessory must be a peripheral device that implements the GATT client.

This means that the iOS implements the GATT server, and the data it is providing will be the notifications.

ANCS Spec Summary

The ANCS spec document should be referenced at all times, this is only a short summary of the information contained at theANCS Spec

There are three key characteristics to ANCS:

Notification Source: UUID: 9FBF120D-6301-42D9-8C58-25E699A21DBD (notifiable)
Control Point: UUID: 69D1D8F3-45E1-49A8-9821-9BBDFDAAD9D9 (writeable with response)
Data Source: UUID: 22EAC6E9-24D6-4BB5-BE44-B36ACE7C7BFB (notifiable)

Notification Source

This is a notify only characteristic in which the NP will use to inform the NC about noticications being added, removed, or updated. The NC must support this servce. Our sample app caches notification UIDs see on this characteristic and uses the control point characteristic to gain more data about them.

Control Point

This sample app uses the control point to write commands to the NP regarding notifications. Some example commands are getting more info about a notification or the app that provided it, and taking positive or negative action. Writes to the control point will optionally trigger a data response on the data source characteristic.

Control Point

This sample app uses notification data from this characteristic to populate the user's display.

Service Soliciation

This demo does not require the user to write any iOS application code, instead the user may connect, pair, and bond the Notification Consumer (NC) device using the iOS settings menu. However, 3rd party apps such as LightBlue can be used to initiate the connection.

Generally BLE devices do not appear in the iOS settings menu. However, soliciting a service from the iOS device will cause it to appear in the settings menu. See section 3.11.4 of Apple Bluetooth Accessory Design Guidelines for details. In this case, we will solicit the ANCS service by including the service solicitation flag in addition to the 128bit ANCS UUID in our advertisement data. See the code snippet below

static uint8_t AncsApp_advData[] =
{// Flags; this sets the device to use limited discoverable// mode (advertises for 30 seconds at a time) instead of general// discoverable mode (advertises indefinitely)0x02, // length of this data GAP_ADTYPE_FLAGS,GAP_ADTYPE_FLAGS_GENERAL | GAP_ADTYPE_FLAGS_BREDR_NOT_SUPPORTED,// Service Solicitation: this peripheral (NC) is looking for the ANCS service// on the iOS device. As per Apple Bluetooth Design Guidelines, soliciting// the ANCS service will cause the device to show up in the iOS settings app0x11, // length of this dataGAP_ADTYPE_SERVICES_LIST_128BIT,// ANCS service UUIDANCS_SVC_UUID
};

The ANCS service UUIDs is 7905F431-B5CE-4E99-A40F-4B1E122D00D0, this and other necessary information can be found in the ANCS spec.

Pairing and Bonding

As per the ANCS spec, all characteristics of the ANCS service require authorization. This requires the NC to pair (and optionally bond) to the iOS device before meaningful notification data can be shared. From the Apple Bluetooth Accessory Design Guidelines guide section 3.9:

"The accessory should not request pairing until an ATT request is rejected using the Insufficient Authentication error code. See the Bluetooth 4.0 specification, Volume 3, Part F, Section 4 for details. … Similarly, if the iOS device acts as a Central and a GATT server, it may reject an ATT request using the Insufficient Authentication error code. The accessory should initiate the security procedure for pairing in response"

In the case of this sample application the NC implemnents the GATT client, so we must wait for the iOS device to reject a GATT transaction with insufficient authentication before starting the pairing process. See the code snippet below:

//ANCS requires authentication, if the NP attempts to read/write chars on the//NP without proper authentication, the NP will respond with insufficent_athen//error to which we must respond with a slave security requestelse if(pMsg->method == ATT_ERROR_RSP &&pMsg->msg.errorRsp.reqOpcode == ATT_WRITE_REQ &&pMsg->msg.errorRsp.errCode == ATT_ERR_INSUFFICIENT_AUTHEN){uint16 conn_handle;GAPRole_GetParameter(GAPROLE_CONNHANDLE, &conn_handle);uint8_t mitm;uint8_t bonding;GAPBondMgr_GetParameter(GAPBOND_MITM_PROTECTION, &mitm);GAPBondMgr_GetParameter(GAPBOND_BONDING_ENABLED, &bonding);uint8_t authRequest = ((mitm & 0x01) << 2) | ((bonding & 0x01) << 1) |(bonding & 0x01);GAP_SendSlaveSecurityRequest(conn_handle, authRequest);}

Running the Demo

There are two build configurations that ship with this sample app. One for the SmartRF06(SRF06) + CC2650EM-7ID and one for the CC2650 LaunchPad.

Please select right configuration for your development platform:

CC2640App – FlashROM –> This is the LaunchPad config
CC2640App – FlashROM_SRF06 –> This is the SmartRF06 + EM config

Once the target hardware has been selected, connect it via USB cable and build the BLE-Stack project and load it onto the device

Note that the SmartRF06 uses an XDS100v3 debugger where the CC2650 LaunchPad uses an XDS110, note you may > need to switch the debugger to match your hardware*

Build the application project (using appropriate build config and debugger) and load it onto your development hardware

(LaunchPad Only) Since the LaunchPad doesn't have an LCD present, this project will use a UART logger to implement display functionality. In order to view these UART messages, you will need to connect to a serial terminal on your PC using these settings:

115200 baud
8N1 frame

More information on the UART logger can be found at: UART Log Readme

Once started the ANCS device should look like this over the terminal: 

(SRF06 Only) The SmartRF06 build config will rely on the on board LCD display to show ANCS data. A sample is shown below. A general rule of thumb is:

LCD_PAGE0 : ANCS APP
LCD_PAGE1 : Own BDADDR
LCD_PAGE2 : GAP State
LCD_PAGE3 : Peer BDADDR
LCD_PAGE4 : Pair/Bond state/passcode prompt
LCD_PAGE5 : Latest Notification line1
LCD_PAGE6 : Latest Notification line2

LCD_PAGE7 : Latest Notification line3

See the screenshot below for example: 

When advertising the ANCS demo will turn on Board_LED2, this LED will be turned off when connected

When an urgent notification such as a phone call comes in, Board_LED2 will be turned on.

The user can interact with some notifications with positive or negative actions (such as ignoring or answering a call) these are accomplished by button presses.

Button up/left button: positive action
Button down/right button: negative action

Note that positive and negative actions are not available for all notifications. See the ANCS spec for details.

da qin zheng sheng：

回复 Yue TANG:

谢谢TY经验分享，ancs目前能支持安卓手机不？

wb：

回复 xyz549040622:

1，手机上不安装定制的 app，也能实现这个功能吗？ 就像蓝牙耳机一样，对好码，就可以使用。

2，还有android，ios 都能实现吗？

xyz549040622：

回复 wb:

虽然没做过，但是感觉和手机端关系不大，和你蓝牙端的程序处理关系很大。