Akihiro Masuda / Mbed 2 deprecated BLENano_sample02

BLE Nano - HMC5883 communication sample

Dependencies:   BLE_API mbed nRF51822

main.cpp@1:aa93d2588721, 2015-10-27 (annotated)

Committer:
AkihiroMasuda
Date:
Tue Oct 27 09:54:25 2015 +0000
Revision:
1:aa93d2588721
Parent:
0:31c9498472f6 
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AkihiroMasuda 0:31c9498472f6 1 #include "mbed.h"
AkihiroMasuda 0:31c9498472f6 2 #include "BLE.h"
AkihiroMasuda 0:31c9498472f6 3
AkihiroMasuda 0:31c9498472f6 4 BLEDevice ble;
AkihiroMasuda 0:31c9498472f6 5
AkihiroMasuda 0:31c9498472f6 6 /** サービス・キャラクタリスティックの定義 **/
AkihiroMasuda 0:31c9498472f6 7 // サービスのUUID
AkihiroMasuda 0:31c9498472f6 8 const uint8_t uuid_service1_a[16] = {0x2c,0x81,0x00,0x01,0x29,0x49,0x42,0xe2,0x83,0x68,0x75,0x64,0x6a,0xb7,0xe1,0x34};
AkihiroMasuda 0:31c9498472f6 9 // キャラクタリスティックのUUID
AkihiroMasuda 0:31c9498472f6 10 const uint8_t uuid_char1_a[16] = {0x2c,0x81,0x00,0x02,0x29,0x49,0x42,0xe2,0x83,0x68,0x75,0x64,0x6a,0xb7,0xe1,0x34};
AkihiroMasuda 0:31c9498472f6 11 const UUID uuid_service1(uuid_service1_a);
AkihiroMasuda 0:31c9498472f6 12 const UUID uuid_char1(uuid_char1_a);
AkihiroMasuda 0:31c9498472f6 13 const int char1_len = 12; //キャラクタリスティック長さ
AkihiroMasuda 0:31c9498472f6 14 uint8_t char1_val[char1_len] = {0};
AkihiroMasuda 0:31c9498472f6 15 GattCharacteristic char1 ( uuid_char1, //UUID
AkihiroMasuda 0:31c9498472f6 16 (uint8_t *)char1_val, //初期値
AkihiroMasuda 0:31c9498472f6 17 char1_len, //初期データ長
AkihiroMasuda 0:31c9498472f6 18 char1_len, //最大データ長
AkihiroMasuda 0:31c9498472f6 19 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ); //プロパティ
AkihiroMasuda 0:31c9498472f6 20 GattCharacteristic *characteristics[] = {&char1, };
AkihiroMasuda 0:31c9498472f6 21 int char_num = sizeof(characteristics) / sizeof(GattCharacteristic *);
AkihiroMasuda 0:31c9498472f6 22 GattService service1( uuid_service1, //UUID
AkihiroMasuda 0:31c9498472f6 23 characteristics, //キャラクタリスティックの集合
AkihiroMasuda 0:31c9498472f6 24 char_num ); //キャラクタリスティック数
AkihiroMasuda 0:31c9498472f6 25
AkihiroMasuda 1:aa93d2588721 26 /* HMC5883L I2C通信用変数定義 */
AkihiroMasuda 1:aa93d2588721 27 // I2C設定。SDA＝ピン10、SCL＝ピン8
AkihiroMasuda 1:aa93d2588721 28 I2C i2c(p10, p8);
AkihiroMasuda 1:aa93d2588721 29 //センサ１ ON/OFF制御＝ピン28
AkihiroMasuda 1:aa93d2588721 30 DigitalOut ctrlPin1(p28);
AkihiroMasuda 1:aa93d2588721 31 //センサ２ ON/OFF制御＝ピン29
AkihiroMasuda 1:aa93d2588721 32 DigitalOut ctrlPin2(p29);
AkihiroMasuda 1:aa93d2588721 33 // HCM5883 I2C Address
AkihiroMasuda 1:aa93d2588721 34 const int i2cAddr = 0x3C;
AkihiroMasuda 0:31c9498472f6 35
AkihiroMasuda 0:31c9498472f6 36 /* 指定番号のセンサを有効にする */
AkihiroMasuda 1:aa93d2588721 37 void enableSensor(int num){
AkihiroMasuda 1:aa93d2588721 38 if (num==1){
AkihiroMasuda 0:31c9498472f6 39 ctrlPin1 = 1;
AkihiroMasuda 0:31c9498472f6 40 ctrlPin2 = 0;
AkihiroMasuda 0:31c9498472f6 41 }else{
AkihiroMasuda 0:31c9498472f6 42 ctrlPin1 = 0;
AkihiroMasuda 0:31c9498472f6 43 ctrlPin2 = 1;
AkihiroMasuda 0:31c9498472f6 44 }
AkihiroMasuda 0:31c9498472f6 45 }
AkihiroMasuda 0:31c9498472f6 46
AkihiroMasuda 0:31c9498472f6 47 /* センサを初期化する */
AkihiroMasuda 1:aa93d2588721 48 void initSensor(int num){
AkihiroMasuda 0:31c9498472f6 49 // 有効センサの指定
AkihiroMasuda 1:aa93d2588721 50 enableSensor(num);
AkihiroMasuda 1:aa93d2588721 51 /* モードレジスタ設定 */
AkihiroMasuda 1:aa93d2588721 52 /* Continuous-Measurement にする */
AkihiroMasuda 0:31c9498472f6 53 char cmd[2];
AkihiroMasuda 1:aa93d2588721 54 // モードレジスタのアドレス
AkihiroMasuda 1:aa93d2588721 55 cmd[0] = 0x02;
AkihiroMasuda 1:aa93d2588721 56 // モードレジスタに書き込む値。
AkihiroMasuda 1:aa93d2588721 57 cmd[1] = 0x00;
AkihiroMasuda 1:aa93d2588721 58 // コマンド送信
AkihiroMasuda 1:aa93d2588721 59 i2c.write(i2cAddr, cmd, 2);
AkihiroMasuda 0:31c9498472f6 60 }
AkihiroMasuda 0:31c9498472f6 61
AkihiroMasuda 0:31c9498472f6 62 /* センサ値を取得する */
AkihiroMasuda 1:aa93d2588721 63 void readSensor(char* buf, int num){
AkihiroMasuda 0:31c9498472f6 64 // 有効センサの指定
AkihiroMasuda 1:aa93d2588721 65 enableSensor(num);
AkihiroMasuda 1:aa93d2588721 66 /* センサ値取得 */
AkihiroMasuda 0:31c9498472f6 67 char cmd[1];
AkihiroMasuda 1:aa93d2588721 68 //センサ値取得用レジスタのアドレス
AkihiroMasuda 1:aa93d2588721 69 cmd[0] = 0x3;
AkihiroMasuda 1:aa93d2588721 70 //コマンド送信
AkihiroMasuda 1:aa93d2588721 71 i2c.write(i2cAddr, cmd, 1);
AkihiroMasuda 1:aa93d2588721 72 //6バイト分データを読み取る
AkihiroMasuda 1:aa93d2588721 73 //X,Z,Y軸の順に各2バイト
AkihiroMasuda 1:aa93d2588721 74 i2c.read(i2cAddr|1, buf, 6);
AkihiroMasuda 0:31c9498472f6 75 }
AkihiroMasuda 0:31c9498472f6 76
AkihiroMasuda 0:31c9498472f6 77 /* BLE接続切断時のコールバック */
AkihiroMasuda 0:31c9498472f6 78 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason){
AkihiroMasuda 0:31c9498472f6 79 ble.startAdvertising();
AkihiroMasuda 0:31c9498472f6 80 }
AkihiroMasuda 0:31c9498472f6 81
AkihiroMasuda 0:31c9498472f6 82 /* BLE接続時のコールバック */
AkihiroMasuda 0:31c9498472f6 83 void onConnectionCallback(const Gap::ConnectionCallbackParams_t *params){
AkihiroMasuda 0:31c9498472f6 84 }
AkihiroMasuda 0:31c9498472f6 85
AkihiroMasuda 0:31c9498472f6 86 /* BLE READ要求受信時のコールバック */
AkihiroMasuda 0:31c9498472f6 87 void onDataReadCallback(const GattReadCallbackParams *eventDataP){
AkihiroMasuda 0:31c9498472f6 88 }
AkihiroMasuda 0:31c9498472f6 89
AkihiroMasuda 0:31c9498472f6 90
AkihiroMasuda 0:31c9498472f6 91 /* タイマーによるコールバック関数 */
AkihiroMasuda 0:31c9498472f6 92 void periodicCallback(void){
AkihiroMasuda 0:31c9498472f6 93 // ２つのセンサ値を取得
AkihiroMasuda 1:aa93d2588721 94 readSensor((char*)&(char1_val[0]), 1);
AkihiroMasuda 1:aa93d2588721 95 readSensor((char*)&(char1_val[6]), 2);
AkihiroMasuda 0:31c9498472f6 96 // キャラクタリスティック値の更新
AkihiroMasuda 0:31c9498472f6 97 GattAttribute::Handle_t handle =
AkihiroMasuda 0:31c9498472f6 98 char1.getValueAttribute().getHandle();
AkihiroMasuda 0:31c9498472f6 99 ble.updateCharacteristicValue(
AkihiroMasuda 0:31c9498472f6 100 handle, //対象のキャラクタリスティックのハンドル
AkihiroMasuda 0:31c9498472f6 101 (uint8_t *)&char1_val,//更新後のデータ
AkihiroMasuda 0:31c9498472f6 102 sizeof(char1_val)); //データ長
AkihiroMasuda 0:31c9498472f6 103 }
AkihiroMasuda 0:31c9498472f6 104
AkihiroMasuda 0:31c9498472f6 105 /* main */
AkihiroMasuda 0:31c9498472f6 106 int main(void){
AkihiroMasuda 0:31c9498472f6 107
AkihiroMasuda 0:31c9498472f6 108 // I2C初期化
AkihiroMasuda 0:31c9498472f6 109 initSensor(1);
AkihiroMasuda 0:31c9498472f6 110 initSensor(2);
AkihiroMasuda 0:31c9498472f6 111
AkihiroMasuda 0:31c9498472f6 112 /* BLE初期化 */
AkihiroMasuda 0:31c9498472f6 113 ble.init();
AkihiroMasuda 0:31c9498472f6 114 ble.onConnection(onConnectionCallback);
AkihiroMasuda 0:31c9498472f6 115 ble.onDisconnection(disconnectionCallback);
AkihiroMasuda 0:31c9498472f6 116 ble.onDataRead(onDataReadCallback);
AkihiroMasuda 0:31c9498472f6 117
AkihiroMasuda 0:31c9498472f6 118 /*　 アドバタイズ設定 */
AkihiroMasuda 0:31c9498472f6 119 //Centralからのアドバタイズメントパケットの受信可否の設定
AkihiroMasuda 0:31c9498472f6 120 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
AkihiroMasuda 0:31c9498472f6 121 // パケットに含めるデバイス名称設定
AkihiroMasuda 0:31c9498472f6 122 const char device_name[] = "BLE Nano";
AkihiroMasuda 0:31c9498472f6 123 ble.accumulateAdvertisingPayload( GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)device_name, sizeof(device_name));
AkihiroMasuda 0:31c9498472f6 124 // Centralからの接続可を示す設定
AkihiroMasuda 0:31c9498472f6 125 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
AkihiroMasuda 0:31c9498472f6 126 // アドバタイズ間隔設定。 0.625msの倍数を指定する。ここでは100ms.
AkihiroMasuda 0:31c9498472f6 127 ble.setAdvertisingInterval(160);
AkihiroMasuda 0:31c9498472f6 128 //アドバタイズ開始
AkihiroMasuda 0:31c9498472f6 129 ble.startAdvertising();
AkihiroMasuda 0:31c9498472f6 130
AkihiroMasuda 0:31c9498472f6 131 /* サービス登録 */
AkihiroMasuda 0:31c9498472f6 132 ble.addService(service1);
AkihiroMasuda 0:31c9498472f6 133
AkihiroMasuda 0:31c9498472f6 134 /* タイマー設定 */
AkihiroMasuda 0:31c9498472f6 135 Ticker ticker;
AkihiroMasuda 0:31c9498472f6 136 ticker.attach(
AkihiroMasuda 0:31c9498472f6 137 periodicCallback, //コールバックされる関数
AkihiroMasuda 0:31c9498472f6 138 1 ); //コールバック間隔[秒]
AkihiroMasuda 0:31c9498472f6 139
AkihiroMasuda 0:31c9498472f6 140 /* メインループ*/
AkihiroMasuda 0:31c9498472f6 141 while (true) {
AkihiroMasuda 0:31c9498472f6 142 ble.waitForEvent();
AkihiroMasuda 0:31c9498472f6 143 }
AkihiroMasuda 0:31c9498472f6 144 }