虚拟架子鼓------移植Beacon到BlueMicrosystem2

littleshrimp

虚拟架子鼓------移植Beacon到BlueMicrosystem2 [复制链接]

虚拟架子鼓正常情况下应该由2个鼓棒组成

为了方便我使用SensorTile通过BLE的广播方式把传感器数据发送到手机

这样一个手机就可以收到多个SensorTile的数据，无需建立连接

BlueMicrosystem2_V2.2.0例程已经实现了蓝牙和传感器整合功能

现在需要对其做些改动，让它实现广播数据的功能

STM32CubeExpansion_BLE1_V2.8.0库中包括一个Beacon例程，现在需要把里边的几个函数移植到BlueMicrosystem2_V2.2.0里

就可以让BlueMicrosystem2_V2.2.0实现数据广播功能

添加STM32CubeExpansion_BLE1_V2.8.0\Middlewares\ST\STM32_BlueNRG\SimpleBlueNRG_HCI\includes

和STM32CubeExpansion_BLE1_V2.8.0\Middlewares\ST\STM32_BlueNRG\SimpleBlueNRG_HCI\hci

中的hci_le.c和hci_le.h到BlueMicrosystem2_V2.2.0对应的文件夹

添加宏定义OSX_BMS_LICENSE_H_FILE到IAR工程

去掉除OSX_MOTION_FX以外的License_init代码

不然会提示其它初始化失败，因为头文件中定修改了osx_mfx_license

添加下边宏定义到main.c

#define MAC_ADDRESS 0x12, 0x34, 0x00, 0xE1, 0x80, 0x03

#define ADVERTISING_INTERVAL_INCREMENT (16)

添加Beacon初始化代码到main.c

/* Initialize the BlueNRG SPI driver */

BNRG_SPI_Init();

/* Initialize the BlueNRG HCI */

HCI_Init();

/* Reset BlueNRG hardware */

BlueNRG_RST();

BlueNRG_Init();

Beacon_Init();

添加Beacon函数到main.c

/**

* @brief Initialize the BlueNRG

*

* @param None

* @retval None

*/

void BlueNRG_Init(void)

{

tBleStatus ret = BLE_STATUS_SUCCESS;

uint16_t service_handle, dev_name_char_handle, appearance_char_handle;

uint8_t SERVER_BDADDR[] = { MAC_ADDRESS };

uint8_t hwVersion;

uint16_t fwVersion;

uint8_t bnrg_expansion_board = IDB04A1; /* at startup, suppose the X-NUCLEO-IDB04A1 is used */

/* get the BlueNRG HW and FW versions */

getBlueNRGVersion(&hwVersion, &fwVersion);

if (hwVersion > 0x30) { /* X-NUCLEO-IDB05A1 expansion board is used */

bnrg_expansion_board = IDB05A1;

}

ret = aci_hal_write_config_data(CONFIG_DATA_PUBADDR_OFFSET,

CONFIG_DATA_PUBADDR_LEN,

SERVER_BDADDR);

if (ret != BLE_STATUS_SUCCESS)

{

__asm("nop");

}

ret = aci_gatt_init();

if (ret != BLE_STATUS_SUCCESS)

{

__asm("nop");

}

if (bnrg_expansion_board == IDB05A1) {

ret = aci_gap_init_IDB05A1(GAP_PERIPHERAL_ROLE_IDB05A1, 0, 0x07, &service_handle, &dev_name_char_handle, &appearance_char_handle);

}

else {

ret = aci_gap_init_IDB04A1(GAP_PERIPHERAL_ROLE_IDB04A1, &service_handle, &dev_name_char_handle, &appearance_char_handle);

}

if (ret != BLE_STATUS_SUCCESS)

{

__asm("nop");

}

ret = aci_hal_set_tx_power_level(1,4);

if (ret != BLE_STATUS_SUCCESS)

{

__asm("nop");

}

tBleStatus Beacon_Init(void)

{

tBleStatus ret = BLE_STATUS_SUCCESS;

/* Disable scan response. */

hci_le_set_scan_resp_data(0, NULL);

uint16_t AdvertisingInterval = (10 * ADVERTISING_INTERVAL_INCREMENT / 10);

/* Put the device in a non-connectable mode. */

ret = aci_gap_set_discoverable(ADV_NONCONN_IND, /*< Advertise as non-connectable, undirected. */

AdvertisingInterval, AdvertisingInterval, /*< Set the advertising interval as 700 ms (0.625 us increment). */

PUBLIC_ADDR, NO_WHITE_LIST_USE, /*< Use the public address, with no white list. */

0, NULL, /*< Do not use a local name. */

0, NULL, /*< Do not include the service UUID list. */

0, 0); /*< Do not set a slave connection interval. */

if (ret != BLE_STATUS_SUCCESS)

{

return ret;

}

/* Remove the TX power level advertisement (this is done to decrease the packet size). */

ret = aci_gap_delete_ad_type(AD_TYPE_TX_POWER_LEVEL);

if (ret != BLE_STATUS_SUCCESS)

{

return ret;

}

uint8_t service_data[] =

{

23, /*< Length. */

AD_TYPE_SERVICE_DATA, /*< Service Data data type value. */

0x00, /*< Reserved. */

0x00 /*< Reserved. */

};

uint8_t service_uuid_list[] =

{

3, /*< Length. */

AD_TYPE_16_BIT_SERV_UUID_CMPLT_LIST, /*< Complete list of 16-bit Service UUIDs data type value. */

0xAA, 0xFE /*< 16-bit Eddystone UUID. */

};

uint8_t flags[] =

{

2, /*< Length. */

AD_TYPE_FLAGS, /*< Flags data type value. */

(FLAG_BIT_LE_GENERAL_DISCOVERABLE_MODE | FLAG_BIT_BR_EDR_NOT_SUPPORTED) /*< BLE general discoverable, without BR/EDR support. */

};

/* Update the service data. */

ret = aci_gap_update_adv_data(sizeof(service_data), service_data);

if (ret != BLE_STATUS_SUCCESS)

{

return ret;

}

/* Update the service UUID list. */

ret = aci_gap_update_adv_data(sizeof(service_uuid_list), service_uuid_list);

if (ret != BLE_STATUS_SUCCESS)

{

return ret;

}

/* Update the adverstising flags. */

ret = aci_gap_update_adv_data(sizeof(flags), flags);

if (ret != BLE_STATUS_SUCCESS)

{

return ret;

}

return ret;

}

tBleStatus UpdateAdv(uint8_t * buff,uint8_t len)

{

tBleStatus ret = BLE_STATUS_SUCCESS;

uint8_t service_data[] =

{

23, /*< Length. */

AD_TYPE_SERVICE_DATA, /*< Service Data data type value. */

0x00,

};

memcpy(&service_data[2],buff,len);

memset(&service_data[2+len],0,22-len);

/* Update the service data. */

ret = aci_gap_update_adv_data(sizeof(service_data), service_data);

if (ret != BLE_STATUS_SUCCESS)

{

return ret;

}

return ret;

}

现在BlueMicrosystem2_V2.2.0已经可以广播想要的数据，接下来是修改整合算法，让它不需要手机连接就能发送数据

BlueMicrosystem2_V2.2.0例程里处理整合算法的函数是在main.c中的ComputeQuaternions里

ComputeQuaternions包含了9轴传感器的读取（加速度、脱落仪、磁场）和MotionFX融合数据计算和通过蓝牙发送

ComputeQuaternions函数是在主函数中调用的

通过判断Quaternion标志

/* osxMotionFX */

if(Quaternion) {

Quaternion=0;

ComputeQuaternions();

}

Quaternion标志是通过时器中断HAL_TIM_OC_DelayElapsedCallback置1

前提是SensorTile已经与手机中的BlueMS连接，并且BlueMS切换到对应的界面

if (W2ST_CHECK_CONNECTION(W2ST_CONNECT_QUAT)) {

Quaternion=1;

}

如果要改成广播方式就不需要对是否与连接进行判断

可以把ComputeQuaternions函数的调用直接放在HAL_TIM_OC_DelayElapsedCallback定时器中断函数中

void HAL_TIM_OC_DelayElapsedCallback(TIM_HandleTypeDef *htim)

{

uint32_t uhCapture=0;

/* Code for MotionFX and MotionGR integration - Start Section */

/* TIM1_CH1 toggling with frequency = 100Hz */

if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1)

{

uhCapture = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1);

/* Set the Capture Compare Register value */

__HAL_TIM_SET_COMPARE(&TimCCHandle, TIM_CHANNEL_1, (uhCapture + DEFAULT_uhCCR1_Val));

ComputeQuaternions();

}

在ComputeQuaternions函数中把原来的通过蓝牙连接方式发送判断改为通过广播方式

再把要发送的数据改为与鼓棒相关的

int32_t y = ((int32_t)(MotionFX_Engine_Out->rotation_9X[2] * 100));

int32_t z = ((int32_t)(MotionFX_Engine_Out->rotation_9X[0] * 100));

STORE_LE_16(buff+0,drumCount);

STORE_LE_16(buff+2,y);

STORE_LE_16(buff+4,z);

UpdateAdv(buff,6);

drumCount += PeakCounter(((int32_t)(MotionFX_Engine_Out->rotation_9X[2] * 100)),100,6,250);

其中rotation_9X[0] 和rotation_9X[2] Android用来识别鼓棒的落点，并通过3D动画方式显示2根鼓棒

drumCount是通过落棒检测函数PeakCounter判断鼓棒是否落下

每次加1

由SensorTile实现是为了实时性更好，毕竟SensorTile通过蓝牙和手机通信的速率有限

通过上面的操作SensorTile就可以将相应的数据通过广播发送给手机

剩下就是通过手机接收数据并显示，再通过判断落点触发相应的鼓声播放

alberthink

虾哥，鼓槌敲击的数据的确不需要太大的带宽。然而用不建立蓝牙连接的方式是否会产生延迟和丢失数据的情况? 在是如何来设计和处理的呢？

littleshrimp

alberthink 发表于 2017-4-20 09:07
虾哥，鼓槌敲击的数据的确不需要太大的带宽。然而用不建立蓝牙连接的方式是否会产生延迟和丢失数据的情况? ...

延时应该不会，数据丢失有可能
SensorTile每次在检测到敲击时都是在原有数据基础上+1
只要广播的数据够快，即使有数据丢失，手机在下一次收到数据后也能检测到有敲击发生
不会有太大影响

sunduoze

虾大加油↖(^ω^)↗ 顶一下

虚拟架子鼓------移植Beacon到BlueMicrosystem2 [复制链接]

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