Ble Demo with Raspberry PI

Dependencies:   BLE_API mbed nRF51822

Fork of BLE_DEMO_SPI_HARDCODE by HM_IOT_Demo

main.cpp

Committer:
hmiot
Date:
2017-09-21
Revision:
15:ef3cf37827d2
Parent:
14:f84a9745c10a
Child:
16:5bd717644078

File content as of revision 15:ef3cf37827d2:

/************************************************************************
*                                                                       *
*                                                                       *
************************************************************************/

#include "hm_config.h"

DiscoveredCharacteristic lightCharacteristic;
static s_serviceInfo lightChar = {NULL,NULL,NULL,NULL};
Serial pc(USBTX, USBRX);
void bleint();
void waitBleEvent();
void ble_actions(int spi_data);
uint8_t statusWR;
SPISlave spiSlave(P0_9, P0_11, P0_8, P0_10);


void advertisementCallback(const Gap::AdvertisementCallbackParams_t *params) {
    uint8_t con_status =0;
     //0x51 for Magic light 
    //0x5A
        if (params->peerAddr[0] == 0x5A){ // 0x2F for red bear1.5 /* !ALERT! Alter this filter to suit your device. */
       
           pc.printf("adv peerAddr[%02x %02x %02x %02x %02x %02x] rssi %d, isScanResponse %u, AdvertisementType %u\r\n",
           params->peerAddr[5], params->peerAddr[4], params->peerAddr[3], params->peerAddr[2], params->peerAddr[1], params->peerAddr[0],
           params->rssi, params->isScanResponse, params->type);
           pc.printf("Data Length : %d\r\n",params->advertisingDataLen);
           con_status = BLE::Instance().gap().connect(params->peerAddr, Gap::ADDR_TYPE_PUBLIC, NULL, NULL);
           pc.printf("Connection Status : %d\r\n",con_status);
           connect_status = 1;
           BLE::Instance().gap().stopScan();
           
        }else{
            printf("Not Matched your device\r\n");
            return;
        }
 }

void serviceDiscoveryCallback(const DiscoveredService *service) {
    pc.printf("Service Discovery Callback\r\n");
    if (service->getUUID().shortOrLong() == UUID::UUID_TYPE_SHORT) {
        pc.printf("S UUID-%x attrs[%u %u]\r\n", service->getUUID().getShortUUID(), service->getStartHandle(), service->getEndHandle());
    } else {
        pc.printf("S UUID-");
        const uint8_t *longUUIDBytes = service->getUUID().getBaseUUID();
        for (unsigned i = 0; i < UUID::LENGTH_OF_LONG_UUID; i++) {
            printf("%02x", longUUIDBytes[i]);
        }
        pc.printf(" attrs[%u %u]\r\n", service->getStartHandle(), service->getEndHandle());
    }
}

void characteristicDiscoveryCallback(const DiscoveredCharacteristic *characteristicP) {
    pc.printf("  C UUID-%x valueAttr[%u] props[%x]\r\n", characteristicP->getUUID().getShortUUID(), characteristicP->getValueHandle(), (uint8_t)characteristicP->getProperties().broadcast());
    
    if (characteristicP->getUUID().getShortUUID() == 0xffe9) { /* !ALERT! Alter this filter to suit your device. */
       lightCharacteristic = *characteristicP;
       pc.printf("Matched char UUID\r\n");
       printf("Conn Handle = %dand %d \r\n",characteristicP->getConnectionHandle(), lightCharacteristic.getConnectionHandle());
       printf("Value Handle = %d and %d\r\n",characteristicP->getValueHandle(),lightCharacteristic.getValueHandle());
       AddCharNodes(lightCharacteristic);
       charDiscover = 1;
       serviceDiscover = true;
     }else {
        printf("Not Matched char UUID\r\n");
    }
}

void AddCharNodes(DiscoveredCharacteristic light_Characteristic)
{
    printf("Add Char Nodes\r\n");
    lightCharacteristic_t *ptr_temp_char;
    ptr_temp_char = lightChar.services_Char[0];

    
    if(NULL == ptr_temp_char)
    {
        ptr_temp_char = new lightCharacteristic_t;
        lightChar.services_Char[0] = ptr_temp_char;
    }
    else
    {    
        while(NULL != ptr_temp_char->nextChar)
                {
                    ptr_temp_char = ptr_temp_char->nextChar;
                }  
            
        /* add a new node */
        ptr_temp_char->nextChar = new lightCharacteristic_t;           
        ptr_temp_char = ptr_temp_char->nextChar;
    }
            
    /* assign data to the node */
    ptr_temp_char->u_characteristicID = 1;
    printf("Conn Handle = %d\r\n",light_Characteristic.getConnectionHandle());
    printf("Value Handle = %d\r\n",light_Characteristic.getValueHandle());
    ptr_temp_char->connHandle = light_Characteristic.getConnectionHandle();
    ptr_temp_char->valueHandle = light_Characteristic.getValueHandle();
    ptr_temp_char->nextChar = NULL;  
}

void discoveryTerminationCallback(Gap::Handle_t connectionHandle) {
    pc.printf("terminated SD for handle %u\r\n", connectionHandle);
    serviceDiscover = false;
}

void connectionCallback(const Gap::ConnectionCallbackParams_t *params) {
    pc.printf("Connection Callback\n\r");
    if (params->role == Gap::CENTRAL) {
        pc.printf("Service and characterstics discovery callback\r\n");
        BLE::Instance().gattClient().onServiceDiscoveryTermination(discoveryTerminationCallback);
        BLE::Instance().gattClient().launchServiceDiscovery(params->handle, serviceDiscoveryCallback, characteristicDiscoveryCallback, 0xffe5, 0xffe9);
        // 0xffe5 --> Services UUID
        // 0xffe9 --> Characteristics UUID
    }
}

void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) {
    pc.printf("disconnected\r\n");
    BLE::Instance().gap().startScan(advertisementCallback);
}


/**
 * Callback triggered when the ble initialization process has finished
 */
void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
{
    BLE&        ble   = params->ble;
    
    pc.printf("Ble Init\n\r");
    /* Ensure that it is the default instance of BLE */
    if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
        return;
    }
 
    ble.gap().onConnection(connectionCallback);
    ble.gap().onDisconnection(disconnectionCallback);
    ble.gap().setScanParams(1000, 800);
    ble.gap().startScan(advertisementCallback);

}

void light_actions(int * service_char){
    lightCharacteristic_t *ptr_tmp = NULL;
    ptr_tmp = lightChar.services_Char[0];
    uint8_t numCount;
    if(connect_status)
    {

        switch(service_char[2])
        {
            case TURN_OFF: // off 
                write_data[0]=0x56;
                write_data[1]=0x00;
                write_data[2]=0x00;
                write_data[3]=0x00;
                write_data[4]=0x00;
                write_data[5]=0xf0;
                write_data[6]=0xaa;
                error_status = BLE::Instance().gattClient().write(GattClient::GATT_OP_WRITE_CMD,ptr_tmp->connHandle,ptr_tmp->valueHandle,8,write_data);
                break;
                       
            case TURN_ON: //on
                pre_write_data[0]=0x56;
                pre_write_data[1]=0xDE;
                pre_write_data[2]=0x8E;
                pre_write_data[3]=0xEE;
                pre_write_data[4]=0x00;
                pre_write_data[5]=0xf0;
                pre_write_data[6]=0xaa;
                
                error_status = BLE::Instance().gattClient().write(GattClient::GATT_OP_WRITE_CMD,ptr_tmp->connHandle,ptr_tmp->valueHandle,8,pre_write_data);
                break;
                       
            case COLOR: // Color
                write_data[0]=0x56;
                write_data[1]=lightColor[service_char[3]][0];//0xff
                write_data[2]=lightColor[service_char[3]][1];//0x00;
                write_data[3]=lightColor[service_char[3]][2];//0x00;
                write_data[4]=0x00;
                write_data[5]=0xf0;
                write_data[6]=0xaa;
                for(numCount=0; numCount < 7; numCount++){
                  pre_write_data[numCount] = write_data[numCount];
                }
                first_on=false;
                error_status = BLE::Instance().gattClient().write(GattClient::GATT_OP_WRITE_CMD,ptr_tmp->connHandle,ptr_tmp->valueHandle,8,write_data);
                break;
                       
            default:
                printf("Invalid Options\r\n");
        } 
            printf("Error Status =%d\n\r",error_status);
    }
    
}

void datancpy(char pre_write[], char writeData[], int data_size){
    int numCount;
    for(numCount=0; numCount <= data_size; numCount++){
        pre_write[numCount] = writeData[numCount];
    }
    
}

void bleint()
{
    printf("Init\r\n");
    BLE &ble = BLE::Instance();
    BLE::Instance().init(bleInitComplete);
}

int main()
{
    // Serial port configuration
    pc.baud(9600);
    wait(8.0);
    pc.printf("Start\n\r");

    spiSlave.reply(191);
    statusWR=1;
    bleint();
    bufferSize = 0;
    while(1){
        //printf("loop\r\n");
        if(!(connect_status && charDiscover))
            waitBleEvent();
            
        if(spiSlave.receive()){
            // printf("Slave Read loop1\r\n");
            spiRX[bufferSize] = spiSlave.read();
            spiSlave.reply(spiRX[bufferSize]);
            bufferSize++;
            
            if(bufferSize >= 5){
                bufferSize=0;
                light_actions(spiRX);
                spiSlave.reply(spiRX[2]); //(0xAA);
                
                if(statusWR >=4)
                {   wait_ms(500);
                    BLE::Instance().shutdown();
                    statusWR =1;
                    connect_status =0;
                    charDiscover =0;
                    serviceDiscover = true;
                    bleint();
                }
                statusWR++;
            }
            
        } 
        
        
        
    }

}

void waitBleEvent()
{
    while(serviceDiscover || BLE::Instance().gattClient().isServiceDiscoveryActive()){
                    BLE::Instance().waitForEvent();
    }               
}