Diff: Hexi_KW40Z.cpp

Revision:

0:c2d52562f36b

Child:

1:f6f9b24aea57

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Hexi_KW40Z.cpp	Mon Sep 19 02:46:28 2016 +0000
@@ -0,0 +1,395 @@
+/** BLE KW40Z Driver for Hexiwear
+ *  This file contains BLE and Touch Buttons driver functionality for Hexiwear
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this list
+ * of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice, this
+ * list of conditions and the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ *
+ * Neither the name of NXP, nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * visit: http://www.mikroe.com and http://www.nxp.com
+ *
+ * get support at: http://www.mikroe.com/forum and https://community.nxp.com
+ *
+ * Project HEXIWEAR, 2015
+ */
+ 
+#include "Hexi_KW40Z.h"
+
+#if defined (LIB_DEBUG) 
+RawSerial pc(USBTX, USBRX); // tx, rx
+#endif
+ 
+KW40Z::KW40Z(PinName txPin,PinName rxPin) : device(txPin, rxPin), mainThread(&KW40Z::mainStarter, this, osPriorityNormal,1024), rxThread(&KW40Z::rxStarter, this, osPriorityNormal,1024)
+{
+#if defined (LIB_DEBUG) 
+    pc.baud(115200);
+    pc.printf("Initializing\r\n");
+#endif
+
+    device.baud(230400);
+    device.format(8, Serial::None, 2);
+    
+    rxBuff = (uint8_t*)&hostInterface_rxPacket;
+    kw40z_Cbs = NULL;
+    //memset(&hexiwear_kw40version,0,sizeof(hexiwear_version_t));
+    
+    /* intialization finalized, signal to start the threads */
+    mainThread.signal_set(START_THREAD);
+    rxThread.signal_set(START_THREAD);
+}
+
+KW40Z::~KW40Z(void)
+{
+}
+
+void KW40Z::attach(kw40z_callbacks_t * callbacks)
+{
+    kw40z_Cbs = callbacks;
+}
+
+void KW40Z::rxStarter(void const *p) {
+  KW40Z *instance = (KW40Z*)p;
+  instance->rxTask();
+}
+
+void KW40Z::mainStarter(void const *p) {
+  KW40Z *instance = (KW40Z*)p;
+  instance->mainTask();
+}
+
+void KW40Z::GetVersion()
+{
+    hostInterface_packet_t txPacket = {0};
+    
+    txPacket.start1     = gHostInterface_startByte1,
+    txPacket.start2     = gHostInterface_startByte2,
+    txPacket.type       = packetType_buildVersion,
+    txPacket.length     = 3,
+    txPacket.data[0]    = HEXIWEAR_VERSION_MAJOR;
+    txPacket.data[1]    = HEXIWEAR_VERSION_MINOR;
+    txPacket.data[2]    = HEXIWEAR_VERSION_PATCH;
+    txPacket.data[3]    = gHostInterface_trailerByte;
+    
+    SendPacket(&txPacket, false);
+}
+
+void KW40Z::SendPacket(hostInterface_packet_t * txPacket, bool confirmRequested)
+{
+    uint8_t retries = 0;
+    confirmReceived = false;
+    
+    do
+    {
+        char * txBuff = (char *)txPacket;
+        uint8_t length = txPacket->length + gHostInterface_headerSize + 1;
+        
+        if(confirmRequested == true)
+        {
+            txPacket->start2 |= 0x01;
+        }
+        
+        for(uint8_t i = 0; i < length; i++)
+        {
+            device.putc(*txBuff);
+            txBuff++;
+        }
+        
+#if defined (LIB_DEBUG)   
+        DebugPrintTxPacket(txPacket);
+#endif
+
+        retries++;
+        
+        #if defined (gHostInterface_RxConfirmationEnable)
+        if((confirmRequested == true) && (confirmReceived == false))
+        {
+            Thread::wait(gHostInterface_retransmitTimeout);
+        }
+        #endif
+    }
+    while((confirmRequested == true) && 
+          (confirmReceived == false) && 
+          (retries < gHostInterface_retransmitCount));
+}
+
+void KW40Z::mainTask(void)
+{
+    mainThread.signal_wait(START_THREAD);
+
+#if defined (LIB_DEBUG)     
+    pc.printf("MainTask Stared\r\n");
+#endif
+
+    while(1)
+    {
+        osEvent evt = queue.get();
+        if (evt.status == osEventMessage) 
+        {
+            hostInterface_packet_t *rxPacket = (hostInterface_packet_t*)evt.value.p;
+            ProcessReceivedPacket(rxPacket);
+            mpool.free(rxPacket);
+        }
+    }
+}
+
+void KW40Z::rxTask(void)
+{
+    rxThread.signal_wait(START_THREAD);
+
+#if defined (LIB_DEBUG)     
+    pc.printf("RxTask Stared\r\n");
+#endif
+
+    while(1)
+    {
+        if(device.readable()) 
+        {   
+            *rxBuff++ = device.getc();
+            ProcessBuffer();
+            
+            /* check for buffer overflow */
+            if(rxBuff >= ((uint8_t*)&hostInterface_rxPacket + sizeof(hostInterface_rxPacket)))
+            {
+                rxBuff = (uint8_t*)&hostInterface_rxPacket;
+            }
+        }
+    }
+}
+
+#if defined (LIB_DEBUG) 
+void KW40Z::DebugPrintTxPacket(hostInterface_packet_t * txPacket)
+{
+    char * txBuff = (char *)txPacket;
+    uint8_t length = txPacket->length + gHostInterface_headerSize + 1;
+
+    pc.printf("Tx: ");    
+    for(uint8_t i = 0; i < length; i++)
+    {
+        pc.printf("%02X ",*txBuff);
+        txBuff++;
+    }
+    pc.printf("\r\n");
+}
+
+void KW40Z::DebugPrintRxPacket()
+{
+    pc.printf("RX: ");
+    for(uint8_t * i = (uint8_t*)&hostInterface_rxPacket; i<rxBuff; i++)
+    {
+        pc.printf("%02X ",*i);
+    }
+    pc.printf("\r\n");
+}
+#endif
+
+void KW40Z::ProcessBuffer()
+{    
+    /* check if header has been received */
+    if(rxBuff > ((uint8_t*)&hostInterface_rxPacket + gHostInterface_headerSize))
+    {
+        /* check packet header */
+        if((gHostInterface_startByte1 != hostInterface_rxPacket.start1)||
+           (gHostInterface_startByte2 != (hostInterface_rxPacket.start2 & 0xFE))||
+           (hostInterface_rxPacket.length > gHostInterface_dataSize))
+        {
+#if defined (LIB_DEBUG) 
+            DebugPrintRxPacket();
+            pc.printf("check header failed\r\n");
+#endif
+      
+            SearchStartByte();
+        }
+        else
+        {
+            /* check data length */
+            if(rxBuff > ((uint8_t*)&hostInterface_rxPacket + gHostInterface_headerSize + hostInterface_rxPacket.length)) 
+            {
+                /* check trailer byte */
+                if(gHostInterface_trailerByte != hostInterface_rxPacket.data[hostInterface_rxPacket.length])
+                {
+#if defined (LIB_DEBUG) 
+                    DebugPrintRxPacket();
+                    pc.printf("trailer byte failed\r\n");
+#endif
+
+                    SearchStartByte();
+                }
+                else
+                {   
+                
+                    #if defined (gHostInterface_RxConfirmationEnable)
+                    if(hostInterface_rxPacket.type == packetType_OK)
+                    {
+                        confirmReceived = true;
+                    }
+                    #endif
+                    
+                    /* send message to main task */
+                    hostInterface_packet_t *rxPacket = mpool.alloc();
+                    memcpy(rxPacket, &hostInterface_rxPacket, sizeof(hostInterface_packet_t));
+                    queue.put(rxPacket);
+
+#if defined (LIB_DEBUG)                     
+                    DebugPrintRxPacket();
+#endif 
+                    /* reset buffer position */
+                    rxBuff = (uint8_t*)&hostInterface_rxPacket;
+                } 
+            }      
+        }
+    }
+}
+
+void KW40Z::SearchStartByte()
+{
+    bool found = false;
+    uint8_t * rdIdx = (uint8_t*)&hostInterface_rxPacket + 1;
+    
+    while(rdIdx < rxBuff)
+    {
+        if(*rdIdx == gHostInterface_startByte1)
+        {
+            uint32_t len = rxBuff - rdIdx;
+            
+            memcpy(&hostInterface_rxPacket,rdIdx,len);
+            rxBuff -= len;
+            found = true;
+            
+#if defined (LIB_DEBUG) 
+            pc.printf("moving ");
+#endif
+            break;
+        }
+        rdIdx++;
+    }
+    
+    if(!found)
+    {
+        /* reset buffer position */
+        rxBuff = (uint8_t*)&hostInterface_rxPacket;
+    }
+    
+#if defined (LIB_DEBUG) 
+    pc.printf("search done\r\n");
+    DebugPrintRxPacket();
+#endif
+}
+
+void KW40Z::SendPacketOK()
+{
+    hostInterface_packet_t txPacket = {0};
+    
+    txPacket.start1     = gHostInterface_startByte1,
+    txPacket.start2     = gHostInterface_startByte2,
+    txPacket.type       = packetType_OK,
+    txPacket.length     = 0,
+    txPacket.data[0]    = gHostInterface_trailerByte;
+    
+    SendPacket(&txPacket, false);    
+}
+
+void KW40Z::ConfirmPacketOK()
+{
+}
+
+void KW40Z::ProcessReceivedPacket(hostInterface_packet_t * rxPacket)
+{
+#if defined (LIB_DEBUG) 
+    pc.printf("packet found %d\r\n", rxPacket->type);
+#endif
+
+#ifdef gHostInterface_TxConfirmationEnable
+      // acknowledge the packet reception
+      if ( 1 == ( rxPacket->start2 & 0x01 ) )
+      {
+          SendPacketOK();
+      }
+#endif
+    
+    switch(rxPacket->type)
+    {
+        /* button presses */
+        case packetType_pressUp:
+        case packetType_pressDown:
+        case packetType_pressLeft:
+        case packetType_pressRight:
+        case packetType_slide:
+            if((kw40z_Cbs != NULL) && (kw40z_Cbs->buttons != NULL))
+            {
+                kw40z_Cbs->buttons((hexi_buttons_t)(rxPacket->type));
+            }
+            break;
+    
+        /* Alert Service */
+        case packetType_alertIn:
+            if((kw40z_Cbs != NULL) && (kw40z_Cbs->alert != NULL))
+            {
+                kw40z_Cbs->alert(&rxPacket->data[0], rxPacket->length);
+            }
+            break;
+        
+        /* Passkey for pairing received */
+        case packetType_passDisplay:
+            if((kw40z_Cbs != NULL) && (kw40z_Cbs->passkey != NULL))
+            {
+                kw40z_Cbs->passkey(&rxPacket->data[0]);
+            }
+            break;
+            
+        /* OTAP messages */
+        case packetType_otapCompleted:
+        case packetType_otapFailed:
+            break;
+            
+        /* TSI Status */
+        case packetType_buttonsGroupSendActive:
+            break;
+            
+        /* Advertisement Mode Info */
+        case packetType_advModeSend:
+            break;
+        
+        /* Link State */
+        case packetType_linkStateSend:
+            break;
+            
+        /* ANCS Service Notification Received */
+        case packetType_notification:
+            if((kw40z_Cbs != NULL) && (kw40z_Cbs->notifications != NULL))
+            {
+                kw40z_Cbs->notifications(rxPacket->data[0],rxPacket->data[1]);
+            }
+            break;
+            
+        /* Build version */
+        case packetType_buildVersion:
+            break;
+      
+        case packetType_OK:
+            /* do nothing, the flag is set in the RxTask */
+            break;
+    
+        default:
+            break;
+    }
+}