Thread UART

Dependencies:   fsl_phy_mcr20a fsl_smac mbed-rtos mbed

Fork of mcr20_wireless_uart by samuel belete

main.cpp

Committer:
phy_sam
Date:
2016-08-18
Revision:
29:104ca2835945
Parent:
27:1eb29717bfd9

File content as of revision 29:104ca2835945:

#include "mbed.h"
#include "rtos.h"

#include "Phy.h"
#include "SMAC_Interface.h"
#include "SMAC_Config.h"
#include "MemManager.h"
#include "circular_buffer.h"

char * const cu8FreescaleLogo[]={  
  "\f\r\n",
  "\n\r\n\r\n\r      #\n",
  "\r     ###\n",
  "\r    ###  *\n",
  "\r     #  ***\n",
  "\r       ***  #\n",
  "\r        *  ###\n",
  "\r          ###\n",
  "\r        *  #\n",
  "\r       ***\n",
  "\r      ***  #\n",
  "\r    #  *  ###\n",
  "\r   ###   ###\n",
  "\r  ###  *  #         F R E E S C A L E\n",
  "\r   #  ***\n",
  "\r     ***            S E M I C O N D U C T O R\n",
  "\r   #  *\n",
  "\r  ###               2 0 1 5\n",
  "\r ###\n",
  "\r  #           Wireless Uart Demo\r\n\n",
  NULL
};

char * const IUPUI_Logo[]={ "  n\n\n",
   " \r   ",
    "\r ",
    "\r ELECTRICAL AND COMPUTER ENGINEERING",
    "\r\r IUPUI",
    "\r\r  ",
    
    "\n",
    NULL
                                        };
#define gMcps_Cnf_EVENT_c        (1<<1)
#define gMcps_Ind_EVENT_c        (1<<2)
#define gMlme_EdCnf_EVENT_c      (1<<3)
#define gMlme_CcaCnf_EVENT_c     (1<<4)
#define gMlme_TimeoutInd_EVENT_c (1<<5)
#define gWUSelf_EVENT_c          (1<<6)

#define gDefaultBaudRate_UART_c 115200UL

Serial uart(USBTX, USBRX);
CircularBuffer uartBuf;

#ifdef VERBOSE
static bool_t bCCAFailed;
static bool_t bACKFailed;
#endif
uint32_t gTaskEventFlags;
static uint8_t gau8TxDataBuffer[gMaxSmacSDULength_c  + sizeof(rxPacket_t)];  
txPacket_t *gAppTxPacket;
rxPacket_t *gAppRxPacket;
static txContextConfig_t txConfigContext;


void PrintMenu(char * const pu8Menu[])
{
  uint8_t u8Index = 0;
  while(pu8Menu[u8Index]){
    uart.printf(pu8Menu[u8Index]);
    u8Index++;
  }
}


void InitProject(void);
void InitApp(void);

extern smacErrors_t smacToAppMlmeSap(smacToAppMlmeMessage_t* pMsg, instanceId_t instance);
extern smacErrors_t smacToAppMcpsSap(smacToAppDataMessage_t* pMsg, instanceId_t instance);

DigitalOut led1(LED_GREEN);
InterruptIn sw2(SW2);
uint32_t button_pressed;
Thread *thread2;
Thread *eventsThread;

void uartSetBaudRate(uint32_t b)
{
    uart.baud(b);
}

void sw2_press(void)
{
    thread2->signal_set(0x1);
}

void led_thread(void const *argument)
{
    while (true) {
        led1 = !led1;
        Thread::wait(200);
    }
}

void button_thread(void const *argument)
{
    while (true) {
        Thread::signal_wait(0x1);
        button_pressed++;
    }
}

void events_thread(void const *argument)
{
    uint8_t rcvd = 0, c = 0; 

    while (true)
    {
        Thread::signal_wait(0x1);
        if(gMcps_Cnf_EVENT_c == (gTaskEventFlags & gMcps_Cnf_EVENT_c))
        {
            //get back in RX
            MLMERXEnableRequest(gAppRxPacket, 0); 
            //uart.printf("McpsDataCnf: Packet sent\r\n");

        }
        
        if(gMcps_Ind_EVENT_c == (gTaskEventFlags & gMcps_Ind_EVENT_c))
        {
            rcvd = gAppRxPacket->smacPdu.smacPdu[0];

            //get back in RX
            //gAppRxPacket = (rxPacket_t*)MEM_BufferAlloc(gMaxSmacSDULength_c + sizeof(rxPacket_t));
            //gAppRxPacket->u8MaxDataLength = gMaxSmacSDULength_c;
            uart.printf("%c", rcvd);
            MLMERXEnableRequest(gAppRxPacket, 0);

            
        }
        
        if(gMlme_TimeoutInd_EVENT_c == (gTaskEventFlags & gMlme_TimeoutInd_EVENT_c))
        {
            uart.printf("MlmeTimeoutInd: \r\n");
        }
        
        if(gMlme_EdCnf_EVENT_c == (gTaskEventFlags & gMlme_EdCnf_EVENT_c))
        {
            uart.printf("EdCnf: \r\n");
        }
        
        if(gMlme_CcaCnf_EVENT_c == (gTaskEventFlags & gMlme_CcaCnf_EVENT_c))
        {
            uart.printf("CcaCnf: \r\n");
        }
        
        if(gWUSelf_EVENT_c == (gTaskEventFlags & gWUSelf_EVENT_c))
        {
            if (buffer_Ok_c == uartBuf.getFromBuffer(&c))
            {
                gAppTxPacket->smacPdu.smacPdu[0] = c;
                gAppTxPacket->u8DataLength = 1;
                (void)MLMERXDisableRequest();
                (void)MCPSDataRequest(gAppTxPacket);
            }
        }
       
        gTaskEventFlags = 0;
    }
}

int main()
{
    MEM_Init();
    Thread thread(led_thread);
    thread2 = new Thread(button_thread);
    eventsThread = new Thread(events_thread);
    Phy_Init();
    InitSmac();
    
    uartSetBaudRate(gDefaultBaudRate_UART_c);
    
    //Tell SMAC who to call when it needs to pass a message to the application thread.
    Smac_RegisterSapHandlers((SMAC_APP_MCPS_SapHandler_t)smacToAppMcpsSap,(SMAC_APP_MLME_SapHandler_t)smacToAppMlmeSap,0);

    InitApp();
    
    PrintMenu(cu8FreescaleLogo);
    PrintMenu(IUPUI_Logo);
	    
    button_pressed = 0;
    sw2.fall(&sw2_press);
    while (true) 
    {
        if(uart.readable())
        { 
            (void)uartBuf.addToBuffer(uart.getc());
        }
        if ( uartBuf.getCount() )
        {
            gTaskEventFlags |= gWUSelf_EVENT_c;
            eventsThread->signal_set(0x1);
        }   
        Thread::yield();
    }
}

void InitApp()
{
  gAppTxPacket = (txPacket_t*)gau8TxDataBuffer;   //Map TX packet to buffer
  gAppRxPacket = (rxPacket_t*)MEM_BufferAlloc(gMaxSmacSDULength_c + sizeof(rxPacket_t));
  
  InitProject();
  
  SMACFillHeader(&(gAppTxPacket->smacHeader), gDefaultAddress_c);                  
  
  (void)MLMEPAOutputAdjust(gDefaultOutputPower_c);
  (void)MLMESetChannelRequest(gDefaultChannelNumber_c);         
  (void)MLMEConfigureTxContext(&txConfigContext);
  //AppDelayTmr = TMR_AllocateTimer();
  gAppRxPacket->u8MaxDataLength = gMaxSmacSDULength_c;
  (void)MLMERXEnableRequest(gAppRxPacket, 0);
}

/* (Management) Sap handler for managing timeout indication and ED confirm
   This is running in INTERRUPT context, so need to send messages to one of the task */
smacErrors_t smacToAppMlmeSap(smacToAppMlmeMessage_t* pMsg, instanceId_t instance)
{
  switch(pMsg->msgType)
  {
    case gMlmeEdCnf_c:
        gTaskEventFlags |= gMlme_EdCnf_EVENT_c;
        break;
    case gMlmeCcaCnf_c:
        gTaskEventFlags |= gMlme_CcaCnf_EVENT_c;
        break;
    case gMlmeTimeoutInd_c:
        gTaskEventFlags |= gMlme_TimeoutInd_EVENT_c;
        break;
    default:
        break;
  }
  eventsThread->signal_set(0x1);
  MEM_BufferFree(pMsg);
  return gErrorNoError_c;
}

/* (Data) Sap handler for managing data confirm and data indication
   This is running in INTERRUPT context, so need to send messages to one of the task */
smacErrors_t smacToAppMcpsSap(smacToAppDataMessage_t* pMsg, instanceId_t instance)
{  
    switch(pMsg->msgType)
    {
        case gMcpsDataInd_c:
            if(pMsg->msgData.dataInd.pRxPacket->rxStatus == rxSuccessStatus_c)
            {       
                gTaskEventFlags |= gMcps_Ind_EVENT_c;
            }
            break;

        case gMcpsDataCnf_c:
#ifdef VERBOSE
            if(pMsg->msgData.dataCnf.status == gErrorChannelBusy_c)
            {
                bCCAFailed = TRUE;
            }

            if(pMsg->msgData.dataCnf.status == gErrorNoAck_c)
            {
                bACKFailed = TRUE;
            }
#endif

            gTaskEventFlags |= gMcps_Cnf_EVENT_c;
            break;

        default:
            break;
    }
    eventsThread->signal_set(0x1);
    MEM_BufferFree(pMsg);

    return gErrorNoError_c;
}

void InitProject(void)
{   
  /*Global Data init*/
#ifdef VERBOSE
  bACKFailed                        = FALSE;
  bCCAFailed                        = FALSE;
#endif

  gTaskEventFlags = 0;

  txConfigContext.autoAck           = FALSE;
  txConfigContext.ccaBeforeTx       = FALSE;
  txConfigContext.retryCountAckFail = 0;
  txConfigContext.retryCountCCAFail = 0;
}