Hello,
I am trying to receive data from a microcontroller. I am having problem. There are some characters like ‘Z’ are inserted into received data. I have attached the code below and I would appreciate if someone could point out what is the mistake I have made. I am using Q24Plus
/***************************************************************************/
/* Section to Handle Data from MCU */
/***************************************************************************/
// Control handler for UART 2
bool FCM_UART2_CtrlHandler(adl_fcmEvent_e Event)
{
s8 resultat;
adl_atSendResponse ( ADL_AT_UNS,"FCM_UART2_CtrlHandler\r\n" );
switch(Event)
{
case ADL_FCM_EVENT_FLOW_OPENNED:
adl_atSendResponse ( ADL_AT_UNS,"ADL_FCM_EVENT_FLOW_OPENNED\r\n");
resultat = adl_fcmSwitchV24State(FCM_UART2_handle, ADL_FCM_V24_STATE_DATA);
break;
case ADL_FCM_EVENT_FLOW_CLOSED:
adl_atSendResponse ( ADL_AT_UNS,"ADL_FCM_EVENT_FLOW_CLOSED\r\n" );
break;
case ADL_FCM_EVENT_V24_DATA_MODE:
adl_atSendResponse ( ADL_AT_UNS,"ADL_FCM_EVENT_V24_DATA_MODE\r\n");
uart2Mode = UART_MODE_DATA;
uart2Status = UART2_READY; // UART2 is now completely initialised
break;
case ADL_FCM_EVENT_V24_DATA_MODE_EXT:
adl_atSendResponse ( ADL_AT_UNS,"ADL_FCM_EVENT_V24_DATA_MODE_EXT\r\n");
break;
case ADL_FCM_EVENT_V24_AT_MODE:
adl_atSendResponse ( ADL_AT_UNS,"ADL_FCM_EVENT_V24_AT_MODE\r\n");
uart2Mode = UART_MODE_AT;
break;
case ADL_FCM_EVENT_V24_AT_MODE_EXT:
adl_atSendResponse ( ADL_AT_UNS,"ADL_FCM_EVENT_V24_AT_MODE_EXT\r\n");
break;
case ADL_FCM_EVENT_RESUME:
adl_atSendResponse ( ADL_AT_UNS,"ADL_FCM_EVENT_RESUME\r\n");
b_canSendDataToUart2 = TRUE;
// sendBufToUart2();
break;
case ADL_FCM_EVENT_MEM_RELEASE:
adl_atSendResponse ( ADL_AT_UNS,"ADL_FCM_EVENT_MEM_RELEASE\r\n");
break;
case ADL_FCM_EVENT_V24_DATA_MODE_FROM_CALL:
adl_atSendResponse ( ADL_AT_UNS,"ADL_FCM_EVENT_V24_DATA_MODE_FROM_CALL\r\n");
break;
case ADL_FCM_EVENT_V24_AT_MODE_FROM_CALL:
adl_atSendResponse ( ADL_AT_UNS,"ADL_FCM_EVENT_V24_AT_MODE_FROM_CALL\r\n");
break;
default:
adl_atSendResponse ( ADL_AT_UNS,"DEFAULT\r\n");
break;
}
return(FALSE);
}
// Data handler for UART 2
bool FCM_UART2_DataHandler(u16 DataSize, u8 * Data)
{
adl_atSendResponse ( ADL_AT_UNS,Data);
return(TRUE);
}
// Subscribe to the UART2 FCM after a short delay
void tmrHandler_startFcmUart2( u8 ID )
{
// Subscribe to the FCM for UART2
FCM_UART2_handle = adl_fcmSubscribe ( ADL_FCM_FLOW_V24_UART2, FCM_UART2_CtrlHandler, FCM_UART2_DataHandler );
adl_atSendResponse ( ADL_AT_UNS, "adl_fcmSubscribe UART2 return value: ");
adl_atSendResponse ( ADL_AT_UNS, FCM_UART2_handle );
adl_atSendResponse ( ADL_AT_UNS, "\r\n");
if(FCM_UART2_handle < 0)
adl_atSendResponse ( ADL_AT_UNS,"adl_fcmSubscribe UART2 failed\r\n" );
}
//----------------------------------------------------------------------------------------
// Check that OK is received after setting UART2 default speed
// If OK, wait, then subscribe to the FCM for UART2
//----------------------------------------------------------------------------------------
bool cmd_RspHandler_IPR(adl_atResponse_t * params)
{
ascii buf[30];
adl_atSendResponse ( ADL_AT_UNS, "cmd_RspHandler_IPR\r\n");
wm_strRemoveCRLF(buf, params->StrData, params->StrLength);
if ((!wm_strcmp(buf, "OK")) && (uart2Status == UART2_CHANGING_SPEED))
{
uart2Status = UART2_OPENING_FCM;
// Must wait before subscribing to the FCM for UART 2,
// otherwise the UART2 parameters are not set correctly
// and the UART2 is not synchronised to the incomming data.
adl_tmrSubscribe ( FALSE, 1, ADL_TMR_TYPE_100MS, tmrHandler_startFcmUart2 );
}
return FALSE;
}
//----------------------------------------------------------------------------------------
// Response handler after requesting/modifying UART2 status.
// If UART2 is closed then open it. Once open, then change speed.
// If it is already open, then leave it open and change speed.
//----------------------------------------------------------------------------------------
bool cmd_RspHandler_WMFM(adl_atResponse_t * params)
{
ascii buf[30];
wm_strRemoveCRLF(buf, params->StrData, params->StrLength);
switch(uart2Status)
{
case UART2_GETTING_STATUS:
if(buf[13] == '0') // "+WMFM: 0,2,x,0" ==> Closed
{
uart2Status = UART2_CLOSED_WAITING_OK;
}
else if(buf[13] == '1') // "+WMFM: 0,2,x,1" ==> Open
{
uart2Status = UART2_OPEN_WAITING_OK;
}
break;
case UART2_CLOSED_WAITING_OK:
if(!wm_strcmp(buf, "OK"))
{
uart2Status = UART2_OPENING_WAITING_OK;
// By default, only UART 1 is open. UART 2 must be explicitly opened
adl_atCmdCreate( "AT+WMFM=0,1,2", FALSE, ( adl_atRspHandler_t ) cmd_RspHandler_WMFM, "*", NULL );
}
break;
case UART2_OPEN_WAITING_OK:
if(!wm_strcmp(buf, "OK"))
{
uart2Status = UART2_CHANGING_SPEED;
// Set default speed for UART 2
adl_atCmdCreate("AT+IPR=4800", ADL_AT_PORT_TYPE( ADL_AT_UART2, FALSE ), (adl_atRspHandler_t) cmd_RspHandler_IPR, "*", NULL);
}
break;
case UART2_OPENING_WAITING_OK:
if(!wm_strcmp(buf, "OK"))
{
uart2Status = UART2_GETTING_STATUS;
// startUart2(); // get status of UART2 again. Should be open now
}
break;
}
return FALSE;
}
void startUart2(void)
{
// Get UART2 status first.
// If we try to open it when all ready open, then an error is returned.
// Similarly, if we try to close it when all ready closed, then an error is returned.
// So check status first and then act accordingly.
adl_atSendResponse ( ADL_AT_UNS, "startUart2: get status UART2\r\n" );
uart2Status = UART2_GETTING_STATUS;
adl_atCmdCreate( "AT+WMFM=0,2,2", FALSE, ( adl_atRspHandler_t ) cmd_RspHandler_WMFM, "*", NULL );
}Thanks
Green
