Please can you help me im using a Q2686 wireless CPU. I want to interface it with a PIC micro. My question is how should I setup the micro for serial link? I have setup FCM and it is ok but when I check on the header files I found the adl_port.h file for setting up an external device but i dnt understand how to do this.
Setting up an external device
awneil
#2
As far as the PIC is concerned, it’s just a standard serial interface - it neither knows nor cares whether it’s connected to a terminal, or a PC, or a modem, or anything else.
The PIC just transmits bytes from its serial port output, and receives bytes at its serial port input; it is totally irrelevant where the transmitted bytes go to, or where the received bytes come from - they are all just bytes!
Similarly for the Q26.
For previous discussions, try putting “PIC” into the forum’s 'Search" box…
youngmoney
#3
Thanks for the reply. Yes I do get what you are saying but then what are those header files used for? (adl_port.h and adl_OpenDevice.h). The thing is that I’m quite new in this stuff so I just want to understand properly. The way I understood was like you are saying that they are supposed to just communicate because they don’t really care what the other device is doing, that was until I saw these two header files then I started having questions but when I do some research I’m not getting the answers I’m looking for that’s why I have come here now to be clear about this thing.
Thanks.
awneil
#4
The ADL User Guide tells you which header file(s) is/are required for each ADL “service” (such as FCM)
adl_global.h includes all ADL headers.
youngmoney
#5
I did check the ADL user guide and it says I only need adl_fcm.h.So what u trying to say is that I don’t need to setup the port because I am using fcm? This is my code here below please take a look at it and tell me what you think about it. As I had said im trying to receive data from the PIC micro and storing it into flash memory. It seems to me from what u saying that the first part in my main function is necessary.
#include "adl_global.h"
#include "wm_uart.h"
/***************************************************************************/
/* Mandatory variables */
/*-------------------------------------------------------------------------*/
/* wm_apmCustomStackSize */
/*-------------------------------------------------------------------------*/
/***************************************************************************/
const u16 wm_apmCustomStackSize = 1024*3;
/***************************************************************************/
/* Local variables */
/***************************************************************************/
u8 fcmHandle;
u8 fcm_Handle_Closed;
ascii*flhHandle;
s8 retValue;
s8 bufIn;
s8 bufOut;
//adl_tmr_t *timer_ptr;
adl_tmr_t *getStatus_timer;
u16 timeout_period = 10;
u8 count = 0;
u16 flhId = 0;
u16 objLen;
u8 data;
bool status;
static psGItfCont_t uart_if;
static u32 uart1_hdl;
/***************************************************************************/
/* Local functions */
/***************************************************************************/
bool fcmCtrlH (adl_fcmEvent_e event );
bool fcmDataH ( u16 DataLen, u8 * buffer);
void getStatus_tmrHandler(u8 Id);
/***************************************************************************/
/* Function : adl_main */
/*-------------------------------------------------------------------------*/
/* Object : Customer application initialisation */
/* */
/*-------------------------------------------------------------------------*/
/* Variable Name |IN |OUT|GLB| Utilisation */
/*--------------------+---+---+---+----------------------------------------*/
/* InitType | | | | Application start mode reason */
/*--------------------+---+---+---+----------------------------------------*/
/***************************************************************************/
void adl_main ( adl_InitType_e InitType )
{
TRACE (( 1, "Embedded Application : Main" ));
//Setup the port
sUartSettings_t settings;
sUartLc_t line_coding;
// Set the line coding parameters
line_coding.valid_fields = UART_LC_ALL;
line_coding.rate = (eUartRate_t)( UART_RATE_USER_DEF | 9600 );
line_coding.stop = UART_STOP_BIT_1;
line_coding.data = UART_DATALENGTH_8;
line_coding.parity = UART_PARITY_NONE;
// UART2 will be opened in NULL MODEM role / with synchronous read/write
settings.identity = "UART1";
settings.role = UART_ROLE_NM;
settings.capabilities = NULL;
settings.event_handlers = NULL;
settings.interface = &uart_if;
settings.line_coding = &line_coding;
uart1_hdl = adl_odOpen( DF_UART_CLID, &settings );
if( !uart1_hdl )
{
// UART2 opening failed...
return;
}
// UART2 successfully opened, write some bytes
//uart1_if.write( uart1_hdl, “Tx Some bytes”, 13 );
//Subscribe to Flash
adl_flhSubscribe(flhHandle, 1);
//Subscribe to FCM flow
fcmHandle=adl_fcmSubscribe(ADL_FCM_FLOW_V24_UART1 ,fcmCtrlH, fcmDataH);
TRACE (( 1, "FCM subscription handle-->%d",fcmHandle ));
}
/***************************************************************************/
/* Command Handlers */
/***************************************************************************/
bool fcmCtrlH (adl_fcmEvent_e event )
{
switch(event)
{
case ADL_FCM_EVENT_FLOW_OPENNED:
adl_atSendResponse(ADL_AT_UNS, "FCM Flow Opened\r\n");
adl_flhWrite(flhHandle, flhId, objLen, &data);
adl_fcmSwitchV24State(fcmHandle,ADL_FCM_V24_STATE_DATA);
break;
case ADL_FCM_EVENT_V24_DATA_MODE:
adl_atSendResponse(ADL_AT_UNS, "Flow in Data Mode\r\n");
/*Use a cyclic timer to poll in the buffer status to switching the V24 state from Data to AT*/
getStatus_timer = adl_tmrSubscribe(TRUE, 1, ADL_TMR_TYPE_100MS, getStatus_tmrHandler);
/*Reading data from flash*/
adl_flhRead(flhHandle, flhId, objLen, &data);
adl_atSendResponse(ADL_AT_UNS, "I just read some data from flash\r\n");
adl_fcmSwitchV24State(fcmHandle,ADL_FCM_V24_STATE_AT);
break;
case ADL_FCM_EVENT_FLOW_CLOSED:
adl_atSendResponse(ADL_AT_UNS, "Flow Closed\r\n");
break;
case ADL_FCM_EVENT_V24_AT_MODE:
adl_atSendResponse(ADL_AT_UNS, "Flow in AT Mode\r\n");
adl_fcmReleaseCredits( fcmHandle, 0XFF );
adl_fcmUnsubscribe(fcmHandle);
adl_tmrUnSubscribe(getStatus_timer, getStatus_tmrHandler, ADL_TMR_TYPE_100MS);
break;
case ADL_FCM_EVENT_V24_AT_MODE_EXT:
adl_atSendResponse(ADL_AT_UNS, "Flow in AT Mode\r\n");
adl_fcmReleaseCredits( fcmHandle, 0XFF );
break;
case ADL_FCM_EVENT_RESUME:
adl_atSendResponse(ADL_AT_UNS, "Resume data\r\n");
break;
case ADL_FCM_EVENT_MEM_RELEASE:
adl_atSendResponse(ADL_AT_UNS, "Data released\r\n");
break;
case ADL_FCM_EVENT_V24_AT_MODE_FROM_CALL:
adl_atSendResponse(ADL_AT_UNS, "Calling for AT\r\n");
break;
case ADL_FCM_EVENT_V24_DATA_MODE_FROM_CALL:
adl_atSendResponse(ADL_AT_UNS, "Calling Data Mode\r\n");
break;
case ADL_FCM_EVENT_V24_DATA_MODE_EXT:
adl_atSendResponse(ADL_AT_UNS, "Flow in Data Mode\r\n");
break;
}
return TRUE;
}
bool fcmDataH ( u16 datalen, u8 * databuf)
{
TRACE((1,"Data handler = %d", datalen ));
return TRUE;
}
void getStatus_tmrHandler(u8 Id)
{
if ((adl_fcmGetStatus(fcmHandle, ADL_FCM_WAY_TO_EMBEDDED) == ADL_FCM_RET_BUFFER_EMPTY))
{
//adl_tmrUnSubscribe(getStatus_timer, getStatus_tmrHandler, ADL_TMR_TYPE_100MS);
//Switching V24 state from Data to AT
adl_fcmSwitchV24State(fcmHandle, ADL_FCM_V24_STATE_AT);
}
else
{
adl_atSendResponse(ADL_AT_UNS, "Buffer is not empty,fetching data...\r\n");
status = adl_memRelease(objLen);
if (status == TRUE)
{
adl_flhWrite(flhHandle, flhId, objLen, &data);
flhId = flhId +1;
adl_atSendResponse(ADL_AT_UNS, "Data successfully stored in flash\r\n");
}
else
{
adl_atSendResponse(ADL_AT_UNS, "Data could not be released\r\n");
}
}
}
awneil
#6
ADL provides two distinct ways to use the UARTs: you use either FCM or Direct access - but not both!
I recommend that you use FCM.
awneil
#7
Clarification: for each UART, you can use either FCM or Direct access, but an application can use FCM for one UART, and Direct Access for another.
Again, I recommend that you use FCM.
youngmoney
#10
I though I only need to check the return values of the values that I need to know for doing a particular action. I don’t understand why I have to check return values I don’t need.
awneil
#11
Because you do need them!
They tell you whether the operation succeeded or not - you obviously need to know that the operation succeeded before you carry on and rely upon it!
If the operation failed, it gives you some indication for the reason - so that you know what to fix.
This is basic stuff for any programming exercise - not specific to Wavecom or Open-AT.
In any programming job, dealing with the path where everything “just works” is almost trivial - it’s coping with all the things that could go wrong that takes 90% of the effort!