Hi,
I need to send a bunch of Null character to the external device through UART2. I tried using adl_fcmsend function but it failed.
Kindly provide help on the same.
Hi,
I need to send a bunch of Null character to the external device through UART2. I tried using adl_fcmsend function but it failed.
Kindly provide help on the same.
That’s like saying, “My car’s not working - what’s wrong with it?”
What, exactly, did you try?
How, exactly, did it fail?
Hi,
I tried to send the following characters ‘0x55’, ‘0xAA’, ‘0x02’, ‘0x01’, ‘0x00’, ‘0x00’, ‘0x02’ and ‘0x01’ using the following code snippet.
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x55,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0xAA,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x02,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x01,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x00,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x00,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x02,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x01,1);
I checked the return value of adl_fcmSendData, when writing adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x00,1); it is returning error code as -2 (one of the parameter has incorrect value).
So look at the parameter values that you’ve supplied, and ask yourself which one(s) are wrong…
Hint: It’s a basic ‘C’ mistake - nothing specifically to do with Open-AT…
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x55,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0xAA,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x02,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x01,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x00,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x00,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x02,1);
adl_fcmSendData(Gps_Fcm_Handle,(u8*)0x01,1);
try something like this:
u8 msg[8];
msg[0] = 0x55;
msg[1] = 0xAA;
..
..
adl_fcmSendData(Gps_Fcm_Handle,(u8*)msg,8);
the code can contain errors, only for conceptual understanding.
Hi,
I need to send the following hex values (0x55,0xAA,0x02,0x01,0x00,0x00,0x02,0x01) through UART2. How to send these characters. Kindly help me.
Thanks I got it working.
You saw the mistake in your original code, then?
You understand now that you mustn’t just go casting an arbitrary byte value to a pointer?
In particular, you mustn’t just go casting any zero value to a pointer!
Again, this is standard ‘C’ stuff - nothing specifically to do with Open-AT.
You may post your solution to help others.