MSP430FR5969: UART Data get Corrupt

Hi Anil,

MSP430FR5969 doesn't support RS232, need level shift. Please use oscilloscope to monitor the signal in UART TXD/RXD. 

Hi Winter,

in hardware level i used MAX3232E this IC to shift the levels. so i don't thinks so there is a problem to use this.

and one more point is that i am getting result always but rarely i am getting data corruption.

for ex: out of 6000 iteration of read data i am getting 40 error data which is data corruption 

*g;1;04:17:75:FA:6D:4D:81;0000051300C;d63286c17ve3a309ade26c58a9bad23540ef1d7db244db37f8afc48dec0bf9f0;03-29-2019;0003000;0001361;<NUL><NUL><NUL><NUL>;35#

*g;1;04:17:75:FA:6D:4D:81;0000051300C;d63286c172e3a309ade26c58a9bad23540ef1d7db244db37f8afc48dec0bf9f0;03-29-2019;0003000;0001361;<NUL><NUL><NUL><NUL>;79# 

see this one.

like wise only single character i am getting corrupted.

what i need to do?

Thanks,

Anil.

Hi Winter,

this settings i used.

My MCLK = 16MHz

SMCLK = 8MHz

ACLK = 10KHz

Baud Rate = 9600 

so i think so this settings are correct.

Thanks,

Anil.

Please use oscilloscope to monitor the signal to see if noise or disturbance on the RXD line.

yes i will check with DSO on RX pin.

But in configuration above i am seeing one error value i kept.

can yo u look that. -  UCA1MCTLW =  0x4911;  //0xBF;   here we need to configure the 0x4911 instead of 0xBF, am i right?

because 8000000/9600 = 833.333... so for 0.33 there is a 0x49 value is there, see in the image itself.

and later that 0x4911 came, so that 11 is for 

 so i will keep there 0x4911, is that all configuration correct? or other things also i need to check here or initialize?

Can you please check from your side?

Thanks,

Anil.

Hi Winter,

I connected FET to board and testing the software with above mentioned changes, then i am not getting any error. but as soon as i removed the FET from the board then it start getting corrupted data. 

so can i say its power issue or ground issue?

Because at another place with only PC i checked the same thing then i am not getting any error there. so i am saying this.

Anil.

Hi Winter,

I connected the External power to the NFC board and connected FET also. then i am getting correct results.

So it may be the cause of power or ground issue. 

And i changed the BRCLK value also. but after this change also with another Board power i am getting corrupted data.

So for  now i have a doubt on ground or power so i will check first those things then i will post anything comes new.

Thanks for your support.

Anil.