Compiler/LAUNCHXL-CC1350: Sending 2 sets of information over UART

Timothy Zhang

Part Number: LAUNCHXL-CC1350

Tool/software: TI C/C++ Compiler

Hi,

is it possible to UART_write 2 different information? i am now unable to display two sets of information through UART with the code below

char buff[10]; // take a chance that 10 is always enough
sprintf(buff,"%d ",RSSIout);
UART_write(uart, buff, strlen(buff));
UART_write(uart, &Rxpacket, sizeof(rxpacket);

the display only shows

char buff[10]; // take a chance that 10 is always enough
sprintf(buff,"%d ",RSSIout);
UART_write(uart, buff, strlen(buff));

is it possible to display both of this information in the same line?

over 6 years ago

0 YiKai Chen over 6 years ago

Guru 735685 points

I suppose you can use sprintf to format both information together and output buffer with UART_write.

0 Timothy Zhang over 6 years ago in reply to YiKai Chen

Prodigy 210 points

sorry i am really new to C coding, would you mind explaining?

0 YiKai Chen over 6 years ago in reply to Timothy Zhang

Guru 735685 points

I suppose it would be like “sprintf(buff,"%d %x %x %x",RSSIout, Rxpacket[0], Rxpacket[1], Rxpacket[2]);” if Rxpacket contains 3 bytes data.

0 Keith Barkley over 6 years ago in reply to Timothy Zhang

Guru 42095 points

There should be no problem using 2 UART_Write()'s next to each other, it should just block if the buffer fills up.

I suggest that you send a string of "Hello, worlds!" to convince yourself of that:

UART_Write("Hello, World!\n\r", sizeof("Hello, World!\n\r"));
UART_Write("Hello, World!\n\r", sizeof("Hello, World!\n\r"));
UART_Write("Hello, World!\n\r", sizeof("Hello, World!\n\r"));
UART_Write("Hello, World!\n\r", sizeof("Hello, World!\n\r"));

Note, that if you are sending binary data, like RXPacket, a terminal might interpret the bytes as control characters and do funny things. Especially if you send '\n', '\r', '\f' and '\a'

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Compiler/LAUNCHXL-CC1350: Sending 2 sets of information over UART