How to declare a string

[Rick Z]

I have a list of characters and trying to put them in a string.

char line[13]; /* Line buffer */

NRF_LOG_INFO("Playlist : %c", line[0]); this works displaying 1 character at a time

NRF_LOG_INFO("Playlist : %s", line); does not work displaying the 13 character as a string

What I am needing to do is create an array that has about 1000 x string(char(13)) and be able to read it back.

none of the string functions work I assume these are more c++

Thanks

[Simon]

NRF_LOG_INFO("Playlist : %s", line); does not work displaying the 13 character as a string

 If you use the placeholder %s, it will log all the bytes from the given address until it hits a NULL character. E.g the following (the characters are written as ASCII, convert it using http://www.asciitable.com/):

char line[4]= {0x48, 0x45, 0x59, NULL}; /* Line buffer */
NRF_LOG_INFO("%s", line);

Will print:

<info> app: HEY

If you have a NULL character in the middle of the string, it will only print the characters up to that point.

Best regards,

Simon

[Rick Z]

Unfortunately it does not print this but instead a garbage character is printed

[Rick Z]

Same as example i provided above which is essentially the same thing in your example

[Simon]

Can you provide your whole code? Or at least the source (.c) file where you assign values to line[].

[Rick Z]

The result back in log is as follow

<info> app: Playing PLAYLIST
<info> app: test 1
<info> app: I2S loopback example started.

next to test 1 is a weird character

    char line[4]= {0x48, 0x45, 0x59, NULL}; /* Line buffer */
    NRF_LOG_INFO("test 1 %s", line);

[Simon]

That is strange. Could you try to do the same in a really simple example, E.g. add those lines to examples\peripheral\temperature and check if the result is similar. If it still doesn't work, could you try to build the example using another compiler/IDE. E.g. try opening \examples\peripheral\temperature\pca10056\blank\armgcc and run these commands:

• make
• make flash

Open Termite and check the result.