Hello,
The following code was embedded in main function, the sdk version is 15.2.
NRF_LOG_INFO("test begin: ");
char string[] = "This is a string.";
NRF_LOG_INFO(string);
NRF_LOG_INFO("This is a string, too.");
NRF_LOG_INFO("test end ");
the debug console show as below:
My question is , why string "This is a string" can't print out?
Thank you!
The reason is because NRF_LOG_XXX uses many macro definitions that assumes that the args of the NRF_LOG are similar to printf. It uses __VA_ARGS__ and hence what you are trying to do does not make sense to the macro expansion of the NRF_LOG_INFO.
To achieve what you want you should use a format indicator as below.
NRF_LOG_INFO("test begin: ");
static char string[] = "This is a string.";
NRF_LOG_INFO("%s", string);
NRF_LOG_INFO("This is a string, too.");
NRF_LOG_INFO("test end");
You will get what you need then
The reason is because NRF_LOG_XXX uses many macro definitions that assumes that the args of the NRF_LOG are similar to printf. It uses __VA_ARGS__ and hence what you are trying to do does not make sense to the macro expansion of the NRF_LOG_INFO.
To achieve what you want you should use a format indicator as below.
NRF_LOG_INFO("test begin: ");
static char string[] = "This is a string.";
NRF_LOG_INFO("%s", string);
NRF_LOG_INFO("This is a string, too.");
NRF_LOG_INFO("test end");
You will get what you need then