I prefer all printf() calls to include a prefix timestamp, so
printf("something happened");
gives output
00:01:30.555 something happened
in other words, the printf happened 1minute,30 seconds 555 milliseconds into the current debug session.
Typically I override printf() itself, and then redirect to the proper call.
I've gotten this to work when using a serial port UART (DEBUGCONSOLE_DISABLE), but I need it to print timestamps in Semihost Console mode DEBUGCONSOLE_REDIRECT_TO_TOOLCHAIN
I can't seem to find out how to create a hook into your SDK to override printf().
Hopefully, someone has done this before for Semihost Console mode.
Here's a portion of my changes to dbg_console_printf.h. Also, see my attached
/*! @brief Definition to select redirect toolchain printf, scanf to uart or not.
*
* if SDK_DEBUGCONSOLE defined to 0,it represents select toolchain printf, scanf.
* if SDK_DEBUGCONSOLE defined to 1,it represents select SDK version printf, scanf.
* if SDK_DEBUGCONSOLE defined to 2,it represents disable debugconsole function.
*/
#if SDK_DEBUGCONSOLE == DEBUGCONSOLE_DISABLE /* Disable debug console */
static inline int DbgConsole_Disabled(void)
{
return -1;
}
#define PRINTF(...) DbgConsole_Disabled()
#define SCANF(...) DbgConsole_Disabled()
#define PUTCHAR(...) DbgConsole_Disabled()
#define GETCHAR() DbgConsole_Disabled()
#elif SDK_DEBUGCONSOLE == DEBUGCONSOLE_REDIRECT_TO_SDK /* Select printf, scanf, putchar, getchar of SDK version. */
extern void DbgPrintTimestamp_Baremetal();
extern int gCrashLogTimestampLength;
#define PRINTF(fmt, ...) do { \
gCrashLogTimestampLength = 0; \
DbgPrintTimestamp_Baremetal(); \
DbgConsole_Printf(fmt, ##__VA_ARGS__); \
} while(0)
#define SCANF DbgConsole_Scanf
#define PUTCHAR DbgConsole_Putchar
#define GETCHAR DbgConsole_Getchar
#elif SDK_DEBUGCONSOLE == DEBUGCONSOLE_REDIRECT_TO_TOOLCHAIN /* Select printf, scanf, putchar, getchar of toolchain. \ \
*/
#define PRINTF printf
#define SCANF scanf
#define PUTCHAR putchar
#define GETCHAR getchar
#endif /* SDK_DEBUGCONSOLE */
