Logging¶

There is no clean logging concept at the moment.

• Work within ISRs.
• Only short messages, e.g. 20 chars.
• Heart-beat LED might be involved
• CAN might be involved to transmit diagnose
• Debug can be disabled even for Debug-builds; BIWAK_LOG_DEBUG has to be defined to show bDebug

Heartbeat-Class¶

An LED can indicate problems.

• good (double)
• crytical error (fast blink)
• fatal error (slow blink)
• temporary error/ trouble (fast blink - off 1Hz) (goes away)

Usecases¶

• invalid eeprom causes "critical"-state
• Not being able to sen CAN messages causes "trouble"
• fatal: the application can not run for some reason but the led should work; e.g. a reception buffer is full
• exception: Don't even try to run any more. e.g. memory error.

Examples¶

add_definitions( BIWAK_LOG_HEARTBEAT )
add_definitions( BIWAK_LOG_CAN )
add_definitions( BIWAK_LOG_DEBUG )

#define bDebug(a,...) debug(a, __VA_ARGS__)

#include <biwak/log.hpp>

main()
{
   bDebug();      // Just print some text
   bCritical();
   bTrouble();    // 
   bFatal();
   bException("Static text");
}