Embedded Artists / Mbed OS DMSupport

A board support package for the LPC4088 Display Module.

Dependencies:   DM_HttpServer DM_USBHost

Dependents:   lpc4088_displaymodule_emwin lpc4088_displaymodule_demo_sphere sampleGUI sampleEmptyGUI ... more

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RtosLog Class Reference
Public Member Functions

RtosLog Class Reference

All threads can independantly call the printf function in the RtosLog class without risk of getting the output tangled up. More...

#include <RtosLog.h>

Public Member Functions

void init ()
 Starts the logger thread, called from DMBoard::instance().init()
int printf (const char *format,...)
 Printf that works in an RTOS.
int isr_printf (const char *format,...)
 Printf that works in an RTOS.

Detailed Description

All threads can independantly call the printf function in the RtosLog class without risk of getting the output tangled up.

The RtosLog class uses a Thread to process the messages one at a time.

Example of using the RtosLog class:

 #include "mbed.h"
 #include "DMBoard.h"

 void myTask(void const*args) {
    RtosLog* log = DMBoard::instance().logger();
    ...
    log->printf("Hello world!\n");
    ...
 }

Definition at line 50 of file RtosLog.h.

Member Function Documentation

void init (  )

Starts the logger thread, called from DMBoard::instance().init()

Definition at line 88 of file RtosLog.cpp.

int isr_printf ( const char *  format,
  ... 
)

Printf that works in an RTOS.

This function will create a string from the specified format and optional extra arguments and put it into a message that the RtosLog thread will write to the log.

Note that if the underlying queue is full then this function discards the message and returns immediately.

Parameters:
formatformat string
...optional extra arguments

Definition at line 135 of file RtosLog.cpp.

int printf ( const char *  format,
  ... 
)

Printf that works in an RTOS.

This function will create a string from the specified format and optional extra arguments and put it into a message that the RtosLog thread will write to the log.

Note that if the underlying queue is full then this function will block until an entry becomes available. This is required to make sure that all printf calls actually get printed. If this happens too often then increase the priority of the RtosLog thread or reduce the number of printed messages.

Parameters:
formatformat string
...optional extra arguments

Definition at line 96 of file RtosLog.cpp.

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