Crt Mori
Logger library enables you to use unified interface to send out or receive data using one function with different parameters. You leave buffer overflows to this library as it handles it all.
Logger library howto guide.
Below is a simple program that outlines the usage of the logger library, The whole function was head-written so there might be some errors, but it is more for a live representation of usage than anything else. If someone would write a nice example program feel free to link it here.
simple usage of logger library
#include "mbed.h"
#include "logger.h"
#include "errno.h"
Ticker printout;
/**
* \def STASH_BUFFER_LEN
* size of stash buffer that can be used to store logged data
*/
#define STASH_BUFFER_LEN 70000
/// stash_buffer size
static char stash_buffer[STASH_BUFFER_LEN];
/**
* Log_pop_periodic is periodically printing the messages until the buffer is empty.
* Once the buffer is empty it detaches and waits for another command.
*/
void log_pop_periodic(void)
{
if( log_pop(L_BTSERIAL,stash_buffer,STASH_BUFFER_LEN) == 1 )
{
printout.detach();
}
}
static int i=0;
static char read_buffer[20];
/**
* read data from BT serial
*/
void read_from_BT()
{
if (BTSerial.readable()) {
read_buffer[i++] = BTSerial.getc();
// if we read the desired character
if (read_buffer[i-1] == 'p')
{
// start the printout process which will log_pop logged data
printout.attach(&log_pop_periodic,0.5);
}
}
}
int main()
{
log_init(L_SERIAL);
log_init(L_BTSERIAL);
BTSerial.attach(&read_from_BT);
// while loop to fill in loads of stinky data
while (1) {
// read something, then stash it
log_stash(L_INFO,print_buffer,strlen(print_buffer),stash_buffer,STASH_BUFFER_LEN);
}
}
Revision 2:9d04753a3ad2, committed 2014-09-08
- Comitter:
- Letme
- Date:
- Mon Sep 08 20:40:27 2014 +0000
- Parent:
- 1:8837abc3f763
- Child:
- 3:e1ed8ae7691e
- Commit message:
- Switched serial port
Changed in this revision
| logger.cpp | Show annotated file Show diff for this revision Revisions of this file |
| logger.h | Show annotated file Show diff for this revision Revisions of this file |
--- a/logger.cpp Sat Mar 29 10:39:24 2014 +0000
+++ b/logger.cpp Mon Sep 08 20:40:27 2014 +0000
@@ -2,9 +2,19 @@
#include "logger.h"
#include "errno.h"
-/** @file logger.cpp */
+/**
+ * @defgroup logger_lib Logger library
+ * @{
+ * @author Crt Lukancic Mori (crt@tech-review.net)
+ * @short Logging library provides more standard re-routing of output.
+ * @details While data logger needs an input to define where it output should go, we
+ * could also override the output using a global variable, which would be read
+ * before the entry into plc switch to override the local output request.
+ *
+ */
-Serial logSerial(PA_2, PA_3);
+//Serial logSerial(PA_2, PA_3);
+Serial logSerial(PA_9, PA_10);
char endline[]="\r\n";
/**
@@ -165,4 +175,7 @@
stash_buffer[i]=0;
}
return 1;
-}
\ No newline at end of file
+}
+/**
+ * @}
+ */
\ No newline at end of file
--- a/logger.h Sat Mar 29 10:39:24 2014 +0000 +++ b/logger.h Mon Sep 08 20:40:27 2014 +0000 @@ -1,16 +1,41 @@ #ifndef _LOGGER_H_ #define _LOGGER_H_ -/** @file logger.cpp */ - +/** + * \def STASH_BUFFER_LEN + * size of stash buffer that can be used to store logged data + */ #define STASH_BUFFER_LEN 50000 -/// log output +/** + * Possible outputs of microcontroller + * @todo include also output to LCD display and some other displays + * \def L_SERIAL + * @ingroup logger_lib + * Output to Serial port + * \def L_FILE + * @ingroup logger_lib + * Output to file + * \def L_LED + * Output to LED (morse code;)) + */ #define L_SERIAL 1 #define L_FILE 2 #define L_LED 3 -/// debug levels +/** + * Error level indication + * @def L_CRIT_ERROR + * Critical error will append CE: to output + * @def L_ERROR + * Error will append E: to output + * @def L_WARNING + * Warning will append W: to output + * @def L_DEBUG + * Debug message will append D: to output + * @def L_INFO + * Information output will append I: to output + */ #define L_CRIT_ERROR 1 #define L_ERROR 2 #define L_WARNING 3