Memory watcher
This commit is contained in:
Richard Wackerbarth
@@ -612,6 +612,11 @@ const bool Z_PROBE_ENDSTOP_INVERTING = false; // set to true to invert the logic
|
||||
#define EEPROM_CHITCHAT // Please keep turned on if you can.
|
||||
#endif
|
||||
|
||||
//
|
||||
// M99 Free Memory Watcher
|
||||
//
|
||||
#define M99_FREE_MEMORY_WATCHER // uncomment to add the M99 Free Memory Watcher for debug purpose
|
||||
|
||||
// @section temperature
|
||||
|
||||
// Preheat Constants
|
||||
|
||||
277
Marlin/M99_Free_Mem_Chk.cpp
Normal file
277
Marlin/M99_Free_Mem_Chk.cpp
Normal file
@@ -0,0 +1,277 @@
|
||||
#define M99_FREE_MEMORY_DUMPER // Comment out to remove Dump sub-command
|
||||
#define M99_FREE_MEMORY_CORRUPTOR // Comment out to remove Corrupt sub-command
|
||||
|
||||
|
||||
// M99 Free Memory Watcher
|
||||
//
|
||||
// This code watches the free memory block between the bottom of the heap and the top of the stack.
|
||||
// This memory block is initialized and watched via the M99 command.
|
||||
//
|
||||
// M99 I Initializes the free memory block and prints vitals statistics about the area
|
||||
// M99 F Identifies how much of the free memory block remains free and unused. It also
|
||||
// detects and reports any corruption within the free memory block that may have
|
||||
// happened due to errant firmware.
|
||||
// M99 D Does a hex display of the free memory block along with a flag for any errant
|
||||
// data that does not match the expected value.
|
||||
// M99 C x Corrupts x locations within the free memory block. This is useful to check the
|
||||
// correctness of the M99 F and M99 D commands.
|
||||
//
|
||||
// Initial version by Roxy-3DPrintBoard
|
||||
//
|
||||
//
|
||||
|
||||
|
||||
#include "Marlin.h"
|
||||
|
||||
#ifdef M99_FREE_MEMORY_WATCHER
|
||||
extern void *__brkval;
|
||||
extern size_t __heap_start, __heap_end, __flp;
|
||||
|
||||
|
||||
//
|
||||
// Declare all the functions we need from Marlin_Main.cpp to do the work!
|
||||
//
|
||||
|
||||
float code_value();
|
||||
long code_value_long();
|
||||
bool code_seen(char );
|
||||
void serial_echopair_P(const char *, float );
|
||||
void serial_echopair_P(const char *, double );
|
||||
void serial_echopair_P(const char *, unsigned long );
|
||||
void serial_echopair_P(const char *, int );
|
||||
void serial_echopair_P(const char *, long );
|
||||
|
||||
|
||||
|
||||
|
||||
//
|
||||
// Utility functions used by M99 to get its work done.
|
||||
//
|
||||
|
||||
unsigned char *top_of_stack();
|
||||
void prt_hex_nibble( unsigned int );
|
||||
void prt_hex_byte(unsigned int );
|
||||
void prt_hex_word(unsigned int );
|
||||
int how_many_E5s_are_here( unsigned char *);
|
||||
|
||||
|
||||
|
||||
|
||||
void m99_code()
|
||||
{
|
||||
static int m99_not_initialized=1;
|
||||
unsigned char *sp, *ptr;
|
||||
int i, j, n;
|
||||
|
||||
//
|
||||
// M99 D dumps the free memory block from __brkval to the stack pointer.
|
||||
// malloc() eats memory from the start of the block and the stack grows
|
||||
// up from the bottom of the block. Solid 0xE5's indicate nothing has
|
||||
// used that memory yet. There should not be anything but 0xE5's within
|
||||
// the block of 0xE5's. If there is, that would indicate memory corruption
|
||||
// probably caused by bad pointers. Any unexpected values will be flagged in
|
||||
// the right hand column to help spotting them.
|
||||
//
|
||||
|
||||
#ifdef M99_FREE_MEMORY_DUMPER // Comment out to remove Dump sub-command
|
||||
if ( code_seen('D') ) {
|
||||
ptr = (unsigned char *) __brkval;
|
||||
|
||||
//
|
||||
// We want to start and end the dump on a nice 16 byte boundry even though
|
||||
// the values we are using are not 16 byte aligned.
|
||||
//
|
||||
SERIAL_ECHOPGM("\n__brkval : ");
|
||||
prt_hex_word( (unsigned int) ptr );
|
||||
ptr = (unsigned char *) ((unsigned long) ptr & 0xfff0);
|
||||
|
||||
sp = top_of_stack();
|
||||
SERIAL_ECHOPGM("\nStack Pointer : ");
|
||||
prt_hex_word( (unsigned int) sp );
|
||||
SERIAL_ECHOPGM("\n");
|
||||
|
||||
sp = (unsigned char *) ((unsigned long) sp | 0x000f);
|
||||
n = sp - ptr;
|
||||
//
|
||||
// This is the main loop of the Dump command.
|
||||
//
|
||||
while ( ptr < sp ) {
|
||||
prt_hex_word( (unsigned int) ptr); // Print the address
|
||||
SERIAL_ECHOPGM(":");
|
||||
for(i=0; i<16; i++) { // and 16 data bytes
|
||||
prt_hex_byte( *(ptr+i));
|
||||
SERIAL_ECHOPGM(" ");
|
||||
delay(2);
|
||||
}
|
||||
|
||||
SERIAL_ECHO("|"); // now show where non 0xE5's are
|
||||
for(i=0; i<16; i++) {
|
||||
delay(2);
|
||||
if ( *(ptr+i)==0xe5)
|
||||
SERIAL_ECHOPGM(" ");
|
||||
else
|
||||
SERIAL_ECHOPGM("?");
|
||||
}
|
||||
SERIAL_ECHO("\n");
|
||||
|
||||
ptr += 16;
|
||||
delay(2);
|
||||
}
|
||||
SERIAL_ECHOLNPGM("Done.\n");
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
|
||||
//
|
||||
// M99 F requests the code to return the number of free bytes in the memory pool along with
|
||||
// other vital statistics that define the memory pool.
|
||||
//
|
||||
if ( code_seen('F') ) {
|
||||
int max_addr = (int) __brkval;
|
||||
int max_cnt = 0;
|
||||
int block_cnt = 0;
|
||||
ptr = (unsigned char *) __brkval;
|
||||
sp = top_of_stack();
|
||||
n = sp - ptr;
|
||||
|
||||
// Scan through the range looking for the biggest block of 0xE5's we can find
|
||||
|
||||
for(i=0; i<n; i++) {
|
||||
if ( *(ptr+i) == (unsigned char) 0xe5) {
|
||||
j = how_many_E5s_are_here( (unsigned char *) ptr+i );
|
||||
if ( j>8) {
|
||||
SERIAL_ECHOPAIR("Found ", j );
|
||||
SERIAL_ECHOPGM(" bytes free at 0x");
|
||||
prt_hex_word( (int) ptr+i );
|
||||
SERIAL_ECHOPGM("\n");
|
||||
i += j;
|
||||
block_cnt++;
|
||||
}
|
||||
if ( j>max_cnt) { // We don't do anything with this information yet
|
||||
max_cnt = j; // but we do know where the biggest free memory block is.
|
||||
max_addr = (int) ptr+i;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (block_cnt>1)
|
||||
SERIAL_ECHOLNPGM("\nMemory Corruption detected in free memory area.\n");
|
||||
|
||||
SERIAL_ECHO("\nDone.\n");
|
||||
return;
|
||||
}
|
||||
//
|
||||
// M99 C x Corrupts x locations in the free memory pool and reports the locations of the corruption.
|
||||
// This is useful to check the correctness of the M99 D and the M99 F commands.
|
||||
//
|
||||
#ifdef M99_FREE_MEMORY_CORRUPTOR
|
||||
if ( code_seen('C') ) {
|
||||
int x; // x gets the # of locations to corrupt within the memory pool
|
||||
x = code_value();
|
||||
SERIAL_ECHOLNPGM("Corrupting free memory block.\n");
|
||||
ptr = (unsigned char *) __brkval;
|
||||
SERIAL_ECHOPAIR("\n__brkval : ",(long) ptr );
|
||||
ptr += 8;
|
||||
|
||||
sp = top_of_stack();
|
||||
SERIAL_ECHOPAIR("\nStack Pointer : ",(long) sp );
|
||||
SERIAL_ECHOLNPGM("\n");
|
||||
|
||||
n = sp - ptr - 64; // -64 just to keep us from finding interrupt activity that
|
||||
// has altered the stack.
|
||||
j = n / (x+1);
|
||||
for(i=1; i<=x; i++) {
|
||||
*(ptr+(i*j)) = i;
|
||||
SERIAL_ECHO("\nCorrupting address: 0x");
|
||||
prt_hex_word( (unsigned int) (ptr+(i*j)) );
|
||||
}
|
||||
SERIAL_ECHOLNPGM("\n");
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
|
||||
//
|
||||
// M99 I Initializes the free memory pool so it can be watched and prints vital
|
||||
// statistics that define the free memory pool.
|
||||
//
|
||||
if (m99_not_initialized || code_seen('I') ) { // If no sub-command is specified, the first time
|
||||
SERIAL_ECHOLNPGM("Initializing free memory block.\n"); // this happens, it will Initialize.
|
||||
ptr = (unsigned char *) __brkval; // Repeated M99 with no sub-command will not destroy the
|
||||
SERIAL_ECHOPAIR("\n__brkval : ",(long) ptr ); // state of the initialized free memory pool.
|
||||
ptr += 8;
|
||||
|
||||
sp = top_of_stack();
|
||||
SERIAL_ECHOPAIR("\nStack Pointer : ",(long) sp );
|
||||
SERIAL_ECHOLNPGM("\n");
|
||||
|
||||
n = sp - ptr - 64; // -64 just to keep us from finding interrupt activity that
|
||||
// has altered the stack.
|
||||
|
||||
SERIAL_ECHO( n );
|
||||
SERIAL_ECHOLNPGM(" bytes of memory initialized.\n");
|
||||
|
||||
for(i=0; i<n; i++)
|
||||
*(ptr+i) = (unsigned char) 0xe5;
|
||||
|
||||
for(i=0; i<n; i++) {
|
||||
if ( *(ptr+i) != (unsigned char) 0xe5 ) {
|
||||
SERIAL_ECHOPAIR("? address : ", (unsigned long) ptr+i );
|
||||
SERIAL_ECHOPAIR("=", *(ptr+i) );
|
||||
SERIAL_ECHOLNPGM("\n");
|
||||
}
|
||||
}
|
||||
m99_not_initialized = 0;
|
||||
SERIAL_ECHOLNPGM("Done.\n");
|
||||
return;
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
// top_of_stack() returns the location of a variable on its stack frame. The value returned is above
|
||||
// the stack once the function returns to the caller.
|
||||
|
||||
unsigned char *top_of_stack() {
|
||||
unsigned char x;
|
||||
return &x;
|
||||
}
|
||||
|
||||
//
|
||||
// 3 support routines to print hex numbers. We can print a nibble, byte and word
|
||||
//
|
||||
|
||||
void prt_hex_nibble( unsigned int n )
|
||||
{
|
||||
if ( n <= 9 )
|
||||
SERIAL_ECHO(n);
|
||||
else
|
||||
SERIAL_ECHO( (char) ('A'+n-10) );
|
||||
delay(2);
|
||||
}
|
||||
|
||||
void prt_hex_byte(unsigned int b)
|
||||
{
|
||||
prt_hex_nibble( ( b & 0xf0 ) >> 4 );
|
||||
prt_hex_nibble( b & 0x0f );
|
||||
}
|
||||
|
||||
void prt_hex_word(unsigned int w)
|
||||
{
|
||||
prt_hex_byte( ( w & 0xff00 ) >> 8 );
|
||||
prt_hex_byte( w & 0x0ff );
|
||||
}
|
||||
|
||||
// how_many_E5s_are_here() is a utility function to easily find out how many 0xE5's are
|
||||
// at the specified location. Having this logic as a function simplifies the search code.
|
||||
//
|
||||
int how_many_E5s_are_here( unsigned char *p)
|
||||
{
|
||||
int n;
|
||||
|
||||
for(n=0; n<32000; n++) {
|
||||
if ( *(p+n) != (unsigned char) 0xe5)
|
||||
return n-1;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
@@ -225,6 +225,10 @@
|
||||
*
|
||||
*/
|
||||
|
||||
#ifdef M99_FREE_MEMORY_WATCHER
|
||||
void m99_code();
|
||||
#endif
|
||||
|
||||
#ifdef SDSUPPORT
|
||||
CardReader card;
|
||||
#endif
|
||||
@@ -5372,6 +5376,12 @@ void process_next_command() {
|
||||
break;
|
||||
#endif // ENABLE_AUTO_BED_LEVELING && Z_PROBE_REPEATABILITY_TEST
|
||||
|
||||
#ifdef M99_FREE_MEMORY_WATCHER
|
||||
case 99:
|
||||
m99_code();
|
||||
break;
|
||||
#endif
|
||||
|
||||
case 104: // M104
|
||||
gcode_M104();
|
||||
break;
|
||||
|
||||
Reference in New Issue
Block a user