int piBoardRev (void)
{
FILE *cpuFd ;
char line [120] ;
char *c, lastChar ;
static int boardRev = -1 ;
// No point checking twice...
if (boardRev != -1)
return boardRev ;
if ((cpuFd = fopen ("/proc/cpuinfo", "r")) == NULL)
return -1 ;
while (fgets (line, 120, cpuFd) != NULL)
if (strncmp (line, "Revision", 8) == 0)
break ;
fclose (cpuFd) ;
if (line == NULL)
piBoardRevOops ("No \"Revision\" line") ;
line [strlen (line) - 1] = 0 ; // Chomp LF
if (wiringPiDebug)
printf ("piboardRev: Revision string: %s\n", line) ;
for (c = line ; *c ; ++c)
if (isdigit (*c))
break ;
if (!isdigit (*c))
piBoardRevOops ("No numeric revision string") ;
// If you have overvolted the Pi, then it appears that the revision
// has 100000 added to it!
if (wiringPiDebug)
if (strlen (c) != 4)
printf ("piboardRev: This Pi has/is overvolted!\n") ;
lastChar = line [strlen (line) - 1] ;
if (wiringPiDebug)
printf ("piboardRev: lastChar is: '%c' (%d, 0x%02X)\n", lastChar, lastChar, lastChar) ;
/**/ if ((lastChar == '2') || (lastChar == '3'))
boardRev = 1 ;
else
boardRev = 2 ;
if (wiringPiDebug)
printf ("piBoardRev: Returning revision: %d\n", boardRev) ;
return boardRev ;
}
void piBoardId (int *model, int *rev, int *mem, int *maker, int *overVolted)
{
FILE *cpuFd ;
char line [120] ;
char *c ;
// Will deal with the properly later on - for now, lets just get it going...
// unsigned int modelNum ;
(void)piBoardRev () ; // Call this first to make sure all's OK. Don't care about the result.
if ((cpuFd = fopen ("/proc/cpuinfo", "r")) == NULL)
piBoardRevOops ("Unable to open /proc/cpuinfo") ;
while (fgets (line, 120, cpuFd) != NULL)
if (strncmp (line, "Revision", 8) == 0)
break ;
fclose (cpuFd) ;
if (strncmp (line, "Revision", 8) != 0)
piBoardRevOops ("No \"Revision\" line") ;
// Chomp trailing CR/NL
for (c = &line [strlen (line) - 1] ; (*c == '\n') || (*c == '\r') ; --c)
*c = 0 ;
//if (wiringPiDebug)
//printf ("piboardId: Revision string: %s\n", line) ;
if (piModel2)
{
// Scan to the colon
for (c = line ; *c ; ++c)
if (*c == ':')
break ;
if (*c != ':')
piBoardRevOops ("Bogus \"Revision\" line") ;
// modelNum = (unsigned int)strtol (++c, NULL, 16) ; // Hex number with no leading 0x
*model = PI_MODEL_2 ;
*rev = PI_VERSION_1_1 ;
*mem = 1024 ;
*maker = PI_MAKER_SONY ;
}
else
{
// Scan to first digit
for (c = line ; *c ; ++c)
if (isdigit (*c))
break ;
// Make sure its long enough
if (strlen (c) < 4)
piBoardRevOops ("Bogus \"Revision\" line") ;
// If longer than 4, we'll assume it's been overvolted
*overVolted = strlen (c) > 4 ;
// Extract last 4 characters:
c = c + strlen (c) - 4 ;
// Fill out the replys as appropriate
/**/ if (strcmp (c, "0002") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_1 ; *mem = 256 ; *maker = PI_MAKER_EGOMAN ; }
else if (strcmp (c, "0003") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_1_1 ; *mem = 256 ; *maker = PI_MAKER_EGOMAN ; }
else if (strcmp (c, "0004") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 256 ; *maker = PI_MAKER_SONY ; }
else if (strcmp (c, "0005") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 256 ; *maker = PI_MAKER_QISDA ; }
else if (strcmp (c, "0006") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 256 ; *maker = PI_MAKER_EGOMAN ; }
else if (strcmp (c, "0007") == 0) { *model = PI_MODEL_A ; *rev = PI_VERSION_2 ; *mem = 256 ; *maker = PI_MAKER_EGOMAN ; }
else if (strcmp (c, "0008") == 0) { *model = PI_MODEL_A ; *rev = PI_VERSION_2 ; *mem = 256 ; *maker = PI_MAKER_SONY ; ; }
else if (strcmp (c, "0009") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 256 ; *maker = PI_MAKER_QISDA ; }
else if (strcmp (c, "000d") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 512 ; *maker = PI_MAKER_EGOMAN ; }
else if (strcmp (c, "000e") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 512 ; *maker = PI_MAKER_SONY ; }
else if (strcmp (c, "000f") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 512 ; *maker = PI_MAKER_EGOMAN ; }
else if (strcmp (c, "0010") == 0) { *model = PI_MODEL_BP ; *rev = PI_VERSION_1_2 ; *mem = 512 ; *maker = PI_MAKER_SONY ; }
else if (strcmp (c, "0011") == 0) { *model = PI_MODEL_CM ; *rev = PI_VERSION_1_2 ; *mem = 512 ; *maker = PI_MAKER_SONY ; }
else if (strcmp (c, "0012") == 0) { *model = PI_MODEL_AP ; *rev = PI_VERSION_1_2 ; *mem = 256 ; *maker = PI_MAKER_SONY ; }
else if (strcmp (c, "0013") == 0) { *model = PI_MODEL_BP ; *rev = PI_VERSION_1_2 ; *mem = 512 ; *maker = PI_MAKER_MBEST ; }
else { *model = 0 ; *rev = 0 ; *mem = 0 ; *maker = 0 ; }
}
}
int piBoardRev (void)
{
FILE *cpuFd ;
char line [120] ;
char *c ;
static int boardRev = -1 ;
if (boardRev != -1) // No point checking twice
return boardRev ;
if ((cpuFd = fopen ("/proc/cpuinfo", "r")) == NULL)
piBoardRevOops ("Unable to open /proc/cpuinfo") ;
// Start by looking for the Architecture, then we can look for a B2 revision....
while (fgets (line, 120, cpuFd) != NULL)
if (strncmp (line, "Hardware", 8) == 0)
break ;
if (strncmp (line, "Hardware", 8) != 0)
piBoardRevOops ("No \"Hardware\" line") ;
// See if it's BCM2708 or BCM2709
if (strstr (line, "BCM2709") != NULL)
piModel2 = TRUE ;
else if (strstr (line, "BCM2708") == NULL)
{
fprintf (stderr, "Unable to determine hardware version. I see: %s,\n", line) ;
fprintf (stderr, " - expecting BCM2708 or BCM2709. Please report this to [email protected]\n") ;
exit (EXIT_FAILURE) ;
}
// Now do the rest of it as before
rewind (cpuFd) ;
while (fgets (line, 120, cpuFd) != NULL)
if (strncmp (line, "Revision", 8) == 0)
break ;
fclose (cpuFd) ;
if (strncmp (line, "Revision", 8) != 0)
piBoardRevOops ("No \"Revision\" line") ;
// Chomp trailing CR/NL
for (c = &line [strlen (line) - 1] ; (*c == '\n') || (*c == '\r') ; --c)
*c = 0 ;
//if (wiringPiDebug)
//printf ("piboardRev: Revision string: %s\n", line) ;
// Scan to first digit
for (c = line ; *c ; ++c)
if (isdigit (*c))
break ;
if (!isdigit (*c))
piBoardRevOops ("No numeric revision string") ;
// Make sure its long enough
if (strlen (c) < 4)
piBoardRevOops ("Bogus \"Revision\" line (too small)") ;
// If you have overvolted the Pi, then it appears that the revision
// has 100000 added to it!
// The actual condition for it being set is:
// (force_turbo || current_limit_override || temp_limit>85) && over_voltage>0
//if (wiringPiDebug)
//if (strlen (c) != 4)
//printf ("piboardRev: This Pi has/is (force_turbo || current_limit_override || temp_limit>85) && over_voltage>0\n") ;
// Isolate last 4 characters:
c = c + strlen (c) - 4 ;
if ( (strcmp (c, "0002") == 0) || (strcmp (c, "0003") == 0))
boardRev = 1 ;
else
boardRev = 2 ;
return boardRev ;
}
