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Code Issues Releases Wiki Activity

add PEC support

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git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1445 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Mark D. Studebaker
2002-07-11 02:24:56 +00:00
parent ecc5086d39
commit 1a6cc8f95d
1 changed files with 78 additions and 22 deletions
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100
prog/dump/i2cdump.c
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@@ -1,6 +1,6 @@
/* /*
i2cdump.c - Part of i2cdump, a user-space program to dump I2C registers i2cdump.c - Part of i2cdump, a user-space program to dump I2C registers
Copyright (c) 2000 Frodo Looijaard <frodol@dds.nl>, and Copyright (c) 2002 Frodo Looijaard <frodol@dds.nl>, and
Mark D. Studebaker <mdsxyz123@yahoo.com> Mark D. Studebaker <mdsxyz123@yahoo.com>
This program is free software; you can redistribute it and/or modify This program is free software; you can redistribute it and/or modify
@@ -37,6 +37,9 @@
#define USE_I2C_BLOCK 0 #define USE_I2C_BLOCK 0
#endif #endif
#ifdef I2C_FUNC_SMBUS_BLOCK_DATA_PEC
#define HAVE_PEC 1
#endif
void help(void) void help(void)
{ {
@@ -45,6 +48,7 @@ void help(void)
fprintf(stderr,"Syntax: i2cdump I2CBUS ADDRESS [MODE] [BANK [BANKREG]]\n"); fprintf(stderr,"Syntax: i2cdump I2CBUS ADDRESS [MODE] [BANK [BANKREG]]\n");
fprintf(stderr," MODE is 'b[yte]', 'w[ord]', 's[mbusblock], or 'i[2cblock]' (default b)\n"); fprintf(stderr," MODE is 'b[yte]', 'w[ord]', 's[mbusblock], or 'i[2cblock]' (default b)\n");
fprintf(stderr," Append MODE with 'p' for PEC checking\n");
fprintf(stderr," I2CBUS is an integer\n"); fprintf(stderr," I2CBUS is an integer\n");
fprintf(stderr," ADDRESS is an integer 0x00 - 0x7f\n"); fprintf(stderr," ADDRESS is an integer 0x00 - 0x7f\n");
fprintf(stderr," BANK and BANKREG are for byte and word accesses (default bank 0, reg 0x4e)\n"); fprintf(stderr," BANK and BANKREG are for byte and word accesses (default bank 0, reg 0x4e)\n");
@@ -70,6 +74,7 @@ int main(int argc, char *argv[])
long funcs; long funcs;
unsigned char cblock[256]; unsigned char cblock[256];
int block[256]; int block[256];
int pec = 0;
if (argc < 2) { if (argc < 2) {
fprintf(stderr,"Error: No i2c-bus specified!\n"); fprintf(stderr,"Error: No i2c-bus specified!\n");
@@ -105,15 +110,18 @@ int main(int argc, char *argv[])
} }
if (argc < 4) { if (argc < 4) {
fprintf(stderr,"Warning: no size specified (using byte-data access)\n"); fprintf(stderr,"No size specified (using byte-data access)\n");
size = I2C_SMBUS_BYTE_DATA; size = I2C_SMBUS_BYTE_DATA;
} else if (!strcmp(argv[3],"b")) } else if (!strncmp(argv[3],"b",1)) {
size = I2C_SMBUS_BYTE_DATA; size = I2C_SMBUS_BYTE_DATA;
else if (!strcmp(argv[3],"w")) pec = argv[3][1] == 'p';
} else if (!strncmp(argv[3],"w",1)) {
size = I2C_SMBUS_WORD_DATA; size = I2C_SMBUS_WORD_DATA;
else if (!strcmp(argv[3],"s")) pec = argv[3][1] == 'p';
} else if (!strncmp(argv[3],"s",1)) {
size = I2C_SMBUS_BLOCK_DATA; size = I2C_SMBUS_BLOCK_DATA;
else if (!strcmp(argv[3],"i")) pec = argv[3][1] == 'p';
} else if (!strcmp(argv[3],"i"))
size = I2C_SMBUS_I2C_BLOCK_DATA; size = I2C_SMBUS_I2C_BLOCK_DATA;
else { else {
fprintf(stderr,"Error: Invalid mode!\n"); fprintf(stderr,"Error: Invalid mode!\n");
@@ -213,27 +221,60 @@ int main(int argc, char *argv[])
switch(size) { switch(size) {
case I2C_SMBUS_BYTE_DATA: case I2C_SMBUS_BYTE_DATA:
if (! (funcs & I2C_FUNC_SMBUS_READ_BYTE_DATA)) { #ifdef HAVE_PEC
fprintf(stderr, "Error: Adapter for i2c bus %d", i2cbus); if(pec) {
fprintf(stderr, " does not have byte read capability\n"); if (! (funcs & I2C_FUNC_SMBUS_READ_BYTE_DATA_PEC)) {
exit(1); fprintf(stderr, "Error: Adapter for i2c bus %d", i2cbus);
} fprintf(stderr, " does not have byte read w/ PEC capability\n");
exit(1);
}
} else
#endif
{
if (! (funcs & I2C_FUNC_SMBUS_READ_BYTE_DATA)) {
fprintf(stderr, "Error: Adapter for i2c bus %d", i2cbus);
fprintf(stderr, " does not have byte read capability\n");
exit(1);
}
}
break; break;
case I2C_SMBUS_WORD_DATA: case I2C_SMBUS_WORD_DATA:
if (! (funcs & I2C_FUNC_SMBUS_READ_WORD_DATA)) { #ifdef HAVE_PEC
fprintf(stderr, "Error: Adapter for i2c bus %d", i2cbus); if(pec) {
fprintf(stderr, " does not have word read capability\n"); if (! (funcs & I2C_FUNC_SMBUS_READ_WORD_DATA_PEC)) {
exit(1); fprintf(stderr, "Error: Adapter for i2c bus %d", i2cbus);
} fprintf(stderr, " does not have word read w/ PEC capability\n");
exit(1);
}
} else
#endif
{
if (! (funcs & I2C_FUNC_SMBUS_READ_WORD_DATA)) {
fprintf(stderr, "Error: Adapter for i2c bus %d", i2cbus);
fprintf(stderr, " does not have word read capability\n");
exit(1);
}
}
break; break;
case I2C_SMBUS_BLOCK_DATA: case I2C_SMBUS_BLOCK_DATA:
if (! (funcs & I2C_FUNC_SMBUS_READ_BLOCK_DATA)) { #ifdef HAVE_PEC
fprintf(stderr, "Error: Adapter for i2c bus %d", i2cbus); if(pec) {
fprintf(stderr, " does not have smbus block read capability\n"); if (! (funcs & I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC)) {
exit(1); fprintf(stderr, "Error: Adapter for i2c bus %d", i2cbus);
} fprintf(stderr, " does not have smbus block read capability\n");
exit(1);
}
} else
#endif
{
if (! (funcs & I2C_FUNC_SMBUS_READ_BLOCK_DATA)) {
fprintf(stderr, "Error: Adapter for i2c bus %d", i2cbus);
fprintf(stderr, " does not have smbus block read w/ PEC capability\n");
exit(1);
}
}
break; break;
case I2C_SMBUS_I2C_BLOCK_DATA: case I2C_SMBUS_I2C_BLOCK_DATA:
@@ -253,18 +294,33 @@ int main(int argc, char *argv[])
exit(1); exit(1);
} }
if(pec) {
#ifdef HAVE_PEC
if (ioctl(file,I2C_PEC, 1) < 0) {
fprintf(stderr,"Error: Could not set PEC: %s\n", strerror(errno));
exit(1);
}
#else
fprintf(stderr,"Error: PEC not supported in your kernel\n");
exit(1);
#endif
}
fprintf(stderr," WARNING! This program can confuse your I2C bus, " fprintf(stderr," WARNING! This program can confuse your I2C bus, "
"cause data loss and worse!\n"); "cause data loss and worse!\n");
fprintf(stderr," I will probe file %s, address 0x%x, mode %s\n", fprintf(stderr," I will probe file %s, address 0x%x, mode %s\n",
filename,address,size == I2C_SMBUS_BLOCK_DATA ? "smbus block" : filename,address,size == I2C_SMBUS_BLOCK_DATA ? "smbus block" :
size == I2C_SMBUS_I2C_BLOCK_DATA ? "i2c block" : size == I2C_SMBUS_I2C_BLOCK_DATA ? "i2c block" :
size == I2C_SMBUS_BYTE_DATA ? "byte" : "word"); size == I2C_SMBUS_BYTE_DATA ? "byte" : "word");
if(bank) if(pec)
fprintf(stderr," with PEC checking.\n", bank);
if(bank) {
if(size == I2C_SMBUS_BLOCK_DATA) if(size == I2C_SMBUS_BLOCK_DATA)
fprintf(stderr," Using command 0x%02x.\n", bank); fprintf(stderr," Using command 0x%02x.\n", bank);
else else
fprintf(stderr," Probing bank %d using bank register 0x%02x.\n", fprintf(stderr," Probing bank %d using bank register 0x%02x.\n",
bank, bankreg); bank, bankreg);
}
fprintf(stderr," You have five seconds to reconsider and press CTRL-C!\n\n"); fprintf(stderr," You have five seconds to reconsider and press CTRL-C!\n\n");
sleep(5); sleep(5);