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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <linux/i2c-dev.h>
#include <linux/i2c.h>
#ifdef WITH_I2C_SMBUS
#include <i2c/smbus.h>
#endif
#include <sys/ioctl.h>
#include "deftypes.h"
#include "lm75.h"
#include "hih61xx.h"
#include "hmc5883.h"
#define VERSION 1.032
#ifndef _BUILD_TIME_
#define _BUILD_TIME_ __DATE__" "__TIME__
#endif
// extern void lm75_print_help(void);
// extern void lm75_read_all(const char *opts);
// extern void lm75_read_one(const char *opts);
// extern void hih61xx_print_help(void);
// extern void hih61xx_read_all(const char *opts);
// extern void hih61xx_read_one(const char *opts);
// >> i2sensor <op> <bus> <dev_typ> <dev_addr> (<others>)
// >> i2sensor read_all 0 lm75 4f 1,-1.0;2,+0.2;3,+10;4,-2
// read_all, list_all,
// ...read_all...<dev_addr>, <param_id,offs,param_id,offs>
// read_one...<dev_addr>, <param_id,offs>
// ...read_reg_hex... <dev_addr>, <reg_addr,b/w/dw>
// ...read_reg_dec... <dev_addr>, <reg_addr,b/w/dw>
// ...set_param... <dev_addr>, <param_id,value_dec>
// ...set_reg... <dev_addr>, <reg_addr,value_hex>
__int16_t devicef=0; //# Bus-Device file
long addr=0, funcs=0;
//__uint8_t temp[256];
void (*print_all)(void) = NULL;
void (*read_all)(const uchar *opts) = NULL;
void (*read_one)(const uchar *opts) = NULL;
void (*conf_set)(const uchar *opts) = NULL;
void print_help(void) {
printf ("\n"
" i2sensors <op> <bus> <dev_type> <dev_addr> (<options>)\n"
"\n"
"Aviable options: <op>\n"
" print_all -- list all available measurement parameters of the device\n"
" read_all -- read all measured parameters from device\n"
" read_one -- read the selected parameters from device\n"
" read_repeat -- read measurements continously\n"
" conf_set -- set the configuration register\n"
" get_info -- List I2C driver functions\n"
"\n"
"Usage:\n"
" i2sensors get_info <bus> \n"
" i2sensors read_all <bus> <device-type> <address> \n"
" i2sensors read_one <bus> <device-type> <address> <param-id,offset_for_param>\n"
" i2sensors conf_set <bus> <device-type> <address> <reg-id,word-of-bits>\n"
"\n"
"Examples:\n"
" i2sensors get_info 2 \n"
" i2sensors read_all 1 lm75 0x4f \n"
" i2sensors read_one 1 lm75 0x4f 00,-1.35\n"
"\n" );
printf ("Version: v%1.3f, build: [%s] (gcc %s) \n\n",VERSION,_BUILD_TIME_,__VERSION__);
}
__uint8_t *xchg_data (__uint8_t *buf, __uint16_t wrlen, __uint16_t waitlen, __uint16_t rdlen){ //# [buf] = 32 byte
#ifdef WITH_I2C_SMBUS
__int32_t data=0;
if( funcs & I2C_FUNC_I2C ){
#endif
if(write(devicef, buf, 1) != 1){ //# write one byte to device
fprintf (stderr, "I2C write error: [NO: %d, MSG: %s] at %s, line %d. (function: %s)\n", errno, strerror(errno), __FILE__, __LINE__, __func__);
}
usleep(waitlen*1000); //# Wait 10ms for reading
if(read(devicef, buf, rdlen) != rdlen) { //# read the result
fprintf (stderr, "I2C read error: [NO: %d, MSG: %s] at %s, line %d. (function: %s)\n", errno, strerror(errno), __FILE__, __LINE__, __func__);
close(devicef);
exit(EXIT_FAILURE);
}
#ifdef WITH_I2C_SMBUS
} else if ( funcs && I2C_FUNC_SMBUS_WORD_DATA ){
if(i2c_smbus_write_byte(devicef, buf[0] ) < 0){ //# write one byte to device
fprintf (stderr, "I2C write error: [NO: %d, MSG: %s] at %s, line %d. (function: %s)\n", errno, strerror(errno), __FILE__, __LINE__, __func__);
}
usleep(waitlen*1000); //# Wait 10ms for reading
if((data = i2c_smbus_read_word_data(devicef, buf[0])) < 0) { //# read the result
fprintf (stderr, "I2C read error: [NO: %d, MSG: %s] at %s, line %d. (function: %s)\n", errno, strerror(errno), __FILE__, __LINE__, __func__);
close(devicef);
exit(EXIT_FAILURE);
} else {
buf[0] = data & 0x0FF;
buf[1] = (data >> 8) & 0x0FF;
}
}
#endif
return buf;
}
void preinit(const char *dev_type){
if(!strcmp("lm75", (char *)dev_type)){
print_all = lm75_print_all;
read_all = lm75_read_all;
read_one = lm75_read_one;
conf_set = lm75_conf_set;
}
else if(!strcmp("hih61xx", (char *)dev_type)) {
print_all = hih61xx_print_all;
read_all = hih61xx_read_all;
read_one = hih61xx_read_one;
conf_set = hih61xx_conf_set;
}
// else if(!strcmp("hmc5883", dev_type)) {
// print_all = hmc5883_print_all;
// read_all = hmc5883_read_all;
// read_one = hmc5883_read_one;
// conf_set = hmc5883_conf_set;
// }
}
int main( int argc, char *argv[] ){
if( (argc == 3 && !strcmp("get_info", argv[1])) || (4 < argc && argc < 10)){ //Minimal 5 arguments should be passed. (or get_info is called)
char filename[256];
int i, file1;
snprintf(filename, 256, "/dev/i2c-%s", argv[2]);
devicef = open(filename, O_RDWR); //# Open the i2c bus
if (devicef < 0){
fprintf(stderr, "\n\tCan't open \"%s\" BUS. (Have you any permission?)\n\n", filename);
exit(EXIT_FAILURE);
}
if (ioctl(devicef, I2C_FUNCS, &funcs) < 0) { //Get i2c device features
fprintf (stderr, "\n\tAdapter function error [ERR: %d, MSG: %s] at %s, line %d. \n", errno, strerror(errno), __FILE__, __LINE__);
close(devicef);
exit(EXIT_FAILURE);
}
if( argc > 4 ){ //If not get_info was called
if(argv[4][0]=='0' && argv[4][1]=='x'){ //# Hexadecimal representetion of device address
addr = (long)strtol(argv[4], NULL, 0); //# strtol() is working with hex-string correctly
if (ioctl(devicef, I2C_SLAVE, addr) < 0){ //I2C_SLAVE_FORCE //# Seeking/Opening the device on the Bus
//printf("\n\tCan't open i2c DEVICE, errno: %d\n\n",errno);
fprintf (stderr, "\n\tCan't open i2c DEVICE! [ERR: %d, MSG: %s] at %s, line %d. \n", errno, strerror(errno), __FILE__, __LINE__);
close(devicef);
exit(EXIT_FAILURE);
}
} else {
fprintf(stderr, "\n\tThe DEVICE address must be a hexadecimal number\n\n");
close(devicef);
exit(EXIT_FAILURE);
}
preinit((char *)argv[3]); //Initialization of subcommands
}
if (!strcmp("print_all",argv[1]) && print_all != NULL){ //# Gets the device's help message.
print_all();
} else if (!strcmp("read_all",argv[1]) && read_all != NULL){ //# Pulls all readable registers data from device
// read_all(argv[5]);
read_all(NULL);
} else if (!strcmp("read_one",argv[1]) && read_one != NULL && argc > 5) { //# Prints out the selected register
read_one((uchar*)argv[5]);
} else if (!strcmp("conf_set",argv[1]) && conf_set != NULL && argc > 5){ //# Prints out the selected register
conf_set((uchar*)argv[5]);
} else if ( !strcmp("get_info", argv[1]) ){
snprintf(filename, 256, "/sys/class/i2c-dev/i2c-%s/name", argv[2]);
file1 = open(filename, O_RDONLY);
i = read(file1, filename, 256 );
if(i > 0) { filename[i-1] = '\0'; }
close(file1);
printf("\n Functions, supported by the [%s] adapter:\n\n", filename);
printf("\tI2C_FUNC_I2C -- ");
if (funcs & I2C_FUNC_I2C){ printf("YES\n"); } else { printf("NO\n"); }
printf("\tI2C_FUNC_SMBUS_BYTE -- ");
if (funcs & I2C_FUNC_SMBUS_BYTE){ printf("YES\n"); } else { printf("NO\n"); }
printf("\tI2C_FUNC_SMBUS_BYTE_DATA -- ");
if (funcs & I2C_FUNC_SMBUS_BYTE_DATA){ printf("YES\n"); } else { printf("NO\n"); }
printf("\tI2C_FUNC_SMBUS_WORD_DATA -- ");
if (funcs & I2C_FUNC_SMBUS_WORD_DATA){ printf("YES\n"); } else { printf("NO\n"); }
printf("\tI2C_FUNC_SMBUS_BLOCK_DATA -- ");
if (funcs & I2C_FUNC_SMBUS_BLOCK_DATA){ printf("YES\n"); } else { printf("NO\n"); }
printf("\tI2C_FUNC_SMBUS_I2C_BLOCK -- ");
if (funcs & I2C_FUNC_SMBUS_I2C_BLOCK){ printf("YES\n"); } else { printf("NO\n"); }
printf("\tI2C_FUNC_SMBUS_EMUL -- ");
if (funcs & I2C_FUNC_SMBUS_EMUL){ printf("YES\n"); } else { printf("NO\n"); }
printf("\tI2C_FUNC_NOSTART -- ");
if (funcs & I2C_FUNC_NOSTART){ printf("YES\n"); } else { printf("NO\n"); }
printf("\tI2C_FUNC_10BIT_ADDR -- ");
if (funcs & I2C_FUNC_10BIT_ADDR){ printf("YES\n"); } else { printf("NO\n"); }
printf("\tI2C_FUNC_PROTOCOL_MANGLING -- ");
if (funcs & I2C_FUNC_PROTOCOL_MANGLING){ printf(" YES\n"); } else { printf("NO\n"); }
printf("\n\tMore info in Linux Kernel Documentation: i2c/functionality.rst\n\n");
} else { //# No other option
print_help();
}
close(devicef);
} else {
print_help();
}
return 0;
}
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