static unsigned w1_read_byte(int mask) {
unsigned result = 0;
if(w1_read(mask)) result |= 0x01;
if(w1_read(mask)) result |= 0x02;
if(w1_read(mask)) result |= 0x04;
if(w1_read(mask)) result |= 0x08;
if(w1_read(mask)) result |= 0x10;
if(w1_read(mask)) result |= 0x20;
if(w1_read(mask)) result |= 0x40;
if(w1_read(mask)) result |= 0x80;
return result;
}
static int handle_1w(const char *line)
{
if (strncmp(line, "read", 4) == 0 && line[4] != '_') {
int n = 1;
if (line[4] == ' ')
n = undec(line+5);
if (n < 1) {
printf("\nERROR:arguments\n");
return 0;
}
printf("1WIRE DATA");
while (n--) {
int r = w1_read(w1);
if (r < 0) {
printf("\nERROR:%i\n", r);
return 0;
}
printf(" %02x", r);
}
printf("\nOK\n");
} else
if (strncmp(line, "write ", 6) == 0) {
line += 5;
int written = 0;
while (line[0] == ' ') {
int data = unhex8(line+1);
if (data < 0)
break;
int r = w1_write(w1, data);
if (r < 0) {
printf("ERROR:%i\n", r);
return 0;
}
line += 3;
written++;
}
printf("OK:%i\n", written);
} else
if (strncmp(line, "read_rom", 8) == 0) {
w1_addr_t addr;
int r = w1_read_rom(w1, &addr);
if (r < 0) {
printf("ERROR:%i\n", r);
return 0;
}
u8 *b = addr.bytes;
printf("OK:%02x%02x%02x%02x%02x%02x%02x%02x\n",
b[0], b[1], b[2], b[3],
b[4], b[5], b[6], b[7]);
} else
if (strncmp(line, "match_rom ", 10) == 0) {
w1_addr_t addr;
w1_unpack(&addr, line+10);
int r = w1_match_rom(w1, addr);
if (r < 0) {
printf("ERROR:%i\n", r);
return 0;
}
printf("OK\n");
} else
if (strncmp(line, "skip_rom", 8) == 0) {
int r = w1_skip_rom(w1);
if (r < 0) {
printf("ERROR:%i\n", r);
return 0;
}
printf("OK\n");
} else
if (strcmp(line, "scan") == 0) {
w1_addr_t addrs[5];
int n = w1_scan(w1, addrs, 5);
if (n <= 0) {
printf("ERROR:%i\n", n);
return 0;
}
printf("OK:%i 1-wire devices:\n", n);
int i;
for (i=0; i<n; i++) {
u8 *b = addrs[i].bytes;
printf("1WIRE DEV %02x%02x%02x%02x%02x%02x%02x%02x\n",
b[0], b[1], b[2], b[3],
b[4], b[5], b[6], b[7]);
}
} else
if (strcmp(line, "scan_read") == 0) {
w1_addr_t addrs[5];
int n = w1_scan(w1, addrs, 5);
if (n <= 0) {
printf("ERROR:%i\n", n);
return 0;
}
printf("OK:%i 1-wire devices:\n", n);
int i;
for (i=0; i<n; i++) {
u8 *b = addrs[i].bytes;
if (addrs[i].bytes[0] == FAMILY_DS18B20) {
s16 temp;
u8 tmp[9];
w1_match_rom(w1, addrs[i]);
w1_write(w1, 0x44); /* conversion */
mdelay(750); /* 750ms conversion time */
w1_match_rom(w1, addrs[i]);
w1_write(w1, 0xbe); /* read */
int j;
for (j=0; j<9; j++)
tmp[j] = w1_read(w1);
if (crc8r(tmp, 9) != 0)
continue;
temp = tmp[1]<<8 | tmp[0];
printf("1WIRE DS18B20 %02x%02x%02x%02x%02x%02x%02x%02x ",
b[0], b[1], b[2], b[3],
b[4], b[5], b[6], b[7]);
if (temp < 0) {
printf("-");
temp = -temp;
}
printf("%i.%02i\n", temp>>4, 100*(temp&0xf)/16);
} else {
