static void read_co2(char* buf){
static uint32_t co2_1000;
co2_1000=sensor_value(0);//valore misurato x 1000
sprintf(buf,"%d",((co2_1000*2500)/4095));
}
int test_sensor(int s)
{
if ((0 > s) || (s >= SENSOR_COUNT))
return 0;
return !TESTBIT(sensor_value(), s);
}
unsigned char *
var_sensors_table(struct variable *vp, oid *name, size_t *length, int exact,
size_t *var_len, WriteMethod **write_method)
{
int index;
struct sensor sensor;
struct sensordev sdev;
static u_long ulong_ret;
static unsigned char str[BUFSIZ];
sensor_refresh();
if (num_sensors == 0)
return (NULL);
if (header_simple_table(vp, name, length, exact, var_len,
write_method, num_sensors)
== MATCH_FAILED)
return (NULL);
index = name[*length-1]-1;
if (sensor_get(index, &sdev, &sensor))
return (NULL);
switch (vp->magic) {
case SENS_INDEX:
ulong_ret = name[*length-1];
return (unsigned char *) &ulong_ret;
case SENS_DESCR:
sensor_desc(index, &sensor, str, BUFSIZ);
*var_len = strlen(str);
return (unsigned char *) str;
case SENS_TYPE:
ulong_ret = sensor.type;
return (unsigned char *) &ulong_ret;
case SENS_DEVICE:
if ((*var_len = strlcpy(str, sdev.xname, BUFSIZ)) !=
strlen(sdev.xname))
return (NULL);
return (unsigned char *) str;
case SENS_VALUE:
sensor_value(&sensor, str);
*var_len = strlen(str);
return (unsigned char *) str;
case SENS_UNITS:
sensor_units(&sensor, str);
*var_len = strlen(str);
return (unsigned char *) str;
case SENS_STATUS:
ulong_ret = sensor.status;
return (unsigned char *) &ulong_ret;
default:
return (NULL);
}
/* NOTREACHED */
}
static void read_co(char *buf){
static uint32_t sens_1000;
co=sensor_value(0);
sens_1000 = 122850/co; // ho moltiplicato per 1000
if (sens_1000>800) sprintf(buf,"%d",100);
else if (sens_1000>500)
sprintf(buf,"%lu", (uint32_t)((-300*sens_1000)+250000)/1000);
else sprintf(buf, "%lu",(uint32_t)(-3600*sens_1000+1900000)/1000);
}
/*---------------------------------------------------------------------------*/
void motion_resource_periodic_handler(resource_t *r) {
static int event_counter;
char buffer[16];
PRINTF("*** motion_resource_periodic_handler(): called!\n");
int value = 4095-sensor_value(0);
PRINTF("%d", value);
sprintf(buffer, "%d", value);
coap_packet_t notification[1];
coap_init_message(notification, COAP_TYPE_NON, REST.status.OK, 0);
coap_set_payload(notification, buffer, strlen(buffer)+1);
REST.notify_subscribers(r, event_counter++, notification);
PRINTF("*** motion_resource_periodic_handler(): done\n");
}
void motion_resource_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset) {
int8_t length;
uint8_t method = REST.get_method_type(request);
if(method & METHOD_GET) {
sprintf(buffer, "%d", sensor_value(0));
length = strlen(buffer)+1;
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
REST.set_header_etag(response, (uint8_t *) &length, 1);
REST.set_response_status(response, REST.status.OK);
REST.set_response_payload(response, buffer, length);
} else
REST.set_response_status(response, REST.status.BAD_REQUEST);
}
int main( int argc, char **argv )
{
char buf[ 256 ];
uint8_t val;
if ( !ev3_connect()) return ( 1 );
tacho_start( OUT_ALL, 20 );
sleep_msec( 2000 );
tacho_stop( OUT_ALL );
sleep_msec( 100 );
if ( sensor_name( IN_1, buf )) printf( "IN_1 '%s'\n", buf );
sleep_msec( 100 );
if ( sensor_value( IN_1, &val )) printf( "IN_1 value = %d\n", val );
ev3_tcp_disconnect();
return ( 0 );
}
void next_sensor() {
byte i;
byte present = 0;
byte type_s;
byte data[12];
byte addr[8];
long key = 0;
if ( !ds.search(addr)) {
Serial.println("No more addresses.");
next_sensor_frame();
ds.reset_search();
delay(250);
return;
}
if (OneWire::crc8(addr, 7) != addr[7]) {
Serial.println("CRC is not valid!");
return;
}
for(i=0; i<4; i++){
key = (key << 8) + addr[i];
}
// the first ROM byte indicates which chip
switch (addr[0]) {
case 0x10: // Chip = DS18S20
type_s = 1;
break;
case 0x28: // Chip = DS18B20
type_s = 0;
break;
case 0x22: // Chip = DS1822
type_s = 0;
break;
default: // Device is not a DS18x20 family device
return;
}
ds.reset();
ds.select(addr);
ds.write(0x44, 1); // start conversion, with parasite power on at the end
delay(1000); // maybe 750ms is enough, maybe not
// we might do a ds.depower() here, but the reset will take care of it.
present = ds.reset();
ds.select(addr);
ds.write(0xBE); // Read Scratchpad
for ( i = 0; i < 9; i++) { // we need 9 bytes
data[i] = ds.read();
}
// Convert the data to actual temperature
// because the result is a 16 bit signed integer, it should
// be stored to an "int16_t" type, which is always 16 bits
// even when compiled on a 32 bit processor.
int16_t raw = (data[1] << 8) | data[0];
if (type_s) {
raw = raw << 3; // 9 bit resolution default
if (data[7] == 0x10) {
// "count remain" gives full 12 bit resolution
raw = (raw & 0xFFF0) + 12 - data[6];
}
} else {
byte cfg = (data[4] & 0x60);
// at lower res, the low bits are undefined, so let's zero them
if (cfg == 0x00) raw = raw & ~7; // 9 bit resolution, 93.75 ms
else if (cfg == 0x20) raw = raw & ~3; // 10 bit res, 187.5 ms
else if (cfg == 0x40) raw = raw & ~1; // 11 bit res, 375 ms
//// default is 12 bit resolution, 750 ms conversion time
}
sensor_value(key, raw);
}
