Switch to predefined array of sensors instead of i2c scan
Creating sensor types
sensors with different data retrieval methods
| id | name | Sensors |
|---|---|---|
| 0 | SHT2x | SHT20, SHT21, SHT25, HTU21d |
| 1 | Si7021 | Si7021 |
| 2 | HDC10xx | HDC1080 |
| 3 | SHT3c | SHT30, SHT31, SHT35, SHT88 |
| 4 | BME280 | BME280 |
| 5 | BME680 | BME680 |
| 6 | DHT1x | DHT12 |
| 7 | DHT2x | DHT22 |
const uint8_t EMPTY = 0; /* slot is empty or sensor disabled */ const uint8_t SHT2X = 1; /* include SHT20, SHT21, SHT25, HTU21d*/ const uint8_t SI70XX = 2; /* includes Si7021 */ const uint8_t HDC10xx = 3; /* includes HDC1080 */ const uint8_t SHT3X = 4; /* include SHT30, SHT31, SHT35, SHT88*/ const uint8_t BME280 = 5; /* includes BME280 */ const uint8_t BME680 = 6; /* includes BME680 */ const uint8_t DHT1X = 7; /* includes DHT12 */ const uint8_t DHT2X = 8; /* includes DHT22 */
Define multiplexors
| id | i2c adddr | Description | switch |
|---|---|---|---|
| 0 | 112 | Main Multiplexer with most of SHT2x, SHT3x, BMEx, DHT12 sensors | 000 |
| 1 | 113 | Second Multiplexor with Si7021 | 001 |
| 2 | 114 | Third Multiplexer with HDC1080, BME680-2, SHT85, SHT3x | 010 |
| 3 | 115 | Fourth Multiplexer with DHT22 (5v sensors), additional board | 100 |
uint8_t multiplexer[4]={112,113,114,115};
Define sensors map
using v2 7x8 Sensors board project#SensorsMap
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
|---|---|---|---|---|---|---|---|---|
| 1 | SHT25* | SHT21 | SHT21 | SHT21 | SHT21 | SHT20 | SHT20 | SHT20 |
| SHT35 | SHT35 | SHT31 | SHT31 | SHT31 | SHT31 | SHT30 | SHT30 | |
| BME680 | BME680 | BME280 | BME280 | BME280 | DHT12 | DHT12 | DHT12 | |
| 2 | HTU21 | Si7021 | Si7021 | Si7021 | Si7021 | Si7021 | Si7021 | Si7021 |
| 3 | HDC1080 | HDC1080 | HDC1080 | HDC1080 | HDC1080 | HDC1080 | HDC1080 | HDC1080 |
| BME680 | BME680 | SHT85 | SHT85 | SHT85 | SHT31 | SHT31 | ||
| 4 | DHT22 | DHT22 | DHT22 | DHT22 |
see Test i2c humidity sensors#Sensori2caddressesandvoltages
Sensor | address | alt address |
|---|---|---|
| Senserion SHT2x | 0x40 (64) | 0x41 (65) |
| Senserion SHT3x | 0x44 (68) | 0x45 (69) |
| Senserion SHT8x | 0x44 (58) | |
| Meas(1) HTU21D | 0x40 (64) | |
| Silicon Labs Si7021 | 0x40 (64) | |
| Bosch(2) BMEx80 | 0x76 (118) | 0x77 (119) |
| Bosch(2) BME280 | 0x76 (118) | 0x77 (119) |
| Ti(3) HDC1080 | 0x40 (64) | |
| AOSONG DHT12 | 0x5C (92) | |
| AOSONG AM2320 | 0x5C (92) | 0xB8 ? |
1 TE Connectivity Measurement Specialties
Prepare for code
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | |
|---|---|---|---|---|---|---|---|---|
| 0 | SHT25* | SHT21 | SHT21 | SHT21 | SHT21 | SHT20 | SHT20 | SHT20 |
| SHT35 | SHT35 | SHT31 | SHT31 | SHT31 | SHT31 | SHT30 | SHT30 | |
| BME680 | BME680 | BME280 | BME280 | BME280 | DHT12 | DHT12 | DHT12 | |
| 1 | HTU21 | Si7021 | Si7021 | Si7021 | Si7021 | Si7021 | Si7021 | Si7021 |
| 2 | HDC1080 | HDC1080 | HDC1080 | HDC1080 | HDC1080 | HDC1080 | HDC1080 | HDC1080 |
| BME680 | BME680 | SHT85 | SHT85 | SHT85 | SHT31 | SHT31 | ||
| 3 | DHT22 |
Array to map sensors
demo sketch to debug array with serial
uint8_t multiplexer[4] = {112, 113, 114, 115};
// Type of sensor
const uint8_t EMPTY = 0; /* slot is empty or sensor disabled */
const uint8_t SHT2X = 1; /* include SHT20, SHT21, SHT25, HTU21d*/
const uint8_t SI70XX = 2; /* includes Si7021 */
const uint8_t HDC10xx = 3; /* includes HDC1080 */
const uint8_t SHT3X = 4; /* include SHT30, SHT31, SHT35, SHT88*/
const uint8_t BME280 = 5; /* includes BME280 */
const uint8_t BME680 = 6; /* includes BME680 */
const uint8_t DHT1X = 7; /* includes DHT12 */
const uint8_t DHT2X = 8; /* includes DHT22 */
// indexes name in sensor arrays
const uint8_t get_type = 0; /* indexes name in sensor arrays */
const uint8_t get_collumn = 1; /* indexes name in sensor arrays */
const uint8_t get_address = 2; /* indexes name in sensor arrays */
// Sensor properties by [multiplexor][i2c_bus][number][get_type/get_collumn/get_address]
uint8_t sensor[4][8][3][3] =
{
{
{ {SHT2X, 1, 64}, {SHT3X, 2, 68}, {BME680, 3, 119} },
{ {SHT2X, 1, 64}, {SHT3X, 2, 68}, {BME680, 3, 119} },
{ {SHT2X, 1, 64}, {SHT3X, 2, 68}, {BME280, 3, 118} },
{ {SHT2X, 1, 64}, {SHT3X, 2, 68}, {BME280, 3, 118} },
{ {SHT2X, 1, 64}, {SHT3X, 2, 68}, {BME280, 3, 118} },
{ {SHT2X, 1, 64}, {SHT3X, 2, 68}, {DHT1X, 3, 92} },
{ {SHT2X, 1, 64}, {SHT3X, 2, 68}, {DHT1X, 3, 92} },
{ {SHT2X, 1, 64}, {SHT3X, 2, 68}, {DHT1X, 3, 92} }
},
{
{ {SHT2X, 4, 64}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {SI70XX, 4, 64}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {SI70XX, 4, 64}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {SI70XX, 4, 64}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {SI70XX, 4, 64}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {SI70XX, 4, 64}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {SI70XX, 4, 64}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {SI70XX, 4, 64}, {EMPTY, 0, 0}, {EMPTY, 0, 0} }
},
{
{ {HDC10xx, 5, 64}, {BME680, 0, 118}, {EMPTY, 0, 0} },
{ {HDC10xx, 5, 64}, {BME680, 0, 118}, {EMPTY, 0, 0} },
{ {HDC10xx, 5, 64}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {HDC10xx, 5, 64}, {SHT3X, 6, 68}, {EMPTY, 0, 0} },
{ {HDC10xx, 5, 64}, {SHT3X, 6, 68}, {EMPTY, 0, 0} },
{ {HDC10xx, 5, 64}, {SHT3X, 6, 68}, {EMPTY, 0, 0} },
{ {HDC10xx, 5, 64}, {SHT3X, 6, 68}, {EMPTY, 0, 0} },
{ {HDC10xx, 5, 64}, {SHT3X, 6, 68}, {EMPTY, 0, 0} }
},
{
{ {DHT2X, 0, 92}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {DHT2X, 0, 92}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {DHT2X, 0, 92}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {DHT2X, 0, 92}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {DHT2X, 0, 92}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {DHT2X, 0, 92}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {DHT2X, 0, 92}, {EMPTY, 0, 0}, {EMPTY, 0, 0} },
{ {DHT2X, 0, 92}, {EMPTY, 0, 0}, {EMPTY, 0, 0} }
}
};
void setup() {
Serial.begin(115200);
}
void loop() {
for (uint8_t m = 0; m < 4; m++) {
for (uint8_t b = 0; b < 8; b++) {
for (uint8_t n = 0; n < 3; n++) {
for (uint8_t i = 0; i < 3; i++) {
Serial.print(sensor[m][b][n][i]);
Serial.print(", ");
delay (50);
}
Serial.print("\t");
delay (50);
}
Serial.println();
delay (50);
}
}
delay (5000);
}
