I²C Address Space
This article provides an overview of the 7-bit address allocation on the I²C bus.
To check all the I²C addresses of sensors on your CHESTER, you can use the I²C scan shell command.
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Typically, you will not need to search for the I²C addresses while working with the CHESTER SDK. Everything is pre-defined in the DeviceTree specifications. However, you will need to check for the potential collision if you need to integrate a new I²C peripheral.
Allocation Table
| Block | Address | Device | Remark |
|---|---|---|---|
| CHESTER-Z1 | 0x10 | STM32L0 | |
| CHESTER-S1 | 0x11 | STM32L0 | |
| CHESTER-M | 0x18 | DS2484 | |
| CHESTER-M | 0x19 | LIS2DH12 | |
| CHESTER-X8 | 0x1d | ADXL355 | |
| CHESTER-C5 | 0x1e | DS2482S-800+ | |
| CHESTER-X0 | 0x20 | PCAL6416A | Address in slot A |
| CHESTER-X0 | 0x21 | PCAL6416A | Address in slot B |
| CHESTER-Z1 | 0x32 | LP55231SQ | |
| CHESTER-Z1 | 0x33 | LP55231SQ | |
| CHESTER-S1 | 0x33 | MLX90640 | |
| CHESTER-R1 | 0x38 | TCA9534A | |
| CHESTER-X6 | 0x39 | TCA9534A | |
| CHESTER-A | 0x3a | TCA9534A | |
| CHESTER-G | 0x3b | TCA9534A | |
| CHESTER-G | 0x3c | TCA9534A | |
| CHESTER-S1 | 0x3c | TCA9534A | |
| CHESTER-K1 | 0x3d | TCA9534A | |
| CHESTER-S1 | 0x3d | TCA9534A | |
| CHESTER-C1 | 0x3e | TCA9534A | |
| CHESTER-B1 | 0x3e | TCA9534A | |
| CHESTER-C5 | 0x3e | TCA9534A | |
| CHESTER-B1 | 0x3f | TCA9534A | |
| CHESTER-X5 | 0x40 | ADS122C04 | Address in slot A |
| CHESTER-X5 | 0x41 | ADS122C04 | Address in slot B |
| CHESTER-M | 0x42 | CAM-M8Q | |
| CHESTER-M | 0x44 | SHT30 | Not populated by default |
| CHESTER-S1 | 0x44 | SHT40-AD1B | |
| CHESTER-S2 | 0x45 | SHT30 | External sensor |
| CHESTER-G1 | 0x45 | OPT3001 | |
| CHESTER-X3 | 0x46 | ADS122C04 - CH1 | Address in slot A |
| CHESTER-X3 | 0x47 | ADS122C04 - CH2 | Address in slot A |
| CHESTER-M | 0x48 | TMP112 | |
| CHESTER-X4 | 0x49 | TLA2021 | |
| CHESTER-X10 | 0x49 | TLA2024 | |
| CHESTER-X12 | 0x49 | TLA2021 | |
| CHESTER-X99 | 0x49 | TLA2021 | |
| CHESTER-C5 | 0x49 | TLA2024 | |
| CHESTER-C6 | 0x49 | TLA2021 | |
| CHESTER-X3 | 0x4a | ADS122C04 - CH1 | Address in slot B |
| CHESTER-M | 0x4b | TLA2021 | |
| CHESTER-V1 | 0x4c | SC16IS740 | |
| CHESTER-X6 | 0x4d | SC16IS740 | |
| CHESTER-B1 | 0x4e | SC16IS740 | |
| CHESTER-X3 | 0x4f | ADS122C04 - CH2 | Address in slot B |
| CHESTER-X2 | 0x50 | SC16IS740 | Address in slot A |
| CHESTER-X2 | 0x51 | SC16IS740 | Address in slot B |
| CHESTER-X12 | 0x54 | SC16IS740IPW | |
| CHESTER-X12 | 0x55 | SC16IS740IPW | |
| CHESTER-S1 | 0x60 | MPL3115A2 | |
| CHESTER-M | 0x64 | ATSHA204A | Removed in CHESTER-M R3.3 |
| CHESTER-S1 | 0x68 | SENSEAIR-SUNRISE | |
| People Counter | 0x7f | People Counter | Proprietary module of Adastra Labs |