| /* |
| * Copyright (c) 2020 Laird Connectivity |
| * Copyright (c) 2019 Electronut Labs |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #ifndef _SI7055_H |
| #define _SI7055_H |
| |
| /* Si7055 register addresses */ |
| #define SI7055_MEAS_TEMP_MASTER_MODE 0xE3 |
| #define SI7055_MEAS_TEMP_NO_MASTER_MODE 0xF3 |
| #define SI7055_RESET 0xFE |
| #define SI7055_READ_ID_LOW_0 0xFA |
| #define SI7055_READ_ID_LOW_1 0x0F |
| #define SI7055_READ_ID_HIGH_0 0xFC |
| #define SI7055_READ_ID_HIGH_1 0xC9 |
| #define SI7055_FIRMWARE_0 0x84 |
| #define SI7055_FIRMWARE_1 0xB8 |
| /* Si7055 temperature conversion factors and constants */ |
| #define SI7055_CONV_FACTOR_1 17572 |
| #define SI7055_CONV_FACTOR_2 4685 |
| #define SI7055_MULTIPLIER 10000 |
| #define SI7055_DIVIDER 1000000 |
| /* Si7055 buffer sizes and locations */ |
| #define SI7055_TEMPERATURE_READ_NO_CHECKSUM_SIZE 0x02 |
| #define SI7055_TEMPERATURE_READ_WITH_CHECKSUM_SIZE 0x03 |
| #define SI7055_TEMPERATURE_DATA_BYTE_0 0x0 |
| #define SI7055_TEMPERATURE_DATA_BYTE_1 0x1 |
| /* Si7055 Checksum constants */ |
| #define SI7055_CRC_POLY 0x31 |
| #define SI7055_CRC_SIZE sizeof(uint8_t) |
| #define SI7055_CRC_INIT 0x0 |
| #define SI7055_DATA_SIZE (sizeof(uint8_t) * 2) |
| |
| #endif /* _SI7055_H */ |
