1 /* 2 * Copyright (c) 2024 Bittium Corporation 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef ZEPHYR_DRIVERS_SENSOR_TMP435_H_ 8 #define ZEPHYR_DRIVERS_SENSOR_TMP435_H_ 9 10 #define TMP435_CONF_REG_1 0x03 11 #define TMP435_CONF_REG_1_DATA 0xc4 12 /* [7]=1 ALERT Masked, [6]=1 Shut Down (one shot mode), [2]=1 −55 C to +150 C */ 13 #define TMP435_CONF_REG_2 0x1a 14 #define TMP435_CONF_REG_2_REN 0x10 /* [4]=1 External channel 1 enabled */ 15 #define TMP435_CONF_REG_2_RC 0x04 /* [2]=1 Resistance correction enabled */ 16 #define TMP435_CONF_REG_2_DATA 0x08 /* [3]=1 Local channel enabled */ 17 #define TMP435_BETA_RANGE_REG 0x25 18 #define TMP435_STATUS_REG 0x02 19 #define TMP435_STATUS_REG_BUSY 0x80 /* conv not ready */ 20 #define TMP435_SOFTWARE_RESET_REG 0xfc 21 #define TMP435_ONE_SHOT_START_REG 0x0f 22 #define TMP435_LOCAL_TEMP_H_REG 0x00 23 #define TMP435_LOCAL_TEMP_L_REG 0x15 24 #define TMP435_REMOTE_TEMP_H_REG 0x01 25 #define TMP435_REMOTE_TEMP_L_REG 0x10 26 27 #define TMP435_CONV_LOOP_LIMIT 50 /* max 50*10 ms */ 28 #define TMP435_FRACTION_INC 0x80 /* 0.5000 */ 29 30 static const int32_t tmp435_temp_offset = -64; 31 32 struct tmp435_data { 33 int32_t temp_die; /* Celsius degrees */ 34 int32_t temp_ambient; /* Celsius degrees */ 35 }; 36 37 struct tmp435_config { 38 struct i2c_dt_spec i2c; 39 bool external_channel; 40 bool resistance_correction; 41 uint8_t beta_compensation; 42 }; 43 44 #endif /* ZEPHYR_DRIVERS_SENSOR_TMP435_H_ */ 45
