Quick Start Guide for the SAM AT30TSE75X Temperature Sensor Driver

In this use case we will interface the temperature sensor, set a resolution and read the temperature.

Prerequisites

The temperature sensor must be connected to the device.

Setup

Initialization Code

Add a global variable to store the temperature:

double temp_res;

Copy-paste the following setup code to your application main function:

    /* Init system. */
    sysclk_init();
    board_init();

    /* Configure device and enable. */
    at30tse_init();

Workflow

1. Initialize system
2. Initialize I2C interface

       at30tse_init();

Implementation

Code

Add after initialization in main.

    /* Read thigh and tlow */
    volatile uint16_t thigh = 0;
    thigh = at30tse_read_register(AT30TSE_THIGH_REG,
            AT30TSE_VOLATILE_REG, AT30TSE_THIGH_REG_SIZE);
    volatile uint16_t tlow = 0;
    tlow = at30tse_read_register(AT30TSE_TLOW_REG,
            AT30TSE_VOLATILE_REG, AT30TSE_TLOW_REG_SIZE);

    /* Set 12-bit resolution mode. */
    at30tse_write_config_register(
            AT30TSE_CONFIG_RES(AT30TSE_CONFIG_RES_12_bit));

    while (1) {
        temp_res = at30tse_read_temperature();
    }

Workflow

1. Read THIGH register from temperature sensor:

       volatile uint16_t thigh = 0;
       thigh = at30tse_read_register(AT30TSE_THIGH_REG,
               AT30TSE_VOLATILE_REG, AT30TSE_THIGH_REG_SIZE);

2. Read TLOW register from temperature sensor:

       volatile uint16_t tlow = 0;
       tlow = at30tse_read_register(AT30TSE_TLOW_REG,
               AT30TSE_VOLATILE_REG, AT30TSE_TLOW_REG_SIZE);

3. Set temperature sensor resolution to 12-bit:

       at30tse_write_config_register(
               AT30TSE_CONFIG_RES(AT30TSE_CONFIG_RES_12_bit));

4. Continuously read the temperature:

       while (1) {
           temp_res = at30tse_read_temperature();
       }