Thermistor (thermistor)
Thermistor (Temperature Sensor)

Overview

This library provides functions for reading a thermistor temperature sensor as used on some shields.

Quick Start

  1. Create an empty PSoC™ 6 application
  2. Add this library to the application
  3. Add retarget-io library using Library Manager
  4. Place following code in the main.c file:
  5. Note: CY8CKIT_028_EPD_ items are all defined in the CY8CKIT-028-EPD library. If you are using different hardware, pick appropriate values to substitute for your hardware.
    #include "cy_pdl.h"
    #include "cyhal.h"
    #include "cybsp.h"
    #include "cy_retarget_io.h"
    #include "cy8ckit_028_epd.h"
    cyhal_adc_t adc;
    mtb_thermistor_ntc_gpio_t thermistor;
    mtb_thermistor_ntc_gpio_cfg_t thermistor_cfg = {
    .r_ref = CY8CKIT_028_EPD_THERM_R_REF,
    .b_const = CY8CKIT_028_EPD_THERM_B_CONST,
    .r_infinity = CY8CKIT_028_EPD_THERM_R_INFINITY,
    };
    int main(void)
    {
    cy_rslt_t result;
    /* Initialize the device and board peripherals */
    result = cybsp_init();
    CY_ASSERT(result == CY_RSLT_SUCCESS);
    __enable_irq();
    /* Initialize retarget-io to use the debug UART port */
    result = cy_retarget_io_init(CYBSP_DEBUG_UART_TX, CYBSP_DEBUG_UART_RX, CY_RETARGET_IO_BAUDRATE);
    CY_ASSERT(result == CY_RSLT_SUCCESS);
    /* Intialize adc */
    result = cyhal_adc_init(&adc, CY8CKIT_028_EPD_PIN_THERM_OUT1, NULL);
    /* Initialize thermistor */
    result = mtb_thermistor_ntc_gpio_init(&thermistor, &adc,
    CY8CKIT_028_EPD_PIN_THERM_GND, CY8CKIT_028_EPD_PIN_THERM_VDD, CY8CKIT_028_EPD_PIN_THERM_OUT1,
    &thermistor_cfg, MTB_THERMISTOR_NTC_WIRING_VIN_R_NTC_GND);
    CY_ASSERT(result == CY_RSLT_SUCCESS);
    for (;;)
    {
    /* Measure the temperature and send the value via UART */
    printf("Temperature = %fC\n\r", mtb_thermistor_ntc_gpio_get_temp(&thermistor));
    cyhal_system_delay_ms(1000);
    }
    }
  6. Build the application and program the kit.

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