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The STTS22H is an ultralow-power, high-accuracy, digital temperature sensor offering high performance over the entire operating temperature range. The STTS22H is a bandgap temperature sensor coupled with an A/D converter, signal processing logic, and an I²C/SMBus 3.0 interface all in a single ASIC. This sensor is housed in a small 2 x 2 x 0.50 mm 6-lead UDFN package with exposed pad down for a better temperature match with the surrounding environment. The STTS22H is factory calibrated and requires no additional calibration efforts on the customer side.
LibDriver STTS22H is a full-featured driver for STTS22H, launched by LibDriver.It provides continuous reading, single reading and additional features. LibDriver is MISRA compliant.
/src includes LibDriver STTS22H source files.
/interface includes LibDriver STTS22H IIC platform independent template.
/test includes LibDriver STTS22H driver test code and this code can test the chip necessary function simply.
/example includes LibDriver STTS22H sample code.
/doc includes LibDriver STTS22H offline document.
/datasheet includes STTS22H datasheet.
/project includes the common Linux and MCU development board sample code. All projects use the shell script to debug the driver and the detail instruction can be found in each project's README.md.
/misra includes the LibDriver MISRA code scanning results.
Reference /interface IIC platform independent template and finish your platform IIC driver.
Add the /src directory, the interface driver for your platform, and your own drivers to your project, if you want to use the default example drivers, add the /example directory to your project.
You can refer to the examples in the /example directory to complete your own driver. If you want to use the default programming examples, here's how to use them.
#include "driver_stts22h_basic.h"
uint8_t res;
uint32_t i;
float celsius_deg;
/* basic init */
res = stts22h_basic_init(STTS22H_ADDRESS_GND);
if (res != 0)
{
return 1;
}
...
/* loop */
for (i = 0; i < 3; i++)
{
/* delay 1000ms */
stts22h_interface_delay_ms(1000);
/* read data */
res = stts22h_basic_read(&celsius_deg);
if (res != 0)
{
(void)stts22h_basic_deinit();
return 1;
}
/* output */
stts22h_interface_debug_print("%d/%d\n", (uint32_t)(i + 1), (uint32_t)3);
stts22h_interface_debug_print("temperature is %0.2fC.\n", celsius_deg);
...
}
...
/* deinit */
(void)stts22h_basic_deinit();
return 0;#include "driver_stts22h_shot.h"
uint8_t res;
uint32_t i;
float celsius_deg;
/* shot init */
res = stts22h_shot_init(STTS22H_ADDRESS_GND);
if (res != 0)
{
return 1;
}
...
/* loop */
for (i = 0; i < 3; i++)
{
/* delay 1000ms */
stts22h_interface_delay_ms(1000);
/* read data */
res = stts22h_shot_read(&celsius_deg);
if (res != 0)
{
(void)stts22h_shot_deinit();
return 1;
}
/* output */
stts22h_interface_debug_print("%d/%d\n", (uint32_t)(i + 1), (uint32_t)3);
stts22h_interface_debug_print("temperature is %0.2fC.\n", celsius_deg);
...
}
...
/* deinit */
(void)stts22h_shot_deinit();
return 0;#include "driver_stts22h_interrupt.h"
uint8_t res;
float low = 20.0f;
float high = 30.0f;
volatile uint8_t gs_flag;
uint8_t (*g_gpio_irq)(void) = NULL;
static void a_receive_callback(uint8_t type)
{
switch (type)
{
case STTS22H_STATUS_UNDER_LOW_LIMIT :
{
float celsius_deg = 0.0f;
stts22h_interface_debug_print("stts22h: irq under low limit.\n");
(void)stts22h_interrupt_read(&celsius_deg);
stts22h_interface_debug_print("stts22h: temperature is %0.2fC.\n", celsius_deg);
gs_flag = 1;
break;
}
case STTS22H_STATUS_OVER_HIGH_LIMIT :
{
float celsius_deg = 0.0f;
stts22h_interface_debug_print("stts22h: irq over high limit.\n");
(void)stts22h_interrupt_read(&celsius_deg);
stts22h_interface_debug_print("stts22h: temperature is %0.2fC.\n", celsius_deg);
gs_flag = 1;
break;
}
default :
{
stts22h_interface_debug_print("stts22h: unknown code.\n");
break;
}
}
}
/* gpio interrupt init */
g_gpio_irq = stts22h_interrupt_irq_handler;
res = gpio_interrupt_init();
if (res != 0)
{
return 1;
}
...
/* interrupt init */
res = stts22h_interrupt_init(STTS22H_ADDRESS_GND, low, high, a_receive_callback);
if (res != 0)
{
(void)gpio_interrupt_deinit();
g_gpio_irq = NULL;
return 1;
}
...
/* wait for interrupt */
gs_flag = 0;
while (gs_flag == 0)
{
....
}
stts22h_interface_debug_print("stts22h: find interrupt.\n");
...
/* gpio interrupt deinit */
(void)gpio_interrupt_deinit();
g_gpio_irq = NULL;
return 0;Online documents: https://www.libdriver.com/docs/stts22h/index.html.
Offline documents: /doc/html/index.html.
Please refer to CONTRIBUTING.md.
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