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LibDriver UVIS25
The UVIS25 is a digital UV index sensor able to provide an accurate measurement of the ultraviolet radiation index (UVI) from sunlight. It includes a sensing element and a mixed signal ASIC to provide the UV index data through I2C and SPI interfaces.A dedicated technology has been developed to achieve the greatest accuracy for UV index measurements. The UVIS25 allows the measurement of the UV index, without the need for a dedicated algorithm to calculate the UV index and without specific calibrations at the customer manufacturing line. The device can be configured to generate interrupt events based on a threshold crossing or when a new set of data is generated. The event is available in a register as well as on a dedicated pin. The UVIS25 is available in a full-mold LGA package (LGA). It is guaranteed to operate over a temperature range extending from -20 °C to +85 °C. The package is transparent to allow external solar radiation to reach the sensing element.
LibDriver UVIS25 is the full function driver of UVIS25 launched by LibDriver.It provides continuous reading of UV index, single reading of UV index, interruption of UV index threshold and other functions. LibDriver is MISRA compliant.
Table of Contents
Instruction
/src includes LibDriver UVIS25 source files.
/interface includes LibDriver UVIS25 IIC and SPI platform independent template。
/test includes LibDriver UVIS25 driver test code and this code can test the chip necessary function simply。
/example includes LibDriver UVIS25 sample code.
/doc includes LibDriver UVIS25 offline document.
/datasheet includes UVIS25 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.
Install
Reference /interface IIC and SPI platform independent template and finish your platform IIC and SPI driver.
Add /src, /interface and /example to your project.
Usage
example basic
uint8_t res;
uint32_t i;
float uv;
res = uvis25_basic_init(UVIS25_INTERFACE_IIC);
if (res != 0)
{
return 1;
}
...
for (i = 0; i < 3; i++)
{
uvis25_interface_delay_ms(2000);
res = uvis25_basic_read((float *)&uv);
if (res != 0)
{
(void)uvis25_basic_deinit();
return 1;
}
uvis25_interface_debug_print("uvis25: uv is %0.4f.\n", uv);
...
}
...
(void)uvis25_basic_deinit();
return 0;example shot
uint8_t res;
uint8_t i;
float uv;
res = uvis25_shot_init(UVIS25_INTERFACE_IIC);
if (res != 0)
{
return 1;
}
...
for (i=0; i<times; i++)
{
uvis25_interface_delay_ms(2000);
res = uvis25_shot_read((float *)&uv);
if (res != 0)
{
(void)uvis25_shot_deinit();
return 1;
}
uvis25_interface_debug_print("uvis25: uv is %0.4f.\n", uv);
...
}
...
(void)uvis25_shot_deinit();
return 0;example interrupt
uint8_t res;
uint8_t i;
float uv;
uint8_t g_flag;
void gpio_irq(void)
{
g_flag = 1;
}
res = gpio_interrupt_init();
if (res != 0)
{
return 1;
}
res = uvis25_interrupt_init(UVIS25_INTERFACE_IIC, UVIS25_INTERRUPT_TYPE_UV_INDEX_HIGH_LOW, 1.2f);
if (res != 0)
{
(void)gpio_interrupt_deinit();
return 1;
}
...
g_flag = 0;
for (i = 0; i < 3; i++)
{
uvis25_interface_delay_ms(2000);
res = uvis25_interrupt_read((float *)&uv);
if (res != 0)
{
(void)uvis25_interrupt_deinit();
(void)gpio_interrupt_deinit();
return 1;
}
uvis25_interface_debug_print("uvis25: uv is %0.4f.\n", uv);
....
if (g_flag != 0)
{
uvis25_interface_debug_print("uvis25: find interrupt.\n");
break;
}
...
}
...
(void)uvis25_interrupt_deinit();
(void)gpio_interrupt_deinit();;
return 0;Document
Online documents: https://www.libdriver.com/docs/uvis25/index.html
Offline documents: /doc/html/index.html
Contributing
Please sent an e-mail to [email protected]
License
Copyright (c) 2015 - present LibDriver All rights reserved
The MIT License (MIT)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
Contact Us
Please sent an e-mail to [email protected]