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VEML7700 is a high accuracy ambient light digital 16-bit resolution sensor in a miniature transparent 6.8 mm x 2.35 mm x 3.0 mm package. It includes a high sensitive photo diode, a low noise amplifier, a 16-bit A/D converter and supports an easy to use I2C bus communication interface.
LibDriver VEML7700 is a full-featured driver for VEML7700, launched by LibDriver.It provides data reading, interrupt threshold, auto range and additional features. LibDriver is MISRA compliant.
/src includes LibDriver VEML7700 source files.
/interface includes LibDriver VEML7700 IIC platform independent template.
/test includes LibDriver VEML7700 driver test code and this code can test the chip necessary function simply.
/example includes LibDriver VEML7700 sample code.
/doc includes LibDriver VEML7700 offline document.
/datasheet includes VEML7700 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_veml7700_basic.h"
uint8_t res;
uint32_t i;
veml7700_bool_t auto_range = VEML7700_BOOL_ENABLE;
/* basic init */
res = veml7700_basic_init(auto_range);
if (res != 0)
{
return 1;
}
/* delay 1000ms */
veml7700_interface_delay_ms(1000);
...
/* loop */
for (i = 0; i < 3; i++)
{
uint16_t raw;
double lux;
/* basic read */
res = veml7700_basic_read(&lux);
if (res != 0)
{
(void)veml7700_basic_deinit();
return 1;
}
/* basic read white */
res = veml7700_basic_read_white(&raw);
if (res != 0)
{
(void)veml7700_basic_deinit();
return 1;
}
/* output */
veml7700_interface_debug_print("%d/%d.\n", i + 1, 3);
veml7700_interface_debug_print("%.2f lux.\n", lux);
veml7700_interface_debug_print("%d white raw.\n", raw);
/* delay 1000ms */
veml7700_interface_delay_ms(1000);
...
}
...
/* deinit */
veml7700_basic_deinit();
return 0;#include "driver_veml7700_interrupt.h"
uint8_t res;
uint32_t i;
uint16_t low_threshold = 1000;
uint16_t high_threshold = 3000;
/* interrupt init */
res = veml7700_interrupt_init(low_threshold, high_threshold);
if (res != 0)
{
return 1;
}
/* 1000ms */
veml7700_interface_delay_ms(1000);
....
/* loop */
for (i = 0; i < 3; i++)
{
uint16_t raw;
veml7700_bool_t low_bool;
veml7700_bool_t high_bool;
double lux;
/* get interrupt status */
res = veml7700_interrupt_get_interrupt_status(&low_bool, &high_bool);
if (res != 0)
{
veml7700_interface_debug_print("veml7700: get interrupt status failed.\n");
(void)veml7700_interrupt_deinit();
return 1;
}
if (low_bool == VEML7700_BOOL_ENABLE)
{
veml7700_interface_debug_print("veml7700: find low threshold interrupt.\n");
}
if (high_bool == VEML7700_BOOL_ENABLE)
{
veml7700_interface_debug_print("veml7700: find high threshold interrupt.\n");
}
/* interrupt read */
res = veml7700_interrupt_read(&lux);
if (res != 0)
{
(void)veml7700_interrupt_deinit();
return 1;
}
/* interrupt read white */
res = veml7700_interrupt_read_white(&raw);
if (res != 0)
{
(void)veml7700_interrupt_deinit();
return 1;
}
/* output */
veml7700_interface_debug_print("%d/%d.\n", i + 1, 3);
veml7700_interface_debug_print("%.2f lux.\n", lux);
veml7700_interface_debug_print("%d white raw.\n", raw);
/* delay 1000ms */
veml7700_interface_delay_ms(1000);
...
}
...
/* deinit */
veml7700_interrupt_deinit();
return 0;Online documents: https://www.libdriver.com/docs/veml7700/index.html.
Offline documents: /doc/html/index.html.
Please refer to CONTRIBUTING.md.
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