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The TSL2560 and TSL2561 are light-to-digital converters that transform light intensity to a digital signal output capable of direct IIC (TSL2561) or SMBus (TSL2560) interface. Each device combines one broadband photodiode (visible plus infrared) and one infrared-responding photodiode on a single CMOS integrated circuit capable of providing a near-photopic response over an effective 20-bit dynamic range (16-bit resolution). Two integrating ADCs convert the photodiode currents to a digital output that represents the irradiance measured on each channel. This digital output can be input to a microprocessor where illuminance (ambient light level) in lux is derived using an empirical formula to approximate the human eye response. The TSL2560 device permits an SMB-Alert style interrupt, and the TSL2561 device supports a traditional level style interrupt that remains asserted until the firmware clears it. While useful for general purpose light sensing applications, the TSL2560/61 devices are designed particularly for display panels(LCD, OLED, etc.) with the purpose of extending battery life and providing optimum viewing in diverse lighting conditions. Display panel backlighting, which can account for up to 30 to 40 percent of total platform power, can be automatically managed. Both devices are also ideal for controlling keyboard illumination based upon ambient lighting conditions. Illuminance information can further be used to manage exposure control in digital cameras. The TSL2560/61 devices are ideal in notebook/tablet PCs, LCD monitors, flat-panel televisions, cell phones, and digital cameras. In addition, other applications include street light control, security lighting, sunlight harvesting, machine vision, and automotive instrumentation clusters.
LibDriver TSL2561 is the TSL2561 full function driver launched by LibDriver.It provides brightness reading, brightness interrupt detection and other functions. LibDriver is MISRA compliant.
/src includes LibDriver TSL2561 source files.
/interface includes LibDriver TSL2561 IIC platform independent template.
/test includes LibDriver TSL2561 driver test code and this code can test the chip necessary function simply.
/example includes LibDriver TSL2561 sample code.
/doc includes LibDriver TSL2561 offline document.
/datasheet includes TSL2561 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_tsl2561_basic.h"
uint8_t res;
uint8_t i;
uint32_t lux;
res = tsl2561_basic_init(TSL2561_ADDRESS_FLOAT);
if (res != 0)
{
return 1;
}
...
for (i = 0; i < 3; i++)
{
tsl2561_interface_delay_ms(1000);
res = tsl2561_basic_read((uint32_t *)&lux);
if (res != 0)
{
(void)tsl2561_basic_deinit();
return 1;
}
tsl2561_interface_debug_print("tsl2561: read is %d lux.\n", lux);
...
}
...
(void)tsl2561_basic_deinit();
return 0;#include "driver_tsl2561_interrupt.h"
uint8_t res;
uint8_t i;
uint32_t lux;
uint8_t g_flag;
void gpio_irq(void)
{
g_flag = 1;
}
res = tsl2561_interrupt_init(TSL2561_ADDRESS_FLOAT, TSL2561_INTERRUPT_MODE_EVERY_ADC_CYCLE, 10, 100);
if (res != 0)
{
return 1;
}
res = gpio_interrupt_init();
if (res != 0)
{
(void)tsl2561_interrupt_deinit();
return 1;
}
...
g_flag = 0;
for (i = 0; i < 3; i++)
{
tsl2561_interface_delay_ms(1000);
res = tsl2561_interrupt_read((uint32_t *)&lux);
if (res != 0)
{
(void)tsl2561_interrupt_deinit();
(void)gpio_interrupt_deinit();
return 1;
}
tsl2561_interface_debug_print("tsl2561: %d/%d.\n", (uint32_t)(i+1), (uint32_t)times);
tsl2561_interface_debug_print("tsl2561: read is %d lux.\n", lux);
...
if (g_flag != 0)
{
tsl2561_interface_debug_print("tsl2561: find interrupt.\n");
break;
}
...
}
...
(void)tsl2561_interrupt_deinit();
(void)gpio_interrupt_deinit();
return 0;Online documents: https://www.libdriver.com/docs/tsl2561/index.html.
Offline documents: /doc/html/index.html.
Please refer to CONTRIBUTING.md.
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