AMG8833 Infrared Array Sensor is a thermopile type infrared sensor which detects the amount of infrared rays. Below conditions generally degrade the temperature accuracy.Carefully check the performance and stability under actual use conditions, and perform temperature corrections when necessary.(1) When heating elements exist near the mounting position of the sensor.(2) When the sensor is exposed to cold or hot air.(3) When the temperature of the sensor body rapidly changes. (4) When substances (e.g., glasses, acrylics or steams), which hardly transmit a far infrared ray, exist between the sensor and the detected object.(5) When substances (e.g., foreign substances or water), which hardly transmit a far infrared ray, adhere to the lense of the sensor.AMG8833 can be used in high function home appliances, energy saving at office, digital signage, automatic doors and so on.
LibDriver AMG8833 is a full function driver of AMG8833 launched by LibDriver.It provides temperature reading and temperature array reading functions.
/src includes LibDriver AMG8833 source files.
/interface includes LibDriver AMG8833 IIC platform independent template。
/test includes LibDriver AMG8833 driver test code and this code can test the chip necessary function simply。
/example includes LibDriver AMG8833 sample code.
/doc includes LibDriver AMG8833 offline document.
/datasheet includes AMG8833 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.
Reference /interface IIC platform independent template and finish your platform IIC driver.
Add /src, /interface and /example to your project.
uint32_t i, j, k, times;
uint8_t res;
/* init */
res = amg8833_basic_init(AMG8833_ADDRESS_1);
if (res)
{
return 1;
}
/* delay 1000 ms */
amg8833_interface_delay_ms(1000);
...
times = 3;
for (i = 0; i < times; i++)
{
float temp[8][8];
float tmp;
/* read temperature array */
res = amg8833_basic_read_temperature_array(temp);
if (res)
{
amg8833_interface_debug_print("amg8833: read temperature array failed.\n");
amg8833_basic_deinit();
return 1;
}
else
{
for (j = 0; j < 8; j++)
{
for (k = 0; k < 8; k++)
{
amg8833_interface_debug_print("%0.2f ", temp[j][k]);
}
amg8833_interface_debug_print("\n");
}
}
/* read temperature */
res = amg8833_basic_read_temperature((float *)&tmp);
if (res)
{
amg8833_basic_deinit();
return 1;
}
else
{
amg8833_interface_debug_print("amg8833: temperature is %0.3fC.\n", tmp);
}
/* delay 1000 ms */
amg8833_interface_delay_ms(1000);
....
}
...
amg8833_basic_deinit();uint32_t i, times;
uint8_t res;
uint8_t (*g_gpio_irq)(void) = NULL;
static uint8_t _callback(uint8_t type)
{
switch (type)
{
case AMG8833_STATUS_OVF_THS :
{
amg8833_interface_debug_print("amg8833: irq thermistor temperature output overflow.\n");
break;
}
case AMG8833_STATUS_OVF_IRS :
{
amg8833_interface_debug_print("amg8833: irq temperature output overflow.\n");
break;
}
case AMG8833_STATUS_INTF :
{
volatile uint8_t res;
volatile uint8_t i, j;
volatile uint8_t level;
volatile uint8_t table[8][1];
amg8833_interface_debug_print("amg8833: irq interrupt outbreak.\n");
/* get table */
res = amg8833_interrupt_get_table((uint8_t (*)[1])table);
if (res)
{
return 1;
}
else
{
for (i = 0; i < 8; i++)
{
level = table[i][0];
for (j = 0; j < 8; j++)
{
if ((level >> (7 - j)) & 0x01)
{
amg8833_interface_debug_print("%d ", 1);
}
else
{
amg8833_interface_debug_print("%d ", 0);
}
}
amg8833_interface_debug_print("\n");
}
}
break;
}
default :
{
break;
}
}
return 0;
}
/* run interrupt test */
g_gpio_irq = amg8833_interrupt_irq_handler;
if (gpio_interrupt_init())
{
g_gpio_irq = NULL;
}
times = 3;
...
if (interrupt_interrupt_init(addr,
mode,
32.0f,
25.0f,
28.0f,
_callback))
{
g_gpio_irq = NULL;
gpio_interrupt_deinit();
return 1;
}
...
/* delay 1000 ms */
amg8833_interface_delay_ms(1000);
for (i = 0; i < times; i++)
{
volatile float temp;
res = amg8833_interrupt_read_temperature((float *)&temp);
if (res)
{
amg8833_interrupt_deinit();
g_gpio_irq = NULL;
gpio_interrupt_deinit();
}
else
{
amg8833_interface_debug_print("amg8833: temperature is %0.3fC.\n", temp);
}
/* delay 1000 ms */
amg8833_interface_delay_ms(1000);
...
}
...
/* deinit */
amg8833_interrupt_deinit();
g_gpio_irq = NULL;
gpio_interrupt_deinit();Online documents: https://www.libdriver.com/docs/amg8833/index.html
Offline documents: /doc/html/index.html
Please sent an e-mail to [email protected]
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