69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
/*
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* This sample code is in the public domain.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "esp/uart.h"
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#include "FreeRTOS.h"
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#include "i2c/i2c.h"
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#include "task.h"
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#include "tsl2561/tsl2561.h"
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/* An example using the TSL2561 light sensor
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* to read and print lux values from a sensor
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* attached to GPIO pin 2 (SCL) and GPIO pin 0 (SDA)
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* Connect 3.3v from the ESP to Vin and GND to GND
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*/
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#define SCL_PIN (2)
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#define SDA_PIN (0)
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void tsl2561MeasurementTask(void *pvParameters)
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{
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tsl2561_t lightSensor;
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// Options:
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// TSL2561_I2C_ADDR_VCC (0x49)
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// TSL2561_I2C_ADDR_GND (0x29)
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// TSL2561_I2C_ADDR_FLOAT (0x39) Default
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lightSensor.i2c_addr = TSL2561_I2C_ADDR_FLOAT;
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tsl2561_init(&lightSensor);
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// Options:
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// TSL2561_INTEGRATION_13MS (0x00)
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// TSL2561_INTEGRATION_101MS (0x01)
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// TSL2561_INTEGRATION_402MS (0x02) Default
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tsl2561_set_integration_time(&lightSensor, TSL2561_INTEGRATION_402MS);
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// Options:
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// TSL2561_GAIN_1X (0x00) Default
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// TSL2561_GAIN_16X (0x10)
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tsl2561_set_gain(&lightSensor, TSL2561_GAIN_1X);
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uint32_t lux = 0;
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while (1)
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{
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if (tsl2561_read_lux(&lightSensor, &lux))
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{
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printf("Lux: %u\n", lux);
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}
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else
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{
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printf("Could not read data from TSL2561\n");
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}
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// 0.1 second delay
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vTaskDelay(100 / portTICK_PERIOD_MS);
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}
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}
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void user_init(void)
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{
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uart_set_baud(0, 115200);
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i2c_init(SCL_PIN, SDA_PIN);
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xTaskCreate(tsl2561MeasurementTask, "tsl2561MeasurementTask", 256, NULL, 2, NULL);
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}
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