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| # About | ||
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| This is a manual test application for the CCS811 driver. It shows how the | ||
| sensor can be used for periodic polling as well as with interrupts. | ||
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| # Usage | ||
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| The test application demonstrates the use of the CCS811. It uses the default | ||
| configuration parameters, that is, the measurement mode | ||
| ```CCS811_MODE_1S``` with one measurement per second. | ||
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| The application can use both approaches to wait for new data: | ||
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| 1. using the data-ready interrupt (```CCS811_INT_DATA_READY```): | ||
| ``` | ||
| #define USE_CSS811_DATA_READY_INT (1) | ||
| ``` | ||
| The test application demonstrates the use of the CCS811 using | ||
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| 2. using the data-ready status function (```ccs811_data_ready```) | ||
| ``` | ||
| #define USE_CSS811_DATA_READY_INT (0) | ||
| ``` | ||
| - data-ready status function ```ccs811_data_ready``` to wait for new data and | ||
| - default configuration parameters, that is, the measurement mode | ||
| ```CCS811_MODE_1S``` with one measurement per second. | ||
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| If data-ready interrupts are used, the default configuration parameter for the | ||
| interrupt pin can be overriden by ```CCS811_PARAM_INT_PIN``` before | ||
| ```ccs811_params.h``` is included. | ||
| ``` | ||
| #define CCS811_PARAM_INT_PIN (GPIO_PIN(0, 12)) | ||
| ``` | ||
| Please refer ```$(RIOTBASE)/tests/driver_ccs811_full``` to learn how | ||
| to use the CCS811 with interrupts. |
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| include ../Makefile.tests_common | ||
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| USEMODULE += ccs811_full | ||
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| include $(RIOTBASE)/Makefile.include |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,24 @@ | ||
| # About | ||
|
|
||
| This is a manual test application for the CCS811 driver. It shows how the | ||
| sensor can be used for periodic polling as well as with interrupts. | ||
|
|
||
| # Usage | ||
|
|
||
| The test application demonstrates the use of the CCS811 and pseudomodule | ||
| ```ccs811_full``` using | ||
|
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| - data-ready interrupt ```CCS811_INT_DATA_READY``` and | ||
| - default configuration parameters, that is, the measurement mode | ||
| ```CCS811_MODE_1S``` with one measurement per second. | ||
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| The default configuration parameter for the interrupt pin has to be | ||
| overridden according to the hardware configuration by defining | ||
| ```CCS811_PARAM_INT_PIN``` before ```ccs811_params.h``` is included, e.g., | ||
| ``` | ||
| #define CCS811_PARAM_INT_PIN (GPIO_PIN(0, 7)) | ||
| ``` | ||
| or via the CFLAGS variable in the make command. | ||
| ``` | ||
| CFLAGS="-DCCS811_PARAM_INT_PIN=\(GPIO_PIN\(0,7\)\)" make -C tests/driver_ccs811 BOARD=... | ||
| ``` |
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| /* | ||
| * Copyright (C) 2018 Gunar Schorcht | ||
| * | ||
| * This file is subject to the terms and conditions of the GNU Lesser | ||
| * General Public License v2.1. See the file LICENSE in the top level | ||
| * directory for more details. | ||
| */ | ||
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| /** | ||
| * @ingroup tests | ||
| * @brief Test application for the AMS CCS811 device driver | ||
| * @author Gunar Schorcht <gunar@schorcht.net> | ||
| * @file | ||
| * | ||
| * The test application demonstrates the use of the CCS811 and pseudomodule | ||
| * ```ccs811_full``` using | ||
| * | ||
| * - data-ready interrupt ```CCS811_INT_DATA_READY``` and | ||
| * - default configuration parameters, that is, the measurement mode | ||
| * ```CCS811_MODE_1S``` with one measurement per second. | ||
| * | ||
| * The default configuration parameter for the interrupt pin has to be | ||
| * overridden according to the hardware configuration by defining | ||
| * ```CCS811_PARAM_INT_PIN``` before ```ccs811_params.h``` is included, e.g., | ||
| * ``` | ||
| * #define CCS811_PARAM_INT_PIN (GPIO_PIN(0, 7)) | ||
| * ``` | ||
| * or via the CFLAGS variable in the make command. | ||
| * ``` | ||
| * CFLAGS="-DCCS811_PARAM_INT_PIN=\(GPIO_PIN\(0,7\)\)" make -C tests/driver_ccs811 BOARD=... | ||
| * ``` | ||
| */ | ||
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| #include <stdio.h> | ||
| #include <string.h> | ||
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| #include "thread.h" | ||
| #include "xtimer.h" | ||
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| #include "ccs811.h" | ||
| #include "ccs811_params.h" | ||
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| kernel_pid_t p_main; | ||
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| static void ccs811_isr (void *arg) | ||
| { | ||
| /* send a message to trigger main thread to handle the interrupt */ | ||
| msg_t msg; | ||
| msg_send(&msg, p_main); | ||
| } | ||
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| int main(void) | ||
| { | ||
| ccs811_t sensor; | ||
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| puts("CCS811 test application\n"); | ||
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| printf("+------------Initializing------------+\n"); | ||
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| /* initialize the sensor with default configuration parameters */ | ||
| if (ccs811_init (&sensor, &ccs811_params[0]) != CCS811_OK) { | ||
| puts("Initialization failed\n"); | ||
| return 1; | ||
| } | ||
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| /* initialize the interrupt pin */ | ||
| gpio_init_int (ccs811_params[0].int_pin, GPIO_IN, GPIO_FALLING, | ||
| ccs811_isr, 0); | ||
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| /* activate data ready interrupt */ | ||
| if (ccs811_set_int_mode (&sensor, CCS811_INT_DATA_READY) != CCS811_OK) { | ||
| puts("Activating interrupt failed\n"); | ||
| return 1; | ||
| } | ||
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| /* save the pid of main thread */ | ||
| p_main = sched_active_pid; | ||
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| printf("\n+--------Starting Measurements--------+\n"); | ||
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| while (1) { | ||
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| uint16_t tvoc; | ||
| uint16_t eco2; | ||
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| /* wait for data ready interrupt */ | ||
| msg_t msg; | ||
| msg_receive(&msg); | ||
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| /* read the data */ | ||
| if (ccs811_read_iaq(&sensor, &tvoc, &eco2, 0, 0) != CCS811_OK) { | ||
| /* print values */ | ||
| printf("TVOC [ppb]: %d\neCO2 [ppm]: %d\n", tvoc, eco2); | ||
| puts("+-------------------------------------+"); | ||
| } | ||
| else { | ||
| printf("Could not read data from sensor\n"); | ||
| } | ||
| } | ||
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| return 0; | ||
| } |