tests/driver_sgp30: initial import

tests/driver_sgp30/Makefile

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+include ../Makefile.tests_common
+
+USEMODULE += sgp30
+
+# DISABLE_MODULE += sgp30_strict
+
+include $(RIOTBASE)/Makefile.include

tests/driver_sgp30/README.md

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+driver_sgp30
+============
+
+This is a manual test application for the SGP30 driver. It shows how the
+sensor can be used for periodic polling.
+
+Usage
+=====
+
+The test application demonstrates the use of the SGP30. By default the
+`sgp30_strict` module is used, which means that periodic readings are
+issued every 1s, and a warm-up period of 15s is enforced, before this
+`sgp30_read_measurements` returns with `-EAGAIN`.
+
+`sgp30_strict` can be disabled by compiling with `DISABLE_MODULE=sgp30_strict`.
+With this when `sgp30_read_measurements` is called during the first 15s
+constant values of 400ppm CO2eq and 0ppb TVOC.

tests/driver_sgp30/app.config.test

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+# this file enables modules defined in Kconfig. Do not use this file for
+# application configuration. This is only needed during migration.
+CONFIG_MODULE_SGP30=y

tests/driver_sgp30/main.c

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+/*
+ * Copyright (C) 2021 Inria
+ *
+ * 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.
+ */
+
+/**
+ * @ingroup     tests
+ * @{
+ *
+ * @file
+ * @brief       SGP30 driver test application
+ *
+ * @author      Francisco Molina <francois-xavier.molina@inria.fr>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+
+#include "sgp30.h"
+#include "sgp30_params.h"
+
+#include "ztimer.h"
+
+int main(void)
+{
+    sgp30_t sensor;
+
+    puts("SGP30 test application\n");
+
+    printf("+------------Initializing------------+\n");
+
+    /* initialize the sensor with default configuration parameters */
+    if (sgp30_init(&sensor, &sgp30_params[0]) != 0) {
+        puts("Initialization failed\n");
+        return 1;
+    }
+
+    printf("\n+--------Starting Measurements--------+\n");
+
+    while (1) {
+        sgp30_data_t data;
+
+        /* read the data and print them on success */
+        int ret = sgp30_read_measurements(&sensor, &data);
+        if (ret == 0) {
+            printf("TVOC [ppb]: %d\neCO2 [ppm]: %d\n", data.tvoc, data.eco2);
+            puts("+-------------------------------------+");
+        }
+        else if (ret == -EAGAIN) {
+            printf("Device is not yet ready\n");
+        }
+        else {
+            printf("Could not read data from sensor\n");
+        }
+        ztimer_sleep(ZTIMER_USEC, 100000LU);
+    }
+
+    return 0;
+}