tests: add zephyr adc driver api test case

the commit test below adc driver api with different resolutions
and modes
    adc_enable()
    adc_read()
    adc_disable()

move original adc test to adc_simple folder

Change-Id: I016b5e67a5d89fc8d5ae76f33799e5d3eb3e1cf8
Signed-off-by: jing wang <[email protected]>

Author: jwang11

tests/drivers/adc/adc_api/Makefile

@@ -0,0 +1,4 @@
+BOARD ?= quark_se_c1000_ss_devboard
+CONF_FILE ?= prj_resolution_6.conf
+
+include ${ZEPHYR_BASE}/Makefile.test

tests/drivers/adc/adc_api/README

@@ -0,0 +1,15 @@
+This is the test app which test ADC on Quark SE processor.
+
+Default ADC mode is interrupt mode.
+The case tests ADC working in different resolutions.
+
+The analog input pin and channel number mapping
+for Quark Se Devboard.
+A0 Channel 10
+A1 Channel 11
+A2 Channel 12
+A3 Channel 13
+A4 Channel 14
+
+This test uses channel 10 to sample the voltage of VCC3.3.
+So connect A0 to VCC3.3 and start the APP.

tests/drivers/adc/adc_api/prj_poll_mode.conf

@@ -0,0 +1,3 @@
+CONFIG_ADC=y
+CONFIG_ZTEST=y
+CONFIG_ADC_QMSI_POLL=y

tests/drivers/adc/adc_api/prj_resolution_10.conf

@@ -0,0 +1,3 @@
+CONFIG_ADC=y
+CONFIG_ZTEST=y
+CONFIG_ADC_QMSI_SAMPLE_WIDTH=9

tests/drivers/adc/adc_api/prj_resolution_12.conf

@@ -0,0 +1,3 @@
+CONFIG_ADC=y
+CONFIG_ZTEST=y
+CONFIG_ADC_QMSI_SAMPLE_WIDTH=11

tests/drivers/adc/adc_api/prj_resolution_6.conf

@@ -0,0 +1,3 @@
+CONFIG_ADC=y
+CONFIG_ZTEST=y
+CONFIG_ADC_QMSI_SAMPLE_WIDTH=5

tests/drivers/adc/adc_api/prj_resolution_8.conf

@@ -0,0 +1,3 @@
+CONFIG_ADC=y
+CONFIG_ZTEST=y
+CONFIG_ADC_QMSI_SAMPLE_WIDTH=7

tests/drivers/adc/adc_api/src/Makefile

@@ -0,0 +1,3 @@
+include $(ZEPHYR_BASE)/tests/Makefile.test
+
+obj-y = main.o test_adc.o

tests/drivers/adc/adc_api/src/main.c

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @addtogroup t_driver_adc
+ * @{
+ * @defgroup t_adc_basic test_adc_basic_operations
+ * @}
+ */
+
+extern void test_adc_sample(void);
+
+#include <zephyr.h>
+#include <ztest.h>
+
+void test_main(void)
+{
+	ztest_test_suite(adc_basic_test,
+			 ztest_unit_test(test_adc_sample));
+	ztest_run_test_suite(adc_basic_test);
+}

tests/drivers/adc/adc_api/src/test_adc.c

@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/*
+ * @addtogroup test_adc_basic_operations
+ * @{
+ * @defgroup t_adc_basic_basic_operations test_adc_sample
+ * @brief TestPurpose: verify ADC works well with different resolutions
+ *			and sample mode
+ * @details
+ * - Test Steps
+ *   -# Connect A0 to VCC3.3.
+ *   -# Prepare ADC sequence table.
+ *   -# Bind ADC device.
+ *   -# Enable ADC device.
+ *   -# Call adc_read() to fetch ADC sample.
+ *   -# Dump the sample results.
+ * - Expected Results
+ *   -# ADC will return the sample result for VCC3.3. Different resolutions
+ *      will all return almost the biggest value in each sample width.
+ * @}
+ */
+
+#include <adc.h>
+#include <zephyr.h>
+#include <ztest.h>
+
+#define ADC_DEV_NAME CONFIG_ADC_0_NAME
+#define BUFFER_SIZE 5
+
+static uint16_t seq_buffer[BUFFER_SIZE];
+
+static struct adc_seq_entry entry = {
+	.sampling_delay = 30,
+	.channel_id = 10,
+	.buffer = (void *)seq_buffer,
+	.buffer_length = BUFFER_SIZE * sizeof(seq_buffer[0])
+};
+
+static struct adc_seq_table table = {
+	.entries = &entry,
+	.num_entries = 1,
+};
+
+static int test_task(void)
+{
+	int i;
+	int ret;
+	struct device *adc_dev = device_get_binding(ADC_DEV_NAME);
+
+	if (!adc_dev) {
+		TC_PRINT("Cannot get ADC device\n");
+		return TC_FAIL;
+	}
+
+	/* 1. Verify adc_enable() */
+	adc_enable(adc_dev);
+
+	k_sleep(500);
+
+	/* 2. Verify adc_read() */
+	ret = adc_read(adc_dev, &table);
+	if (ret != 0) {
+		TC_PRINT("Failed to fetch sample data from ADC controller\n");
+		return TC_FAIL;
+	}
+
+	TC_PRINT("Channel 10 ADC Sample: ");
+	for (i = 0; i < BUFFER_SIZE; i++) {
+		TC_PRINT("%d ", seq_buffer[i]);
+	}
+	TC_PRINT("\n");
+
+	/* 3. Verify adc_disable() */
+	adc_disable(adc_dev);
+
+	return TC_PASS;
+}
+
+void test_adc_sample(void)
+{
+	assert_true(test_task() == TC_PASS, NULL);
+}