tests: Add PWM driver api test

The commit verify below PWM apis
    pwm_pin_set_cycles()
    pwm_pin_set_usec

test PWM apis under always-on, half-on and alway-off modes

Change-Id: I2251be23ad9c443703dac44e138651a63d2d7211
Signed-off-by: jing wang <jing.j.wang@intel.com>
This commit is contained in:
jing wang 2017-01-10 14:33:38 +08:00 committed by Inaky Perez-Gonzalez
commit ae2cf51591
6 changed files with 163 additions and 0 deletions

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BOARD ?= quark_se_c1000_devboard
CONF_FILE = prj.conf
include ${ZEPHYR_BASE}/Makefile.test

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CONFIG_PWM=y
CONFIG_ZTEST=y

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include $(ZEPHYR_BASE)/tests/Makefile.test
obj-y += main.o test_pwm.o

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/*
* Copyright (c) 2016 Intel Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @addtogroup t_driver_pwm
* @{
* @defgroup t_pwm_basic test_pwm_basic_operations
* @}
*/
#include <zephyr.h>
#include <ztest.h>
extern void test_pwm_usec(void);
extern void test_pwm_cycle(void);
void test_main(void)
{
ztest_test_suite(pwm_basic_test,
ztest_unit_test(test_pwm_usec),
ztest_unit_test(test_pwm_cycle));
ztest_run_test_suite(pwm_basic_test);
}

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/*
* Copyright (c) 2016 Intel Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* @addtogroup test_pwm_basic_operations
* @{
* @defgroup t_pwm_basic_operations test_pwm_sample
* @brief TestPurpose: verify PWM can work well when configure
* through usec or cycle.
* @details
* - Test Steps
* -# Bind PWM port 0.
* -# Set PWM period and pulse using pwm_pin_set_cycles() or
* pwm_pin_set_usec().
* -# Use multimeter or other instruments to measure the output
* from PWM_OUT_0.
* - Expected Results
* -# The output of PWM_OUT_0 will differ according to the value
* of period and pulse.
* Always on -> Period : Pulse (1 : 1) -> 3.3V
* Half on -> Period : Pulse (2 : 1) -> 1.65V
* Always off -> Period : Pulse (1 : 0) -> 0V
* @}
*/
#include <device.h>
#include <inttypes.h>
#include <pwm.h>
#include <zephyr.h>
#include <ztest.h>
#define PWM_DEV_NAME CONFIG_PWM_QMSI_DEV_NAME
#define DEFAULT_PWM_PORT 0
#define DEFAULT_PERIOD_CYCLE 64000
#define DEFAULT_PULSE_CYCLE 32000
#define DEFAULT_PERIOD_USEC 2000
#define DEFAULT_PULSE_USEC 1000
static int test_task(uint32_t port, uint32_t period, uint32_t pulse, bool cycle)
{
TC_PRINT("[PWM]: %" PRIu8 ", [period]: %" PRIu32 ", [pulse]: %" PRIu32 "\n",
port, period, pulse);
struct device *pwm_dev = device_get_binding(PWM_DEV_NAME);
if (!pwm_dev) {
TC_PRINT("Cannot get PWM device\n");
return TC_FAIL;
}
if (cycle) {
/* Verify pwm_pin_set_cycles() */
if (pwm_pin_set_cycles(pwm_dev, port, period, pulse)) {
TC_PRINT("Fail to set the period and pulse width\n");
return TC_FAIL;
}
} else {
/* Verify pwm_pin_set_usec() */
if (pwm_pin_set_usec(pwm_dev, port, period, pulse)) {
TC_PRINT("Fail to set the period and pulse width\n");
return TC_FAIL;
}
}
return TC_PASS;
}
void test_pwm_usec(void)
{
/* Period : Pulse (2000 : 1000), unit (usec). Voltage : 1.65V */
assert_true(test_task(DEFAULT_PWM_PORT, DEFAULT_PERIOD_USEC,
DEFAULT_PULSE_USEC, false) == TC_PASS, NULL);
k_sleep(1000);
/* Period : Pulse (2000 : 2000), unit (usec). Voltage : 3.3V */
assert_true(test_task(DEFAULT_PWM_PORT, DEFAULT_PERIOD_USEC,
DEFAULT_PERIOD_USEC, false) == TC_PASS, NULL);
k_sleep(1000);
/* Period : Pulse (2000 : 0), unit (usec). Voltage : 0V */
assert_true(test_task(DEFAULT_PWM_PORT, DEFAULT_PERIOD_USEC,
0, false) == TC_PASS, NULL);
k_sleep(1000);
}
void test_pwm_cycle(void)
{
/* Period : Pulse (64000 : 32000), unit (cycle). Voltage : 1.65V */
assert_true(test_task(DEFAULT_PWM_PORT, DEFAULT_PERIOD_CYCLE,
DEFAULT_PULSE_CYCLE, true) == TC_PASS, NULL);
k_sleep(1000);
/* Period : Pulse (64000 : 64000), unit (cycle). Voltage : 3.3V */
assert_true(test_task(DEFAULT_PWM_PORT, DEFAULT_PERIOD_CYCLE,
DEFAULT_PERIOD_CYCLE, true) == TC_PASS, NULL);
k_sleep(1000);
/* Period : Pulse (64000 : 0), unit (cycle). Voltage : 0V */
assert_true(test_task(DEFAULT_PWM_PORT, DEFAULT_PERIOD_CYCLE,
0, true) == TC_PASS, NULL);
}

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[test_pwm]
tags = drivers
platform_whitelist = quark_se_c1000_devboard quark_se_c1000_ss_devboard_quark_d2000_crb arduino_101 arduino_101_sss