| /* |
| * Copyright (c) 2016 Intel Corporation. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /* |
| * @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_0 port 0 (This case uses port 1 on D2000). |
| * -# 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_PERIOD_CYCLE 64000 |
| #define DEFAULT_PULSE_CYCLE 32000 |
| #define DEFAULT_PERIOD_USEC 2000 |
| #define DEFAULT_PULSE_USEC 1000 |
| |
| #ifdef CONFIG_BOARD_QUARK_D2000_CRB |
| #include <pinmux.h> |
| #define PINMUX_NAME CONFIG_PINMUX_NAME |
| #define PWM1_PIN 24 |
| #define DEFAULT_PWM_PORT 1 |
| #else |
| #define DEFAULT_PWM_PORT 0 |
| #endif |
| |
| static int test_task(u32_t port, u32_t period, u32_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; |
| } |
| |
| #ifdef CONFIG_BOARD_QUARK_D2000_CRB |
| struct device *pinmux = device_get_binding(PINMUX_NAME); |
| u32_t function; |
| |
| if (!pinmux) { |
| TC_PRINT("Cannot get PINMUX\n"); |
| return TC_FAIL; |
| } |
| |
| if (pinmux_pin_set(pinmux, PWM1_PIN, PINMUX_FUNC_C)) { |
| TC_PRINT("Fail to set pin func, %u : %u\n", |
| PWM1_PIN, PINMUX_FUNC_C); |
| return TC_FAIL; |
| } |
| |
| if (pinmux_pin_get(pinmux, PWM1_PIN, &function)) { |
| TC_PRINT("Fail to get pin func\n"); |
| return TC_FAIL; |
| } |
| |
| if (function != PINMUX_FUNC_C) { |
| TC_PRINT("Error. PINMUX get doesn't match PINMUX set\n"); |
| return TC_FAIL; |
| } |
| #endif |
| |
| 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 */ |
| zassert_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 */ |
| zassert_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 */ |
| zassert_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 */ |
| zassert_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 */ |
| zassert_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 */ |
| zassert_true(test_task(DEFAULT_PWM_PORT, DEFAULT_PERIOD_CYCLE, |
| 0, true) == TC_PASS, NULL); |
| } |