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OpenCellular/test/inductive_charging.c
Vic Yang b7f7cdaa72 ryu: improve inductive charging control 
When inductive charging just starts, there might be a blip on
CHARGE_DONE signal and it'd cause our charging control logic to shut
down charging. Fix this by waiting for a second before we start
monitoring CHARGE_DONE.

Also, once we see CHARGE_DONE=1 and disable charging, CHARGE_DONE will
go low. Handle this by ignoring all subsequent CHARGE_DONE change until
the next time the lid is opened.

BRANCH=Ryu
BUG=None
TEST=Pass the updated unit test.
TEST=Charge a base on Ryu P3.

Change-Id: I9d911cd689d8e88ebcd66e6eca7c86dd70704880
Signed-off-by: Vic Yang <victoryang@google.com>
Reviewed-on: https://chromium-review.googlesource.com/243365
Tested-by: Vic Yang <victoryang@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Commit-Queue: Vic Yang <victoryang@chromium.org>
2015-01-30 05:11:06 +00:00

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/* Copyright 2014 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Test inductive charging module.
*/
#include "common.h"
#include "console.h"
#include "gpio.h"
#include "hooks.h"
#include "inductive_charging.h"
#include "lid_switch.h"
#include "test_util.h"
#include "timer.h"
#include "util.h"
#define START_CHARGE_DELAY 5000 /* ms */
#define MONITOR_CHARGE_DONE_DELAY 1000 /* ms */
#define TEST_CHECK_CHARGE_DELAY (START_CHARGE_DELAY + \
MONITOR_CHARGE_DONE_DELAY + 500) /* ms */
static void wait_for_lid_debounce(void)
{
while (lid_is_open() != gpio_get_level(GPIO_LID_OPEN))
msleep(20);
}
static void set_lid_open(int lid_open)
{
gpio_set_level(GPIO_LID_OPEN, lid_open);
wait_for_lid_debounce();
}
static int test_lid(void)
{
/* Lid is open initially */
set_lid_open(1);
gpio_set_level(GPIO_CHARGE_DONE, 0);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 0);
/*
* Close the lid. The EC should wait for 5 second before
* enabling transmitter.
*/
set_lid_open(0);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 0);
msleep(TEST_CHECK_CHARGE_DELAY);
/* Transmitter should now be enabled. */
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 1);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 1);
/* Open the lid. Charging should stop. */
set_lid_open(1);
msleep(TEST_CHECK_CHARGE_DELAY);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 0);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 0);
return EC_SUCCESS;
}
static int test_charge_done(void)
{
/* Close the lid to start charging */
set_lid_open(0);
msleep(TEST_CHECK_CHARGE_DELAY);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 1);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 1);
/* Charging is done. Stop charging, but don't turn off transmitter. */
gpio_set_level(GPIO_CHARGE_DONE, 1);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 1);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 0);
/* Oops, CHARGE_DONE changes again. We should ignore it. */
gpio_set_level(GPIO_CHARGE_DONE, 0);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 1);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 0);
/* Open the lid. Charger should be turned off. */
set_lid_open(1);
msleep(TEST_CHECK_CHARGE_DELAY);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 0);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 0);
return EC_SUCCESS;
}
static int test_lid_open_during_charging(void)
{
/* Close the lid. Start charging. */
set_lid_open(0);
msleep(TEST_CHECK_CHARGE_DELAY);
gpio_set_level(GPIO_CHARGE_DONE, 0);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 1);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 1);
/* Open the lid. Transmitter should be turned off. */
set_lid_open(1);
msleep(TEST_CHECK_CHARGE_DELAY);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 0);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 0);
/* Toggle charge done signal. Charging should not start. */
gpio_set_level(GPIO_CHARGE_DONE, 1);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 0);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 0);
gpio_set_level(GPIO_CHARGE_DONE, 0);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 0);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 0);
return EC_SUCCESS;
}
static int test_debounce_charge_done(void)
{
/* Lid is open initially. */
set_lid_open(1);
gpio_set_level(GPIO_CHARGE_DONE, 0);
msleep(TEST_CHECK_CHARGE_DELAY);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 0);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 0);
/* Close the lid. Charging should start. */
set_lid_open(0);
msleep(START_CHARGE_DELAY + 100);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 1);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 1);
/* Within the first second, changes on CHARGE_DONE should be ignore. */
gpio_set_level(GPIO_CHARGE_DONE, 1);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 1);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 1);
msleep(100);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 1);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 1);
gpio_set_level(GPIO_CHARGE_DONE, 0);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 1);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 1);
msleep(100);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 1);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 1);
/* Changes on CHARGE_DONE after take effect. */
msleep(MONITOR_CHARGE_DONE_DELAY);
gpio_set_level(GPIO_CHARGE_DONE, 1);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 1);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 0);
/* Open the lid. Charger should be turned off. */
set_lid_open(1);
msleep(TEST_CHECK_CHARGE_DELAY);
TEST_ASSERT(gpio_get_level(GPIO_BASE_CHG_VDD_EN) == 0);
TEST_ASSERT(gpio_get_level(GPIO_CHARGE_EN) == 0);
return EC_SUCCESS;
}
void run_test(void)
{
test_reset();
RUN_TEST(test_lid);
RUN_TEST(test_charge_done);
RUN_TEST(test_lid_open_during_charging);
RUN_TEST(test_debounce_charge_done);
test_print_result();
}
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