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3e98dec612
BRANCH=None BUG=None TEST=Manual - Connect handshake and gpio test lines between th and dut - Build tests - run 'cat /dev/ttyACM0' in one terminal - run 'cat /def/ttyACM1' in another - Flash boards - All test results print their test name followed by a space and and integer error code Change-Id: If52e9b50705779b3a291e2d0f6b0721a5b6197d8 Reviewed-on: https://chromium-review.googlesource.com/359988 Commit-Ready: Chris Chen <twothreecc@google.com> Tested-by: Chris Chen <twothreecc@google.com> Reviewed-by: Randall Spangler <rspangler@chromium.org>
37 lines
910 B
C
37 lines
910 B
C
/* Copyright 2016 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gpio.h"
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#include "timer.h"
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#include "watchdog.h"
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#include "cts_common.h"
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#include "th_common.h"
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/* Return SUCCESS if and only if we reach end of function
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* Returning success here means sync was successful
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*/
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enum cts_rc sync(void)
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{
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int input_level;
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gpio_set_level(GPIO_HANDSHAKE_OUTPUT, 0);
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do {
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watchdog_reload();
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input_level = gpio_get_level(GPIO_HANDSHAKE_INPUT);
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} while (input_level);
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gpio_set_level(GPIO_HANDSHAKE_OUTPUT, 1);
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do {
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watchdog_reload();
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input_level = gpio_get_level(GPIO_HANDSHAKE_INPUT);
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} while (!input_level);
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gpio_set_level(GPIO_HANDSHAKE_OUTPUT, 0);
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do {
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watchdog_reload();
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input_level = gpio_get_level(GPIO_HANDSHAKE_INPUT);
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} while (input_level);
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return CTS_RC_SUCCESS;
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}
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