amiro-lld / drivers / button / v1 / alld_button.c @ 1304b12b
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| 1 | 78cc79d4 | Thomas Schöpping | /*
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| 2 | AMiRo-LLD is a compilation of low-level hardware drivers for the Autonomous Mini Robot (AMiRo) platform.
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| 3 | Copyright (C) 2016..2019 Thomas Schöpping et al.
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| 4 | |||
| 5 | This program is free software: you can redistribute it and/or modify
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| 6 | it under the terms of the GNU Lesser General Public License as published by
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| 7 | the Free Software Foundation, either version 3 of the License, or
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| 8 | (at your option) any later version.
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| 9 | |||
| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU Lesser General Public License for more details.
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| 14 | |||
| 15 | You should have received a copy of the GNU Lesser General Public License
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| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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| 17 | */
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| 18 | |||
| 19 | /**
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| 20 | 9466e34d | Thomas Schöpping | * @file alld_button.c
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| 21 | * @brief Button function implementations.
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| 22 | 78cc79d4 | Thomas Schöpping | *
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| 23 | 9466e34d | Thomas Schöpping | * @addtogroup lld_button
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| 24 | 78cc79d4 | Thomas Schöpping | * @{
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| 25 | */
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| 26 | |||
| 27 | 9466e34d | Thomas Schöpping | #include <alld_button.h> |
| 28 | 78cc79d4 | Thomas Schöpping | |
| 29 | /******************************************************************************/
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| 30 | /* LOCAL DEFINITIONS */
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| 31 | /******************************************************************************/
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| 32 | |||
| 33 | /******************************************************************************/
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| 34 | /* EXPORTED VARIABLES */
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| 35 | /******************************************************************************/
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| 36 | |||
| 37 | /******************************************************************************/
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| 38 | /* LOCAL TYPES */
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| 39 | /******************************************************************************/
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| 40 | |||
| 41 | /******************************************************************************/
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| 42 | /* LOCAL VARIABLES */
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| 43 | /******************************************************************************/
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| 44 | |||
| 45 | /******************************************************************************/
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| 46 | /* LOCAL FUNCTIONS */
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| 47 | /******************************************************************************/
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| 48 | |||
| 49 | /******************************************************************************/
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| 50 | /* EXPORTED FUNCTIONS */
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| 51 | /******************************************************************************/
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| 52 | |||
| 53 | /**
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| 54 | 9466e34d | Thomas Schöpping | * @brief Get the current status of the button.
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| 55 | * @param[in] button The button driver object.
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| 56 | * @param[out] state The state object to fill.
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| 57 | * @return An indicator whether the call was successful.
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| 58 | 78cc79d4 | Thomas Schöpping | */
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| 59 | 9466e34d | Thomas Schöpping | apalExitStatus_t button_lld_get(const ButtonDriver* const button, button_lld_state_t* const state) |
| 60 | 78cc79d4 | Thomas Schöpping | {
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| 61 | 9466e34d | Thomas Schöpping | apalDbgAssert(button != NULL);
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| 62 | 78cc79d4 | Thomas Schöpping | apalDbgAssert(state != NULL);
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| 63 | |||
| 64 | apalControlGpioState_t gpio_state; |
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| 65 | 9466e34d | Thomas Schöpping | apalExitStatus_t status = apalControlGpioGet(button->gpio, &gpio_state); |
| 66 | *state = gpio_state == APAL_GPIO_ON ? BUTTON_LLD_STATE_PRESSED : BUTTON_LLD_STATE_RELEASED; |
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| 67 | 78cc79d4 | Thomas Schöpping | return status;
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| 68 | } |
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| 69 | |||
| 70 | /** @} */
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