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author | Fabien Poussin <fabien.poussin@gmail.com> | 2019-11-04 10:49:50 +0100 |
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committer | GitHub <noreply@github.com> | 2019-11-04 10:49:50 +0100 |
commit | d1aad8853600f3ce2cfbffeaea8e50150e2b6dd8 (patch) | |
tree | 703501bbb1acd3937a1dbba4c68cf98c5d8ac5d2 /os/hal/src/hal_sram.c | |
parent | 462e4e00f64027b7f38b33ad2b0737c453cf0fc1 (diff) | |
parent | c65efdcfa1d281a8f0a29bb864e86dd0c892c156 (diff) | |
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Merge pull request #205 from ChibiOS/fsmc
FSMC drivers update
Diffstat (limited to 'os/hal/src/hal_sram.c')
-rw-r--r-- | os/hal/src/hal_sram.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/os/hal/src/hal_sram.c b/os/hal/src/hal_sram.c new file mode 100644 index 0000000..892e9a2 --- /dev/null +++ b/os/hal/src/hal_sram.c @@ -0,0 +1,146 @@ +/* + ChibiOS - Copyright (C) 2006..2017 Giovanni Di Sirio + Copyright (C) 2017 Fabien Poussin (fabien.poussin (at) google's mail) + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in sramliance 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. +*/ + +/** + * @file hal_sram.c + * @brief SRAM Driver code. + * + * @addtogroup SRAM + * @{ + */ + +#include "hal.h" + +#if HAL_USE_SRAM || defined(__DOXYGEN__) + + +/*===========================================================================*/ +/* Driver local definitions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver exported variables. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local variables and types. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local functions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver exported functions. */ +/*===========================================================================*/ + +#include "hal_sram_lld.h" + +/** + * @brief SRAM Driver initialization. + * @note This function is implicitly invoked by @p halInit(), there is + * no need to explicitly initialize the driver. + * + * @init + */ +void sramInit(void) { + + fsmcInit(); + +#if STM32_SRAM_USE_SRAM1 + SRAMD1.sram = FSMCD1.sram1; + SRAMD1.state = SRAM_STOP; + sramObjectInit(&SRAMD1); +#endif /* STM32_SRAM_USE_SRAM1 */ + +#if STM32_SRAM_USE_SRAM2 + SRAMD2.sram = FSMCD1.sram2; + SRAMD2.state = SRAM_STOP; + sramObjectInit(&SRAMD2); +#endif /* STM32_SRAM_USE_SRAM2 */ + +#if STM32_SRAM_USE_SRAM3 + SRAMD3.sram = FSMCD1.sram3; + SRAMD3.state = SRAM_STOP; + sramObjectInit(&SRAMD3); +#endif /* STM32_SRAM_USE_SRAM3 */ + +#if STM32_SRAM_USE_SRAM4 + SRAMD4.sram = FSMCD1.sram4; + SRAMD4.state = SRAM_STOP; + sramObjectInit(&SRAMD4); +#endif /* STM32_SRAM_USE_SRAM4 */ + +} + +/** + * @brief Initializes the standard part of a @p SRAMDriver structure. + * + * @param[out] sramp pointer to the @p SRAMDriver object + * + * @init + */ +void sramObjectInit(SRAMDriver *sramp) { + + sramp->state = SRAM_STOP; +} + +/** + * @brief Configures and activates the SRAM peripheral. + * + * @param[in] sramp pointer to the @p SRAMDriver object + * @param[in] config pointer to the @p SRAMConfig object + * + * @api + */ +void sramStart(SRAMDriver *sramp, const SRAMConfig *config) { + + osalDbgCheck((sramp != NULL) && (config != NULL)); + + if (FSMCD1.state == FSMC_STOP) + fsmcStart(&FSMCD1); + + osalSysLock(); + osalDbgAssert((sramp->state == SRAM_STOP) || (sramp->state == SRAM_READY), + "invalid state"); + sram_lld_start(sramp, config); + sramp->state = SRAM_READY; + osalSysUnlock(); +} + +/** + * @brief Deactivates the SRAM peripheral. + * + * @param[in] sramp pointer to the @p SRAMDriver object + * + * @api + */ +void sramStop(SRAMDriver *sramp) { + + osalDbgCheck(sramp != NULL); + + osalSysLock(); + osalDbgAssert((sramp->state == SRAM_STOP) || (sramp->state == SRAM_READY), + "invalid state"); + sram_lld_stop(sramp); + sramp->state = SRAM_STOP; + osalSysUnlock(); +} + +#endif /* HAL_USE_SRAM */ + +/** @} */ |