diff options
Diffstat (limited to 'os/hal/ports/STM32/LLD/FSMCv1/hal_fsmc_sram_lld.c')
| -rw-r--r-- | os/hal/ports/STM32/LLD/FSMCv1/hal_fsmc_sram_lld.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/os/hal/ports/STM32/LLD/FSMCv1/hal_fsmc_sram_lld.c b/os/hal/ports/STM32/LLD/FSMCv1/hal_fsmc_sram_lld.c new file mode 100644 index 0000000..da13ca5 --- /dev/null +++ b/os/hal/ports/STM32/LLD/FSMCv1/hal_fsmc_sram_lld.c @@ -0,0 +1,165 @@ +/* + ChibiOS/HAL - Copyright (C) 2014 Uladzimir Pylinsky aka barthess + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance 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_fsmc_sram.c + * @brief SRAM Driver subsystem low level driver source. + * + * @addtogroup SRAM + * @{ + */ +#include "hal.h" +#include "hal_fsmc_sram.h" + +#if (STM32_USE_FSMC_SRAM == TRUE) || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver local definitions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver exported variables. */ +/*===========================================================================*/ +/** + * @brief SRAM1 driver identifier. + */ +#if STM32_SRAM_USE_FSMC_SRAM1 || defined(__DOXYGEN__) +SRAMDriver SRAMD1; +#endif + +/** + * @brief SRAM2 driver identifier. + */ +#if STM32_SRAM_USE_FSMC_SRAM2 || defined(__DOXYGEN__) +SRAMDriver SRAMD2; +#endif + +/** + * @brief SRAM3 driver identifier. + */ +#if STM32_SRAM_USE_FSMC_SRAM3 || defined(__DOXYGEN__) +SRAMDriver SRAMD3; +#endif + +/** + * @brief SRAM4 driver identifier. + */ +#if STM32_SRAM_USE_FSMC_SRAM4 || defined(__DOXYGEN__) +SRAMDriver SRAMD4; +#endif + +/*===========================================================================*/ +/* Driver local types. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local variables and types. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local functions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver interrupt handlers. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver exported functions. */ +/*===========================================================================*/ + +/** + * @brief Low level SRAM driver initialization. + * + * @notapi + */ +void fsmcSramInit(void) { + + fsmc_init(); + +#if STM32_SRAM_USE_FSMC_SRAM1 + SRAMD1.sram = FSMCD1.sram1; + SRAMD1.state = SRAM_STOP; +#endif /* STM32_SRAM_USE_FSMC_SRAM1 */ + +#if STM32_SRAM_USE_FSMC_SRAM2 + SRAMD2.sram = FSMCD1.sram2; + SRAMD2.state = SRAM_STOP; +#endif /* STM32_SRAM_USE_FSMC_SRAM2 */ + +#if STM32_SRAM_USE_FSMC_SRAM3 + SRAMD3.sram = FSMCD1.sram3; + SRAMD3.state = SRAM_STOP; +#endif /* STM32_SRAM_USE_FSMC_SRAM3 */ + +#if STM32_SRAM_USE_FSMC_SRAM4 + SRAMD4.sram = FSMCD1.sram4; + SRAMD4.state = SRAM_STOP; +#endif /* STM32_SRAM_USE_FSMC_SRAM4 */ +} + +/** + * @brief Configures and activates the SRAM peripheral. + * + * @param[in] sramp pointer to the @p SRAMDriver object + * @param[in] cfgp pointer to the @p SRAMConfig object + * + * @notapi + */ +void fsmcSramStart(SRAMDriver *sramp, const SRAMConfig *cfgp) { + + if (FSMCD1.state == FSMC_STOP) + fsmc_start(&FSMCD1); + + osalDbgAssert((sramp->state == SRAM_STOP) || (sramp->state == SRAM_READY), + "invalid state"); + + if (sramp->state == SRAM_STOP) { + sramp->sram->BTR = cfgp->btr; + sramp->sram->BWTR = cfgp->bwtr; + sramp->sram->BCR = cfgp->bcr | FSMC_BCR_MBKEN; + sramp->state = SRAM_READY; + } +} + +/** + * @brief Deactivates the SRAM peripheral. + * + * @param[in] sramp pointer to the @p SRAMDriver object + * + * @notapi + */ +void fsmcSramStop(SRAMDriver *sramp) { + + if (sramp->state == SRAM_READY) { + uint32_t mask = FSMC_BCR_MBKEN; +#if (defined(STM32F427xx) || defined(STM32F437xx) || \ + defined(STM32F429xx) || defined(STM32F439xx) || \ + defined(STM32F745xx) || defined(STM32F746xx) || \ + defined(STM32F756xx) || defined(STM32F767xx) || \ + defined(STM32F769xx) || defined(STM32F777xx) || \ + defined(STM32F779xx)) + mask |= FSMC_BCR_CCLKEN; +#endif + sramp->sram->BCR &= ~mask; + sramp->state = SRAM_STOP; + } +} + +#endif /* STM32_USE_FSMC_SRAM */ + +/** @} */ + |