diff options
Diffstat (limited to 'os/hal/ports/STM32/LLD/FSMCv1/fsmc.c')
| -rw-r--r-- | os/hal/ports/STM32/LLD/FSMCv1/fsmc.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/os/hal/ports/STM32/LLD/FSMCv1/fsmc.c b/os/hal/ports/STM32/LLD/FSMCv1/fsmc.c new file mode 100644 index 0000000..4c1a197 --- /dev/null +++ b/os/hal/ports/STM32/LLD/FSMCv1/fsmc.c @@ -0,0 +1,188 @@ +/* + ChibiOS/HAL - Copyright (C) 2006-2014 Giovanni Di Sirio + + 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. +*/ +/* + Concepts and parts of this file have been contributed by Uladzimir Pylinsky + aka barthess. + */ + +/** + * @file fsmc.c + * @brief FSMC Driver subsystem low level driver source template. + * + * @addtogroup FSMC + * @{ + */ +#include "hal.h" +#include "fsmc.h" + +#if HAL_USE_NAND || STM32_USE_FSMC_SRAM || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver local definitions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver exported variables. */ +/*===========================================================================*/ + +/** + * @brief FSMC1 driver identifier. + */ +#if STM32_FSMC_USE_FSMC1 || defined(__DOXYGEN__) +FSMCDriver FSMCD1; +#endif + +/*===========================================================================*/ +/* Driver local types. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local variables and types. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local functions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver interrupt handlers. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver exported functions. */ +/*===========================================================================*/ + +/** + * @brief Low level FSMC driver initialization. + * + * @notapi + */ +void fsmc_init(void) { + + if (FSMCD1.state == FSMC_UNINIT) { + FSMCD1.state = FSMC_STOP; + +#if STM32_SRAM_USE_FSMC_SRAM1 + FSMCD1.sram1 = (FSMC_SRAM_NOR_TypeDef *)(FSMC_Bank1_R_BASE); +#endif + +#if STM32_SRAM_USE_FSMC_SRAM2 + FSMCD1.sram2 = (FSMC_SRAM_NOR_TypeDef *)(FSMC_Bank1_R_BASE + 8); +#endif + +#if STM32_SRAM_USE_FSMC_SRAM3 + FSMCD1.sram3 = (FSMC_SRAM_NOR_TypeDef *)(FSMC_Bank1_R_BASE + 8 * 2); +#endif + +#if STM32_SRAM_USE_FSMC_SRAM4 + FSMCD1.sram4 = (FSMC_SRAM_NOR_TypeDef *)(FSMC_Bank1_R_BASE + 8 * 3); +#endif + +#if STM32_NAND_USE_FSMC_NAND1 + FSMCD1.nand1 = (FSMC_NAND_TypeDef *)FSMC_Bank2_R_BASE; +#endif + +#if STM32_NAND_USE_FSMC_NAND2 + FSMCD1.nand2 = (FSMC_NAND_TypeDef *)FSMC_Bank3_R_BASE; +#endif + +#if STM32_USE_FSMC_PCCARD + FSMCD1.pccard = (FSMC_PCCARD_TypeDef *)FSMC_Bank4_R_BASE; +#endif + } +} + +/** + * @brief Configures and activates the FSMC peripheral. + * + * @param[in] fsmcp pointer to the @p FSMCDriver object + * + * @notapi + */ +void fsmc_start(FSMCDriver *fsmcp) { + + osalDbgAssert((fsmcp->state == FSMC_STOP) || (fsmcp->state == FSMC_READY), + "invalid state"); + + if (fsmcp->state == FSMC_STOP) { + /* Enables the peripheral.*/ +#if STM32_FSMC_USE_FSMC1 + if (&FSMCD1 == fsmcp) { + rccResetFSMC(); + rccEnableFSMC(FALSE); +#if (!STM32_NAND_USE_EXT_INT && HAL_USE_NAND) + nvicEnableVector(STM32_FSMC_NUMBER, STM32_FSMC_FSMC1_IRQ_PRIORITY); +#endif + } +#endif /* STM32_FSMC_USE_FSMC1 */ + + fsmcp->state = FSMC_READY; + } +} + +/** + * @brief Deactivates the FSMC peripheral. + * + * @param[in] emcp pointer to the @p FSMCDriver object + * + * @notapi + */ +void fsmc_stop(FSMCDriver *fsmcp) { + + if (fsmcp->state == FSMC_READY) { + /* Resets the peripheral.*/ + rccResetFSMC(); + + /* Disables the peripheral.*/ +#if STM32_FSMC_USE_FSMC1 + if (&FSMCD1 == fsmcp) { +#if (!STM32_NAND_USE_EXT_INT && HAL_USE_NAND) + nvicDisableVector(STM32_FSMC_NUMBER); +#endif + rccDisableFSMC(FALSE); + } +#endif /* STM32_FSMC_USE_FSMC1 */ + + fsmcp->state = FSMC_STOP; + } +} + +#if !STM32_NAND_USE_EXT_INT +/** + * @brief FSMC shared interrupt handler. + * + * @notapi + */ +CH_IRQ_HANDLER(STM32_FSMC_HANDLER) { + + CH_IRQ_PROLOGUE(); +#if STM32_NAND_USE_FSMC_NAND1 + if (FSMCD1.nand1->SR & FSMC_SR_ISR_MASK){ + NANDD1.isr_handler(&NANDD1); + } +#endif +#if STM32_NAND_USE_FSMC_NAND2 + if (FSMCD1.nand2->SR & FSMC_SR_ISR_MASK){ + NANDD2.isr_handler(&NANDD2); + } +#endif + CH_IRQ_EPILOGUE(); +} +#endif /* !STM32_NAND_USE_EXT_INT */ + +#endif /* HAL_USE_FSMC || STM32_USE_FSMC_SRAM */ + +/** @} */ |