diff options
Diffstat (limited to 'os/hal/ports/STM32/LLD/FSMCv1/fsmc.c')
| -rw-r--r-- | os/hal/ports/STM32/LLD/FSMCv1/fsmc.c | 182 |
1 files changed, 182 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 000000000..a19919582 --- /dev/null +++ b/os/hal/ports/STM32/LLD/FSMCv1/fsmc.c @@ -0,0 +1,182 @@ +/* + 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" + +#if HAL_USE_NAND || 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_lld_init(void) { + + FSMCD1.state = FSMC_STOP; + +#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_lld_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_FSMC_INT + nvicEnableVector(FSMC_IRQn, 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_lld_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_FSMC_INT + nvicDisableVector(FSMC_IRQn); + #endif + rccDisableFSMC(FALSE); + } +#endif /* PLATFORM_STM32_USE_FSMC1 */ + + fsmcp->state = FSMC_STOP; + } +} + +#if STM32_NAND_USE_FSMC_INT +/** + * @brief Serve common interrupt. + * + * @notapi + */ +void fsmc_lld_serve_interrupt(void) { + + osalSysHalt("Unrealized"); +} + +/** + * @brief FSMC shared interrupt handler. + * + * @notapi + */ +CH_IRQ_HANDLER(FSMC_IRQHandler) { + osalSysHalt("This functionality untested"); + + CH_IRQ_PROLOGUE(); +#if STM32_NAND_USE_FSMC_NAND1 + if (FSMCD1.nand1->SR & FSMC_SR_ISR_MASK){ + NANDD1.isr_handler(&NANDD1, FSMCD1.nand1->SR); + } +#endif +#if STM32_NAND_USE_FSMC_NAND2 + if (FSMCD1.nand2->SR & FSMC_SR_ISR_MASK){ + NANDD2.isr_handler(&NANDD2, FSMCD1.nand2->SR); + } +#endif + CH_IRQ_EPILOGUE(); +} +#endif /* STM32_FSMC_USE_INT */ + +#endif /* HAL_USE_FSMC */ + +/** @} */ |