diff options
Diffstat (limited to 'os/hal/src/hal_fsmc.c')
| -rw-r--r-- | os/hal/src/hal_fsmc.c | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/os/hal/src/hal_fsmc.c b/os/hal/src/hal_fsmc.c new file mode 100644 index 0000000..7304866 --- /dev/null +++ b/os/hal/src/hal_fsmc.c @@ -0,0 +1,244 @@ +/* + 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.c + * @brief FSMC Driver subsystem low level driver source template. + * + * @addtogroup FSMC + * @{ + */ +#include "hal.h" + +#if (HAL_USE_FSMC_SDRAM == TRUE) || (HAL_USE_FSMC_SRAM == TRUE) || (HAL_USE_FSMC_NAND == TRUE) || 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. */ +/*===========================================================================*/ + +#include "hal_fsmc_sdram_lld.h" + +/** + * @brief Low level FSMC driver initialization. + * + * @notapi + */ +void fsmcInit(void) { + + if (FSMCD1.state == FSMC_UNINIT) { + FSMCD1.state = FSMC_STOP; + +#if STM32_FSMC_USE_SRAM1 + FSMCD1.sram1 = (FSMC_SRAM_NOR_TypeDef *)(FSMC_Bank1_R_BASE); +#endif + +#if STM32_FSMC_USE_SRAM2 + FSMCD1.sram2 = (FSMC_SRAM_NOR_TypeDef *)(FSMC_Bank1_R_BASE + 8); +#endif + +#if STM32_FSMC_USE_SRAM3 + FSMCD1.sram3 = (FSMC_SRAM_NOR_TypeDef *)(FSMC_Bank1_R_BASE + 8 * 2); +#endif + +#if STM32_FSMC_USE_SRAM4 + FSMCD1.sram4 = (FSMC_SRAM_NOR_TypeDef *)(FSMC_Bank1_R_BASE + 8 * 3); +#endif + +#if STM32_FSMC_USE_NAND1 + FSMCD1.nand1 = (FSMC_NAND_TypeDef *)FSMC_Bank2_R_BASE; +#endif + +#if STM32_FSMC_USE_NAND2 + FSMCD1.nand2 = (FSMC_NAND_TypeDef *)FSMC_Bank3_R_BASE; +#endif + +#if (defined(STM32F427xx) || defined(STM32F437xx) || \ + defined(STM32F429xx) || defined(STM32F439xx) || \ + defined(STM32F745xx) || defined(STM32F746xx) || \ + defined(STM32F756xx) || defined(STM32F767xx) || \ + defined(STM32F769xx) || defined(STM32F777xx) || \ + defined(STM32F779xx)) + #if STM32_FSMC_USE_SDRAM1 || STM32_FSMC_USE_SDRAM2 + FSMCD1.sdram = (FSMC_SDRAM_TypeDef *)FSMC_Bank5_6_R_BASE; + #endif +#endif + } +} + +/** + * @brief Configures and activates the FSMC peripheral. + * + * @param[in] fsmcp pointer to the @p FSMCDriver object + * + * @notapi + */ +void fsmcStart(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) { +#ifdef rccResetFSMC + rccResetFSMC(); +#endif + rccEnableFSMC(FALSE); +#if 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 fsmcStop(FSMCDriver *fsmcp) { + + if (fsmcp->state == FSMC_READY) { + /* Resets the peripheral.*/ +#ifdef rccResetFSMC + rccResetFSMC(); +#endif + + /* Disables the peripheral.*/ +#if STM32_FSMC_USE_FSMC1 + if (&FSMCD1 == fsmcp) { +#if HAL_USE_NAND + nvicDisableVector(STM32_FSMC_NUMBER); +#endif + rccDisableFSMC(); + } +#endif /* STM32_FSMC_USE_FSMC1 */ + + fsmcp->state = FSMC_STOP; + } +} + +/** + * @brief FSMC shared interrupt handler. + * + * @notapi + */ +CH_IRQ_HANDLER(STM32_FSMC_HANDLER) { + + CH_IRQ_PROLOGUE(); +#if STM32_FSMC_USE_NAND1 + if (FSMCD1.nand1->SR & FSMC_SR_ISR_MASK) { + NANDD1.isr_handler(&NANDD1); + } +#endif +#if STM32_FSMC_USE_NAND2 + if (FSMCD1.nand2->SR & FSMC_SR_ISR_MASK) { + NANDD2.isr_handler(&NANDD2); + } +#endif + CH_IRQ_EPILOGUE(); +} + + +/** + * @brief FSMC SDRAM Driver init + */ +void fsmcSdramInit(void) { + + fsmcInit(); + SDRAMD.sdram = FSMCD1.sdram; + SDRAMD.state = SDRAM_STOP; +} + +/** + * @brief Configures and activates the SDRAM peripheral. + * + * @param[in] sdramp pointer to the @p SDRAMDriver object + * @param[in] cfgp pointer to the @p SDRAMConfig object + */ +void fsmcSdramStart(SDRAMDriver *sdramp, const SDRAMConfig *cfgp) { + + if (FSMCD1.state == FSMC_STOP) + fsmcStart(&FSMCD1); + + osalDbgAssert((sdramp->state == SDRAM_STOP) || (sdramp->state == SDRAM_READY), + "SDRAM. Invalid state."); + + if (sdramp->state == SDRAM_STOP) { + + lld_sdram_start(sdramp, cfgp); + + sdramp->state = SDRAM_READY; + } +} + +/** + * @brief Deactivates the SDRAM peripheral. + * + * @param[in] sdramp pointer to the @p SDRAMDriver object + * + * @notapi + */ +void fsmcSdramStop(SDRAMDriver *sdramp) { + + if (sdramp->state == SDRAM_READY) { + lld_sdram_stop(sdramp); + sdramp->state = SDRAM_STOP; + } +} + +#endif /* HAL_USE_FSMC */ + +/** @} */ |