1 files changed, 124 insertions, 0 deletions
diff --git a/os/hal/ports/STM32/LLD/FSMCv1/hal_sram_lld.c b/os/hal/ports/STM32/LLD/FSMCv1/hal_sram_lld.c
new file mode 100644
index 0000000..71ecacd
--- /dev/null
+++ b/os/hal/ports/STM32/LLD/FSMCv1/hal_sram_lld.c
@@ -0,0 +1,124 @@
+/*
+    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"
+
+#if (HAL_USE_SRAM == TRUE) || defined(__DOXYGEN__)
+
+#include "hal_sram_lld.h"
+
+/*===========================================================================*/
+/* Driver local definitions.                                                 */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+/**
+ * @brief   SRAM1 driver identifier.
+ */
+#if STM32_SRAM_USE_SRAM1 || defined(__DOXYGEN__)
+SRAMDriver SRAMD1;
+#endif
+
+/**
+ * @brief   SRAM2 driver identifier.
+ */
+#if STM32_SRAM_USE_SRAM2 || defined(__DOXYGEN__)
+SRAMDriver SRAMD2;
+#endif
+
+/**
+ * @brief   SRAM3 driver identifier.
+ */
+#if STM32_SRAM_USE_SRAM3 || defined(__DOXYGEN__)
+SRAMDriver SRAMD3;
+#endif
+
+/**
+ * @brief   SRAM4 driver identifier.
+ */
+#if STM32_SRAM_USE_SRAM4 || defined(__DOXYGEN__)
+SRAMDriver SRAMD4;
+#endif
+
+/*===========================================================================*/
+/* Driver local types.                                                       */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver interrupt handlers.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/**
+ * @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 sram_lld_start(SRAMDriver *sramp, const SRAMConfig *cfgp) {
+
+    sramp->sram->BTR  = cfgp->btr;
+    sramp->sram->BWTR = cfgp->bwtr;
+    sramp->sram->BCR  = cfgp->bcr | FSMC_BCR_MBKEN;
+}
+
+/**
+ * @brief   Deactivates the SRAM peripheral.
+ *
+ * @param[in] sramp         pointer to the @p SRAMDriver object
+ *
+ * @notapi
+ */
+void sram_lld_stop(SRAMDriver *sramp) {
+
+    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;
+}
+
+#endif /* STM32_SRAM_USE_SRAM */
+
+/** @} */
+