Diff: targets/TARGET_Silicon_Labs/TARGET_EFM32/flash_api.c

Revision:

167:e84263d55307

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_Silicon_Labs/TARGET_EFM32/flash_api.c	Wed Jun 21 17:46:44 2017 +0100
@@ -0,0 +1,138 @@
+/***************************************************************************//**
+ * @file flash_api.c
+ *******************************************************************************
+ * @section License
+ * <b>Copyright 2017 Silicon Laboratories, Inc. http://www.silabs.com</b>
+ *******************************************************************************
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ *
+ ******************************************************************************/
+
+#include "device.h"
+#if DEVICE_FLASH
+
+#include "flash_api.h"
+#include "em_msc.h"
+
+/** Initialize the flash peripheral and the flash_t object
+ *
+ * @param obj The flash object
+ * @return 0 for success, -1 for error
+ */
+int32_t flash_init(flash_t *obj)
+{
+    (void)obj;
+    return 0;
+}
+
+/** Uninitialize the flash peripheral and the flash_t object
+ *
+ * @param obj The flash object
+ * @return 0 for success, -1 for error
+ */
+int32_t flash_free(flash_t *obj)
+{
+    (void)obj;
+    return 0;
+}
+
+/** Erase one sector starting at defined address
+ *
+ * The address should be at sector boundary. This function does not do any check for address alignments
+ * @param obj The flash object
+ * @param address The sector starting address
+ * @return 0 for success, -1 for error
+ */
+int32_t flash_erase_sector(flash_t *obj, uint32_t address)
+{
+    (void)obj;
+    MSC_Status_TypeDef mscStatus = MSC_ErasePage((uint32_t *)address);
+
+    return (mscStatus == mscReturnOk) ? 0 : -1;
+}
+
+/** Program one page starting at defined address
+ *
+ * The page should be at page boundary, should not cross multiple sectors.
+ * This function does not do any check for address alignments or if size is aligned to a page size.
+ * @param obj The flash object
+ * @param address The sector starting address
+ * @param data The data buffer to be programmed
+ * @param size The number of bytes to program
+ * @return 0 for success, -1 for error
+ */
+int32_t flash_program_page(flash_t *obj, uint32_t address, const uint8_t *data, uint32_t size)
+{
+    (void)obj;
+    MSC_Status_TypeDef mscStatus = MSC_WriteWord((uint32_t *)address, data, size);
+
+    return (mscStatus == mscReturnOk) ? 0 : -1;
+}
+
+/** Get sector size
+ *
+ * @param obj The flash object
+ * @param address The sector starting address
+ * @return The size of a sector
+ */
+uint32_t flash_get_sector_size(const flash_t *obj, uint32_t address)
+{
+    (void)obj;
+    (void)address;
+
+    if (address < FLASH_BASE || address >= FLASH_BASE + FLASH_SIZE) {
+        // Address outside of flash -- invalid sector
+        return MBED_FLASH_INVALID_SIZE;
+    }
+
+    return FLASH_PAGE_SIZE;
+}
+
+/** Get page size
+ *
+ * @param obj The flash object
+ * @param address The page starting address
+ * @return The size of a page
+ */
+uint32_t flash_get_page_size(const flash_t *obj)
+{
+    (void)obj;
+    return FLASH_PAGE_SIZE;
+}
+
+/** Get start address for the flash region
+ *
+ * @param obj The flash object
+ * @return The start address for the flash region
+ */
+uint32_t flash_get_start_address(const flash_t *obj)
+{
+    (void)obj;
+    return FLASH_BASE;
+}
+
+/** Get the flash region size
+ *
+ * @param obj The flash object
+ * @return The flash region size
+ */
+uint32_t flash_get_size(const flash_t *obj)
+{
+    (void)obj;
+    return FLASH_SIZE;
+}
+
+#endif // DEVICE_FLASH