flash: add get_sector/page_size functions

Author: 0xc0170

hal/TARGET_FLASH_CMSIS_ALGO/flash_common_algo.c

@@ -170,3 +170,16 @@ int32_t flash_program_page(flash_t *obj, uint32_t address, const uint8_t *data,
     core_util_critical_section_exit();
     return ret ? -1 : 0;
 }
+
+
+uint32_t flash_get_sector_size(flash_t *obj, uint32_t address)
+{
+    uint32_t sector_index = get_sector_index(obj, address);
+    return obj->target_config->sectors[sector_index].size;
+}
+
+uint32_t flash_get_page_size(flash_t *obj)
+{
+    return obj->target_config->page_size;
+}
+

hal/flash_api.h

@@ -42,6 +42,10 @@ int32_t flash_erase_sector(flash_t *obj, uint32_t address);
 // maps FlashAlgo to ProgramPage
 int32_t flash_program_page(flash_t *obj, uint32_t address, const uint8_t *data, uint32_t size);
 
+uint32_t flash_get_sector_size(flash_t *obj, uint32_t address);
+
+uint32_t flash_get_page_size(flash_t *obj);
+
 #ifdef __cplusplus
 }
 #endif