| /* |
| * Copyright (c) 2016 RnDity Sp. z o.o. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /** |
| * @file |
| * @brief System/hardware module for STM32F3 processor |
| */ |
| |
| #include <zephyr/device.h> |
| #include <zephyr/init.h> |
| #include <stm32_ll_system.h> |
| |
| #include <cmsis_core.h> |
| |
| /** |
| * @brief Perform basic hardware initialization at boot. |
| * |
| * This needs to be run from the very beginning. |
| * So the init priority has to be 0 (zero). |
| * |
| * @return 0 |
| */ |
| static int stm32f3_init(void) |
| { |
| /* Update CMSIS SystemCoreClock variable (HCLK) */ |
| /* At reset, system core clock is set to 8 MHz from HSI */ |
| SystemCoreClock = 8000000; |
| |
| /* Allow reflashing the board */ |
| LL_DBGMCU_EnableDBGSleepMode(); |
| |
| return 0; |
| } |
| |
| SYS_INIT(stm32f3_init, PRE_KERNEL_1, 0); |
