diff options
Diffstat (limited to 'Drivers/CMSIS/DSP/Examples/ARM/arm_variance_example/RTE/Device/ARMCM7_SP/system_ARMCM7.c')
-rw-r--r-- | Drivers/CMSIS/DSP/Examples/ARM/arm_variance_example/RTE/Device/ARMCM7_SP/system_ARMCM7.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/Drivers/CMSIS/DSP/Examples/ARM/arm_variance_example/RTE/Device/ARMCM7_SP/system_ARMCM7.c b/Drivers/CMSIS/DSP/Examples/ARM/arm_variance_example/RTE/Device/ARMCM7_SP/system_ARMCM7.c new file mode 100644 index 000000000..69e2a8d31 --- /dev/null +++ b/Drivers/CMSIS/DSP/Examples/ARM/arm_variance_example/RTE/Device/ARMCM7_SP/system_ARMCM7.c @@ -0,0 +1,85 @@ +/**************************************************************************//** + * @file system_ARMCM7.c + * @brief CMSIS Device System Source File for + * ARMCM7 Device + * @version V5.3.1 + * @date 09. July 2018 + ******************************************************************************/ +/* + * Copyright (c) 2009-2018 Arm Limited. All rights reserved. + * + * 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 + * + * 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. + */ + +#if defined (ARMCM7) + #include "ARMCM7.h" +#elif defined (ARMCM7_SP) + #include "ARMCM7_SP.h" +#elif defined (ARMCM7_DP) + #include "ARMCM7_DP.h" +#else + #error device not specified! +#endif + +/*---------------------------------------------------------------------------- + Define clocks + *----------------------------------------------------------------------------*/ +#define XTAL (50000000UL) /* Oscillator frequency */ + +#define SYSTEM_CLOCK (XTAL / 2U) + + +/*---------------------------------------------------------------------------- + Externals + *----------------------------------------------------------------------------*/ +#if defined (__VTOR_PRESENT) && (__VTOR_PRESENT == 1U) + extern uint32_t __Vectors; +#endif + +/*---------------------------------------------------------------------------- + System Core Clock Variable + *----------------------------------------------------------------------------*/ +uint32_t SystemCoreClock = SYSTEM_CLOCK; /* System Core Clock Frequency */ + + +/*---------------------------------------------------------------------------- + System Core Clock update function + *----------------------------------------------------------------------------*/ +void SystemCoreClockUpdate (void) +{ + SystemCoreClock = SYSTEM_CLOCK; +} + +/*---------------------------------------------------------------------------- + System initialization function + *----------------------------------------------------------------------------*/ +void SystemInit (void) +{ + +#if defined (__VTOR_PRESENT) && (__VTOR_PRESENT == 1U) + SCB->VTOR = (uint32_t) &__Vectors; +#endif + +#if defined (__FPU_USED) && (__FPU_USED == 1U) + SCB->CPACR |= ((3U << 10U*2U) | /* enable CP10 Full Access */ + (3U << 11U*2U) ); /* enable CP11 Full Access */ +#endif + +#ifdef UNALIGNED_SUPPORT_DISABLE + SCB->CCR |= SCB_CCR_UNALIGN_TRP_Msk; +#endif + + SystemCoreClock = SYSTEM_CLOCK; +} |