| /* |
| |
| 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. |
| |
| NOTICE: This file has been modified by Nordic Semiconductor ASA. |
| |
| */ |
| |
| /* NOTE: Template files (including this one) are application specific and therefore expected to |
| be copied into the application project folder prior to its use! */ |
| |
| #include <stdint.h> |
| #include <stdbool.h> |
| #include "nrf.h" |
| #include "system_nrf52840.h" |
| |
| /*lint ++flb "Enter library region" */ |
| |
| #define __SYSTEM_CLOCK_64M (64000000UL) |
| |
| static bool errata_36(void); |
| static bool errata_66(void); |
| static bool errata_98(void); |
| static bool errata_103(void); |
| static bool errata_115(void); |
| static bool errata_120(void); |
| static bool errata_136(void); |
| |
| |
| #if defined ( __CC_ARM ) |
| uint32_t SystemCoreClock __attribute__((used)) = __SYSTEM_CLOCK_64M; |
| #elif defined ( __ICCARM__ ) |
| __root uint32_t SystemCoreClock = __SYSTEM_CLOCK_64M; |
| #elif defined ( __GNUC__ ) |
| uint32_t SystemCoreClock __attribute__((used)) = __SYSTEM_CLOCK_64M; |
| #endif |
| |
| void SystemCoreClockUpdate(void) |
| { |
| SystemCoreClock = __SYSTEM_CLOCK_64M; |
| } |
| |
| void SystemInit(void) |
| { |
| /* Enable SWO trace functionality. If ENABLE_SWO is not defined, SWO pin will be used as GPIO (see Product |
| Specification to see which one). */ |
| #if defined (ENABLE_SWO) |
| CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk; |
| NRF_CLOCK->TRACECONFIG |= CLOCK_TRACECONFIG_TRACEMUX_Serial << CLOCK_TRACECONFIG_TRACEMUX_Pos; |
| NRF_P1->PIN_CNF[0] = (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos); |
| #endif |
| |
| /* Enable Trace functionality. If ENABLE_TRACE is not defined, TRACE pins will be used as GPIOs (see Product |
| Specification to see which ones). */ |
| #if defined (ENABLE_TRACE) |
| CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk; |
| NRF_CLOCK->TRACECONFIG |= CLOCK_TRACECONFIG_TRACEMUX_Parallel << CLOCK_TRACECONFIG_TRACEMUX_Pos; |
| NRF_P0->PIN_CNF[7] = (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos); |
| NRF_P1->PIN_CNF[0] = (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos); |
| NRF_P0->PIN_CNF[12] = (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos); |
| NRF_P0->PIN_CNF[11] = (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos); |
| NRF_P1->PIN_CNF[9] = (GPIO_PIN_CNF_DRIVE_H0H1 << GPIO_PIN_CNF_DRIVE_Pos) | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos); |
| #endif |
| |
| /* Workaround for Errata 36 "CLOCK: Some registers are not reset when expected" found at the Errata document |
| for your device located at https://infocenter.nordicsemi.com/ */ |
| if (errata_36()){ |
| NRF_CLOCK->EVENTS_DONE = 0; |
| NRF_CLOCK->EVENTS_CTTO = 0; |
| NRF_CLOCK->CTIV = 0; |
| } |
| |
| /* Workaround for Errata 66 "TEMP: Linearity specification not met with default settings" found at the Errata document |
| for your device located at https://infocenter.nordicsemi.com/ */ |
| if (errata_66()){ |
| NRF_TEMP->A0 = NRF_FICR->TEMP.A0; |
| NRF_TEMP->A1 = NRF_FICR->TEMP.A1; |
| NRF_TEMP->A2 = NRF_FICR->TEMP.A2; |
| NRF_TEMP->A3 = NRF_FICR->TEMP.A3; |
| NRF_TEMP->A4 = NRF_FICR->TEMP.A4; |
| NRF_TEMP->A5 = NRF_FICR->TEMP.A5; |
| NRF_TEMP->B0 = NRF_FICR->TEMP.B0; |
| NRF_TEMP->B1 = NRF_FICR->TEMP.B1; |
| NRF_TEMP->B2 = NRF_FICR->TEMP.B2; |
| NRF_TEMP->B3 = NRF_FICR->TEMP.B3; |
| NRF_TEMP->B4 = NRF_FICR->TEMP.B4; |
| NRF_TEMP->B5 = NRF_FICR->TEMP.B5; |
| NRF_TEMP->T0 = NRF_FICR->TEMP.T0; |
| NRF_TEMP->T1 = NRF_FICR->TEMP.T1; |
| NRF_TEMP->T2 = NRF_FICR->TEMP.T2; |
| NRF_TEMP->T3 = NRF_FICR->TEMP.T3; |
| NRF_TEMP->T4 = NRF_FICR->TEMP.T4; |
| } |
| |
| /* Workaround for Errata 98 "NFCT: Not able to communicate with the peer" found at the Errata document |
| for your device located at https://infocenter.nordicsemi.com/ */ |
| if (errata_98()){ |
| *(volatile uint32_t *)0x4000568Cul = 0x00038148ul; |
| } |
| |
| /* Workaround for Errata 103 "CCM: Wrong reset value of CCM MAXPACKETSIZE" found at the Errata document |
| for your device located at https://infocenter.nordicsemi.com/ */ |
| if (errata_103()){ |
| NRF_CCM->MAXPACKETSIZE = 0xFBul; |
| } |
| |
| /* Workaround for Errata 115 "RAM: RAM content cannot be trusted upon waking up from System ON Idle or System OFF mode" found at the Errata document |
| for your device located at https://infocenter.nordicsemi.com/ */ |
| if (errata_115()){ |
| *(volatile uint32_t *)0x40000EE4 = (*(volatile uint32_t *)0x40000EE4 & 0xFFFFFFF0) | (*(uint32_t *)0x10000258 & 0x0000000F); |
| } |
| |
| /* Workaround for Errata 120 "QSPI: Data read or written is corrupted" found at the Errata document |
| for your device located at https://infocenter.nordicsemi.com/ */ |
| if (errata_120()){ |
| *(volatile uint32_t *)0x40029640ul = 0x200ul; |
| } |
| |
| /* Workaround for Errata 136 "System: Bits in RESETREAS are set when they should not be" found at the Errata document |
| for your device located at https://infocenter.nordicsemi.com/ */ |
| if (errata_136()){ |
| if (NRF_POWER->RESETREAS & POWER_RESETREAS_RESETPIN_Msk){ |
| NRF_POWER->RESETREAS = ~POWER_RESETREAS_RESETPIN_Msk; |
| } |
| } |
| |
| /* Enable the FPU if the compiler used floating point unit instructions. __FPU_USED is a MACRO defined by the |
| * compiler. Since the FPU consumes energy, remember to disable FPU use in the compiler if floating point unit |
| * operations are not used in your code. */ |
| #if (__FPU_USED == 1) |
| SCB->CPACR |= (3UL << 20) | (3UL << 22); |
| __DSB(); |
| __ISB(); |
| #endif |
| |
| /* Configure NFCT pins as GPIOs if NFCT is not to be used in your code. If CONFIG_NFCT_PINS_AS_GPIOS is not defined, |
| two GPIOs (see Product Specification to see which ones) will be reserved for NFC and will not be available as |
| normal GPIOs. */ |
| #if defined (CONFIG_NFCT_PINS_AS_GPIOS) |
| if ((NRF_UICR->NFCPINS & UICR_NFCPINS_PROTECT_Msk) == (UICR_NFCPINS_PROTECT_NFC << UICR_NFCPINS_PROTECT_Pos)){ |
| NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos; |
| while (NRF_NVMC->READY == NVMC_READY_READY_Busy){} |
| NRF_UICR->NFCPINS &= ~UICR_NFCPINS_PROTECT_Msk; |
| while (NRF_NVMC->READY == NVMC_READY_READY_Busy){} |
| NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos; |
| while (NRF_NVMC->READY == NVMC_READY_READY_Busy){} |
| NVIC_SystemReset(); |
| } |
| #endif |
| |
| /* Configure GPIO pads as pPin Reset pin if Pin Reset capabilities desired. If CONFIG_GPIO_AS_PINRESET is not |
| defined, pin reset will not be available. One GPIO (see Product Specification to see which one) will then be |
| reserved for PinReset and not available as normal GPIO. */ |
| #if defined (CONFIG_GPIO_AS_PINRESET) |
| if (((NRF_UICR->PSELRESET[0] & UICR_PSELRESET_CONNECT_Msk) != (UICR_PSELRESET_CONNECT_Connected << UICR_PSELRESET_CONNECT_Pos)) || |
| ((NRF_UICR->PSELRESET[1] & UICR_PSELRESET_CONNECT_Msk) != (UICR_PSELRESET_CONNECT_Connected << UICR_PSELRESET_CONNECT_Pos))){ |
| NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos; |
| while (NRF_NVMC->READY == NVMC_READY_READY_Busy){} |
| NRF_UICR->PSELRESET[0] = 18; |
| while (NRF_NVMC->READY == NVMC_READY_READY_Busy){} |
| NRF_UICR->PSELRESET[1] = 18; |
| while (NRF_NVMC->READY == NVMC_READY_READY_Busy){} |
| NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos; |
| while (NRF_NVMC->READY == NVMC_READY_READY_Busy){} |
| NVIC_SystemReset(); |
| } |
| #endif |
| |
| SystemCoreClockUpdate(); |
| } |
| |
| |
| static bool errata_36(void) |
| { |
| if (*(uint32_t *)0x10000130ul == 0x8ul){ |
| if (*(uint32_t *)0x10000134ul == 0x0ul){ |
| return true; |
| } |
| if (*(uint32_t *)0x10000134ul == 0x1ul){ |
| return true; |
| } |
| if (*(uint32_t *)0x10000134ul == 0x2ul){ |
| return true; |
| } |
| } |
| |
| return true; |
| } |
| |
| |
| static bool errata_66(void) |
| { |
| if (*(uint32_t *)0x10000130ul == 0x8ul){ |
| if (*(uint32_t *)0x10000134ul == 0x0ul){ |
| return true; |
| } |
| if (*(uint32_t *)0x10000134ul == 0x1ul){ |
| return true; |
| } |
| if (*(uint32_t *)0x10000134ul == 0x2ul){ |
| return true; |
| } |
| } |
| |
| return true; |
| } |
| |
| |
| static bool errata_98(void) |
| { |
| if (*(uint32_t *)0x10000130ul == 0x8ul){ |
| if (*(uint32_t *)0x10000134ul == 0x0ul){ |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| |
| static bool errata_103(void) |
| { |
| if (*(uint32_t *)0x10000130ul == 0x8ul){ |
| if (*(uint32_t *)0x10000134ul == 0x0ul){ |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| |
| static bool errata_115(void) |
| { |
| if (*(uint32_t *)0x10000130ul == 0x8ul){ |
| if (*(uint32_t *)0x10000134ul == 0x0ul){ |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| |
| static bool errata_120(void) |
| { |
| if (*(uint32_t *)0x10000130ul == 0x8ul){ |
| if (*(uint32_t *)0x10000134ul == 0x0ul){ |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| |
| static bool errata_136(void) |
| { |
| if (*(uint32_t *)0x10000130ul == 0x8ul){ |
| if (*(uint32_t *)0x10000134ul == 0x0ul){ |
| return true; |
| } |
| if (*(uint32_t *)0x10000134ul == 0x1ul){ |
| return true; |
| } |
| if (*(uint32_t *)0x10000134ul == 0x2ul){ |
| return true; |
| } |
| } |
| |
| return true; |
| } |
| |
| /*lint --flb "Leave library region" */ |
