diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/mdk/system_nrf52840.c')
-rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/mdk/system_nrf52840.c | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/mdk/system_nrf52840.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/mdk/system_nrf52840.c new file mode 100644 index 0000000..12478ba --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/mdk/system_nrf52840.c @@ -0,0 +1,288 @@ +/* + +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" */ |