diff options
Diffstat (limited to 'ports/nrf/device/nrf51/system_nrf51822.c')
| -rw-r--r-- | ports/nrf/device/nrf51/system_nrf51822.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/ports/nrf/device/nrf51/system_nrf51822.c b/ports/nrf/device/nrf51/system_nrf51822.c deleted file mode 100644 index 0ad09d5ff..000000000 --- a/ports/nrf/device/nrf51/system_nrf51822.c +++ /dev/null @@ -1,151 +0,0 @@ -/* Copyright (c) 2012 ARM LIMITED - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * * Neither the name of ARM nor the names of its contributors may be used to - * endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER - * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -/* 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_nrf51.h" - -/*lint ++flb "Enter library region" */ - - -#define __SYSTEM_CLOCK (16000000UL) /*!< nRF51 devices use a fixed System Clock Frequency of 16MHz */ - -static bool is_manual_peripheral_setup_needed(void); -static bool is_disabled_in_debug_needed(void); -static bool is_peripheral_domain_setup_needed(void); - - -#if defined ( __CC_ARM ) - uint32_t SystemCoreClock __attribute__((used)) = __SYSTEM_CLOCK; -#elif defined ( __ICCARM__ ) - __root uint32_t SystemCoreClock = __SYSTEM_CLOCK; -#elif defined ( __GNUC__ ) - uint32_t SystemCoreClock __attribute__((used)) = __SYSTEM_CLOCK; -#endif - -void SystemCoreClockUpdate(void) -{ - SystemCoreClock = __SYSTEM_CLOCK; -} - -void SystemInit(void) -{ - /* If desired, switch off the unused RAM to lower consumption by the use of RAMON register. - It can also be done in the application main() function. */ - - /* Prepare the peripherals for use as indicated by the PAN 26 "System: Manual setup is required - to enable the use of peripherals" found at Product Anomaly document for your device found at - https://www.nordicsemi.com/. The side effect of executing these instructions in the devices - that do not need it is that the new peripherals in the second generation devices (LPCOMP for - example) will not be available. */ - if (is_manual_peripheral_setup_needed()) - { - *(uint32_t volatile *)0x40000504 = 0xC007FFDF; - *(uint32_t volatile *)0x40006C18 = 0x00008000; - } - - /* Disable PROTENSET registers under debug, as indicated by PAN 59 "MPU: Reset value of DISABLEINDEBUG - register is incorrect" found at Product Anomaly document for your device found at - https://www.nordicsemi.com/. There is no side effect of using these instruction if not needed. */ - if (is_disabled_in_debug_needed()) - { - NRF_MPU->DISABLEINDEBUG = MPU_DISABLEINDEBUG_DISABLEINDEBUG_Disabled << MPU_DISABLEINDEBUG_DISABLEINDEBUG_Pos; - } - - /* Execute the following code to eliminate excessive current in sleep mode with RAM retention in nRF51802 devices, - as indicated by PAN 76 "System: Excessive current in sleep mode with retention" found at Product Anomaly document - for your device found at https://www.nordicsemi.com/. */ - if (is_peripheral_domain_setup_needed()){ - if (*(uint32_t volatile *)0x4006EC00 != 1){ - *(uint32_t volatile *)0x4006EC00 = 0x9375; - while (*(uint32_t volatile *)0x4006EC00 != 1){ - } - } - *(uint32_t volatile *)0x4006EC14 = 0xC0; - } -} - - -static bool is_manual_peripheral_setup_needed(void) -{ - if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x1) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0)) - { - if ((((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x00) && (((*(uint32_t *)0xF0000FEC) & 0x000000F0) == 0x0)) - { - return true; - } - if ((((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x10) && (((*(uint32_t *)0xF0000FEC) & 0x000000F0) == 0x0)) - { - return true; - } - if ((((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x30) && (((*(uint32_t *)0xF0000FEC) & 0x000000F0) == 0x0)) - { - return true; - } - } - - return false; -} - -static bool is_disabled_in_debug_needed(void) -{ - if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x1) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0)) - { - if ((((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0x40) && (((*(uint32_t *)0xF0000FEC) & 0x000000F0) == 0x0)) - { - return true; - } - } - - return false; -} - -static bool is_peripheral_domain_setup_needed(void) -{ - if ((((*(uint32_t *)0xF0000FE0) & 0x000000FF) == 0x1) && (((*(uint32_t *)0xF0000FE4) & 0x0000000F) == 0x0)) - { - if ((((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0xA0) && (((*(uint32_t *)0xF0000FEC) & 0x000000F0) == 0x0)) - { - return true; - } - if ((((*(uint32_t *)0xF0000FE8) & 0x000000F0) == 0xD0) && (((*(uint32_t *)0xF0000FEC) & 0x000000F0) == 0x0)) - { - return true; - } - } - - return false; -} - -/*lint --flb "Leave library region" */ |