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https://github.com/iNavFlight/inav.git
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188de6443f
This way we avoid having to define it in all the LD scripts. Instead, a new systemBootloaderAddress() function returns the address where the bootloader is mapped for the current MCU.
106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
/*
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* This file is part of Cleanflight.
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*
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* Cleanflight is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Cleanflight is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Cleanflight. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#include <string.h>
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#include "platform.h"
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#include "drivers/nvic.h"
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#include "drivers/system.h"
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void SetSysClock(uint8_t underclock);
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void enableGPIOPowerUsageAndNoiseReductions(void)
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{
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RCC_AHBPeriphClockCmd(
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RCC_AHBPeriph_GPIOA |
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RCC_AHBPeriph_GPIOB |
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RCC_AHBPeriph_GPIOC |
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RCC_AHBPeriph_GPIOD |
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RCC_AHBPeriph_GPIOE |
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RCC_AHBPeriph_GPIOF,
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ENABLE
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);
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_StructInit(&GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
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GPIO_InitStructure.GPIO_Pin &= ~(GPIO_Pin_13 | GPIO_Pin_14); // leave JTAG pins alone
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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GPIO_Init(GPIOC, &GPIO_InitStructure);
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GPIO_Init(GPIOD, &GPIO_InitStructure);
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GPIO_Init(GPIOE, &GPIO_InitStructure);
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}
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bool isMPUSoftReset(void)
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{
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if (cachedRccCsrValue & RCC_CSR_SFTRSTF)
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return true;
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else
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return false;
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}
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uint32_t systemBootloaderAddress(void)
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{
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return 0x1FFFD800;
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}
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static void systemTimekeepingSetup(void)
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{
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RCC_ClocksTypeDef clocks;
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RCC_GetClocksFreq(&clocks);
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cycleCounterInit();
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SysTick_Config(clocks.SYSCLK_Frequency / 1000);
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}
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void systemClockSetup(uint8_t cpuUnderclock)
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{
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// Configure the RCC. Note that this should be called only once per boot
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SetSysClock(cpuUnderclock);
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// Re-initialize system timekeeping - CPU clock changed
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systemTimekeepingSetup();
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}
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void systemInit(void)
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{
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checkForBootLoaderRequest();
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// Enable FPU
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SCB->CPACR = (0x3 << (10 * 2)) | (0x3 << (11 * 2));
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// Configure NVIC preempt/priority groups
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NVIC_PriorityGroupConfig(NVIC_PRIORITY_GROUPING);
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// cache RCC->CSR value to use it in isMPUSoftreset() and others
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cachedRccCsrValue = RCC->CSR;
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RCC_ClearFlag();
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enableGPIOPowerUsageAndNoiseReductions();
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memset(extiHandlerConfigs, 0x00, sizeof(extiHandlerConfigs));
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// Pre-setup SysTick and system time - final setup is done in systemClockSetup
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systemTimekeepingSetup();
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}
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