83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
/*==============================================================================
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* Инициализация тактирования с использованием бибилотеки PLIB035
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*------------------------------------------------------------------------------
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* ЦНИИ СЭТ, Разваляев Алексей <wot890089@mail.ru>
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*==============================================================================
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* ЦНИИ СЭТ
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*==============================================================================
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*/
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//-- Includes ------------------------------------------------------------------
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#include "periph_config.h"
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__IO uint32_t uwTick; // Milliseconds ticks
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//-- Defines -------------------------------------------------------------------
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//-- Peripheral init functions -------------------------------------------------
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void sysclk_init(void)
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{
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OperationStatus status;
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status = RCU_PLL_AutoConfig(SYSCLK_CORE_CLOCK_MHZ*__MHZ, SYSCLK_Oscil_Type);
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if (status == ERROR)
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{
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Error_Handler();
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}
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SystemCoreClockUpdate();
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RCU_ClkOutConfig(RCU_SysPeriphClk_PLLClk, 1, ENABLE);
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RCU_ClkOutCmd(ENABLE);
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/* Прерывание должно быть каждую миллисекунду:
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Для тактирования N Гц это каждый N / 1000 тик */
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SysTick_Config(SYSCLK_CORE_CLOCK_MHZ*__MHZ/1000);
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}
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uint32_t millis(void)
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{
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return uwTick;
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}
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void millis_inc(void)
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{
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uwTick++;
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}
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uint32_t micros(void)
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{
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return 0;
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}
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void micros_inc(void)
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{
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uwTick++;
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}
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OperationStatus rcu_set_clock_adc(RCU_PeriphClk_TypeDef ClkSrc, float ClkMHz, FunctionalState state)
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{
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RCU_ADCClkCmd(DISABLE);
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uint32_t adc_raw_clock = 0;
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float adc_clock_div = 0;
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switch(ClkSrc)
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{
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case RCU_PeriphClk_OSEClk:
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adc_raw_clock = RCU_GetOSEClkFreq();
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break;
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case RCU_PeriphClk_OSIClk:
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adc_raw_clock = RCU_GetOSIClkFreq();
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break;
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case RCU_PeriphClk_PLLClk:
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adc_raw_clock = RCU_GetPLLClkFreq();
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break;
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case RCU_PeriphClk_PLLDivClk:
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adc_raw_clock = RCU_GetPLLDivClkFreq();
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break;
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}
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adc_clock_div = adc_raw_clock/(ClkMHz*__MHZ);
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if(adc_clock_div < 1)
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return ERROR;
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RCU_ADCClkConfig(ClkSrc, 7, ENABLE); //12.5MHz
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RCU_ADCClkCmd(ENABLE);
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return OK;
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} |