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#include "clock.h"
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#include "gd32e23x_rcu.h"
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static uint32_t delay;
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/**
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* @brief
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*
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*/
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void Clock_Config(void)
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{
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rcu_deinit();
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rcu_osci_on(RCU_IRC8M); //ʹÓÃÄÚ²¿8MRCʱÖÓ
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rcu_osci_stab_wait(RCU_IRC8M);
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rcu_system_clock_source_config(RCU_CKSYSSRC_PLL); //sysclk is PLL
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rcu_pll_config(RCU_PLLSRC_IRC8M_DIV2, RCU_PLL_MUL12); //8MHz/2 =4MHz PLL =4MHz*12 =48MHz
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rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV1); //AHB 48M
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rcu_apb1_clock_config(RCU_APB1_CKAHB_DIV1); //APB1 48M
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rcu_apb2_clock_config(RCU_APB2_CKAHB_DIV1); //APB2 48M
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rcu_adc_clock_config(RCU_ADCCK_APB2_DIV4); //max 14M,current:48/4=12M
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rcu_usart_clock_config(RCU_USART0SRC_IRC8M); //USART0 8M
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rcu_rtc_clock_config(RCU_RTCSRC_NONE);
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rcu_osci_on(RCU_PLL_CK);
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rcu_osci_stab_wait(RCU_PLL_CK);
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SystemCoreClockUpdate();
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}
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/**
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* @brief
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*
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*/
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void Ostick_config(void)
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{
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/* setup systick timer for 1000Hz interrupts */
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if (SysTick_Config(SYSTEM_CLOCK / 1000U))
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{
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/* capture error */
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while (1)
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;
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}
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/* configure the systick handler priority */
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NVIC_SetPriority(SysTick_IRQn, 0x00);
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}
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/*!
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\brief delay a time in milliseconds
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\param[in] count: count in milliseconds
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\param[out] none
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\retval none
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*/
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void delay_1ms(uint32_t count)
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{
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delay = count;
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while (0 != delay)
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;
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}
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/*!
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\brief delay decrement
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\param[in] none
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\param[out] none
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\retval none
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*/
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void delay_decrement(void)
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{
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if (0 != delay)
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{
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delay--;
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}
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}
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