4G04_MCU/driver/hal_clk_func.c

#include "hal_clk_func.h"

#include "hc32_ll_clk.h"
#include <string.h>
#include <stdio.h>
#include "hal_uart.h"
#include "hc32_ll_sram.h"
#include "hc32_ll_efm.h"

int fputc(int ch, FILE *f)
{
  (void)f;
	USART_UART_Trans(CM_USART2,&ch,1,0xff);
	return ch;
}

void sys_clk_init(void)
{
    stc_clock_xtal_init_t stcXtalInit;
    stc_clock_pll_init_t stcPLLHInit;

    /* PCLK0, HCLK Max 200MHz */
    /* PCLK1, PCLK4, EX BUS Max 100MHz */
    /* PCLK2 Max 75MHz */
    /* PCLK3 Max 50MHz */
    CLK_SetClockDiv(CLK_BUS_CLK_ALL,
                    (CLK_PCLK0_DIV1 | CLK_PCLK1_DIV2 | CLK_PCLK2_DIV4 |
                     CLK_PCLK3_DIV4 | CLK_PCLK4_DIV2 | CLK_EXCLK_DIV2 |
                     CLK_HCLK_DIV1));
 
		GPIO_AnalogCmd(GPIO_PORT_H, GPIO_PIN_00 | GPIO_PIN_01, ENABLE);//PH0,PH1
    (void)CLK_XtalStructInit(&stcXtalInit);
    /* Config Xtal and enable Xtal */
    stcXtalInit.u8Mode   = CLK_XTAL_MD_OSC;
    stcXtalInit.u8Drv    = CLK_XTAL_DRV_ULOW;
    stcXtalInit.u8State  = CLK_XTAL_ON;
    stcXtalInit.u8StableTime = CLK_XTAL_STB_2MS;
    (void)CLK_XtalInit(&stcXtalInit);

    (void)CLK_PLLStructInit(&stcPLLHInit);
    /* VCO = (8/1)*100 = 800MHz*/	
		/* 8MHz/M*N = 8/1*100/4 = 200MHz *///????????
		
		/* 16MHz/M*N = 16/2*100/4 = 200MHz *///????????
    stcPLLHInit.u8PLLState = CLK_PLL_ON;
    stcPLLHInit.PLLCFGR = 0UL;
    stcPLLHInit.PLLCFGR_f.PLLM = 1UL - 1UL;//
    stcPLLHInit.PLLCFGR_f.PLLN = 100UL - 1UL;
    stcPLLHInit.PLLCFGR_f.PLLP = 8UL - 1UL;
    stcPLLHInit.PLLCFGR_f.PLLQ = 8UL - 1UL;
    stcPLLHInit.PLLCFGR_f.PLLR = 8UL - 1UL;
    stcPLLHInit.PLLCFGR_f.PLLSRC = CLK_PLL_SRC_XTAL;
    (void)CLK_PLLInit(&stcPLLHInit);

    SRAM_SetWaitCycle((SRAM_SRAMH | SRAM_SRAM0), SRAM_WAIT_CYCLE0, SRAM_WAIT_CYCLE0);
    /* SRAMB set to 1 Read/Write wait cycle */
    SRAM_SetWaitCycle(SRAM_SRAMB, SRAM_WAIT_CYCLE1, SRAM_WAIT_CYCLE1);
    /* 3 cycles for 150 ~ 200MHz */
    (void)EFM_SetWaitCycle(EFM_WAIT_CYCLE3);
    /* 3 cycles for 150 ~ 200MHz */
    GPIO_SetReadWaitCycle(GPIO_RD_WAIT3);
    CLK_SetSysClockSrc(CLK_SYSCLK_SRC_PLL);
}