#include "gd32f10x.h"
#include "gd32f10x_libopt.h"
#include "systick.h"
void T0_init(void)
{
timer_oc_parameter_struct timer_ocintpara;
timer_parameter_struct timer_initpara;
//************************IO config*****************************
rcu_periph_clock_enable(RCU_GPIOB);
rcu_periph_clock_enable(RCU_AF);
/*Configure PA8 as alternate function*/
gpio_init( GPIOB, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_0);
rcu_periph_clock_enable(RCU_TIMER0);
timer_deinit(TIMER0);
/* TIMER0 configuration */
timer_initpara.prescaler =108-1;
timer_initpara.alignedmode = TIMER_COUNTER_EDGE;
timer_initpara.counterdirection = TIMER_COUNTER_UP;
timer_initpara.period = 16000-1;
timer_initpara.clockdivision = TIMER_CKDIV_DIV1;
timer_initpara.repetitioncounter = 0;
timer_init(TIMER0,&timer_initpara);
/* CH1 configuration in PWM mode1 */
timer_ocintpara.ocpolarity = TIMER_OC_POLARITY_HIGH;
timer_ocintpara.outputstate = TIMER_CCX_ENABLE;
timer_ocintpara.ocnpolarity = TIMER_OCN_POLARITY_HIGH;
timer_ocintpara.outputnstate = TIMER_CCXN_DISABLE;
timer_ocintpara.ocidlestate = TIMER_OC_IDLE_STATE_LOW;
timer_ocintpara.ocnidlestate = TIMER_OCN_IDLE_STATE_LOW;
timer_channel_output_config(TIMER0,TIMER_CH_1,&timer_ocintpara);
/* CH1 configuration in PWM mode1,duty cycle 25% */
timer_channel_output_pulse_value_config(TIMER0,TIMER_CH_1,9999);
timer_channel_output_mode_config(TIMER0,TIMER_CH_1,TIMER_OC_MODE_PWM0);
timer_channel_output_shadow_config(TIMER0,TIMER_CH_1,TIMER_OC_SHADOW_DISABLE);
timer_primary_output_config(TIMER0,ENABLE);
/* auto-reload preload enable */
timer_auto_reload_shadow_enable(TIMER0);
/* auto-reload preload enable */
timer_enable(TIMER0);
}
int main(void)
{
rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV1);//AHB主頻是1分頻
systick_config();//系統主頻108MHZ,采用外部晶振,由兩個宏決定(__SYSTEM_CLOCK_108M_PLL_HXTAL與HXTAL_VALUE)
T0_init();
while(1)
{
}
}
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