问答

#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; rcu_periph_clock_enable(RCU_GPIOB); rcu_periph_clock_enable(RCU_AF); 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); systick_config(); T0_init(); while(1) { } }