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#include "gd32f30x.h"
void rcu_config(void);
/* configure GPIO peripheral */
void gpio_config(void);
/* configure DAC peripheral */
void dac_config(void);
/* configure TIMER peripheral */
void timer5_config(void);
/*!
\brief main function
\param[in] none
\param[out] none
\retval none
*/
int main(void)
{
/* configure RCU peripheral */
rcu_config();
/* configure GPIO peripheral */
gpio_config();
/* configure DAC peripheral */
dac_config();
/* configure TIMER peripheral */
timer5_config();
while(1) {
}
}
void rcu_config(void)
{
/* enable GPIOA clock */
rcu_periph_clock_enable(RCU_GPIOA);
/* enable DAC clock */
rcu_periph_clock_enable(RCU_DAC);
/* enable TIMER clock */
rcu_periph_clock_enable(RCU_TIMER5);
}
void gpio_config(void)
{
/* configure PA4 as DAC output */
gpio_init(GPIOA, GPIO_MODE_AIN, GPIO_OSPEED_50MHZ, GPIO_PIN_4);
}
void dac_config(void)
{
/* initialize DAC */
dac_deinit(DAC0);
/* DAC trigger config */
dac_trigger_source_config(DAC0, DAC_OUT0, DAC_TRIGGER_T5_TRGO);
/* DAC trigger enable */
dac_trigger_enable(DAC0, DAC_OUT0);
/* DAC wave mode config */
dac_wave_mode_config(DAC0, DAC_OUT0, DAC_WAVE_MODE_LFSR);
dac_lfsr_noise_config(DAC0, DAC_OUT0, DAC_LFSR_BITS10_0);
/* DAC enable */
dac_enable(DAC0, DAC_OUT0);
dac_data_set(DAC0, DAC_OUT0, DAC_ALIGN_12B_R, 0x7F0);
}
void timer5_config(void)
{
timer_parameter_struct timer_initpara;
/* TIMER deinitialize */
timer_deinit(TIMER5);
/* TIMER configuration */
timer_struct_para_init(&timer_initpara);
timer_initpara.prescaler = 119;
timer_initpara.alignedmode = TIMER_COUNTER_EDGE;
timer_initpara.counterdirection = TIMER_COUNTER_UP;
timer_initpara.period = 999;
timer_initpara.clockdivision = TIMER_CKDIV_DIV1;
timer_initpara.repetitioncounter = 0;
/* initialize TIMER init parameter struct */
timer_init(TIMER5, &timer_initpara);
/* TIMER master mode output trigger source: Update event */
timer_master_output_trigger_source_select(TIMER5, TIMER_TRI_OUT_SRC_UPDATE);
/* enable TIMER */
timer_enable(TIMER5);
}
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