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#include "gd32f30x.h"
#define CONVERT_NUM (10)
#define DAC0_R8DH_ADDRESS (0x40007410)
void rcu_config(void);
/* configure GPIO peripheral */
void gpio_config(void);
/* configure DMA peripheral */
void dma_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 DMA peripheral */
dma_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 DMA clock */
rcu_periph_clock_enable(RCU_DMA1);
/* 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 dma_config(void)
{
dma_parameter_struct dma_struct;
/* clear all the interrupt flags */
dma_flag_clear(DMA1, DMA_CH2, DMA_INTF_GIF);
dma_flag_clear(DMA1, DMA_CH2, DMA_INTF_FTFIF);
dma_flag_clear(DMA1, DMA_CH2, DMA_INTF_HTFIF);
dma_flag_clear(DMA1, DMA_CH2, DMA_INTF_ERRIF);
/* configure the DMA1 channel 2 */
dma_struct.periph_addr = DAC0_R8DH_ADDRESS;
dma_struct.periph_width = DMA_PERIPHERAL_WIDTH_8BIT;
dma_struct.memory_addr = (uint32_t)convertarr;
dma_struct.memory_width = DMA_MEMORY_WIDTH_8BIT;
dma_struct.number = CONVERT_NUM;
dma_struct.priority = DMA_PRIORITY_ULTRA_HIGH;
dma_struct.periph_inc = DMA_PERIPH_INCREASE_DISABLE;
dma_struct.memory_inc = DMA_MEMORY_INCREASE_ENABLE;
dma_struct.direction = DMA_MEMORY_TO_PERIPHERAL;
dma_init(DMA1, DMA_CH2, &dma_struct);
dma_circulation_enable(DMA1, DMA_CH2);
dma_channel_enable(DMA1, DMA_CH2);
}
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_DISABLE);
/* DAC enable */
dac_enable(DAC0, DAC_OUT0);
/* DAC DMA function enable */
dac_dma_enable(DAC0, DAC_OUT0);
}
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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