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https://github.com/EFeru/hoverboard-sideboard-hack-GD.git
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71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
/*!
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\file main.c
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\brief comparator trigger interrupt using an external interrupt line
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*/
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/*
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Copyright (C) 2017 GigaDevice
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2014-12-26, V1.0.0, platform GD32F1x0(x=3,5)
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2016-01-15, V2.0.0, platform GD32F1x0(x=3,5,7,9)
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2016-04-30, V3.0.0, firmware update for GD32F1x0(x=3,5,7,9)
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2017-06-19, V3.1.0, firmware update for GD32F1x0(x=3,5,7,9)
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*/
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#include "gd32f1x0.h"
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#include <stdio.h>
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#include "gd32f1x0_eval.h"
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void led_config(void);
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/*!
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\brief main function
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\param[in] none
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\param[out] none
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\retval none
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*/
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int main(void)
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{
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/* configure leds */
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led_config();
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/* enable GPIOA clock */
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rcu_periph_clock_enable(RCU_GPIOA);
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/* configure PA1 as comparator input */
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gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ,GPIO_PIN_1);
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gpio_mode_set(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_PULLUP, GPIO_PIN_1);
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/* enable comparator clock */
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rcu_periph_clock_enable(RCU_CFGCMP);
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/* configure CMP0 */
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cmp_mode_init(CMP0, CMP_VERYLOWSPEED, CMP_1_4VREFINT, CMP_HYSTERESIS_NO);
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cmp_output_init(CMP0, CMP_OUTPUT_NONE, CMP_OUTPUT_POLARITY_NOINVERTED);
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/* initialize exti line21 */
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exti_init(EXTI_21, EXTI_INTERRUPT, EXTI_TRIG_RISING);
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/* configure ADC_CMP NVIC */
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nvic_irq_enable(ADC_CMP_IRQn, 0, 0);
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/* enable CMP0 */
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cmp_enable(CMP0);
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while(1);
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}
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/*!
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\brief configure the leds
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\param[in] none
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\param[out] none
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\retval none
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*/
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void led_config(void)
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{
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gd_eval_led_init(LED1);
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gd_eval_led_init(LED2);
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gd_eval_led_init(LED3);
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gd_eval_led_init(LED4);
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}
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