[GigaDevice GD32F310 Review] +KEY expansion and parameter settings

jinglixixi

[GigaDevice GD32F310 Review] +KEY expansion and parameter settings [Copy link]

Since there is only one user key on board, it is very limited when setting parameters. For this reason, it can be equipped with a membrane soft key for key expansion. The membrane key has a total of 4 key positions to meet the needs of general parameter settings. Its connection form is shown in the figure.

Key Extensions

The pins to which this button is connected are:

K1---PA6

K2---PA7

K3---PB0

K4---PB1

The corresponding button initialization function is:

void key_init(void)
{
 rcu_periph_clock_enable(RCU_GPIOA);
 rcu_periph_clock_enable(RCU_CFGCMP);
 gpio_mode_set(GPIOA, GPIO_MODE_INPUT, GPIO_PUPD_PULLUP, GPIO_PIN_6|GPIO_PIN_7);
rcu_periph_clock_enable(RCU_GPIOB);
 gpio_mode_set(GPIOB, GPIO_MODE_INPUT, GPIO_PUPD_PULLUP, GPIO_PIN_0|GPIO_PIN_1);
}

The functions equipped with key states are:

uint8_t key1_state_get(void)
{
 return gpio_input_bit_get(GPIOA,GPIO_PIN_6);
}

uint8_t key2_state_get(void)
{
 return gpio_input_bit_get(GPIOA,GPIO_PIN_7);
}

uint8_t key3_state_get(void)
{
 return gpio_input_bit_get(GPIOB,GPIO_PIN_0);
}

uint8_t key4_state_get(void)
{
 return gpio_input_bit_get(GPIOB,GPIO_PIN_1);
}

The main test program to implement RTC parameter settings is:

int main(void)
{
 uint16_t i=0,j=0,k=0;
systick_config();
 rcu_periph_clock_enable(RCU_GPIOA);
 gpio_mode_set(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_1);
 gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_1);
 gpio_bit_reset(GPIOA, GPIO_PIN_1);
 gd_eval_led_init(LED1);
rcu_periph_clock_enable(RCU_GPIOB);
gpio_mode_set(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_PULLUP, GPIO_PIN_6|GPIO_PIN_7);
 gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_6|GPIO_PIN_7);
 gpio_bit_reset(GPIOB, GPIO_PIN_6);
 gpio_bit_reset(GPIOB, GPIO_PIN_7);
OLED_Init();
 OLED_Clear();
 OLED_ShowString(20,0,"GD32F310G",16);
 OLED_ShowString(20,2,"OLED & RTC ",16);
OLED_ShowString(20,4," : :",16);
OLED_ShowNum(68,4,i,2,16);
 key_init();
delay_1ms(100);
while(1){
 if(RESET == key1_state_get()){
 i=i+1;
delay_1ms(50);
 while(RESET == key1_state_get());
 }
OLED_ShowNum(68,4,i,2,16);
 if(RESET == key4_state_get()){
 j=j+1;
delay_1ms(50);
 while(RESET == key4_state_get());
 }
OLED_ShowNum(44,4,j,2,16);
 if(RESET == key3_state_get()){
 k=k+1;
delay_1ms(50);
 while(RESET == key3_state_get());
 }
OLED_ShowNum(20,4,k,2,16);
 delay_1ms(50);
 }
}

In this way, you can use this button to set the RTC test value.

lugl4313820

There are quite a few tools, I look forward to your wonderful works!

jinglixixi

lugl4313820 posted on 2022-5-9 22:05 There are quite a few tools, looking forward to your wonderful works!

Haha, they are all old things at the bottom of the box.