[Evaluation of Anxinke Bluetooth Development Board PB-02-Kit] KEY and LED Control

jinglixixi

[Evaluation of Anxinke Bluetooth Development Board PB-02-Kit] KEY and LED Control [Copy link]

In the use of GPIO, there is both the output function of controlling the LED light and the input function of identifying the key.

Since there is no dedicated button for user testing on the board, testing can be performed through an external plug-in.

When the external key is connected to pin P31, the statements for configuring and reading the key pin are:

hal_gpio_pin_init(P31, IE);

while(hal_gpio_read(P31));

The main program to control the LED with buttons is:

int app_main(void)
{
       /* Initialize the operating system */
      osal_init_system();
      osal_pwrmgr_device( PWRMGR_BATTERY );
 hal_gpio_pin_init(P0, OEN);
 hal_gpio_write(P0, 1);
 hal_gpio_pin_init(P34, OEN);
 hal_gpio_write(P34, 1);
 hal_gpio_pin_init(P14, OEN);
 hal_gpio_write(P14, 1);
 hal_gpio_pin_init(P31, IE);
 while(1)
 {
                delay(1000);
 hal_gpio_write(P34, 1);
 hal_gpio_write(P0, 1);
 delay(1000);
 hal_gpio_write(P34, 0);
 hal_gpio_write(P0, 0);
  if(hal_gpio_read(P31))
 hal_gpio_write(P14, 1); // G ON
 else
 hal_gpio_write(P14, 0); // G OFF
 }
 /* Start OSAL */
      osal_start_system(); // No Return from here
      return 0;
}

After program download and testing, the control effect is normal.

With the basic usage of GPIO port, you can use GPIO port to simulate I2C communication to drive OLED screen.

Jacktang

GPIO port control and button use are the basis, starting from the 51 single-chip microcomputer learning

Thanks for sharing

jinglixixi

Jacktang posted on 2021-11-25 07:33 GPIO port control and button usage are the basis, starting from the 51 single-chip microcomputer learning, the same is true. Thank you for sharing

Yes, mastering GPIO is the basic skill every time you come into contact with a new type of board, without it you can't get going.

MianQi

Please introduce your development environment.

jinglixixi

MianQi posted on 2021-12-10 15:46 Let me introduce the development environment of the host.

https://bbs.eeworld.com.cn/thread-1186095-1-1.html