Basic Input/Output

The ARMmbed classes that will be used in this section are:

• DigitalIn  - Configure and control a digital input pin
• DigitalOut - Configure and control a digital output pin 
• BusIn - Flexible way to read multiple DigitalIn pins as one value
• BusOut - Flexible way to write multiple DigitalOut pins as one value
• wait - Wait for a specified time

Further documentation on these classes can be found on the ARMmbed Handbook webpage (https://developer.mbed.org/handbook/Homepage).

The following example programs will demonstrate the principles of basic input, output, and delays:  

• ex1_flash_one_led
• ex2_flash_leds
• ex3_button_led
• ex4_sw_leds
• ex5_sw_leds_pullup
• ex6_sw_leds_truth
• ex7_led_count
• ex8_button_count
• ex9_button_count_debounce