Functions | |
| void | digital_init (void) |
| uint8_t | digital_read_8 () |
| uint8_t | digital_read (uint8_t port) |
The digital inputs on the Happyboard are unfiltered and as such there is "switch bounce" when they are connected to bump-sensors. To compensate for this users should read digital inputs a few times with short delays between readings to ensure accurate sensing.
| void digital_init | ( | void | ) |
Initialize digital ports. Should not be called by user.
| uint8_t digital_read | ( | uint8_t | port | ) |
Return the value of a specific digital port. If the port specified is an analog port (8-23), digital_read() returns the equivalent digital reading - <2.5V: FALSE >=2.5V: TRUE.
| port | port to read (0-23) |
| uint8_t digital_read_8 | ( | ) |
Return the value of all of the digital ports as a single packed byte. The least significant bit is port 0, the most significant is port 7.