Basic GPIO Commands
GPIO_SetInput
GPIO_SetInput(PinNumber)
PinNumber = 0 … 53
Sets GPIO pin PinNumber as an input. The internal pullup-resistor will be set automaticly. Before using a GPIO pin, you should use either GPIOSetInput or GPIOSetOutput.
GPIO_SetOutput
GPIO_SetOutput(PinNumber)
PinNumber = 0 … 53
Sets GPIO pin PinNumber as an output. Before using a GPIO pin, you should use either GPIOSetInput or GPIOSetOutput.
GPIO_Write
GPIO_Write(Pin, Level)
Pin = 0 … 53
Level = 0 or 1
If Pin is configured as output, the voltage Level can be set to ground (low) or +3.3V (high).
GPIO_Write(4, 0) 'Sets pin 4 to low (ground)
GPIO_Write(4, 1) 'Sets pin 4 to high (+3.3V)
GPIO_Read
Status = GPIO_Read(Pin)
Pin = 0 … 53
Status = 0 or 1
If Pin is configured as input, the voltage Level can be read. If the Pin is at ground (low), Status will be 1. If the Pin is at +3.3V (high) Status will be 0.
Status = GPIO_Read(4) 'Reads the voltage level of pin 4
GPIO_Trigger
GPIO_Trigger(Pin, Duration, Level)
Pin = 0 … 53
Duration = 1 … 100
Level = 0 or 1
If Pin is configured as output, a trigger pulse at Pin will be emitted with a Duration in microseconds and a Level of low or high.
GPIO_Trigger(4, 50, 1) 'A 50 µs Trigger pulse at pin 4 with +3.3V (high)
GPIO_Pwm
GPIO_Pwm(Pin, PWMLevel)
Pin = 0 … 53
PWMLevel = 0 … 255
If Pin is configured as output, a PWM-signal (Pules Width Modulation) will be emitted to Pin with a duty cycle of PWMLevel. PWMLevel can be a value from 0 to 255.
GPIO_Pwm(4, 128) 'Sets PWM with a duty cycle of 50% to pin 4
GPIO_Initialise - Experts
GPIO_Initialise()
When importing the plugin, gpio access will be automatically initialized. If you want to manually initialize gpio access, use this function. Useful if you terminated the access manually with gpio_terminate().
GPIO_Terminate - Experts
GPIO_Terminate()
When closing a SmallBASIC program, gpio access will be automatically terminated. If you want to manually terminate gpio access, use this function.