2018-07-18: v1.0.3 - Add port_register() to expand digital pins with various extra ports like I2C PCF8574.
2017-10-18: v1.0.2 - Add supersede(). Update setup(), input(), output().
2017-09-05: v1.0.0 - Initial commit.
INPUT
OUTPUT
These modes are activ HIGH when pin is +5V and activ LOW when pin is 0V.
INPUT_PULLUP
OPEN_DRAIN
These modes are activ HIGH when pin is 0V and activ LOW when pin is +5V.
| Mode | State | Voltage | Input | Output | Pull-Up | Pull-Down | Open-Drain | N-FET | P-FET | Inv | Dir |
|---|---|---|---|---|---|---|---|---|---|---|---|
| INPUT | LOW | 0V | 0 | 0 | 0 | ||||||
| HIGH | +5V | 1 | 0 | 0 | |||||||
| OUTPUT | LOW | 0V | 0 | 0 | 1 | ||||||
| HIGH | +5V | 1 | 0 | 1 | |||||||
| INPUT_PULLUP | LOW | +5V | 0 | 1 | 1 | 0 | |||||
| HIGH | 0V | 1 | 1 | 1 | 0 | ||||||
| OPEN_DRAIN | LOW | +5V | 0 | 1 | 1 | 1 | 1 | ||||
| HIGH | 0V | 1 | 1 | 1 | 1 | 1 |
#include <jm_Pin.h>
jm_Pin Pin4(4, OPEN_DRAIN);
bool state = false;
word time0 = 0;
void setup()
{
pinMode(13, OUTPUT);
time0 = millis();
}
void loop()
{
state = !state;
Pin4.output(state);
do
digitalWrite(13, Pin4.input());
while ((word)millis() - time0 <= 500);
time0 += 500;
}