Disable pull-up/pull-down when setting pin as input #332
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In `pinMode()` I think it would be better to call `gpio_disable_pulls()` on the ulPin when ulMode == INPUT.
As a case for the modification, consider the following code:
```
#include "pico/stdlib.h"
#define RP_PIN 24
void setup() {
Serial.begin(9600);
pinMode(RP_PIN, INPUT);
while(!Serial) ;
}
void loop() {
Serial.println(digitalRead(RP_PIN));
delay(1000);
}
```
On a generic RP2040 board, where GPIO24 is used as generic input, the above would not work in cases where the input is weakly driven up.
Adding `gpio_disable_pulls(RP_PIN);` after `pinMode(RP_PIN, INPUT);` solves the issue.
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In
pinMode()I think it would be better to callgpio_disable_pulls()on the ulPin when ulMode == INPUT.As a case for the modification, consider the following code:
On a generic RP2040 board, where GPIO24 is used as generic input, the above would not work in cases where the input is weakly driven up.
Adding
gpio_disable_pulls(RP_PIN);afterpinMode(RP_PIN, INPUT);solves the issue.