I am trying to do a very simple gpio_read from an analog input port but without any success.
I am using the b-l072z-lrwan1 board with a simple analog sensor on A2 pin.
gpio_t pin = GPIO_PIN(PORT_A, 4);
int reading = gpio_read(pin);
The value I get is either 16 (when the sensor is connected to the pin), or 0 (when the sensor is not connected). No other values.
As weird as it may sound, I cannot find any kind of example for reading sensor values using gpio read…
Thanks for the help.
gpio_read() will only read a digital value (
LOW -> 0,
HIGH -> any other value).
What you are looking for is the ADC API.
Thank you for the responses. At the end I also had to make change the definition of the board and declare the ADC configuration. Now it works.
At the end I also had to make change the definition of the board and declare the ADC configuration
Nice, do you mind opening a PR for that change ? I think it’s useful. Thanks!
I just made a PR. I hope it is useful. Thank you.