/// <summary>
/// Builds and returns a <see cref="GPIOState"/> from the JSON
/// string returned from the device (GET /*).
/// </summary>
/// <param name="json">JSON configuration/status information</param>
/// <returns>A <see cref="GPIOState"/> containing the values from the JSON string</returns>
internal static GPIOState FromJSONString(string json)
{
//TODO: This code is based off the example from the WebIOPi documentation.
// Need some more real-world examples to verify that this works in all cases/configurations.
var parsedObject = new GPIOState();
var parser = JObject.Parse(json);
parsedObject.UART0_Enabled = (int)parser["UART0"] == 1;
parsedObject.I2C0_Enabled = (int)parser["I2C0"] == 1;
parsedObject.I2C1_Enabled = (int)parser["I2C1"] == 1;
parsedObject.SPI0_Enabled = (int)parser["SPI0"] == 1;
// pins are *not* in a json array but an object:
// "GPIO":{
// "0": { "function": "IN", "value": 1},
// "1": { "function": "IN", "value": 1},
// etc...
var gpio = (JObject)parser["GPIO"];
for (int i = 0; i < 54; i++)
{
var pinItem = gpio[i.ToString()];
parsedObject.PinStatuses.Add(new PinDetails
{
PinNumber = i,
Function = (string)pinItem["function"],
Value = (int)pinItem["value"]
});
}
return(parsedObject);
}
public Task <GPIOState> GetGPIOState()
{
return(Task.FromResult(GPIOState.FromJSONString(ExampleStatus)));
}