public IESP32 esp32_init(PinName en, PinName io0, PinName tx, PinName rx,
bool debug, PinName rts, PinName cts, int baudrate)
{
if (esp != null)
{
return(esp);
}
Gpio gpio_en = null;
if (en != PinName.NC)
{
var en_obj = new gpio_t();
gpio_en = (Gpio)CreateGpio(ref en_obj, en);
gpio_en.SetDirection(PinDirection.PIN_OUTPUT);
}
Gpio gpio_io0 = null;
if (io0 != PinName.NC)
{
var io0_obj = new gpio_t();
gpio_io0 = (Gpio)CreateGpio(ref io0_obj, io0);
gpio_io0.SetDirection(PinDirection.PIN_OUTPUT);
}
var serial_obj = new serial_t();
var serial = (Serial)CreateSerial(ref serial_obj, tx, rx, rts, cts);
serial.SetBaudRate(baudrate);
esp = new ESP32Driver(this, gpio_en, gpio_io0, serial, debug);
return(esp);
}
public void serial_putc(ref serial_t obj, int c)
{
if (!interfaces.TryGetValue(obj.id, out var uif))
{
throw new ArgumentException();
}
((Serial)uif).PutC(c);
}
public int serial_writable(ref serial_t obj)
{
if (!interfaces.TryGetValue(obj.id, out var uif))
{
throw new ArgumentException();
}
return(((Serial)uif).IsWritable() ? 1 : 0);
}
public void serial_format(ref serial_t obj, int data_bits, SerialParity parity, int stop_bits)
{
if (!interfaces.TryGetValue(obj.id, out var uif))
{
throw new ArgumentException();
}
((Serial)uif).SetFormat(data_bits, parity, stop_bits);
}
public int serial_getc(ref serial_t obj)
{
if (!interfaces.TryGetValue(obj.id, out var uif))
{
throw new ArgumentException();
}
return(((Serial)uif).GetC());
}
public void serial_baud(ref serial_t obj, int baudrate)
{
if (!interfaces.TryGetValue(obj.id, out var uif))
{
throw new ArgumentException();
}
((Serial)uif).SetBaudRate(baudrate);
}
private void DeleteSerial(ref serial_t obj)
{
if (!interfaces.TryGetValue(obj.id, out var uif))
{
return;
}
pin_if.Remove(((Serial)uif).tx);
pin_if.Remove(((Serial)uif).rx);
interfaces.Remove(obj.id);
}
private IUnitInterface CreateSerial(ref serial_t obj, PinName tx, PinName rx,
PinName rts = PinName.NC, PinName cts = PinName.NC)
{
var p = PinMap.Peripheral(tx, PinMap.PinMap_UART_TX);
if (p == (int)PinName.NC)
{
return(null);
}
var t = PinMap.Peripheral(rx, PinMap.PinMap_UART_RX);
if ((t == (int)PinName.NC) || (p != t))
{
return(null);
}
var r = PinMap.Peripheral(rts, PinMap.PinMap_UART_RTS);
if ((rts != PinName.NC) && ((r == (int)PinName.NC) || (p != r)))
{
return(null);
}
var s = PinMap.Peripheral(cts, PinMap.PinMap_UART_CTS);
if ((cts != PinName.NC) && ((s == (int)PinName.NC) || (p != s)))
{
return(null);
}
if (!interfaces.TryGetValue(obj.id, out var uif))
{
if (pin_if.ContainsKey(tx) || pin_if.ContainsKey(rx))
{
throw new ArgumentException();
}
uif = new Serial((UARTName)p, tx, rx, rts, cts);
obj.id = uif.GetHashCode();
interfaces.Add(obj.id, uif);
}
return(uif);
}
public void serial_free(ref serial_t obj)
{
DeleteSerial(ref obj);
}
public void serial_init(ref serial_t obj, PinName tx, PinName rx)
{
CreateSerial(ref obj, tx, rx);
}