/// \classmethod \constructor(bus, ...)
///
/// Construct a UART object on the given bus id. `bus id` can be 0-1
/// With no additional parameters, the UART object is created but not
/// initialised (it has the settings from the last initialisation of
/// the bus, if any).
/// When only the baud rate is given the UART object is created and
/// initialized with the default configuration of: 8 bit transfers,
/// 1 stop bit, no parity and flow control disabled.
/// See `init` for parameters of initialisation.
/// If extra arguments are given, the bus is initialised with these arguments
/// See `init` for parameters of initialisation.
///
STATIC mp_obj_t pyb_uart_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
// check arguments
mp_arg_check_num(n_args, n_kw, 1, MP_ARRAY_SIZE(pyb_uart_init_args), true);
// work out the uart id
pyb_uart_id_t uart_id = mp_obj_get_int(args[0]);
if (uart_id < PYB_UART_0 || uart_id > PYB_UART_1) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_resource_not_avaliable));
}
// search for an object in the list
pyb_uart_obj_t *self;
if (!(self = pyb_uart_find(uart_id))) {
self = pyb_uart_add(uart_id);
}
if (n_args > 1 || n_kw > 0) {
// start the peripheral
mp_map_t kw_args;
mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
pyb_uart_init_helper(self, n_args - 1, args + 1, &kw_args);
}
return self;
}
/// \classmethod \constructor(bus, ...)
///
/// Construct a UART object on the given bus. `bus` can be 1-6, or 'XA', 'XB', 'YA', or 'YB'.
/// With no additional parameters, the UART object is created but not
/// initialised (it has the settings from the last initialisation of
/// the bus, if any). If extra arguments are given, the bus is initialised.
/// See `init` for parameters of initialisation.
///
/// The physical pins of the UART busses are:
///
/// - `UART(4)` is on `XA`: `(TX, RX) = (X1, X2) = (PA0, PA1)`
/// - `UART(1)` is on `XB`: `(TX, RX) = (X9, X10) = (PB6, PB7)`
/// - `UART(6)` is on `YA`: `(TX, RX) = (Y1, Y2) = (PC6, PC7)`
/// - `UART(3)` is on `YB`: `(TX, RX) = (Y9, Y10) = (PB10, PB11)`
/// - `UART(2)` is on: `(TX, RX) = (X3, X4) = (PA2, PA3)`
STATIC mp_obj_t pyb_uart_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
// check arguments
mp_arg_check_num(n_args, n_kw, 1, MP_OBJ_FUN_ARGS_MAX, true);
// create object
pyb_uart_obj_t *o = m_new_obj(pyb_uart_obj_t);
o->base.type = &pyb_uart_type;
// work out port
o->uart_id = 0;
#if 0
if (MP_OBJ_IS_STR(args[0])) {
const char *port = mp_obj_str_get_str(args[0]);
if (0) {
#if defined(PYBV10)
} else if (strcmp(port, "XA") == 0) {
o->uart_id = PYB_UART_XA;
} else if (strcmp(port, "XB") == 0) {
o->uart_id = PYB_UART_XB;
} else if (strcmp(port, "YA") == 0) {
o->uart_id = PYB_UART_YA;
} else if (strcmp(port, "YB") == 0) {
o->uart_id = PYB_UART_YB;
#endif
} else {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "UART port %s does not exist", port));
}
} else {
o->uart_id = mp_obj_get_int(args[0]);
}
#endif
if (n_args > 1 || n_kw > 0) {
// start the peripheral
mp_map_t kw_args;
mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
pyb_uart_init_helper(o, n_args - 1, args + 1, &kw_args);
}
return o;
}
STATIC mp_obj_t pyb_uart_init(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
return pyb_uart_init_helper(args[0], n_args - 1, args + 1, kw_args);
}
