add machine_uart readchar and any method

Author: xelll

ports/k210-freertos/mpy_support/standard_lib/machine/machine_uart.c

@@ -112,6 +112,12 @@ mp_uint_t uart_rx_any(machine_uart_obj_t *self)
 	}
 }
 
+mp_obj_t uart_any(machine_uart_obj_t *self)
+{
+	return mp_obj_new_int(uart_rx_any(self));
+}
+MP_DEFINE_CONST_FUN_OBJ_1(machine_uart_any_obj, uart_any);
+
 int uart_rx_irq(void *ctx)
 {
     machine_uart_obj_t *self = ctx;
@@ -237,6 +243,18 @@ int uart_rx_char(machine_uart_obj_t *self)
 	return -1;
 }
 
+mp_obj_t uart_readchar(machine_uart_obj_t *self) 
+{
+	int data = uart_rx_char(self);
+
+	if(data != -1)
+	{
+		return mp_obj_new_bytes(&data,1);
+	}
+	return MP_OBJ_NULL;
+}
+MP_DEFINE_CONST_FUN_OBJ_1(machine_uart_rx_char_obj, uart_rx_char);
+
 int uart_rx_data(machine_uart_obj_t *self,uint8_t* buf_in,uint32_t size) 
 {
 	uint16_t data_num = 0;
@@ -501,7 +519,9 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_uart_deinit_obj, machine_uart_deinit);
 STATIC const mp_rom_map_elem_t machine_uart_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&machine_uart_init_obj) },
     { MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&machine_uart_deinit_obj) },
-    
+
+	{ MP_ROM_QSTR(MP_QSTR_readchar), MP_ROM_PTR(&machine_uart_rx_char_obj)},
+	{ MP_ROM_QSTR(MP_QSTR_any), MP_ROM_PTR(&machine_uart_any_obj)},
     { MP_ROM_QSTR(MP_QSTR_readline), MP_ROM_PTR(&mp_stream_unbuffered_readline_obj)},
     { MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&mp_stream_readinto_obj) },
     { MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mp_stream_write_obj) },