|
|
@@ -0,0 +1,246 @@
|
|
|
+/*
|
|
|
+ * This file is part of the MicroPython project, http://micropython.org/
|
|
|
+ *
|
|
|
+ * The MIT License (MIT)
|
|
|
+ *
|
|
|
+ * Copyright (c) 2018 SummerGift <zhangyuan@rt-thread.com>
|
|
|
+ *
|
|
|
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
+ * of this software and associated documentation files (the "Software"), to deal
|
|
|
+ * in the Software without restriction, including without limitation the rights
|
|
|
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
+ * copies of the Software, and to permit persons to whom the Software is
|
|
|
+ * furnished to do so, subject to the following conditions:
|
|
|
+ *
|
|
|
+ * The above copyright notice and this permission notice shall be included in
|
|
|
+ * all copies or substantial portions of the Software.
|
|
|
+ *
|
|
|
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
|
+ * THE SOFTWARE.
|
|
|
+ */
|
|
|
+#ifdef MICROPYTHON_USING_MACHINE_UART
|
|
|
+
|
|
|
+#include <stdio.h>
|
|
|
+#include <string.h>
|
|
|
+
|
|
|
+#include "py/runtime.h"
|
|
|
+#include "py/mphal.h"
|
|
|
+#include "py/mperrno.h"
|
|
|
+#include "py/stream.h"
|
|
|
+
|
|
|
+#include <stdarg.h>
|
|
|
+#include "machine_uart.h"
|
|
|
+
|
|
|
+STATIC void machine_uart_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
|
|
|
+ machine_uart_obj_t *self = (machine_uart_obj_t*) self_in;
|
|
|
+ mp_printf(print, "uart( device port : %s,baud_rate = %d, data_bits = %d, parity = %d, stop_bits = %d )",
|
|
|
+ self->uart_device->parent.parent.name,
|
|
|
+ self->uart_device->config.baud_rate,
|
|
|
+ self->uart_device->config.data_bits,
|
|
|
+ self->uart_device->config.parity,
|
|
|
+ self->uart_device->config.stop_bits);
|
|
|
+}
|
|
|
+
|
|
|
+STATIC mp_obj_t machine_uart_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
|
|
|
+ mp_arg_check_num(n_args, n_kw, 1, MP_OBJ_FUN_ARGS_MAX, true);
|
|
|
+ char uart_dev_name[RT_NAME_MAX];
|
|
|
+ snprintf(uart_dev_name, sizeof(uart_dev_name), "uart%d", mp_obj_get_int(args[0]));
|
|
|
+
|
|
|
+ struct rt_serial_device *rt_serial_device = (struct rt_serial_device *) rt_device_find(uart_dev_name);
|
|
|
+ if (rt_serial_device == RT_NULL || rt_serial_device->parent.type != RT_Device_Class_Char) {
|
|
|
+ rt_kprintf("ERROR: UART device %s not found!\n", uart_dev_name);
|
|
|
+ nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "UART(%s) doesn't exist", uart_dev_name));
|
|
|
+ }
|
|
|
+
|
|
|
+ // create new uart object
|
|
|
+ machine_uart_obj_t *self = m_new_obj(machine_uart_obj_t);
|
|
|
+ self->base.type = &machine_uart_type;
|
|
|
+ self->uart_device = rt_serial_device;
|
|
|
+ return (mp_obj_t) self;
|
|
|
+}
|
|
|
+
|
|
|
+/// \method init(baudrate, bits=8, parity=None, stop=1, *, timeout=1000, timeout_char=0, flow=0, read_buf_len=64)
|
|
|
+///
|
|
|
+/// Initialise the UART bus with the given parameters:
|
|
|
+///
|
|
|
+/// - `baudrate` is the clock rate.
|
|
|
+/// - `bits` is the number of bits per byte, 7, 8 or 9.
|
|
|
+/// - `parity` is the parity, `None`, 0 (even) or 1 (odd).
|
|
|
+/// - `stop` is the number of stop bits, 1 or 2.
|
|
|
+/// - `timeout` is the timeout in milliseconds to wait for the first character.
|
|
|
+/// - `timeout_char` is the timeout in milliseconds to wait between characters.
|
|
|
+/// - `flow` is RTS | CTS where RTS == 256, CTS == 512
|
|
|
+/// - `read_buf_len` is the character length of the read buffer (0 to disable).
|
|
|
+///
|
|
|
+STATIC mp_obj_t machine_uart_init_helper(machine_uart_obj_t *self, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
|
|
|
+ static const mp_arg_t allowed_args[] = {
|
|
|
+ { MP_QSTR_baudrate, MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = 9600} },
|
|
|
+ { MP_QSTR_bits, MP_ARG_INT, {.u_int = 8} },
|
|
|
+ { MP_QSTR_parity, MP_ARG_OBJ, {.u_obj = mp_const_none} },
|
|
|
+ { MP_QSTR_stop, MP_ARG_INT, {.u_int = 1} },
|
|
|
+ { MP_QSTR_flow, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} }, // rt-thread does not support
|
|
|
+ { MP_QSTR_timeout, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 1000} },
|
|
|
+ { MP_QSTR_timeout_char, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
|
|
|
+ { MP_QSTR_read_buf_len, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 64} },
|
|
|
+ };
|
|
|
+
|
|
|
+ // parse args
|
|
|
+ struct {
|
|
|
+ mp_arg_val_t baudrate, bits, parity, stop, flow, timeout, timeout_char, read_buf_len;
|
|
|
+ } args;
|
|
|
+ mp_arg_parse_all(n_args, pos_args, kw_args,
|
|
|
+ MP_ARRAY_SIZE(allowed_args), allowed_args, (mp_arg_val_t*)&args);
|
|
|
+
|
|
|
+ // set the UART configuration values
|
|
|
+ struct rt_serial_device *uart_p = self->uart_device;
|
|
|
+ struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
|
|
|
+
|
|
|
+ // baudrate
|
|
|
+ config.baud_rate = args.baudrate.u_int;
|
|
|
+
|
|
|
+ // parity
|
|
|
+ mp_int_t bits = args.bits.u_int;
|
|
|
+ if (args.parity.u_obj == mp_const_none) {
|
|
|
+ config.parity = PARITY_NONE;
|
|
|
+ } else {
|
|
|
+ mp_int_t parity = mp_obj_get_int(args.parity.u_obj);
|
|
|
+ config.parity = (parity & 1) ? PARITY_ODD : PARITY_EVEN;
|
|
|
+ //bits += 1; // STs convention has bits including parity, not all mcu
|
|
|
+ }
|
|
|
+
|
|
|
+ // number of bits
|
|
|
+ if (bits == 8) {
|
|
|
+ config.data_bits = DATA_BITS_8;
|
|
|
+ } else if (bits == 9) {
|
|
|
+ config.data_bits = DATA_BITS_9;
|
|
|
+ } else if (bits == 7) {
|
|
|
+ config.data_bits = DATA_BITS_7;
|
|
|
+ } else {
|
|
|
+ mp_raise_ValueError("unsupported combination of bits and parity");
|
|
|
+ }
|
|
|
+
|
|
|
+ // stop bits
|
|
|
+ switch (args.stop.u_int) {
|
|
|
+ case 1: config.stop_bits = STOP_BITS_1; break;
|
|
|
+ default: config.stop_bits = STOP_BITS_2; break;
|
|
|
+ }
|
|
|
+
|
|
|
+ //buffer size
|
|
|
+ config.bufsz = args.read_buf_len.u_int;
|
|
|
+
|
|
|
+ rt_device_control((struct rt_device *) uart_p, RT_DEVICE_CTRL_CONFIG, &config);
|
|
|
+ return mp_const_none;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+STATIC mp_obj_t machine_uart_init(size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
|
|
|
+ return machine_uart_init_helper(args[0], n_args - 1, args + 1, kw_args);
|
|
|
+}
|
|
|
+STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_uart_init_obj, 1, machine_uart_init);
|
|
|
+
|
|
|
+STATIC mp_obj_t machine_uart_deinit(mp_obj_t self_in) {
|
|
|
+ return mp_const_none;
|
|
|
+}
|
|
|
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_uart_deinit_obj, machine_uart_deinit);
|
|
|
+
|
|
|
+#define RETRY_TIMES 500
|
|
|
+
|
|
|
+STATIC mp_obj_t machine_uart_writechar(mp_obj_t self_in, mp_obj_t char_in) {
|
|
|
+ machine_uart_obj_t *self = self_in;
|
|
|
+ uint16_t data = mp_obj_get_int(char_in);
|
|
|
+ rt_size_t len = 0;
|
|
|
+ rt_uint32_t timeout = 0;
|
|
|
+ do
|
|
|
+ {
|
|
|
+ len = rt_device_write((struct rt_device *)(self->uart_device), 0, &data, 1);
|
|
|
+ timeout++;
|
|
|
+ }
|
|
|
+ while (len != 1 && timeout < RETRY_TIMES);
|
|
|
+
|
|
|
+ return mp_const_none;
|
|
|
+}
|
|
|
+STATIC MP_DEFINE_CONST_FUN_OBJ_2(machine_uart_writechar_obj, machine_uart_writechar);
|
|
|
+
|
|
|
+#define UART_RX_EVENT (1 << 0)
|
|
|
+static struct rt_event event;
|
|
|
+
|
|
|
+STATIC mp_obj_t machine_uart_readchar(mp_obj_t self_in) {
|
|
|
+ machine_uart_obj_t *self = self_in;
|
|
|
+ rt_uint32_t e;
|
|
|
+ rt_uint8_t ch;
|
|
|
+
|
|
|
+ while (rt_device_read((struct rt_device *)(self->uart_device), 0, &ch, 1) != 1) {
|
|
|
+ rt_event_recv(&event, UART_RX_EVENT, RT_EVENT_FLAG_AND |
|
|
|
+ RT_EVENT_FLAG_CLEAR, RT_WAITING_FOREVER, &e);
|
|
|
+ }
|
|
|
+
|
|
|
+ return MP_OBJ_NEW_SMALL_INT(ch);
|
|
|
+}
|
|
|
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_uart_readchar_obj, machine_uart_readchar);
|
|
|
+
|
|
|
+STATIC const mp_rom_map_elem_t machine_uart_locals_dict_table[] = {
|
|
|
+ // instance methods
|
|
|
+
|
|
|
+ { 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_any), MP_ROM_PTR(&machine_uart_any_obj) },
|
|
|
+
|
|
|
+ /// \method read([nbytes])
|
|
|
+ { MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mp_stream_read_obj) },
|
|
|
+ /// \method readline()
|
|
|
+ { MP_ROM_QSTR(MP_QSTR_readline), MP_ROM_PTR(&mp_stream_unbuffered_readline_obj)},
|
|
|
+ /// \method readinto(buf[, nbytes])
|
|
|
+ { MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&mp_stream_readinto_obj) },
|
|
|
+ /// \method write(buf)
|
|
|
+ { MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mp_stream_write_obj) },
|
|
|
+
|
|
|
+ { MP_ROM_QSTR(MP_QSTR_writechar), MP_ROM_PTR(&machine_uart_writechar_obj) },
|
|
|
+ { MP_ROM_QSTR(MP_QSTR_readchar), MP_ROM_PTR(&machine_uart_readchar_obj) },
|
|
|
+// { MP_ROM_QSTR(MP_QSTR_sendbreak), MP_ROM_PTR(&pyb_uart_sendbreak_obj) },
|
|
|
+
|
|
|
+// class constants
|
|
|
+// { MP_ROM_QSTR(MP_QSTR_RTS), MP_ROM_INT(UART_HWCONTROL_RTS) },
|
|
|
+// { MP_ROM_QSTR(MP_QSTR_CTS), MP_ROM_INT(UART_HWCONTROL_CTS) },
|
|
|
+};
|
|
|
+STATIC MP_DEFINE_CONST_DICT(machine_uart_locals_dict, machine_uart_locals_dict_table);
|
|
|
+
|
|
|
+STATIC mp_uint_t machine_uart_read(mp_obj_t self_in, void *buf_in, mp_uint_t size, int *errcode) {
|
|
|
+ machine_uart_obj_t *self = self_in;
|
|
|
+ byte *buf = buf_in;
|
|
|
+ return rt_device_read((struct rt_device *)(self->uart_device), -1, buf, size);
|
|
|
+}
|
|
|
+
|
|
|
+STATIC mp_uint_t machine_uart_write(mp_obj_t self_in, const void *buf_in, mp_uint_t size, int *errcode) {
|
|
|
+ machine_uart_obj_t *self = self_in;
|
|
|
+ const byte *buf = buf_in;
|
|
|
+ return rt_device_write((struct rt_device *)(self->uart_device), -1, buf, size);
|
|
|
+}
|
|
|
+
|
|
|
+STATIC mp_uint_t machine_uart_ioctl(mp_obj_t self_in, mp_uint_t request, mp_uint_t arg, int *errcode) {
|
|
|
+ return NULL;
|
|
|
+}
|
|
|
+
|
|
|
+STATIC const mp_stream_p_t uart_stream_p = {
|
|
|
+ .read = machine_uart_read,
|
|
|
+ .write = machine_uart_write,
|
|
|
+ .ioctl = machine_uart_ioctl,
|
|
|
+ .is_text = false,
|
|
|
+};
|
|
|
+
|
|
|
+const mp_obj_type_t machine_uart_type = {
|
|
|
+ { &mp_type_type },
|
|
|
+ .name = MP_QSTR_UART,
|
|
|
+ .print = machine_uart_print,
|
|
|
+ .make_new = machine_uart_make_new,
|
|
|
+ .getiter = mp_identity_getiter,
|
|
|
+ .iternext = mp_stream_unbuffered_iter,
|
|
|
+ .protocol = &uart_stream_p,
|
|
|
+ .locals_dict = (mp_obj_dict_t*)&machine_uart_locals_dict,
|
|
|
+};
|
|
|
+
|
|
|
+#endif // MICROPYTHON_USING_MACHINE_UART
|
朱天龙 (Armink)