esp8266: New port of Micro Python to ESP8266 wifi module.

1 files changed, 145 insertions, 0 deletions

diff --git a/esp8266/pybstdio.c b/esp8266/pybstdio.c
new file mode 100644
index 0000000000..1b611486c6
--- /dev/null
+++ b/esp8266/pybstdio.c
@@ -0,0 +1,145 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Damien P. George
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+
+#include "mpconfig.h"
+#include "misc.h"
+#include "qstr.h"
+#include "misc.h"
+#include "obj.h"
+#include "stream.h"
+#include "pybstdio.h"
+#include MICROPY_HAL_H
+
+void stdout_tx_str(const char *str) {
+    stdout_tx_strn(str, strlen(str));
+}
+
+void stdout_tx_strn(const char *str, mp_uint_t len) {
+    mp_hal_uart0_write_strn(str, len);
+}
+
+void stdout_tx_strn_cooked(const char *str, mp_uint_t len) {
+    mp_hal_uart0_write_strn_cooked(str, len);
+}
+
+int stdin_rx_chr(void) {
+    for (;;) {
+        int c = mp_hal_uart0_rx_chr();
+        if (c != -1) {
+            return c;
+        }
+        mp_hal_udelay(1);
+        mp_hal_feed_watchdog();
+    }
+}
+
+/******************************************************************************/
+// Micro Python bindings
+
+#define STDIO_FD_IN  (0)
+#define STDIO_FD_OUT (1)
+#define STDIO_FD_ERR (2)
+
+typedef struct _pyb_stdio_obj_t {
+    mp_obj_base_t base;
+    int fd;
+} pyb_stdio_obj_t;
+
+void stdio_obj_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
+    pyb_stdio_obj_t *self = self_in;
+    print(env, "<io.FileIO %d>", self->fd);
+}
+
+STATIC mp_uint_t stdio_read(mp_obj_t self_in, void *buf, mp_uint_t size, int *errcode) {
+    pyb_stdio_obj_t *self = self_in;
+    if (self->fd == STDIO_FD_IN) {
+        for (uint i = 0; i < size; i++) {
+            int c = stdin_rx_chr();
+            if (c == '\r') {
+                c = '\n';
+            }
+            ((byte*)buf)[i] = c;
+        }
+        return size;
+    } else {
+        *errcode = EPERM;
+        return MP_STREAM_ERROR;
+    }
+}
+
+STATIC mp_uint_t stdio_write(mp_obj_t self_in, const void *buf, mp_uint_t size, int *errcode) {
+    pyb_stdio_obj_t *self = self_in;
+    if (self->fd == STDIO_FD_OUT || self->fd == STDIO_FD_ERR) {
+        stdout_tx_strn_cooked(buf, size);
+        return size;
+    } else {
+        *errcode = EPERM;
+        return MP_STREAM_ERROR;
+    }
+}
+
+STATIC mp_obj_t stdio_obj___exit__(mp_uint_t n_args, const mp_obj_t *args) {
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(stdio_obj___exit___obj, 4, 4, stdio_obj___exit__);
+
+STATIC const mp_map_elem_t stdio_locals_dict_table[] = {
+    { MP_OBJ_NEW_QSTR(MP_QSTR_read), (mp_obj_t)&mp_stream_read_obj },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_readall), (mp_obj_t)&mp_stream_readall_obj },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_readline), (mp_obj_t)&mp_stream_unbuffered_readline_obj},
+    { MP_OBJ_NEW_QSTR(MP_QSTR_write), (mp_obj_t)&mp_stream_write_obj },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_close), (mp_obj_t)&mp_identity_obj },
+    { MP_OBJ_NEW_QSTR(MP_QSTR___del__), (mp_obj_t)&mp_identity_obj },
+    { MP_OBJ_NEW_QSTR(MP_QSTR___enter__), (mp_obj_t)&mp_identity_obj },
+    { MP_OBJ_NEW_QSTR(MP_QSTR___exit__), (mp_obj_t)&stdio_obj___exit___obj },
+};
+
+STATIC MP_DEFINE_CONST_DICT(stdio_locals_dict, stdio_locals_dict_table);
+
+STATIC const mp_stream_p_t stdio_obj_stream_p = {
+    .read = stdio_read,
+    .write = stdio_write,
+    .is_text = true,
+};
+
+STATIC const mp_obj_type_t stdio_obj_type = {
+    { &mp_type_type },
+    .name = MP_QSTR_FileIO,
+    .print = stdio_obj_print,
+    .getiter = mp_identity,
+    .iternext = mp_stream_unbuffered_iter,
+    .stream_p = &stdio_obj_stream_p,
+    .locals_dict = (mp_obj_t)&stdio_locals_dict,
+};
+
+const pyb_stdio_obj_t mp_sys_stdin_obj = {{&stdio_obj_type}, .fd = STDIO_FD_IN};
+const pyb_stdio_obj_t mp_sys_stdout_obj = {{&stdio_obj_type}, .fd = STDIO_FD_OUT};
+const pyb_stdio_obj_t mp_sys_stderr_obj = {{&stdio_obj_type}, .fd = STDIO_FD_ERR};