ports/esp8266/main.c - lite/micropython - Linaro Git Browser

 /*
  * This file is part of the MicroPython project, http://micropython.org/
  *
  * The MIT License (MIT)
  *
  * Copyright (c) 2014 Damien P. George
  * Copyright (c) 2015-2016 Paul Sokolovsky
  *
  * 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 <string.h>

 #include "py/builtin.h"
 #include "py/compile.h"
 #include "py/runtime.h"
 #include "py/stackctrl.h"
 #include "py/mperrno.h"
 #include "py/mphal.h"
 #include "py/gc.h"

 #include "extmod/misc.h"
 #include "extmod/modmachine.h"
 #include "shared/readline/readline.h"
 #include "shared/runtime/pyexec.h"
 #include "gccollect.h"
 #include "user_interface.h"

 #if MICROPY_PY_ESPNOW
 #include "modespnow.h"
 #endif

 static char heap[38 * 1024];

 #if MICROPY_HW_HARD_FAULT_DEBUG

 static void format_hex(uint32_t hex, char *buffer) {
     static const char table[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
     int offset = 7;
     uint32_t value = hex;
     while (offset >= 0) {
         buffer[offset--] = table[value & 0x0F];
         value >>= 4;
     }
 }

 static void print_reset_info(void) {
     struct rst_info *rst_info = system_get_rst_info();
     if ((rst_info->reason == REASON_WDT_RST) || (rst_info->reason == REASON_EXCEPTION_RST) || (rst_info->reason == REASON_SOFT_WDT_RST)) {
         char buffer[8];
         mp_hal_stdout_tx_str("\r\n\r\nThe system restarted due to an error.\r\n\r\nReason: ");
         switch (rst_info->reason) {
             case REASON_WDT_RST:
                 mp_hal_stdout_tx_str("WDT");
                 break;

             case REASON_EXCEPTION_RST:
                 mp_hal_stdout_tx_str("EXCEPTION");
                 break;

             case REASON_SOFT_WDT_RST:
                 mp_hal_stdout_tx_str("SOFT_WDT");
                 break;

             default:
                 assert(!"Should not ever get here.");
                 break;
         }
         mp_hal_stdout_tx_str(" Cause: ");
         format_hex(rst_info->exccause, buffer);
         mp_hal_stdout_tx_strn(buffer, sizeof(buffer));
         mp_hal_stdout_tx_str(" EPC1: ");
         format_hex(rst_info->epc1, buffer);
         mp_hal_stdout_tx_strn(buffer, sizeof(buffer));
         mp_hal_stdout_tx_str(" EPC2: ");
         format_hex(rst_info->epc2, buffer);
         mp_hal_stdout_tx_strn(buffer, sizeof(buffer));
         mp_hal_stdout_tx_str(" EPC3: ");
         format_hex(rst_info->epc3, buffer);
         mp_hal_stdout_tx_strn(buffer, sizeof(buffer));
         mp_hal_stdout_tx_str(" Exception Vector address: ");
         format_hex(rst_info->excvaddr, buffer);
         mp_hal_stdout_tx_strn(buffer, sizeof(buffer));
         mp_hal_stdout_tx_str(" DEPC: ");
         format_hex(rst_info->depc, buffer);
         mp_hal_stdout_tx_strn(buffer, sizeof(buffer));
         mp_hal_stdout_tx_str("\r\n\r\n");
     }
 }

 #endif

 static void mp_reset(void) {
     mp_stack_set_top((void *)0x40000000);
     mp_stack_set_limit(8192);
     mp_hal_init();
     gc_init(heap, heap + sizeof(heap));
     mp_init();
     mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_lib));
     mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_));
     #if MICROPY_EMIT_XTENSA || MICROPY_EMIT_INLINE_XTENSA
     extern void esp_native_code_init(void);
     esp_native_code_init();
     #endif
     pin_init0();
     readline_init0();

     // Activate UART(0) on dupterm slot 1 for the REPL
     {
         mp_obj_t args[2];
         args[0] = MP_OBJ_NEW_SMALL_INT(0);
         args[1] = MP_OBJ_NEW_SMALL_INT(115200);
         args[0] = MP_OBJ_TYPE_GET_SLOT(&machine_uart_type, make_new)(&machine_uart_type, 2, 0, args);
         args[1] = MP_OBJ_NEW_SMALL_INT(1);
         mp_os_dupterm_obj.fun.var(2, args);
     }

     #if MICROPY_PY_ESPNOW
     espnow_deinit(mp_const_none);
     #endif

     #if MICROPY_MODULE_FROZEN
     pyexec_frozen_module("_boot.py", false);
     int ret = pyexec_file_if_exists("boot.py");
     if (pyexec_mode_kind == PYEXEC_MODE_FRIENDLY_REPL && ret != 0) {
         pyexec_file_if_exists("main.py");
     }
     #endif
 }

 void soft_reset(void) {
     gc_sweep_all();
     mp_hal_stdout_tx_str("MPY: soft reboot\r\n");
     mp_hal_delay_us(10000); // allow UART to flush output
     mp_reset();
     #if MICROPY_REPL_EVENT_DRIVEN
     pyexec_event_repl_init();
     #endif
 }

 void init_done(void) {
     // Configure sleep, and put the radio to sleep if no interfaces are active
     wifi_fpm_set_sleep_type(MODEM_SLEEP_T);
     if (wifi_get_opmode() == NULL_MODE) {
         wifi_fpm_open();
         wifi_fpm_do_sleep(0xfffffff);
     }

     #if MICROPY_REPL_EVENT_DRIVEN
     uart_task_init();
     #endif
     mp_reset();
     mp_hal_stdout_tx_str("\r\n");
     #if MICROPY_REPL_EVENT_DRIVEN
     pyexec_event_repl_init();
     #endif

     #if MICROPY_HW_HARD_FAULT_DEBUG
     print_reset_info();
     #endif

     #if !MICROPY_REPL_EVENT_DRIVEN
 soft_reset:
     for (;;) {
         if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
             if (pyexec_raw_repl() != 0) {
                 break;
             }
         } else {
             if (pyexec_friendly_repl() != 0) {
                 break;
             }
         }
     }
     soft_reset();
     goto soft_reset;
     #endif
 }

 void user_init(void) {
     system_timer_reinit();
     system_init_done_cb(init_done);
 }

 #if !MICROPY_VFS
 mp_lexer_t *mp_lexer_new_from_file(qstr filename) {
     mp_raise_OSError(MP_ENOENT);
 }

 mp_import_stat_t mp_import_stat(const char *path) {
     (void)path;
     return MP_IMPORT_STAT_NO_EXIST;
 }

 mp_obj_t mp_builtin_open(size_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
     return mp_const_none;
 }
 MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);

 #endif

 void MP_FASTCODE(nlr_jump_fail)(void *val) {
     printf("NLR jump failed\n");
     for (;;) {
     }
 }

 // void __assert(const char *file, int line, const char *func, const char *expr) {
 void __assert(const char *file, int line, const char *expr) {
     printf("Assertion '%s' failed, at file %s:%d\n", expr, file, line);
     for (;;) {
     }
 }

 #if !MICROPY_DEBUG_PRINTERS
 // With MICROPY_DEBUG_PRINTERS disabled DEBUG_printf is not defined but it
 // is still needed by esp-open-lwip for debugging output, so define it here.
 #include <stdarg.h>
 int mp_vprintf(const mp_print_t *print, const char *fmt, va_list args);
 int DEBUG_printf(const char *fmt, ...) {
     va_list ap;
     va_start(ap, fmt);
     int ret = mp_vprintf(MICROPY_DEBUG_PRINTER, fmt, ap);
     va_end(ap);
     return ret;
 }
 #endif
	/*
	* This file is part of the MicroPython project, http://micropython.org/
	*
	* The MIT License (MIT)
	*
	* Copyright (c) 2014 Damien P. George
	* Copyright (c) 2015-2016 Paul Sokolovsky
	*
	* 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 <string.h>

	#include "py/builtin.h"
	#include "py/compile.h"
	#include "py/runtime.h"
	#include "py/stackctrl.h"
	#include "py/mperrno.h"
	#include "py/mphal.h"
	#include "py/gc.h"

	#include "extmod/misc.h"
	#include "extmod/modmachine.h"
	#include "shared/readline/readline.h"
	#include "shared/runtime/pyexec.h"
	#include "gccollect.h"
	#include "user_interface.h"

	#if MICROPY_PY_ESPNOW
	#include "modespnow.h"
	#endif

	static char heap[38 * 1024];

	#if MICROPY_HW_HARD_FAULT_DEBUG

	static void format_hex(uint32_t hex, char *buffer) {
	static const char table[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
	int offset = 7;
	uint32_t value = hex;
	while (offset >= 0) {
	buffer[offset--] = table[value & 0x0F];
	value >>= 4;
	}
	}

	static void print_reset_info(void) {
	struct rst_info *rst_info = system_get_rst_info();
	if ((rst_info->reason == REASON_WDT_RST) \|\| (rst_info->reason == REASON_EXCEPTION_RST) \|\| (rst_info->reason == REASON_SOFT_WDT_RST)) {
	char buffer[8];
	mp_hal_stdout_tx_str("\r\n\r\nThe system restarted due to an error.\r\n\r\nReason: ");
	switch (rst_info->reason) {
	case REASON_WDT_RST:
	mp_hal_stdout_tx_str("WDT");
	break;

	case REASON_EXCEPTION_RST:
	mp_hal_stdout_tx_str("EXCEPTION");
	break;

	case REASON_SOFT_WDT_RST:
	mp_hal_stdout_tx_str("SOFT_WDT");
	break;

	default:
	assert(!"Should not ever get here.");
	break;
	}
	mp_hal_stdout_tx_str(" Cause: ");
	format_hex(rst_info->exccause, buffer);
	mp_hal_stdout_tx_strn(buffer, sizeof(buffer));
	mp_hal_stdout_tx_str(" EPC1: ");
	format_hex(rst_info->epc1, buffer);
	mp_hal_stdout_tx_strn(buffer, sizeof(buffer));
	mp_hal_stdout_tx_str(" EPC2: ");
	format_hex(rst_info->epc2, buffer);
	mp_hal_stdout_tx_strn(buffer, sizeof(buffer));
	mp_hal_stdout_tx_str(" EPC3: ");
	format_hex(rst_info->epc3, buffer);
	mp_hal_stdout_tx_strn(buffer, sizeof(buffer));
	mp_hal_stdout_tx_str(" Exception Vector address: ");
	format_hex(rst_info->excvaddr, buffer);
	mp_hal_stdout_tx_strn(buffer, sizeof(buffer));
	mp_hal_stdout_tx_str(" DEPC: ");
	format_hex(rst_info->depc, buffer);
	mp_hal_stdout_tx_strn(buffer, sizeof(buffer));
	mp_hal_stdout_tx_str("\r\n\r\n");
	}
	}

	#endif

	static void mp_reset(void) {
	mp_stack_set_top((void *)0x40000000);
	mp_stack_set_limit(8192);
	mp_hal_init();
	gc_init(heap, heap + sizeof(heap));
	mp_init();
	mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_lib));
	mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_));
	#if MICROPY_EMIT_XTENSA \|\| MICROPY_EMIT_INLINE_XTENSA
	extern void esp_native_code_init(void);
	esp_native_code_init();
	#endif
	pin_init0();
	readline_init0();

	// Activate UART(0) on dupterm slot 1 for the REPL
	{
	mp_obj_t args[2];
	args[0] = MP_OBJ_NEW_SMALL_INT(0);
	args[1] = MP_OBJ_NEW_SMALL_INT(115200);
	args[0] = MP_OBJ_TYPE_GET_SLOT(&machine_uart_type, make_new)(&machine_uart_type, 2, 0, args);
	args[1] = MP_OBJ_NEW_SMALL_INT(1);
	mp_os_dupterm_obj.fun.var(2, args);
	}

	#if MICROPY_PY_ESPNOW
	espnow_deinit(mp_const_none);
	#endif

	#if MICROPY_MODULE_FROZEN
	pyexec_frozen_module("_boot.py", false);
	int ret = pyexec_file_if_exists("boot.py");
	if (pyexec_mode_kind == PYEXEC_MODE_FRIENDLY_REPL && ret != 0) {
	pyexec_file_if_exists("main.py");
	}
	#endif
	}

	void soft_reset(void) {
	gc_sweep_all();
	mp_hal_stdout_tx_str("MPY: soft reboot\r\n");
	mp_hal_delay_us(10000); // allow UART to flush output
	mp_reset();
	#if MICROPY_REPL_EVENT_DRIVEN
	pyexec_event_repl_init();
	#endif
	}

	void init_done(void) {
	// Configure sleep, and put the radio to sleep if no interfaces are active
	wifi_fpm_set_sleep_type(MODEM_SLEEP_T);
	if (wifi_get_opmode() == NULL_MODE) {
	wifi_fpm_open();
	wifi_fpm_do_sleep(0xfffffff);
	}

	#if MICROPY_REPL_EVENT_DRIVEN
	uart_task_init();
	#endif
	mp_reset();
	mp_hal_stdout_tx_str("\r\n");
	#if MICROPY_REPL_EVENT_DRIVEN
	pyexec_event_repl_init();
	#endif

	#if MICROPY_HW_HARD_FAULT_DEBUG
	print_reset_info();
	#endif

	#if !MICROPY_REPL_EVENT_DRIVEN
	soft_reset:
	for (;;) {
	if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
	if (pyexec_raw_repl() != 0) {
	break;
	}
	} else {
	if (pyexec_friendly_repl() != 0) {
	break;
	}
	}
	}
	soft_reset();
	goto soft_reset;
	#endif
	}

	void user_init(void) {
	system_timer_reinit();
	system_init_done_cb(init_done);
	}

	#if !MICROPY_VFS
	mp_lexer_t *mp_lexer_new_from_file(qstr filename) {
	mp_raise_OSError(MP_ENOENT);
	}

	mp_import_stat_t mp_import_stat(const char *path) {
	(void)path;
	return MP_IMPORT_STAT_NO_EXIST;
	}

	mp_obj_t mp_builtin_open(size_t n_args, const mp_obj_t args, mp_map_t kwargs) {
	return mp_const_none;
	}
	MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);

	#endif

	void MP_FASTCODE(nlr_jump_fail)(void *val) {
	printf("NLR jump failed\n");
	for (;;) {
	}
	}

	// void __assert(const char file, int line, const char func, const char *expr) {
	void __assert(const char file, int line, const char expr) {
	printf("Assertion '%s' failed, at file %s:%d\n", expr, file, line);
	for (;;) {
	}
	}

	#if !MICROPY_DEBUG_PRINTERS
	// With MICROPY_DEBUG_PRINTERS disabled DEBUG_printf is not defined but it
	// is still needed by esp-open-lwip for debugging output, so define it here.
	#include <stdarg.h>
	int mp_vprintf(const mp_print_t print, const char fmt, va_list args);
	int DEBUG_printf(const char *fmt, ...) {
	va_list ap;
	va_start(ap, fmt);
	int ret = mp_vprintf(MICROPY_DEBUG_PRINTER, fmt, ap);
	va_end(ap);
	return ret;
	}
	#endif