/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2013, 2014 Damien P. George
 * Copyright (c) 2015 Glenn Ruben Bakke
 *
 * 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 <stdint.h>
#include <stdio.h>
#include <string.h>

#include "py/nlr.h"
#include "py/mperrno.h"
#include "py/lexer.h"
#include "py/parse.h"
#include "py/obj.h"
#include "py/runtime.h"
#include "py/stackctrl.h"
#include "py/gc.h"
#include "py/compile.h"
#include "lib/utils/pyexec.h"
#include "readline.h"
#include "gccollect.h"
#include "modmachine.h"
#include "modmusic.h"
#include "modules/uos/microbitfs.h"
#include "led.h"
#include "uart.h"
#include "nrf.h"
#include "pin.h"
#include "spi.h"
#include "i2c.h"
#include "adc.h"
#include "rtcounter.h"
#include "mphalport.h"

#if MICROPY_PY_MACHINE_HW_PWM
#include "pwm.h"
#endif
#include "timer.h"

#if BLUETOOTH_SD
#include "nrf_sdm.h"
#endif

#if (MICROPY_PY_BLE_NUS)
#include "ble_uart.h"
#endif

#if MICROPY_PY_MACHINE_SOFT_PWM
#include "ticker.h"
#include "softpwm.h"
#endif

#if MICROPY_HW_USB_CDC
#include "usb_cdc.h"
#endif

void do_str(const char *src, mp_parse_input_kind_t input_kind) {
 mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0);
 if (lex == NULL) {
 printf("MemoryError: lexer could not allocate memory\n");
 return;
 }

 nlr_buf_t nlr;
 if (nlr_push(&nlr) == 0) {
 qstr source_name = lex->source_name;
 mp_parse_tree_t pn = mp_parse(lex, input_kind);
 mp_obj_t module_fun = mp_compile(&pn, source_name, true);
 mp_call_function_0(module_fun);
 nlr_pop();
 } else {
 // uncaught exception
 mp_obj_print_exception(&mp_plat_print, (mp_obj_t)nlr.ret_val);
 }
}

extern uint32_t _heap_start;
extern uint32_t _heap_end;

int main(int argc, char **argv) {


soft_reset:
 #if MICROPY_PY_TIME_TICKS
 rtc1_init_time_ticks();
 #endif

 led_init();

 led_state(1, 1); // MICROPY_HW_LED_1 aka MICROPY_HW_LED_RED

 mp_stack_set_top(&_ram_end);

 // Stack limit should be less than real stack size, so we have a chance
 // to recover from limit hit. (Limit is measured in bytes.)
 mp_stack_set_limit((char *)&_ram_end - (char *)&_heap_end - 400);

 machine_init();

 gc_init(&_heap_start, &_heap_end);

 mp_init();
 mp_obj_list_init(mp_sys_path, 0);
 mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR_)); // current dir (or base dir of the script)
 mp_obj_list_init(mp_sys_argv, 0);

 readline_init0();


 #if MICROPY_PY_MACHINE_HW_SPI
 spi_init0();
 #endif

 #if MICROPY_PY_MACHINE_I2C
 i2c_init0();
 #endif

 #if MICROPY_PY_MACHINE_ADC
 adc_init0();
 #endif

 #if MICROPY_PY_MACHINE_HW_PWM
 pwm_init0();
 #endif

 #if MICROPY_PY_MACHINE_RTCOUNTER
 rtc_init0();
 #endif

 #if MICROPY_PY_MACHINE_TIMER
 timer_init0();
 #endif

 #if MICROPY_PY_MACHINE_UART
 uart_init0();
 #endif

 #if (MICROPY_PY_BLE_NUS == 0) && (MICROPY_HW_USB_CDC == 0)
 {
 mp_obj_t args[2] = {
 MP_OBJ_NEW_SMALL_INT(0),
 MP_OBJ_NEW_SMALL_INT(115200),
 };
 MP_STATE_PORT(board_stdio_uart) = machine_hard_uart_type.make_new((mp_obj_t)&machine_hard_uart_type, MP_ARRAY_SIZE(args), 0, args);
 }
 #endif

 pin_init0();

 #if MICROPY_MBFS
 microbit_filesystem_init();
 #endif

 #if MICROPY_HW_HAS_SDCARD
 // if an SD card is present then mount it on /sd/
 if (sdcard_is_present()) {
 // create vfs object
 fs_user_mount_t *vfs = m_new_obj_maybe(fs_user_mount_t);
 if (vfs == NULL) {
 goto no_mem_for_sd;
 }
 vfs->str = "/sd";
 vfs->len = 3;
 vfs->flags = MP_BLOCKDEV_FLAG_FREE_OBJ;
 sdcard_init_vfs(vfs);

 // put the sd device in slot 1 (it will be unused at this point)
 MP_STATE_PORT(fs_user_mount)[1] = vfs;

 FRESULT res = f_mount(&vfs->fatfs, vfs->str, 1);
 if (res != FR_OK) {
 printf("MPY: can't mount SD card\n");
 MP_STATE_PORT(fs_user_mount)[1] = NULL;
 m_del_obj(fs_user_mount_t, vfs);
 } else {
 // TODO these should go before the /flash entries in the path
 mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_sd));
 mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_sd_slash_lib));

 // use SD card as current directory
 f_chdrive("/sd");
 }
 no_mem_for_sd:;
 }
 #endif

 // Main script is finished, so now go into REPL mode.
 // The REPL mode can change, or it can request a soft reset.
 int ret_code = 0;

 #if MICROPY_PY_BLE_NUS
 ble_uart_init0();
 #endif

 #if MICROPY_PY_MACHINE_SOFT_PWM
 ticker_init0();
 softpwm_init0();
 #endif

 #if MICROPY_PY_MUSIC
 microbit_music_init0();
 #endif
 #if BOARD_SPECIFIC_MODULES
 board_modules_init0();
 #endif

 #if MICROPY_PY_MACHINE_SOFT_PWM
 ticker_start();
 pwm_start();
 #endif

 led_state(1, 0);

 #if MICROPY_VFS || MICROPY_MBFS || MICROPY_MODULE_FROZEN
 // run boot.py and main.py if they exist.
 pyexec_file_if_exists("boot.py");
 pyexec_file_if_exists("main.py");
 #endif

 #if MICROPY_HW_USB_CDC
 usb_cdc_init();
 #endif

 for (;;) {
 if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
 if (pyexec_raw_repl() != 0) {
 break;
 }
 } else {
 ret_code = pyexec_friendly_repl();
 if (ret_code != 0) {
 break;
 }
 }
 }

 mp_deinit();

 printf("MPY: soft reboot\n");

 #if BLUETOOTH_SD
 sd_softdevice_disable();
 #endif

 goto soft_reset;

 return 0;
}

#if !MICROPY_VFS
#if MICROPY_MBFS
// Use micro:bit filesystem
mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
 return uos_mbfs_new_reader(filename);
}

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

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

#else
// use dummy functions - no filesystem available
mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
 mp_raise_OSError(MP_ENOENT);
}

mp_import_stat_t mp_import_stat(const char *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) {
 mp_raise_OSError(MP_EPERM);
}
MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
#endif
#endif


void HardFault_Handler(void) {
 #if defined(NRF52_SERIES) || defined(NRF91_SERIES)
 static volatile uint32_t reg;
 static volatile uint32_t reg2;
 static volatile uint32_t bfar;
 reg = SCB->HFSR;
 reg2 = SCB->CFSR;
 bfar = SCB->BFAR;
 for (int i = 0; i < 0; i++) {
 (void)reg;
 (void)reg2;
 (void)bfar;
 }
 #endif
}

void NORETURN __fatal_error(const char *msg) {
 while (1) {
 ;
 }
}

void nlr_jump_fail(void *val) {
 printf("FATAL: uncaught exception %p\n", val);
 mp_obj_print_exception(&mp_plat_print, (mp_obj_t)val);
 __fatal_error("");
}

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

void _start(void) {
 main(0, NULL);
}