326 lines
10 KiB
C
326 lines
10 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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* Copyright (c) 2015 Daniel Campora
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdint.h>
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#include <std.h>
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#include "py/mpconfig.h"
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#include MICROPY_HAL_H
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#include "py/obj.h"
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#include "py/runtime.h"
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#include "py/gc.h"
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#include "inc/hw_memmap.h"
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#include "inc/hw_types.h"
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#include "pin.h"
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#include "pybuart.h"
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#include "pybpin.h"
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#include "pybrtc.h"
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#include "pyexec.h"
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#include "gccollect.h"
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#include "gchelper.h"
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#include "readline.h"
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#include "osi.h"
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#include "mptask.h"
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#include "mperror.h"
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#include "simplelink.h"
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#include "modnetwork.h"
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#include "modwlan.h"
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#include "serverstask.h"
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#include "telnet.h"
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#include "debug.h"
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#include "ff.h"
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#include "diskio.h"
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#include "sflash_diskio.h"
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#include "mpexception.h"
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#include "random.h"
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#include "pybextint.h"
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#include "pybi2c.h"
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#include "pybsd.h"
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#include "pins.h"
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/******************************************************************************
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DECLARE PRIVATE CONSTANTS
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******************************************************************************/
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/******************************************************************************
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DECLARE PRIVATE FUNCTIONS
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******************************************************************************/
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STATIC void main_init_sflash_filesystem (void);
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STATIC void main_enter_ap_mode (void);
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STATIC void main_create_main_py (void);
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/******************************************************************************
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DECLARE PUBLIC DATA
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******************************************************************************/
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#ifdef DEBUG
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OsiTaskHandle svTaskHandle;
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#endif
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/******************************************************************************
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DECLARE PRIVATE DATA
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******************************************************************************/
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static FATFS *sflash_fatfs;
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static const char fresh_main_py[] = "# main.py -- put your code here!\r\n";
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static const char fresh_boot_py[] = "# boot.py -- run on boot-up\r\n"
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"# can run arbitrary Python, but best to keep it minimal\r\n";
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/******************************************************************************
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DECLARE PUBLIC FUNCTIONS
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******************************************************************************/
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void TASK_Micropython (void *pvParameters) {
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// Initialize the garbage collector with the top of our stack
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uint32_t sp = gc_helper_get_sp();
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gc_collect_init (sp);
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FRESULT res;
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#if MICROPY_HW_ENABLE_RTC
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pybrtc_init();
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#endif
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// Create the simple link spawn task
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ASSERT (OSI_OK == VStartSimpleLinkSpawnTask(SIMPLELINK_SPAWN_TASK_PRIORITY));
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// Allocate memory for the flash file system
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ASSERT ((sflash_fatfs = mem_Malloc(sizeof(FATFS))) != NULL);
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#if MICROPY_HW_HAS_SDCARD
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pybsd_init0();
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#endif
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#ifdef DEBUG
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ASSERT (OSI_OK == osi_TaskCreate(TASK_Servers,
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(const signed char *)"Servers",
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SERVERS_STACK_SIZE, NULL, SERVERS_PRIORITY, &svTaskHandle));
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#else
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ASSERT (OSI_OK == osi_TaskCreate(TASK_Servers,
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(const signed char *)"Servers",
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SERVERS_STACK_SIZE, NULL, SERVERS_PRIORITY, NULL));
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#endif
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soft_reset:
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// GC init
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gc_init(&_heap, &_eheap);
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// Micro Python init
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mp_init();
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mp_obj_list_init(mp_sys_path, 0);
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mp_obj_list_init(mp_sys_argv, 0);
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mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR_)); // current dir (or base dir of the script)
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mpexception_init0();
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uart_init0();
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pin_init0();
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// configure stdio uart pins with the correct af
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// param 3 ("mode") is DON'T CARE" for AFs others than GPIO
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pin_config(&pin_GPIO1, PIN_MODE_3, 0, PIN_TYPE_STD, PIN_STRENGTH_2MA);
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pin_config(&pin_GPIO2, PIN_MODE_3, 0, PIN_TYPE_STD, PIN_STRENGTH_2MA);
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// Instantiate the stdio uart
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mp_obj_t args[2] = {
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mp_obj_new_int(MICROPY_STDIO_UART),
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mp_obj_new_int(MICROPY_STDIO_UART_BAUD),
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};
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pyb_stdio_uart = pyb_uart_type.make_new((mp_obj_t)&pyb_uart_type, MP_ARRAY_SIZE(args), 0, args);
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readline_init0();
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extint_init0();
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mod_network_init();
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wlan_init0();
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#if MICROPY_HW_ENABLE_RNG
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rng_init0();
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#endif
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main_enter_ap_mode();
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// enable telnet and ftp servers
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servers_enable();
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// initialize the serial flash file system
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main_init_sflash_filesystem();
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// append the SFLASH paths to the system path
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mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_SFLASH));
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mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_SFLASH_slash_LIB));
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// reset config variables; they should be set by boot.py
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MP_STATE_PORT(pyb_config_main) = MP_OBJ_NULL;
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// run boot.py, if it exists
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const char *boot_py = "BOOT.PY";
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res = f_stat(boot_py, NULL);
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if (res == FR_OK) {
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int ret = pyexec_file(boot_py);
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if (ret & PYEXEC_FORCED_EXIT) {
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goto soft_reset_exit;
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}
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if (!ret) {
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// TODO: Flash some LEDs
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}
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}
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// Now we initialise sub-systems that need configuration from boot.py,
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// or whose initialisation can be safely deferred until after running
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// boot.py.
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// At this point everything is fully configured and initialised.
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// Run the main script from the current directory.
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if (pyexec_mode_kind == PYEXEC_MODE_FRIENDLY_REPL) {
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const char *main_py;
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if (MP_STATE_PORT(pyb_config_main) == MP_OBJ_NULL) {
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main_py = "MAIN.PY";
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} else {
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main_py = mp_obj_str_get_str(MP_STATE_PORT(pyb_config_main));
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}
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res = f_stat(main_py, NULL);
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if (res == FR_OK) {
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int ret = pyexec_file(main_py);
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if (ret & PYEXEC_FORCED_EXIT) {
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goto soft_reset_exit;
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}
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if (!ret) {
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// TODO: Flash some LEDs
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}
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}
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}
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// Main script is finished, so now go into REPL mode.
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// The REPL mode can change, or it can request a soft reset.
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for (;;) {
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if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
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if (pyexec_raw_repl() != 0) {
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break;
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}
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} else {
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if (pyexec_friendly_repl() != 0) {
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break;
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}
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}
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}
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soft_reset_exit:
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// soft reset
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sflash_disk_flush();
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printf("PYB: soft reboot\n");
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// disable wlan services
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wlan_servers_stop();
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wlan_sl_disable();
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// wait for all bus transfers to complete
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HAL_Delay(50);
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uart_deinit();
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goto soft_reset;
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}
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/******************************************************************************
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DEFINE PRIVATE FUNCTIONS
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******************************************************************************/
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STATIC void main_init_sflash_filesystem (void) {
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// Initialise the local flash filesystem.
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// Create it if needed, and mount in on /sflash.
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// try to mount the flash
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FRESULT res = f_mount(sflash_fatfs, "/SFLASH", 1);
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if (res == FR_NO_FILESYSTEM) {
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// no filesystem, so create a fresh one
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res = f_mkfs("/SFLASH", 1, 0);
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if (res == FR_OK) {
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// success creating fresh LFS
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} else {
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__fatal_error("could not create /SFLASH file system");
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}
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// create empty main.py
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main_create_main_py();
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} else if (res == FR_OK) {
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// mount sucessful
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FILINFO fno;
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if (FR_OK != f_stat("/SFLASH/MAIN.PY", &fno)) {
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// create empty main.py
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main_create_main_py();
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}
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} else {
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__fatal_error("could not create /SFLASH file system");
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}
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// The current directory is used as the boot up directory.
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// It is set to the internal flash filesystem by default.
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f_chdrive("/SFLASH");
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// Make sure we have a /flash/boot.py. Create it if needed.
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FILINFO fno;
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res = f_stat("/SFLASH/BOOT.PY", &fno);
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if (res == FR_OK) {
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if (fno.fattrib & AM_DIR) {
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// exists as a directory
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// TODO handle this case
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// see http://elm-chan.org/fsw/ff/img/app2.c for a "rm -rf" implementation
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} else {
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// exists as a file, good!
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}
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} else {
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// doesn't exist, create fresh file
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FIL fp;
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f_open(&fp, "/SFLASH/BOOT.PY", FA_WRITE | FA_CREATE_ALWAYS);
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UINT n;
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f_write(&fp, fresh_boot_py, sizeof(fresh_boot_py) - 1 /* don't count null terminator */, &n);
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// TODO check we could write n bytes
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f_close(&fp);
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}
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}
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STATIC void main_enter_ap_mode (void) {
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// Enable simplelink in low power mode
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wlan_sl_enable (ROLE_AP, SERVERS_DEF_AP_SSID, strlen(SERVERS_DEF_AP_SSID), SL_SEC_TYPE_WPA_WPA2,
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SERVERS_DEF_AP_KEY, strlen(SERVERS_DEF_AP_KEY), SERVERS_DEF_AP_CHANNEL);
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wlan_set_pm_policy (SL_NORMAL_POLICY);
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}
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STATIC void main_create_main_py (void) {
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// create empty main.py
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FIL fp;
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f_open(&fp, "/SFLASH/MAIN.PY", FA_WRITE | FA_CREATE_ALWAYS);
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UINT n;
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f_write(&fp, fresh_main_py, sizeof(fresh_main_py) - 1 /* don't count null terminator */, &n);
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f_close(&fp);
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}
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STATIC mp_obj_t pyb_main(mp_obj_t main) {
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if (MP_OBJ_IS_STR(main)) {
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MP_STATE_PORT(pyb_config_main) = main;
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}
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(pyb_main_obj, pyb_main);
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