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micropython/cc3200/mptask.c

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/*
* 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 Daniel Campora
*
* 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 "py/mpconfig.h"
#include "py/stackctrl.h"
#include "py/obj.h"
#include "py/runtime.h"
#include "py/gc.h"
#include "py/mphal.h"
#include "lib/mp-readline/readline.h"
#include "lib/oofatfs/ff.h"
#include "lib/oofatfs/diskio.h"
#include "extmod/vfs.h"
#include "extmod/vfs_fat.h"
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "rom_map.h"
#include "pin.h"
#include "prcm.h"
#include "interrupt.h"
#include "pybuart.h"
#include "pybpin.h"
#include "pybrtc.h"
#include "lib/utils/pyexec.h"
#include "gccollect.h"
#include "gchelper.h"
#include "mperror.h"
#include "simplelink.h"
#include "modnetwork.h"
#include "modusocket.h"
#include "modwlan.h"
#include "serverstask.h"
#include "telnet.h"
#include "debug.h"
#include "sflash_diskio.h"
#include "mpexception.h"
#include "random.h"
#include "pybi2c.h"
#include "pins.h"
#include "mods/pybflash.h"
#include "pybsleep.h"
#include "pybtimer.h"
#include "cryptohash.h"
#include "mpirq.h"
#include "updater.h"
#include "moduos.h"
#include "antenna.h"
#include "task.h"
/******************************************************************************
DECLARE PRIVATE CONSTANTS
******************************************************************************/
/******************************************************************************
DECLARE PRIVATE FUNCTIONS
******************************************************************************/
STATIC void mptask_pre_init (void);
STATIC void mptask_init_sflash_filesystem (void);
STATIC void mptask_enter_ap_mode (void);
STATIC void mptask_create_main_py (void);
/******************************************************************************
DECLARE PUBLIC DATA
******************************************************************************/
#ifdef DEBUG
OsiTaskHandle svTaskHandle;
#endif
/******************************************************************************
DECLARE PRIVATE DATA
******************************************************************************/
static fs_user_mount_t *sflash_vfs_fat;
static const char fresh_main_py[] = "# main.py -- put your code here!\r\n";
static const char fresh_boot_py[] = "# boot.py -- run on boot-up\r\n"
"# can run arbitrary Python, but best to keep it minimal\r\n"
#if MICROPY_STDIO_UART
"import os, machine\r\n"
"os.dupterm(machine.UART(0, " MP_STRINGIFY(MICROPY_STDIO_UART_BAUD) "))\r\n"
#endif
;
/******************************************************************************
DECLARE PUBLIC FUNCTIONS
******************************************************************************/
void TASK_MicroPython (void *pvParameters) {
// get the top of the stack to initialize the garbage collector
uint32_t sp = gc_helper_get_sp();
bool safeboot = false;
mptask_pre_init();
#ifndef DEBUG
safeboot = PRCMGetSpecialBit(PRCM_SAFE_BOOT_BIT);
#endif
soft_reset:
// Thread init
#if MICROPY_PY_THREAD
mp_thread_init();
#endif
// initialise the stack pointer for the main thread (must be done after mp_thread_init)
mp_stack_set_top((void*)sp);
// GC init
gc_init(&_boot, &_eheap);
// MicroPython init
mp_init();
mp_obj_list_init(mp_sys_path, 0);
mp_obj_list_init(mp_sys_argv, 0);
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR_)); // current dir (or base dir of the script)
// execute all basic initializations
mpexception_init0();
mp_irq_init0();
pyb_sleep_init0();
pin_init0();
mperror_init0();
uart_init0();
timer_init0();
readline_init0();
mod_network_init0();
rng_init0();
pybsleep_reset_cause_t rstcause = pyb_sleep_get_reset_cause();
if (rstcause < PYB_SLP_SOFT_RESET) {
if (rstcause == PYB_SLP_HIB_RESET) {
// when waking up from hibernate we just want
// to enable simplelink and leave it as is
wlan_first_start();
}
else {
// only if not comming out of hibernate or a soft reset
mptask_enter_ap_mode();
}
// enable telnet and ftp
servers_start();
}
// initialize the serial flash file system
mptask_init_sflash_filesystem();
// append the flash paths to the system path
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_flash));
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_flash_slash_lib));
// reset config variables; they should be set by boot.py
MP_STATE_PORT(machine_config_main) = MP_OBJ_NULL;
if (!safeboot) {
// run boot.py
int ret = pyexec_file("boot.py");
if (ret & PYEXEC_FORCED_EXIT) {
goto soft_reset_exit;
}
if (!ret) {
// flash the system led
mperror_signal_error();
}
}
// now we initialise sub-systems that need configuration from boot.py,
// or whose initialisation can be safely deferred until after running
// boot.py.
// at this point everything is fully configured and initialised.
if (!safeboot) {
// run the main script from the current directory.
if (pyexec_mode_kind == PYEXEC_MODE_FRIENDLY_REPL) {
const char *main_py;
if (MP_STATE_PORT(machine_config_main) == MP_OBJ_NULL) {
main_py = "main.py";
} else {
main_py = mp_obj_str_get_str(MP_STATE_PORT(machine_config_main));
}
int ret = pyexec_file(main_py);
if (ret & PYEXEC_FORCED_EXIT) {
goto soft_reset_exit;
}
if (!ret) {
// flash the system led
mperror_signal_error();
}
}
}
// main script is finished, so now go into REPL mode.
// the REPL mode can change, or it can request a 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_exit:
// soft reset
pyb_sleep_signal_soft_reset();
mp_printf(&mp_plat_print, "PYB: soft reboot\n");
// disable all callbacks to avoid undefined behaviour
// when coming out of a soft reset
mp_irq_disable_all();
// cancel the RTC alarm which might be running independent of the irq state
pyb_rtc_disable_alarm();
// flush the serial flash buffer
sflash_disk_flush();
// clean-up the user socket space
modusocket_close_all_user_sockets();
// unmount all user file systems
osmount_unmount_all();
// wait for pending transactions to complete
mp_hal_delay_ms(20);
goto soft_reset;
}
/******************************************************************************
DEFINE PRIVATE FUNCTIONS
******************************************************************************/
__attribute__ ((section (".boot")))
STATIC void mptask_pre_init (void) {
// this one only makes sense after a poweron reset
pyb_rtc_pre_init();
// Create the simple link spawn task
ASSERT (OSI_OK == VStartSimpleLinkSpawnTask(SIMPLELINK_SPAWN_TASK_PRIORITY));
// Allocate memory for the flash file system
ASSERT ((sflash_vfs_fat = mem_Malloc(sizeof(*sflash_vfs_fat))) != NULL);
// this one allocates memory for the nvic vault
pyb_sleep_pre_init();
// this one allocates memory for the WLAN semaphore
wlan_pre_init();
// this one allocates memory for the updater semaphore
updater_pre_init();
// this one allocates memory for the socket semaphore
modusocket_pre_init();
//CRYPTOHASH_Init();
#ifndef DEBUG
OsiTaskHandle svTaskHandle;
#endif
svTaskHandle = xTaskCreateStatic(TASK_Servers, "Servers",
SERVERS_STACK_LEN, NULL, SERVERS_PRIORITY, svTaskStack, &svTaskTCB);
ASSERT(svTaskHandle != NULL);
}
STATIC void mptask_init_sflash_filesystem (void) {
FILINFO fno;
// Initialise the local flash filesystem.
// init the vfs object
fs_user_mount_t *vfs_fat = sflash_vfs_fat;
vfs_fat->flags = 0;
pyb_flash_init_vfs(vfs_fat);
// Create it if needed, and mount in on /flash.
FRESULT res = f_mount(&vfs_fat->fatfs);
if (res == FR_NO_FILESYSTEM) {
// no filesystem, so create a fresh one
uint8_t working_buf[_MAX_SS];
res = f_mkfs(&vfs_fat->fatfs, FM_FAT | FM_SFD, 0, working_buf, sizeof(working_buf));
if (res == FR_OK) {
// success creating fresh LFS
} else {
__fatal_error("failed to create /flash");
}
// create empty main.py
mptask_create_main_py();
} else if (res == FR_OK) {
// mount sucessful
if (FR_OK != f_stat(&vfs_fat->fatfs, "/main.py", &fno)) {
// create empty main.py
mptask_create_main_py();
}
} else {
fail:
__fatal_error("failed to create /flash");
}
// mount the flash device (there should be no other devices mounted at this point)
// we allocate this structure on the heap because vfs->next is a root pointer
mp_vfs_mount_t *vfs = m_new_obj_maybe(mp_vfs_mount_t);
if (vfs == NULL) {
goto fail;
}
vfs->str = "/flash";
vfs->len = 6;
vfs->obj = MP_OBJ_FROM_PTR(vfs_fat);
vfs->next = NULL;
MP_STATE_VM(vfs_mount_table) = vfs;
// The current directory is used as the boot up directory.
// It is set to the internal flash filesystem by default.
MP_STATE_PORT(vfs_cur) = vfs;
// create /flash/sys, /flash/lib and /flash/cert if they don't exist
if (FR_OK != f_chdir(&vfs_fat->fatfs, "/sys")) {
f_mkdir(&vfs_fat->fatfs, "/sys");
}
if (FR_OK != f_chdir(&vfs_fat->fatfs, "/lib")) {
f_mkdir(&vfs_fat->fatfs, "/lib");
}
if (FR_OK != f_chdir(&vfs_fat->fatfs, "/cert")) {
f_mkdir(&vfs_fat->fatfs, "/cert");
}
f_chdir(&vfs_fat->fatfs, "/");
// make sure we have a /flash/boot.py. Create it if needed.
res = f_stat(&vfs_fat->fatfs, "/boot.py", &fno);
if (res == FR_OK) {
if (fno.fattrib & AM_DIR) {
// exists as a directory
// TODO handle this case
// see http://elm-chan.org/fsw/ff/img/app2.c for a "rm -rf" implementation
} else {
// exists as a file, good!
}
} else {
// doesn't exist, create fresh file
FIL fp;
f_open(&vfs_fat->fatfs, &fp, "/boot.py", FA_WRITE | FA_CREATE_ALWAYS);
UINT n;
f_write(&fp, fresh_boot_py, sizeof(fresh_boot_py) - 1 /* don't count null terminator */, &n);
// TODO check we could write n bytes
f_close(&fp);
}
}
STATIC void mptask_enter_ap_mode (void) {
// append the mac only if it's not the first boot
bool add_mac = !PRCMGetSpecialBit(PRCM_FIRST_BOOT_BIT);
// enable simplelink in ap mode (use the MAC address to make the ssid unique)
wlan_sl_init (ROLE_AP, MICROPY_PORT_WLAN_AP_SSID, strlen(MICROPY_PORT_WLAN_AP_SSID),
MICROPY_PORT_WLAN_AP_SECURITY, MICROPY_PORT_WLAN_AP_KEY, strlen(MICROPY_PORT_WLAN_AP_KEY),
MICROPY_PORT_WLAN_AP_CHANNEL, ANTENNA_TYPE_INTERNAL, add_mac);
}
STATIC void mptask_create_main_py (void) {
// create empty main.py
FIL fp;
f_open(&sflash_vfs_fat->fatfs, &fp, "/main.py", FA_WRITE | FA_CREATE_ALWAYS);
UINT n;
f_write(&fp, fresh_main_py, sizeof(fresh_main_py) - 1 /* don't count null terminator */, &n);
f_close(&fp);
}
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