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micropython/ports/rp2/main.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020-2021 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 "py/compile.h"
#include "py/runtime.h"
#include "py/gc.h"
#include "py/mperrno.h"
#include "py/mphal.h"
#include "py/stackctrl.h"
#include "extmod/modbluetooth.h"
#include "extmod/modnetwork.h"
#include "shared/readline/readline.h"
#include "shared/runtime/gchelper.h"
#include "shared/runtime/pyexec.h"
#include "tusb.h"
#include "uart.h"
#include "modmachine.h"
#include "modrp2.h"
#include "mpbthciport.h"
#include "genhdr/mpversion.h"
#include "pico/stdlib.h"
#include "pico/binary_info.h"
#include "hardware/rtc.h"
#include "hardware/structs/rosc.h"
#if MICROPY_PY_LWIP
#include "lwip/init.h"
#include "lwip/apps/mdns.h"
#endif
#ifndef MICROPY_GC_HEAP_SIZE
#if MICROPY_PY_LWIP
#define MICROPY_GC_HEAP_SIZE 166 * 1024
#else
#define MICROPY_GC_HEAP_SIZE 192 * 1024
#endif
#endif
extern uint8_t __StackTop, __StackBottom;
static char gc_heap[MICROPY_GC_HEAP_SIZE];
// Embed version info in the binary in machine readable form
bi_decl(bi_program_version_string(MICROPY_GIT_TAG));
// Add a section to the picotool output similar to program features, but for frozen modules
// (it will aggregate BINARY_INFO_ID_MP_FROZEN binary info)
bi_decl(bi_program_feature_group_with_flags(BINARY_INFO_TAG_MICROPYTHON,
BINARY_INFO_ID_MP_FROZEN, "frozen modules",
BI_NAMED_GROUP_SEPARATE_COMMAS | BI_NAMED_GROUP_SORT_ALPHA));
int main(int argc, char **argv) {
#if MICROPY_HW_ENABLE_UART_REPL
bi_decl(bi_program_feature("UART REPL"))
setup_default_uart();
mp_uart_init();
#endif
#if MICROPY_HW_ENABLE_USBDEV
bi_decl(bi_program_feature("USB REPL"))
tusb_init();
#endif
#if MICROPY_PY_THREAD
bi_decl(bi_program_feature("thread support"))
mp_thread_init();
#endif
// Start and initialise the RTC
datetime_t t = {
.year = 2021,
.month = 1,
.day = 1,
.dotw = 4, // 0 is Monday, so 4 is Friday
.hour = 0,
.min = 0,
.sec = 0,
};
rtc_init();
rtc_set_datetime(&t);
// Initialise stack extents and GC heap.
mp_stack_set_top(&__StackTop);
mp_stack_set_limit(&__StackTop - &__StackBottom - 256);
gc_init(&gc_heap[0], &gc_heap[MP_ARRAY_SIZE(gc_heap)]);
#if MICROPY_PY_LWIP
// lwIP doesn't allow to reinitialise itself by subsequent calls to this function
// because the system timeout list (next_timeout) is only ever reset by BSS clearing.
// So for now we only init the lwIP stack once on power-up.
lwip_init();
#if LWIP_MDNS_RESPONDER
mdns_resp_init();
#endif
#endif
for (;;) {
// Initialise MicroPython runtime.
mp_init();
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_lib));
// Initialise sub-systems.
readline_init0();
machine_pin_init();
rp2_pio_init();
machine_i2s_init0();
#if MICROPY_PY_BLUETOOTH
mp_bluetooth_hci_init();
#endif
#if MICROPY_PY_NETWORK
mod_network_init();
#endif
#if MICROPY_PY_LWIP
mod_network_lwip_init();
#endif
// Execute _boot.py to set up the filesystem.
#if MICROPY_VFS_FAT && MICROPY_HW_USB_MSC
pyexec_frozen_module("_boot_fat.py");
#else
pyexec_frozen_module("_boot.py");
#endif
// Execute user scripts.
int ret = pyexec_file_if_exists("boot.py");
if (ret & PYEXEC_FORCED_EXIT) {
goto soft_reset_exit;
}
if (pyexec_mode_kind == PYEXEC_MODE_FRIENDLY_REPL) {
ret = pyexec_file_if_exists("main.py");
if (ret & PYEXEC_FORCED_EXIT) {
goto soft_reset_exit;
}
}
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:
mp_printf(MP_PYTHON_PRINTER, "MPY: soft reboot\n");
#if MICROPY_PY_NETWORK
mod_network_deinit();
#endif
rp2_pio_deinit();
#if MICROPY_PY_BLUETOOTH
mp_bluetooth_deinit();
#endif
machine_pin_deinit();
#if MICROPY_PY_THREAD
mp_thread_deinit();
#endif
gc_sweep_all();
mp_deinit();
}
return 0;
}
void gc_collect(void) {
gc_collect_start();
gc_helper_collect_regs_and_stack();
#if MICROPY_PY_THREAD
mp_thread_gc_others();
#endif
gc_collect_end();
}
void nlr_jump_fail(void *val) {
printf("FATAL: uncaught exception %p\n", val);
mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(val));
for (;;) {
__breakpoint();
}
}
#ifndef NDEBUG
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);
panic("Assertion failed");
}
#endif
#define POLY (0xD5)
uint8_t rosc_random_u8(size_t cycles) {
static uint8_t r;
for (size_t i = 0; i < cycles; ++i) {
r = ((r << 1) | rosc_hw->randombit) ^ (r & 0x80 ? POLY : 0);
mp_hal_delay_us_fast(1);
}
return r;
}
uint32_t rosc_random_u32(void) {
uint32_t value = 0;
for (size_t i = 0; i < 4; ++i) {
value = value << 8 | rosc_random_u8(32);
}
return value;
}
const char rp2_help_text[] =
"Welcome to MicroPython!\n"
"\n"
"For online help please visit https://micropython.org/help/.\n"
"\n"
"For access to the hardware use the 'machine' module. RP2 specific commands\n"
"are in the 'rp2' module.\n"
"\n"
"Quick overview of some objects:\n"
" machine.Pin(pin) -- get a pin, eg machine.Pin(0)\n"
" machine.Pin(pin, m, [p]) -- get a pin and configure it for IO mode m, pull mode p\n"
" methods: init(..), value([v]), high(), low(), irq(handler)\n"
" machine.ADC(pin) -- make an analog object from a pin\n"
" methods: read_u16()\n"
" machine.PWM(pin) -- make a PWM object from a pin\n"
" methods: deinit(), freq([f]), duty_u16([d]), duty_ns([d])\n"
" machine.I2C(id) -- create an I2C object (id=0,1)\n"
" methods: readfrom(addr, buf, stop=True), writeto(addr, buf, stop=True)\n"
" readfrom_mem(addr, memaddr, arg), writeto_mem(addr, memaddr, arg)\n"
" machine.SPI(id, baudrate=1000000) -- create an SPI object (id=0,1)\n"
" methods: read(nbytes, write=0x00), write(buf), write_readinto(wr_buf, rd_buf)\n"
" machine.Timer(freq, callback) -- create a software timer object\n"
" eg: machine.Timer(freq=1, callback=lambda t:print(t))\n"
"\n"
"Pins are numbered 0-29, and 26-29 have ADC capabilities\n"
"Pin IO modes are: Pin.IN, Pin.OUT, Pin.ALT\n"
"Pin pull modes are: Pin.PULL_UP, Pin.PULL_DOWN\n"
"\n"
"Useful control commands:\n"
" CTRL-C -- interrupt a running program\n"
" CTRL-D -- on a blank line, do a soft reset of the board\n"
" CTRL-E -- on a blank line, enter paste mode\n"
"\n"
"For further help on a specific object, type help(obj)\n"
"For a list of available modules, type help('modules')\n"
;
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