portapack-mayhem/firmware/application/debug.cpp
2023-03-18 23:19:23 +01:00

204 lines
5.6 KiB
C++

/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2023 Bernd Herzog
*
* This file is part of PortaPack.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "debug.hpp"
#include <ch.h>
#include <hal.h>
#include <string>
#include "ui_painter.hpp"
#include "portapack.hpp"
#include "ui_font_fixed_8x16.hpp"
#include "string_format.hpp"
void runtime_error(LED);
std::string number_to_hex_string(uint32_t);
void draw_line(int32_t, const char *, regarm_t);
static bool error_shown = false;
void draw_guru_meditation_header(uint8_t source, const char *hint) {
ui::Painter painter;
ui::Style style_default {
.font = ui::font::fixed_8x16,
.background = ui::Color::black(),
.foreground = ui::Color::white()
};
painter.fill_rectangle(
{ 0, 0, portapack::display.width(), portapack::display.height() },
ui::Color::red()
);
constexpr int border = 8;
painter.fill_rectangle(
{ border, border, portapack::display.width() - (border * 2), portapack::display.height() - (border * 2) },
ui::Color::black()
);
// NOTE: in situations like a hard fault it seems not possible to write strings longer than 16 characters.
painter.draw_string({ 48, 24 }, style_default, "M? Guru");
painter.draw_string({ 48 + 8*8, 24 }, style_default, "Meditation");
if (source == CORTEX_M0)
painter.draw_string({ 48 + 8, 24 }, style_default, "0");
if (source == CORTEX_M4)
painter.draw_string({ 48 + 8, 24 }, style_default, "4");
painter.draw_string({ 15, 55 }, style_default, "Hint: ");
painter.draw_string({ 15 + 8*8, 55 }, style_default, hint);
}
void draw_guru_meditation(uint8_t source, const char *hint) {
if(error_shown == false){
error_shown = true;
draw_guru_meditation_header(source, hint);
}
if (source == CORTEX_M0)
runtime_error(hackrf::one::led_rx);
if (source == CORTEX_M4)
runtime_error(hackrf::one::led_tx);
}
void draw_guru_meditation(uint8_t source, const char *hint, struct extctx *ctxp, uint32_t cfsr = 0) {
if(error_shown == false)
{
error_shown = true;
draw_guru_meditation_header(source, hint);
if (ctxp != nullptr) {
int i = 0;
draw_line(80 + i++ * 20, "r0:", ctxp->r0);
draw_line(80 + i++ * 20, "r1:", ctxp->r1);
draw_line(80 + i++ * 20, "r2:", ctxp->r2);
draw_line(80 + i++ * 20, "r3:", ctxp->r3);
draw_line(80 + i++ * 20, "r12:", ctxp->r12);
// NOTE: run for M0
// # arm-none-eabi-gdb --batch --eval-command="x/8i 0x<link_register_value_here>" firmware/application/application.elf
// or for M4
// # arm-none-eabi-gdb --batch --eval-command="x/8i 0x<link_register_value_here>" firmware/baseband/<image_name_here>.elf
// to see whats causing the fault.
draw_line(80 + i++ * 20, "lr:", ctxp->lr_thd);
draw_line(80 + i++ * 20, "pc:", ctxp->pc);
// see SCB_CFSR_* in libopencm3/cm3/scb.h for details
if (cfsr != 0)
draw_line(80 + i++ * 20, "cfsr:", (void *)cfsr);
}
}
if (source == CORTEX_M0)
runtime_error(hackrf::one::led_rx);
if (source == CORTEX_M4)
runtime_error(hackrf::one::led_tx);
}
void draw_line(int32_t y_offset, const char *label, regarm_t value){
ui::Painter painter;
ui::Style style_default {
.font = ui::font::fixed_8x16,
.background = ui::Color::black(),
.foreground = ui::Color::white()
};
painter.draw_string({ 15, y_offset }, style_default, label);
painter.draw_string({ 15 + 8*8, y_offset }, style_default, to_string_hex((uint32_t)value, 8));
}
void runtime_error(LED led) {
led.off();
while(true) {
volatile size_t n = 1000000U;
while(n--);
led.toggle();
}
}
extern "C" {
#if CH_DBG_ENABLED
void port_halt(void) {
port_disable();
if (dbg_panic_msg == nullptr)
dbg_panic_msg = "system halted";
draw_guru_meditation(CORTEX_M0, dbg_panic_msg);
}
#endif
CH_IRQ_HANDLER(MemManageVector) {
#if CH_DBG_ENABLED
chDbgPanic("MemManage");
#else
chSysHalt();
#endif
}
CH_IRQ_HANDLER(BusFaultVector) {
#if CH_DBG_ENABLED
chDbgPanic("BusFault");
#else
chSysHalt();
#endif
}
CH_IRQ_HANDLER(UsageFaultVector) {
#if CH_DBG_ENABLED
chDbgPanic("UsageFault");
#else
chSysHalt();
#endif
}
CH_IRQ_HANDLER(HardFaultVector) {
#if CH_DBG_ENABLED
CH_IRQ_PROLOGUE();
struct extctx *ctxp;
port_lock_from_isr();
if ((uint32_t)_saved_lr & 0x04)
ctxp = (struct extctx *)__get_PSP();
else
ctxp = (struct extctx *)__get_MSP();
port_disable();
auto stack_space_left = get_free_stack_space();
if (stack_space_left < 16)
draw_guru_meditation(CORTEX_M0, "Stack Overflow", ctxp);
draw_guru_meditation(CORTEX_M0, "Hard Fault", ctxp);
CH_IRQ_EPILOGUE();
#else
chSysHalt();
#endif
}
} /* extern "C" */