50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/*
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* This module, when enabled with the LUA_USE_MODULES_GDBSTUB define causes
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* the gdbstub code to be included and enabled to handle all fatal exceptions.
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* This allows you to use the lx106 gdb to catch the exception and then poke
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* around. You can continue from a break, but attempting to continue from an
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* exception usually fails.
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*
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* This should not be included in production builds as any exception will
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* put the nodemcu into a state where it is waiting for serial input and it has
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* the watchdog disabled. Good for debugging. Bad for unattended operation!
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*
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* See the docs for more information.
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*
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* Philip Gladstone, N1DQ
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*/
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#include "module.h"
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#include "lauxlib.h"
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#include "platform.h"
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#include "c_types.h"
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#include "user_interface.h"
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#include "../esp-gdbstub/gdbstub.h"
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// gdbstub.brk() just executes a break instruction. Enters gdb
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static int lgdbstub_break(lua_State *L) {
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asm("break 0,0" ::);
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return 0;
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}
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// gdbstub.gdboutput(1) switches the output to gdb format so that gdb can display it
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static int lgdbstub_gdboutput(lua_State *L) {
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gdbstub_redirect_output(lua_toboolean(L, 1));
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return 0;
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}
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static int lgdbstub_open(lua_State *L) {
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gdbstub_init();
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return 0;
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}
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// Module function map
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static const LUA_REG_TYPE gdbstub_map[] = {
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{ LSTRKEY( "brk" ), LFUNCVAL( lgdbstub_break ) },
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{ LSTRKEY( "gdboutput" ), LFUNCVAL( lgdbstub_gdboutput) },
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{ LSTRKEY( "open" ), LFUNCVAL( lgdbstub_open) },
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{ LNILKEY, LNILVAL }
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};
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NODEMCU_MODULE(GDBSTUB, "gdbstub", gdbstub_map, NULL);
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