0362b6484f
Just prior to dumping, reset the WDT to a known-safe (and not too long) interval that guarantees a complete dump.
119 lines
2.7 KiB
C++
119 lines
2.7 KiB
C++
#include <stddef.h>
|
|
|
|
#include <avr/wdt.h>
|
|
#include <avr/interrupt.h>
|
|
|
|
#include "xflash_dump.h"
|
|
#ifdef XFLASH_DUMP
|
|
#include "xflash.h"
|
|
#include "Marlin.h"
|
|
|
|
ISR(WDT_vect)
|
|
{
|
|
WRITE(BEEPER, 1);
|
|
eeprom_update_byte((uint8_t*)EEPROM_CRASH_ACKNOWLEDGED, 0);
|
|
xfdump_full_dump_and_reset(dump_crash_source::watchdog);
|
|
}
|
|
|
|
bool xfdump_check_state()
|
|
{
|
|
uint32_t magic;
|
|
|
|
XFLASH_SPI_ENTER();
|
|
xflash_rd_data(DUMP_OFFSET + offsetof(dump_t, header.magic),
|
|
(uint8_t*)&magic, sizeof(magic));
|
|
|
|
return magic == DUMP_MAGIC;
|
|
}
|
|
|
|
|
|
bool xfdump_check_crash()
|
|
{
|
|
// check_state will call SPI_ENTER for us
|
|
if(!xfdump_check_state())
|
|
return false;
|
|
|
|
dump_crash_source crash;
|
|
xflash_rd_data(DUMP_OFFSET + offsetof(dump_t, header.crash_type),
|
|
(uint8_t*)&crash, sizeof(crash));
|
|
return (crash != dump_crash_source::manual);
|
|
}
|
|
|
|
|
|
void xfdump_reset()
|
|
{
|
|
XFLASH_SPI_ENTER();
|
|
xflash_enable_wr();
|
|
xflash_sector_erase(DUMP_OFFSET + offsetof(dump_t, header.magic));
|
|
xflash_wait_busy();
|
|
}
|
|
|
|
|
|
static void xfdump_erase()
|
|
{
|
|
XFLASH_SPI_ENTER();
|
|
for(uint32_t addr = DUMP_OFFSET;
|
|
addr < DUMP_OFFSET + DUMP_SIZE;
|
|
addr += 4096)
|
|
{
|
|
xflash_enable_wr();
|
|
xflash_sector_erase(DUMP_OFFSET);
|
|
xflash_wait_busy();
|
|
}
|
|
}
|
|
|
|
|
|
static void xfdump_dump_core(dump_header_t& hdr, uint32_t addr, uint8_t* buf, uint16_t cnt)
|
|
{
|
|
XFLASH_SPI_ENTER();
|
|
|
|
// start by clearing all sectors (we need all of them in any case)
|
|
xfdump_erase();
|
|
|
|
// write header
|
|
static_assert(sizeof(hdr) <= 256, "header is larger than a single page write");
|
|
xflash_enable_wr();
|
|
xflash_page_program(DUMP_OFFSET, (uint8_t*)&hdr, sizeof(hdr));
|
|
xflash_wait_busy();
|
|
|
|
// write data
|
|
static_assert(sizeof(dump_t::data) <= RAMEND, "dump area size insufficient");
|
|
xflash_multipage_program(addr, buf, cnt);
|
|
}
|
|
|
|
|
|
void xfdump_dump()
|
|
{
|
|
dump_header_t buf;
|
|
buf.magic = DUMP_MAGIC;
|
|
buf.regs_present = false;
|
|
buf.crash_type = (uint8_t)dump_crash_source::manual;
|
|
|
|
// write sram only
|
|
xfdump_dump_core(buf, DUMP_OFFSET + offsetof(dump_t, data.sram),
|
|
(uint8_t*)RAMSTART, RAMSIZE);
|
|
}
|
|
|
|
|
|
void xfdump_full_dump_and_reset(dump_crash_source crash)
|
|
{
|
|
dump_header_t buf;
|
|
buf.magic = DUMP_MAGIC;
|
|
buf.regs_present = true;
|
|
buf.crash_type = (uint8_t)crash;
|
|
|
|
// disable interrupts for a cleaner register dump
|
|
cli();
|
|
|
|
// ensure there's always enough time (with some margin) to dump
|
|
// dump time on w25x20cl: ~150ms
|
|
wdt_enable(WDTO_500MS);
|
|
|
|
// write all addressable ranges (this will trash bidirectional registers)
|
|
xfdump_dump_core(buf, DUMP_OFFSET + offsetof(dump_t, data), 0, RAMEND);
|
|
|
|
// force a reset even sooner
|
|
softReset();
|
|
}
|
|
#endif
|