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107 lines
2.4 KiB
107 lines
2.4 KiB
/*
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RTMEM MODULE
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Copyright (C) 2019 by Maxim Prokhorov <prokhorov dot max at outlook dot com>
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*/
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#include "rtcmem.h"
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volatile RtcmemData* Rtcmem = reinterpret_cast<volatile RtcmemData*>(RTCMEM_ADDR);
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bool _rtcmem_status = false;
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void _rtcmemErase() {
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auto ptr = reinterpret_cast<volatile uint32_t*>(RTCMEM_ADDR);
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const auto end = ptr + RTCMEM_BLOCKS;
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DEBUG_MSG_P(PSTR("[RTCMEM] Erasing start=%p end=%p\n"), ptr, end);
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do {
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*ptr = 0;
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} while (++ptr != end);
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}
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void _rtcmemInit() {
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_rtcmemErase();
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Rtcmem->magic = RTCMEM_MAGIC;
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}
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// Treat memory as dirty on cold boot, hardware wdt reset and rst pin
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bool _rtcmemStatus() {
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bool readable;
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switch (systemResetReason()) {
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case REASON_EXT_SYS_RST:
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case REASON_WDT_RST:
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case REASON_DEFAULT_RST:
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readable = false;
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break;
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default:
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readable = true;
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}
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readable = readable and (RTCMEM_MAGIC == Rtcmem->magic);
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return readable;
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}
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#if TERMINAL_SUPPORT
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void _rtcmemInitCommands() {
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terminalRegisterCommand(F("RTCMEM.REINIT"), [](const terminal::CommandContext&) {
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_rtcmemInit();
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});
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#if DEBUG_SUPPORT
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terminalRegisterCommand(F("RTCMEM.DUMP"), [](const terminal::CommandContext&) {
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DEBUG_MSG_P(PSTR("[RTCMEM] boot_status=%u status=%u blocks_used=%u\n"),
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_rtcmem_status, _rtcmemStatus(), RtcmemSize);
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String line;
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line.reserve(96);
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char buffer[16] = {0};
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auto addr = reinterpret_cast<volatile uint32_t*>(RTCMEM_ADDR);
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uint8_t block = 1;
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uint8_t offset = 0;
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uint8_t start = 0;
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do {
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offset = block - 1;
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snprintf(buffer, sizeof(buffer), "%08x ", *(addr + offset));
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line += buffer;
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if ((block % 8) == 0) {
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DEBUG_MSG_P(PSTR("%02u %p: %s\n"), start, addr+start, line.c_str());
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start = block;
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line = "";
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}
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++block;
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} while (block<(RTCMEM_BLOCKS+1));
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});
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#endif
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}
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#endif
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bool rtcmemStatus() {
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return _rtcmem_status;
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}
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void rtcmemSetup() {
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_rtcmem_status = _rtcmemStatus();
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if (!_rtcmem_status) {
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_rtcmemInit();
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}
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#if TERMINAL_SUPPORT
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_rtcmemInitCommands();
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#endif
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}
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