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r65emu/hardware.cpp

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#include "hardware.h"
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#include <SPI.h>
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#if defined(USE_SD)
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#include <SD.h>
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#elif defined(USE_SPIFFS)
#include <SPIFFS.h>
#elif defined(USE_LITTLEFS)
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#include <FS.h>
#include <LittleFS.h>
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#endif
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#include "memory.h"
#include "CPU.h"
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#if defined(USE_SPIRAM)
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#include <SpiRAM.h>
#include "spiram.h"
spiram sram(SPIRAM_SIZE);
#endif
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Memory memory;
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#if defined(USE_KBD)
#include "ps2drv.h"
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PS2Driver ps2;
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#endif
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static CPU *_cpu;
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bool hardware_reset() {
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bool success = true;
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#if defined(USE_SPIRAM)
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extern SPIClass SPIRAM_DEV;
SPIRAM_DEV.begin();
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#if defined(SPIRAM_MODULE)
SPIRAM_DEV.setModule(SPIRAM_MODULE);
#endif
#if defined(SPIRAM_CLKDIV)
SPIRAM_DEV.setClockDivider(SPIRAM_CLKDIV);
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#endif
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SPIRAM_DEV.setDataMode(SPI_MODE0);
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#endif
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#if defined(USE_SD)
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#if defined(SD_SPI)
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success = SD.begin(SD_CS, 2, SD_SPI);
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pinMode(SPI_CS, OUTPUT); // without this, the SPI-RAM isn't seen
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#else
success = SD.begin(SD_CS);
#endif
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#elif defined(USE_SPIFFS)
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success = SPIFFS.begin(true);
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#elif defined(USE_LITTLEFS)
success = LittleFS.begin();
#endif
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#if defined(TFT_BACKLIGHT)
digitalWrite(TFT_BACKLIGHT, HIGH);
#endif
_cpu->reset();
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return success;
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}
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void hardware_init(CPU &cpu) {
_cpu = &cpu;
memory.begin();
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#if defined(USE_KBD)
ps2.begin(KBD_DATA, KBD_IRQ);
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#endif
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#if defined(TFT_BACKLIGHT)
pinMode(TFT_BACKLIGHT, OUTPUT);
#endif
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#if defined(USE_SD)
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pinMode(SD_CS, OUTPUT);
digitalWrite(SD_CS, HIGH);
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#endif
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#if defined(USE_SPIRAM)
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pinMode(SPIRAM_CS, OUTPUT);
digitalWrite(SPIRAM_CS, HIGH);
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#endif
}
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#if !defined(NO_CHECKPOINT)
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void hardware_checkpoint(Stream &s) {
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unsigned ds = 0;
for (unsigned i = 0; i < 0x10000; i += ds) {
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Memory::Device *dev = memory.get(i);
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dev->checkpoint(s);
ds = dev->pages() * Memory::page_size;
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}
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_cpu->checkpoint(s);
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}
void hardware_restore(Stream &s) {
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unsigned ds = 0;
for (unsigned i = 0; i < 0x10000; i += ds) {
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Memory::Device *dev = memory.get(i);
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dev->restore(s);
ds = dev->pages() * Memory::page_size;
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}
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_cpu->restore(s);
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}
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#endif