source: avrstuff/EPRoxygen/27c020.cpp@ 16cf6ff

#include "27c020.h"

#include <stdio.h>
#include <unistd.h>


x27C020::x27C020()
        : Device()
{
}

void x27C020::power()
{
        Device::write(CTRL, 0b10011111 | CTRLmask);
        Device::write(VOLT, 0b11001000 | VOLTmask);
        outb(port + 2, NONE);
}

void x27C020::read(const char* filename)
{
        for (int address = 0; address < 256*1024; address++)
        {
                Device::write(VOLT, DOE | VOLTmask);
                Device::write(CTRL, CE | OE | WE | A17 | CTRLmask);
                        usleep(1000);
                
                Device::write(ADR0, address);
                        usleep(1000);
                Device::write(ADR1, address >> 8);
                        usleep(1000);
                // TODO A16, A17
                Device::write(CTRL, WE | A17 | CTRLmask);
                        usleep(1000);
                uint8_t val = Device::read();
                Device::write(CTRL, CE | OE | WE | A17 | CTRLmask);

                // TODO write to file, or stdout if file is null
                putc(val, stdout);
                // TODO flush every 512 bytes or so
                fflush(stdout);
        }
}

void x27C020::write(const char* filename)
{
        // TODO support it !
        puts("Writing not supported");
}

void x27C020::erase(void)
{
        // TODO return error
        puts("Erasing not supported");
}