385efb2511
These series of commands are enough to read the first 512b block off of the sd card. The RCA is hard coded to the sd card that I have on hand, since response codes are not supported
80 lines
1.7 KiB
C
80 lines
1.7 KiB
C
#include <stdint.h>
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#include <conio.h>
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#include "board_io.h"
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#include "uart.h"
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#include "mapper.h"
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#include "sd_card.h"
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int main() {
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int i;
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uint8_t sw;
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char s[16];
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s[15] = 0;
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clrscr();
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cprintf("Hello, world!\n");
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for (i = 0; i < 16; i++){
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cprintf("Mapping %1xxxx to %2xxxx\n", i, i);
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mapper_write(i, i);
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}
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cprintf("Enabling Mapper\n");
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mapper_enable(1);
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cprintf("Writing 0xcccc to 0x4000\n");
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*(unsigned int*)(0x4000) = 0xcccc;
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cprintf("Writing 0xdddd to 0x5000\n");
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*(unsigned int*)(0x5000) = 0xdddd;
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cprintf("Mapping %1xxxx to %2xxxx\n", 4, 16);
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mapper_write(16, 4);
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cprintf("Mapping %1xxxx to %2xxxx\n", 5, 16);
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mapper_write(16, 5);
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cprintf("Writing 0xa5a5 to 0x4000\n");
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*(unsigned int*)(0x4000) = 0xa5a5;
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cprintf("Reading from 0x5000: %x\n", *(unsigned int*)(0x5000));
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cprintf("Resetting map\n");
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mapper_write(4, 4);
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mapper_write(5, 5);
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cprintf("Reading from 0x4000: %x\n", *(unsigned int*)(0x4000));
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cprintf("Reading from 0x5000: %x\n", *(unsigned int*)(0x5000));
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// This will read a 512 block from the sd card.
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// The RCA is hard coded for the one that I have on hand as responses
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// are not implemented yet.
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sd_card_command(0, 0);
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sd_card_command(0x000001aa, 8);
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sd_card_command(0, 55);
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sd_card_command(0x40180000, 41);
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sd_card_command(0, 55);
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sd_card_command(0x40180000, 41);
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sd_card_command(0, 2);
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sd_card_command(0, 3);
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sd_card_command(0x59b40000, 7);
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sd_card_command(0x59b41000, 13);
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sd_card_command(0, 17);
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while (1) {
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sw = sw_read();
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led_set(sw);
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cscanf("%15s", s);
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cprintf("\n");
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for (i = 0; i < 16; i++)
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cprintf("s[%d]=%c ", i, s[i]);
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cprintf("\n");
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cprintf("Read string: %s\n", s);
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}
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return 0;
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}
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