bslathi19/super6502
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add software support for sd response codes

Browse Source 
Polls the sd controller until the read flag is set, at which point it
reads 32 bits of data from the controller.

long response codes (such as CID) are not supported in hw or sw.
This commit is contained in:
Byron Lathi
2022-04-10 23:18:26 -05:00
parent f5f1d7ccc6
commit 9eaa6c49f9
3 changed files with 68 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

59
sw/main.c
View File

@@ -7,13 +7,14 @@
#include "sd_card.h"
int main() {
int i;
uint8_t sw;
char s[16];
s[15] = 0;
int i;
uint8_t sw;
uint32_t resp;
char s[16];
s[15] = 0;
clrscr();
cprintf("Hello, world!\n");
clrscr();
cprintf("Hello, world!\n");
for (i = 0; i < 16; i++){
cprintf("Mapping %1xxxx to %2xxxx\n", i, i);
@@ -51,29 +52,53 @@ int main() {
// The RCA is hard coded for the one that I have on hand as responses
// are not implemented yet.
sd_card_command(0, 0);
sd_card_command(0x000001aa, 8);
sd_card_resp(&resp);
cprintf("CMD8: %lx\n", resp);
sd_card_command(0, 55);
sd_card_command(0x40180000, 41);
sd_card_resp(&resp);
cprintf("CMD41: %lx\n", resp);
sd_card_command(0, 55);
sd_card_command(0x40180000, 41);
sd_card_resp(&resp);
cprintf("CMD41: %lx\n", resp);
sd_card_command(0, 2);
sd_card_resp(&resp);
cprintf("CMD2: %lx\n", resp);
sd_card_command(0, 3);
sd_card_resp(&resp);
cprintf("CMD3: %lx\n", resp);
sd_card_command(0x59b40000, 7);
sd_card_resp(&resp);
cprintf("CMD7: %lx\n", resp);
sd_card_command(0x59b41000, 13);
sd_card_resp(&resp);
cprintf("CMD13: %lx\n", resp);
sd_card_command(0, 17);
sd_card_resp(&resp);
cprintf("CMD17: %lx\n", resp);
while (1) {
while (1) {
sw = sw_read();
led_set(sw);
sw = sw_read();
led_set(sw);
cscanf("%15s", s);
cprintf("\n");
for (i = 0; i < 16; i++)
cprintf("s[%d]=%c ", i, s[i]);
cprintf("\n");
cprintf("Read string: %s\n", s);
}
cscanf("%15s", s);
cprintf("\n");
for (i = 0; i < 16; i++)
cprintf("s[%d]=%c ", i, s[i]);
cprintf("\n");
cprintf("Read string: %s\n", s);
}
return 0;
return 0;
}