Firebee/BaS_gcc
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

finished incorporating sd_card routines

Browse Source
This commit is contained in:
Markus Fröschle
2012-10-24 13:49:22 +00:00
parent bb44af66f0
commit 4b15407ebc
5 changed files with 46 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
sources/sd_card_asm.S
View File

@@ -11,16 +11,38 @@
#define MCF_PAD_PAR_DSPI (__MBAR+0xA50)
#define MCF_PSC0_PSCTB_8BIT (__MBAR+0x860C)
#define MCF_DSPI_DMCR (__MBAR+0x8A00)
.text
#define MCF_SLT0_SCNT (__MBAR + 0x908)
warte_10ms:
move.l d0,-(sp)
move.l MCF_SLT0_SCNT,d0
sub.l #1320000,d0
warte_d6:
cmp.l MCF_SLT0_SCNT,d0
bcs warte_d6
move.l (sp)+,d0
rts
warte_1ms:
move.l d0,-(sp)
move.l MCF_SLT0_SCNT,d0
sub.l #132000,d0
warte_d5:
cmp.l MCF_SLT0_SCNT,d0
bcs warte_d5
move.l (sp)+,d0
rts
.text
.global sd_idle
.global sd_init
sd_test:
sd_init:
lea MCF_PSC0_PSCTB_8BIT,a6
move.l #LONGASC('S', 'D', '-', 'A'),(a6)
move.l #LONGASC('a', 'r', 'd', ' '),(a6)
move.l #_Bas_base,a5 // basis addresse (diesen bereich brauchen wir nicht mehr!)
move.l buffer,a5 // basis addresse (diesen bereich brauchen wir nicht mehr!)
move.l #0x1fffffff,d0 // normal dspi
move.l d0,MCF_PAD_PAR_DSPI
lea MCF_DSPI_DMCR,a0
@@ -30,9 +52,9 @@ sd_test:
move.l #0x082000ff,d4 // tx vorbesetzen
mov3q.l #-1,dspi_dsr(a0)
bsr.l _wait_1ms
bsr.l warte_1ms
move.l #0xc00d3c00,(a0) // 8 bit 4MHz clocken cs off
bsr.l _wait_10ms
bsr.l warte_10ms
move.l #0x800d3c00,(a0) // 8 bit 4MHz normal cs on
bsr sd_com
bsr sd_com
@@ -53,7 +75,7 @@ sd_test:
bsr sd_com
bsr sd_com
move.l #0x802d3c00,(a0) // 8 bit 4MHz normal cs off
bsr.l _wait_10ms
bsr.l warte_10ms
// sd idle
move.l #100,d6 // 100 versuche
@@ -411,3 +433,6 @@ sd_rcv_rd_rb:
bne sd_rcv_rd_rb
rts
/******************************************/
.data
buffer: dc.l 0, 0, 0, 0, 0, 0, 0, 0