📄 mmc.s
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.module mmc.c
.area text(rom, con, rel)
.dbfile G:\mega8\atmega16\mp3_7210\mmc.c
.dbfunc e SPI_masterinit _SPI_masterinit fV
.even
_SPI_masterinit::
.dbline -1
.dbline 52
; #include <iom16v.h>
;
; // MMC commands
; #define MMC_GO_IDLE_STATE 0
; #define MMC_SEND_OP_COND 1
; #define MMC_SEND_CSD 9
; #define MMC_SEND_CID 10
; #define MMC_SEND_STATUS 13
; #define MMC_SET_BLOCKLEN 16
; #define MMC_READ_SINGLE_BLOCK 17
; #define MMC_WRITE_BLOCK 24
; #define MMC_PROGRAM_CSD 27
; #define MMC_SET_WRITE_PROT 28
; #define MMC_CLR_WRITE_PROT 29
; #define MMC_SEND_WRITE_PROT 30
; #define MMC_TAG_SECTOR_START 32
; #define MMC_TAG_SECTOR_END 33
; #define MMC_UNTAG_SECTOR 34
; #define MMC_TAG_ERASE_GROUP_START 35
; #define MMC_TAG_ERARE_GROUP_END 36
; #define MMC_UNTAG_ERASE_GROUP 37
; #define MMC_ERASE 38
; #define MMC_CRC_ON_OFF 59
;
; #define R1_BUSY 128
; #define R1_PARAMETER 64
; #define R1_ADDRESS 32
; #define R1_ERASE_SEQ 16
; #define R1_COM_CRC 8
; #define R1_ILLEGAL_COM 4
; #define R1_ERASE_RESET 2
; #define R1_IDLE_STATE 1
;
; #define led1_off (PORTA|=(1<<6))
; #define led1_on (PORTA&=~(1<<6))
; #define led2_off (PORTA|=(1<<5))
; #define led2_on (PORTA&=~(1<<5))
;
; #define disable_mmc_cs (PORTB|=(1<<0))
; #define enable_mmc_cs (PORTB&=~(1<<0))
;
;
;
; unsigned char ram_data[512];
;
;
;
; extern void LCD_write(unsigned char data,unsigned char dc);
;
; /***********SPI初始化******************/
; void SPI_masterinit(void)
; {
.dbline 54
; //不中断 允许 主模式 fck/4
; SPCR=0b01010000; //SPIE SPE DORD MSTR CPOL CPHA SPR1 SPR0
ldi R24,80
out 0xd,R24
.dbline -2
.dbline 56
;
; }
L1:
.dbline 0 ; func end
ret
.dbend
.dbfunc e SPI_tx_rx _SPI_tx_rx fc
; spi_data -> R16
.even
_SPI_tx_rx::
.dbline -1
.dbline 61
;
; /***********SPI读取/写入****基础SPI传送命令******/
; unsigned char SPI_tx_rx(unsigned char spi_data);
; unsigned char SPI_tx_rx(unsigned char spi_data)
; {
.dbline 62
; SPDR=spi_data;
out 0xf,R16
L3:
.dbline 63
L4:
.dbline 63
; while (!(SPSR&0x80));
sbis 0xe,7
rjmp L3
.dbline 64
; return SPDR;
in R16,0xf
.dbline -2
L2:
.dbline 0 ; func end
ret
.dbsym r spi_data 16 c
.dbend
.dbfunc e MMC_sendCmd _MMC_sendCmd fc
; temp -> R20
; A7_0 -> y+8
; A15_8 -> y+6
; A23_16 -> y+4
; A31_24 -> R20
; cmd -> R22
.even
_MMC_sendCmd::
xcall push_gset2
mov R20,R18
mov R22,R16
.dbline -1
.dbline 69
; }
; /***********MMC_sendCmd();*****基础传送命令*******/
; unsigned char MMC_sendCmd(unsigned char cmd,unsigned char A31_24,unsigned char A23_16,unsigned char A15_8,unsigned char A7_0);
; unsigned char MMC_sendCmd(unsigned char cmd,unsigned char A31_24,unsigned char A23_16,unsigned char A15_8,unsigned char A7_0)
; {
.dbline 71
; signed char temp;
; enable_mmc_cs;
cbi 0x18,0
.dbline 73
;
; SPI_tx_rx(cmd|0x40); //cmd"01xxxxxx"
mov R16,R22
ori R16,64
xcall _SPI_tx_rx
.dbline 74
; SPI_tx_rx(A31_24);
mov R16,R20
xcall _SPI_tx_rx
.dbline 75
; SPI_tx_rx(A23_16);
ldd R16,y+4
xcall _SPI_tx_rx
.dbline 76
; SPI_tx_rx(A15_8);
ldd R16,y+6
xcall _SPI_tx_rx
.dbline 77
; SPI_tx_rx(A7_0);
ldd R16,y+8
xcall _SPI_tx_rx
.dbline 78
; SPI_tx_rx(0x95); //crc for cmd0
ldi R16,149
xcall _SPI_tx_rx
.dbline 80
;
; SPI_tx_rx(0xff); //one empty cycle
ldi R16,255
xcall _SPI_tx_rx
.dbline 82
;
; temp=SPI_tx_rx(0xff); //0=busy
ldi R16,255
xcall _SPI_tx_rx
mov R20,R16
.dbline 84
; //LCD_write(temp,1); //test point
; if ((temp-0x80)>=0) //0b1xxxxxxx=err
mov R24,R20
subi R24,128
cpi R24,0
brlt L7
.dbline 85
; {
.dbline 86
; temp=0xff;
ldi R20,255
L9:
.dbline 87
L10:
.dbline 87
; while (SPI_tx_rx(0xff)==0);
ldi R16,255
xcall _SPI_tx_rx
tst R16
breq L9
.dbline 89
; // led1_on; //test point
; }
xjmp L8
L7:
.dbline 91
; else
; if (cmd==MMC_SEND_STATUS) //如果是读状态命令
cpi R22,13
brne L18
.dbline 92
; {
.dbline 93
; temp=SPI_tx_rx(0xff); //read STATUS
ldi R16,255
xcall _SPI_tx_rx
mov R20,R16
L14:
.dbline 94
L15:
.dbline 94
; while (SPI_tx_rx(0xff)==0);
ldi R16,255
xcall _SPI_tx_rx
tst R16
breq L14
.dbline 96
; // led1_on;
; }
xjmp L13
X0:
.dbline 98
; else //是其他命令
; {
L17:
.dbline 99
L18:
.dbline 99
; while (SPI_tx_rx(0xff)==0);
ldi R16,255
xcall _SPI_tx_rx
tst R16
breq L17
.dbline 101
; // led1_on;
; }
L13:
L8:
.dbline 102
; return temp;
mov R16,R20
.dbline -2
L6:
xcall pop_gset2
.dbline 0 ; func end
ret
.dbsym r temp 20 C
.dbsym l A7_0 8 c
.dbsym l A15_8 6 c
.dbsym l A23_16 4 c
.dbsym r A31_24 20 c
.dbsym r cmd 22 c
.dbend
.dbfunc e MMC_finish _MMC_finish fV
.even
_MMC_finish::
.dbline -1
.dbline 106
; }
; /***********MMC_finish();***停止卡片******/
; void MMC_finish(void)
; {
.dbline 107
; disable_mmc_cs;
sbi 0x18,0
.dbline 108
; SPI_tx_rx(0xff);
ldi R16,255
.dbline -2
.dbline 109
; }
L20:
.dbline 0 ; func end
xjmp _SPI_tx_rx
.dbend
.dbfunc e MMC_flush _MMC_flush fV
; counter -> R20
; flush_num -> R22
.even
_MMC_flush::
xcall push_gset2
mov R22,R16
.dbline -1
.dbline 114
;
; /***********MMC_flush();*****丢弃几个字节*******/
; void MMC_flush(unsigned char flush_num);
; void MMC_flush(unsigned char flush_num)
; {
.dbline 116
clr R20
xjmp L25
L22:
.dbline 116
ldi R16,255
xcall _SPI_tx_rx
L23:
.dbline 116
inc R20
L25:
.dbline 116
; unsigned char counter;
; for (counter=0;counter<flush_num;counter++) SPI_tx_rx(0xff); //丢弃几个字节
cp R20,R22
brlo L22
.dbline 117
; MMC_finish();
xcall _MMC_finish
.dbline -2
.dbline 118
; }
L21:
xcall pop_gset2
.dbline 0 ; func end
ret
.dbsym r counter 20 c
.dbsym r flush_num 22 c
.dbend
.dbfunc e MMC_reset _MMC_reset fV
; lcd_add -> <dead>
; mmc_response -> R20
; counter -> R22
.even
_MMC_reset::
xcall push_gset2
sbiw R28,5
.dbline -1
.dbline 122
;
; /***********MMC_reset();***将MMC卡转到SPI模式****/
; void MMC_reset(void)
; {
.dbline 124
clr R22
xjmp L30
L27:
.dbline 124
ldi R16,255
xcall _SPI_tx_rx
L28:
.dbline 124
inc R22
L30:
.dbline 124
; unsigned char counter,mmc_response,lcd_add;
; for (counter=0;counter<11;counter++) SPI_tx_rx(0xff);//80个时钟开始总线
cpi R22,11
brlo L27
.dbline 126
;
; mmc_response=MMC_sendCmd(MMC_GO_IDLE_STATE,0,0,0,0); //send cmd0
clr R2
std y+4,R2
std y+2,R2
std y+0,R2
clr R18
clr R16
xcall _MMC_sendCmd
mov R20,R16
.dbline 127
; MMC_finish();
xcall _MMC_finish
.dbline 129
;
; for (counter=0;counter<80;counter++) //失败尝试次数
clr R22
xjmp L34
L31:
.dbline 130
; {
.dbline 132
;
; mmc_response=MMC_sendCmd(MMC_SEND_OP_COND,0,0,0,0);
clr R2
std y+4,R2
std y+2,R2
std y+0,R2
clr R18
ldi R16,1
xcall _MMC_sendCmd
mov R20,R16
.dbline 133
; MMC_finish();
xcall _MMC_finish
.dbline 135
;
; if (mmc_response==0) //切换到SPI成功
tst R20
brne L35
.dbline 136
; {
.dbline 137
; led2_on;
cbi 0x1b,5
.dbline 138
; counter=81; //跳出失败尝试次数
ldi R22,81
.dbline 139
; }
xjmp L36
L35:
.dbline 140
; else led1_on; //切换到SPI失败
cbi 0x1b,6
L36:
.dbline 142
L32:
.dbline 129
inc R22
L34:
.dbline 129
cpi R22,80
brlo L31
.dbline -2
.dbline 144
;
; }
;
; }
L26:
adiw R28,5
xcall pop_gset2
.dbline 0 ; func end
ret
.dbsym l lcd_add 6 c
.dbsym r mmc_response 20 c
.dbsym r counter 22 c
.dbend
.dbfunc e MMC_check _MMC_check fc
; mmc_response -> R20
.even
_MMC_check::
xcall push_gset1
sbiw R28,5
.dbline -1
.dbline 149
;
; /***********MMC_check();******测试卡是否正常为0***********/
; unsigned char MMC_check(void);
; unsigned char MMC_check(void)
; {
.dbline 151
; unsigned char mmc_response;
; mmc_response=MMC_sendCmd(MMC_SEND_STATUS,0,0,0,0); //send cmd
clr R2
std y+4,R2
std y+2,R2
std y+0,R2
clr R18
ldi R16,13
xcall _MMC_sendCmd
mov R20,R16
.dbline 152
; MMC_finish();
xcall _MMC_finish
.dbline 153
; LCD_write(0x55,1); //test point
ldi R18,1
ldi R16,85
xcall _LCD_write
.dbline 154
; LCD_write(mmc_response&0x93,1); //test point
ldi R18,1
mov R16,R20
andi R16,147
xcall _LCD_write
.dbline 155
; LCD_write(0x55,1); //test point
ldi R18,1
ldi R16,85
xcall _LCD_write
.dbline 156
; return (mmc_response&0x93);
mov R16,R20
andi R16,147
.dbline -2
L37:
adiw R28,5
xcall pop_gset1
.dbline 0 ; func end
ret
.dbsym r mmc_response 20 c
.dbend
.dbfunc e MMC_name _MMC_name fV
; lcd_add -> <dead>
; mmc_response -> R20
; counter -> R22
.even
_MMC_name::
xcall push_gset2
sbiw R28,5
.dbline -1
.dbline 162
; }
;
;
; /***********MMC_name();**获得卡的名字*****/
; void MMC_name(void)
; {
.dbline 163
; unsigned char counter,lcd_add,mmc_response=1;
ldi R20,1
.dbline 164
; mmc_response=MMC_sendCmd(MMC_SEND_CID,0,0,0,0);
clr R2
std y+4,R2
std y+2,R2
std y+0,R2
clr R18
ldi R16,10
xcall _MMC_sendCmd
mov R20,R16
xjmp L40
L39:
.dbline 166
.dbline 167
xcall _MMC_finish
.dbline 168
clr R2
std y+4,R2
std y+2,R2
std y+0,R2
clr R18
ldi R16,10
xcall _MMC_sendCmd
mov R20,R16
.dbline 169
ldi R18,1
xcall _LCD_write
.dbline 170
cbi 0x1b,6
.dbline 172
L40:
.dbline 165
; while (mmc_response) //读到数据为0表示正常，就跳出
tst R20
brne L39
.dbline 173
; {
; MMC_finish();
; mmc_response=MMC_sendCmd(MMC_SEND_CID,0,0,0,0);
; LCD_write(mmc_response,1); //test point
; led1_on; //test point
; // prog_flag=1; //错误标记
; }
; led1_off; //test point
sbi 0x1b,6
.dbline 174
; for (counter=0;counter<26;counter++)
clr R22
xjmp L45
L42:
.dbline 175
.dbline 176
ldi R16,255
xcall _SPI_tx_rx
ldi R24,<_ram_data
ldi R25,>_ram_data
mov R30,R22
clr R31
add R30,R24
adc R31,R25
std z+0,R16
.dbline 177
ldi R18,1
mov R30,R22
clr R31
add R30,R24
adc R31,R25
ldd R16,z+0
xcall _LCD_write
.dbline 178
L43:
.dbline 174
inc R22
L45:
.dbline 174
cpi R22,26
brlo L42
.dbline 179
; {
; ram_data[counter]=SPI_tx_rx(0xff);
; LCD_write(ram_data[counter],1); //test point
; }
; MMC_flush(8);
ldi R16,8
xcall _MMC_flush
.dbline -2
.dbline 180
; }
L38:
adiw R28,5
xcall pop_gset2
.dbline 0 ; func end
ret
.dbsym l lcd_add 6 c
.dbsym r mmc_response 20 c
.dbsym r counter 22 c
.dbend
.dbfunc e MMC_capactity _MMC_capactity fl
; lcd_add -> <dead>
; mmc_response -> R20
; counter -> R22
.even
_MMC_capactity::
xcall push_gset2
sbiw R28,5
.dbline -1
.dbline 185
;
; /***********MMC_capactity();******************/
; unsigned long MMC_capactity(void);
; unsigned long MMC_capactity(void)
; {
.dbline 186
; unsigned char counter,lcd_add,mmc_response=1;
ldi R20,1
.dbline 187
; mmc_response=MMC_sendCmd(MMC_SEND_CSD,0,0,0,0);
clr R2
std y+4,R2
std y+2,R2
std y+0,R2
clr R18
ldi R16,9
xcall _MMC_sendCmd
mov R20,R16
xjmp L48
L47:
.dbline 189
.dbline 190
xcall _MMC_finish
.dbline 191
clr R2
std y+4,R2
std y+2,R2
std y+0,R2
clr R18
ldi R16,10
xcall _MMC_sendCmd
mov R20,R16
.dbline 192
ldi R18,1
xcall _LCD_write
.dbline 193
cbi 0x1b,6
.dbline 195
L48:
.dbline 188
; while (mmc_response) //读到数据为0表示正常，就跳出
tst R20
brne L47
.dbline 196
; {
; MMC_finish();
; mmc_response=MMC_sendCmd(MMC_SEND_CID,0,0,0,0);
; LCD_write(mmc_response,1); //test point
; led1_on; //test point
; // prog_flag=1; //错误标记
; }
; led1_off; //test point
sbi 0x1b,6
.dbline 197
; for (counter=0;counter<26;counter++)
clr R22
xjmp L53
L50:
.dbline 198
.dbline 199
ldi R16,255
xcall _SPI_tx_rx
ldi R24,<_ram_data
ldi R25,>_ram_data
mov R30,R22
clr R31
add R30,R24
adc R31,R25
std z+0,R16
.dbline 200
ldi R18,1
mov R30,R22
clr R31
add R30,R24
adc R31,R25
ldd R16,z+0
xcall _LCD_write
.dbline 201
L51:
.dbline 197
inc R22
L53:
.dbline 197
cpi R22,26
brlo L50
.dbline 202
; {
; ram_data[counter]=SPI_tx_rx(0xff);
; LCD_write(ram_data[counter],1); //test point
; }
; MMC_flush(8);
ldi R16,8
xcall _MMC_flush
.dbline -2
.dbline 205
;
;
; }
L46:
adiw R28,5
xcall pop_gset2
.dbline 0 ; func end
ret
.dbsym l lcd_add 6 c
.dbsym r mmc_response 20 c
.dbsym r counter 22 c
.dbend
.area bss(ram, con, rel)
.dbfile G:\mega8\atmega16\mp3_7210\mmc.c
_ram_data::
.blkb 512
.dbsym e ram_data _ram_data A[512:512]c
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