📄 main.lss

📁 MMC/SD on Olimex Sam7-EX256
💻 LSS
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char mmcSetBlockLength (const unsigned long blocklength)
{
  //char rValue = MMC_TIMEOUT_ERROR;
  //char i = 0;

  // SS = LOW (on)
  //CS_LOW ();

  // Set the block length to read
  //MMC_SET_BLOCKLEN =CMD16
  mmcSendCmd(16, blocklength, 0xFF);

  // get response from MMC - make sure that its 0x00 (R1 ok response format)
  if(mmcGetResponse()!=0x00);

  //CS_HIGH ();

  // Send 8 Clock pulses of delay.
  spiSendByte(0xff);

  return MMC_SUCCESS;
}				


unsigned char spiSendByte(const unsigned char data)
{
    /*
    unsigned char spib;

    //while(SSIOST_bit.BUSY != 0);    // Wait until the character can be sent
    SSIOINT_bit.TXCMP = 1;            //clear interrupt register
    SSIOBUF = data;                   // Send the data

    while((SSIOINT & 0x02) != 0x02);   // Wait for the transfer to complete
    spib = SSIOBUF;                   // Get the data received
    SSIOINT_bit.RXCMP = 1;            //clear interrupt register
    return spib;                      //return transmited character
    */

  /*
    //NOTE!!! This function send character to SPI bus when mode is MASTER
    //NOTE!!! This function receive character from SPI when mode is SLAVE
    unsigned int spib;

    //while(SSPSR_bit.BSY);      // Wait until the character can be sent
    while(SSPSR_bit.TNF == 0);
    SSPDR = data;              // Send the data

    //while(!SPSR0_bit.SPIF);     // Wait for the transfer to complete
    while(SSPSR_bit.RNE == 0);    // Wait until the character can be sent
    spib = SSPDR;                 // Get the data received
    return spib;
    //return 0;
  */


    /*
    unsigned int spib;

    while((s_pSpi->SPI_SR & AT91C_SPI_RDRF) == 1);    // Wait until the character can be sent
    s_pSpi->SPI_RDR = data;                           // Send the data

    while((s_pSpi->SPI_SR & AT91C_SPI_TDRE) == 1);    // Wait for the transfer to complete
    spib = s_pSpi->SPI_TDR;                // Get the data received
    return spib;
    */

    unsigned int spib;

    //while((s_pSpi->SPI_SR & AT91C_SPI_TDRE) == 0);      // Wait for the transfer to complete
    while((s_pSpi->SPI_SR & AT91C_SPI_TXEMPTY) == 0);
  10058c:	4b07      	ldr	r3, [pc, #28]	(1005ac <.text+0x5ac>)  10058e:	0600      	lsl	r0, r0, #24  100590:	681a      	ldr	r2, [r3, #0]  100592:	0e00      	lsr	r0, r0, #24  100594:	6913      	ldr	r3, [r2, #16]  100596:	0599      	lsl	r1, r3, #22  100598:	d5fc      	bpl	100594 <spiSendByte+0x8>    s_pSpi->SPI_TDR = (data & 0xFFFF);    // Send the data
  10059a:	60d0      	str	r0, [r2, #12]
    while((s_pSpi->SPI_SR & AT91C_SPI_RDRF) == 0);      // Wait until the character can be sent
  10059c:	6913      	ldr	r3, [r2, #16]  10059e:	07d9      	lsl	r1, r3, #31  1005a0:	d5fc      	bpl	10059c <spiSendByte+0x10>    spib = ((s_pSpi->SPI_RDR) & 0xFFFF);                // Get the data received
  1005a2:	6890      	ldr	r0, [r2, #8]  1005a4:	0600      	lsl	r0, r0, #24  1005a6:	0e00      	lsr	r0, r0, #24    return spib;

}
  1005a8:	4770      	bx	lr  1005aa:	0000      	lsl	r0, r0, #0  1005ac:	003c      	lsl	r4, r7, #0  1005ae:	0020      	lsl	r0, r4, #0001005b0 <mmcSendCmd>:  1005b0:	b510      	push	{r4, lr}  1005b2:	0600      	lsl	r0, r0, #24  1005b4:	b082      	sub	sp, #8  1005b6:	2340      	mov	r3, #64  1005b8:	0e00      	lsr	r0, r0, #24  1005ba:	4318      	orr	r0, r3  1005bc:	466b      	mov	r3, sp  1005be:	0612      	lsl	r2, r2, #24  1005c0:	3302      	add	r3, #2  1005c2:	466c      	mov	r4, sp  1005c4:	7018      	strb	r0, [r3, #0]  1005c6:	0e12      	lsr	r2, r2, #24  1005c8:	2018      	mov	r0, #24  1005ca:	3403      	add	r4, #3  1005cc:	1c0b      	mov	r3, r1		(add r3, r1, #0)  1005ce:	40c3      	lsr	r3, r0  1005d0:	3808      	sub	r0, #8  1005d2:	7023      	strb	r3, [r4, #0]  1005d4:	1c03      	mov	r3, r0		(add r3, r0, #0)  1005d6:	3401      	add	r4, #1  1005d8:	3308      	add	r3, #8  1005da:	d1f7      	bne	1005cc <mmcSendCmd+0x1c>  1005dc:	466b      	mov	r3, sp  1005de:	3302      	add	r3, #2  1005e0:	715a      	strb	r2, [r3, #5]  1005e2:	1c1c      	mov	r4, r3		(add r4, r3, #0)  1005e4:	7820      	ldrb	r0, [r4, #0]  1005e6:	ffd1f7ff 	bl	10058c <spiSendByte>  1005ea:	3401      	add	r4, #1  1005ec:	ab02      	add	r3, sp, #8  1005ee:	429c      	cmp	r4, r3  1005f0:	d1f8      	bne	1005e4 <mmcSendCmd+0x34>  1005f2:	b002      	add	sp, #8  1005f4:	bc10      	pop	{r4}  1005f6:	bc01      	pop	{r0}  1005f8:	4700      	bx	r0	...001005fc <mmcGetResponse>:  1005fc:	b510      	push	{r4, lr}  1005fe:	2441      	mov	r4, #65  100600:	20ff      	mov	r0, #255  100602:	ffc3f7ff 	bl	10058c <spiSendByte>  100606:	2800      	cmp	r0, #0  100608:	d004      	beq	100614 <mmcGetResponse+0x18>  10060a:	2801      	cmp	r0, #1  10060c:	d002      	beq	100614 <mmcGetResponse+0x18>  10060e:	3c01      	sub	r4, #1  100610:	2c00      	cmp	r4, #0  100612:	d1f5      	bne	100600 <mmcGetResponse+0x4>  100614:	bc10      	pop	{r4}  100616:	bc02      	pop	{r1}  100618:	4708      	bx	r1	...0010061c <initMMC>:  10061c:	b510      	push	{r4, lr}  10061e:	ff89f7ff 	bl	100534 <initSPI>  100622:	240a      	mov	r4, #10  100624:	20ff      	mov	r0, #255  100626:	3c01      	sub	r4, #1  100628:	ffb0f7ff 	bl	10058c <spiSendByte>  10062c:	2c00      	cmp	r4, #0  10062e:	d1f9      	bne	100624 <initMMC+0x8>  100630:	2000      	mov	r0, #0  100632:	2100      	mov	r1, #0  100634:	2295      	mov	r2, #149  100636:	ffbbf7ff 	bl	1005b0 <mmcSendCmd>  10063a:	ffdff7ff 	bl	1005fc <mmcGetResponse>  10063e:	20ff      	mov	r0, #255  100640:	ffa4f7ff 	bl	10058c <spiSendByte>  100644:	2001      	mov	r0, #1  100646:	2100      	mov	r1, #0  100648:	22ff      	mov	r2, #255  10064a:	ffb1f7ff 	bl	1005b0 <mmcSendCmd>  10064e:	ffd5f7ff 	bl	1005fc <mmcGetResponse>  100652:	2801      	cmp	r0, #1  100654:	d0f3      	beq	10063e <initMMC+0x22>  100656:	20ff      	mov	r0, #255  100658:	ff98f7ff 	bl	10058c <spiSendByte>  10065c:	2000      	mov	r0, #0  10065e:	bc10      	pop	{r4}  100660:	bc02      	pop	{r1}  100662:	4708      	bx	r100100664 <mmcGetXXResponse>:  100664:	b530      	push	{r4, r5, lr}  100666:	0600      	lsl	r0, r0, #24  100668:	4c06      	ldr	r4, [pc, #24]	(100684 <.text+0x684>)  10066a:	0e05      	lsr	r5, r0, #24  10066c:	20ff      	mov	r0, #255  10066e:	ff8df7ff 	bl	10058c <spiSendByte>  100672:	42a8      	cmp	r0, r5  100674:	d002      	beq	10067c <mmcGetXXResponse+0x18>  100676:	3c01      	sub	r4, #1  100678:	2c00      	cmp	r4, #0  10067a:	d1f7      	bne	10066c <mmcGetXXResponse+0x8>  10067c:	bc30      	pop	{r4, r5}  10067e:	bc02      	pop	{r1}  100680:	4708      	bx	r1  100682:	0000      	lsl	r0, r0, #0  100684:	01f5      	lsl	r5, r6, #7	...00100688 <mmcCheckBusy>:  100688:	b510      	push	{r4, lr}  10068a:	2400      	mov	r4, #0  10068c:	20ff      	mov	r0, #255  10068e:	ff7df7ff 	bl	10058c <spiSendByte>  100692:	231f      	mov	r3, #31  100694:	4018      	and	r0, r3  100696:	280b      	cmp	r0, #11  100698:	d004      	beq	1006a4 <mmcCheckBusy+0x1c>  10069a:	280d      	cmp	r0, #13  10069c:	d004      	beq	1006a8 <mmcCheckBusy+0x20>  10069e:	2805      	cmp	r0, #5  1006a0:	d10a      	bne	1006b8 <mmcCheckBusy+0x30>  1006a2:	e003      	b	1006ac <mmcCheckBusy+0x24>  1006a4:	2010      	mov	r0, #16  1006a6:	e00b      	b	1006c0 <mmcCheckBusy+0x38>  1006a8:	2011      	mov	r0, #17  1006aa:	e009      	b	1006c0 <mmcCheckBusy+0x38>  1006ac:	20ff      	mov	r0, #255  1006ae:	ff6df7ff 	bl	10058c <spiSendByte>  1006b2:	2800      	cmp	r0, #0  1006b4:	d0fa      	beq	1006ac <mmcCheckBusy+0x24>  1006b6:	e003      	b	1006c0 <mmcCheckBusy+0x38>  1006b8:	3401      	add	r4, #1  1006ba:	2c41      	cmp	r4, #65  1006bc:	d0f6      	beq	1006ac <mmcCheckBusy+0x24>  1006be:	e7e5      	b	10068c <mmcCheckBusy+0x4>  1006c0:	bc10      	pop	{r4}  1006c2:	bc02      	pop	{r1}  1006c4:	4708      	bx	r1	...001006c8 <mmcSetBlockLength>:  1006c8:	b500      	push	{lr}  1006ca:	1c01      	mov	r1, r0		(add r1, r0, #0)  1006cc:	22ff      	mov	r2, #255  1006ce:	2010      	mov	r0, #16  1006d0:	ff6ef7ff 	bl	1005b0 <mmcSendCmd>  1006d4:	ff92f7ff 	bl	1005fc <mmcGetResponse>  1006d8:	20ff      	mov	r0, #255  1006da:	ff57f7ff 	bl	10058c <spiSendByte>  1006de:	2000      	mov	r0, #0  1006e0:	bc02      	pop	{r1}  1006e2:	4708      	bx	r1001006e4 <mmcReadBlock>:  1006e4:	b510      	push	{r4, lr}  1006e6:	1c04      	mov	r4, r0		(add r4, r0, #0)  1006e8:	1c08      	mov	r0, r1		(add r0, r1, #0)  1006ea:	ffedf7ff 	bl	1006c8 <mmcSetBlockLength>  1006ee:	2800      	cmp	r0, #0  1006f0:	d001      	beq	1006f6 <mmcReadBlock+0x12>  1006f2:	2401      	mov	r4, #1  1006f4:	e021      	b	10073a <mmcReadBlock+0x56>  1006f6:	2011      	mov	r0, #17  1006f8:	1c21      	mov	r1, r4		(add r1, r4, #0)  1006fa:	22ff      	mov	r2, #255  1006fc:	ff58f7ff 	bl	1005b0 <mmcSendCmd>  100700:	ff7cf7ff 	bl	1005fc <mmcGetResponse>  100704:	2800      	cmp	r0, #0  100706:	d001      	beq	10070c <mmcReadBlock+0x28>  100708:	2402      	mov	r4, #2  10070a:	e016      	b	10073a <mmcReadBlock+0x56>  10070c:	20fe      	mov	r0, #254  10070e:	ffa9f7ff 	bl	100664 <mmcGetXXResponse>  100712:	28fe      	cmp	r0, #254  100714:	d001      	beq	10071a <mmcReadBlock+0x36>  100716:	2403      	mov	r4, #3  100718:	e00f      	b	10073a <mmcReadBlock+0x56>  10071a:	4c0b      	ldr	r4, [pc, #44]	(100748 <.text+0x748>)  10071c:	20ff      	mov	r0, #255  10071e:	ff35f7ff 	bl	10058c <spiSendByte>  100722:	4b0a      	ldr	r3, [pc, #40]	(10074c <.text+0x74c>)  100724:	7020      	strb	r0, [r4, #0]  100726:	3401      	add	r4, #1  100728:	429c      	cmp	r4, r3  10072a:	d1f7      	bne	10071c <mmcReadBlock+0x38>  10072c:	20ff      	mov	r0, #255  10072e:	ff2df7ff 	bl	10058c <spiSendByte>  100732:	20ff      	mov	r0, #255  100734:	ff2af7ff 	bl	10058c <spiSendByte>  100738:	2400      	mov	r4, #0  10073a:	20ff      	mov	r0, #255  10073c:	ff26f7ff 	bl	10058c <spiSendByte>  100740:	1c20      	mov	r0, r4		(add r0, r4, #0)  100742:	bc10      	pop	{r4}  100744:	bc02      	pop	{r1}  100746:	4708      	bx	r1  100748:	0066      	lsl	r6, r4, #1  10074a:	0020      	lsl	r0, r4, #0  10074c:	0266      	lsl	r6, r4, #9  10074e:	0020      	lsl	r0, r4, #000100750 <mmcWriteBlock>:  100750:	b510      	push	{r4, lr}  100752:	1c04      	mov	r4, r0		(add r4, r0, #0)  100754:	2080      	mov	r0, #128  100756:	0080      	lsl	r0, r0, #2  100758:	ffb6f7ff 	bl	1006c8 <mmcSetBlockLength>  10075c:	2800      	cmp	r0, #0  10075e:	d001      	beq	100764 <mmcWriteBlock+0x14>  100760:	2401      	mov	r4, #1  100762:	e020      	b	1007a6 <mmcWriteBlock+0x56>  100764:	2018      	mov	r0, #24  100766:	1c21      	mov	r1, r4		(add r1, r4, #0)  100768:	22ff      	mov	r2, #255  10076a:	ff21f7ff 	bl	1005b0 <mmcSendCmd>  10076e:	2000      	mov	r0, #0  100770:	ff78f7ff 	bl	100664 <mmcGetXXResponse>  100774:	2800      	cmp	r0, #0  100776:	d115      	bne	1007a4 <mmcWriteBlock+0x54>  100778:	20ff      	mov	r0, #255  10077a:	ff07f7ff 	bl	10058c <spiSendByte>  10077e:	20fe      	mov	r0, #254  100780:	ff04f7ff 	bl	10058c <spiSendByte>  100784:	4c0b      	ldr	r4, [pc, #44]	(1007b4 <.text+0x7b4>)  100786:	7820      	ldrb	r0, [r4, #0]  100788:	ff00f7ff 	bl	10058c <spiSendByte>  10078c:	4b0a      	ldr	r3, [pc, #40]	(1007b8 <.text+0x7b8>)  10078e:	3401      	add	r4, #1  100790:	429c      	cmp	r4, r3  100792:	d1f8      	bne	100786 <mmcWriteBlock+0x36>  100794:	20ff      	mov	r0, #255  100796:	fef9f7ff 	bl	10058c <spiSendByte>  10079a:	20ff      	mov	r0, #255  10079c:	fef6f7ff 	bl	10058c <spiSendByte>  1007a0:	ff72f7ff 	bl	100688 <mmcCheckBusy>  1007a4:	2402      	mov	r4, #2  1007a6:	20ff      	mov	r0, #255  1007a8:	fef0f7ff 	bl	10058c <spiSendByte>  1007ac:	1c20      	mov	r0, r4		(add r0, r4, #0)  1007ae:	bc10      	pop	{r4}  1007b0:	bc02      	pop	{r1}  1007b2:	4708      	bx	r1  1007b4:	0066      	lsl	r6, r4, #1  1007b6:	0020      	lsl	r0, r4, #0  1007b8:	0266      	lsl	r6, r4, #9  1007ba:	0020      	lsl	r0, r4, #0001007bc <spiWriteByte>:
void spiWriteByte(const unsigned char data)
{
  //while(SSIOST_bit.BUSY != 0);      // Wait until the character can be sent
  //SSIOINT_bit.TXCMP = 1;            // clear interrupt register
  //SSIOBUF = data;

  //while((s_pSpi->SPI_SR & AT91C_SPI_RDRF) == 1);    // Wait until the character can be sent
  //s_pSpi->SPI_RDR = data;                           // Send the data
}
  1007bc:	4770      	bx	lr	...001007c0 <spiReadByte>:
unsigned char spiReadByte()
{
  //unsigned char spib;
  //while(SSIOINT_bit.RXCMP == 0);
  //spib = SSIOBUF;                   // Get the data received
  //SSIOINT_bit.RXCMP = 1;            //clear interrupt register
  //return spib;
  return 0;
}
  1007c0:	2000      	mov	r0, #0  1007c2:	4770      	bx	lr001007c4 <mmcReadRegister>:
// Reading the contents of the CSD and CID registers in SPI mode is a simple
// read-block transaction.

char mmcReadRegister (const char cmd_register, const unsigned char length)
{
  1007c4:	b570      	push	{r4, r5, r6, lr}  1007c6:	0609      	lsl	r1, r1, #24  1007c8:	0600      	lsl	r0, r0, #24  1007ca:	0e0e      	lsr	r6, r1, #24  1007cc:	0e04      	lsr	r4, r0, #24  char uc = 0;
  char rvalue = MMC_TIMEOUT_ERROR;
//  char i = 0;

  if (mmcSetBlockLength (length) == MMC_SUCCESS)
  1007ce:	1c30      	mov	r0, r6		(add r0, r6, #0)  1007d0:	ff7af7ff 	bl	1006c8 <mmcSetBlockLength>  1007d4:	2800      	cmp	r0, #0  1007d6:	d001      	beq	1007dc <mmcReadRegister+0x18>  1007d8:	24ff      	mov	r4, #255  1007da:	e025      	b	100828 <mmcReadRegister+0x64>    {
      //CS_LOW ();
      // CRC
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