Niestety problem jaki mam zmusił mnie do poproszenia o pomoc bardziej doświadczonych użytkowników... próbuję dobrać się do karty pamięci jednakże nie udaje mi się utworzyć na karcie SD pliku. Może najpierw pokażę kod a potem wyjaśnię gdzie jest problem.
Inicjalizacja SPI
[syntax=c]void SPI_SD_Init( void )
{
RCC->AHB1ENR |= RCC_AHB1ENR_GPIOBEN;
RCC->APB1ENR |= RCC_APB1ENR_SPI2EN;
GPIOB->MODER |= GPIO_MODER_MODER11_0;
GPIOB->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR11;
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_SPI2);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_13;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOB, &GPIO_InitStruct);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_SPI2);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_14;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOB, &GPIO_InitStruct);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_SPI2);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_15;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOB, &GPIO_InitStruct);
SPI_InitTypeDef SPI_InitStruct;
SPI_InitStruct.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStruct.SPI_Mode = SPI_Mode_Master;
SPI_InitStruct.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStruct.SPI_CPOL = SPI_CPOL_High;
SPI_InitStruct.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStruct.SPI_NSS = SPI_NSS_Soft;
SPI_InitStruct.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256;
SPI_InitStruct.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStruct.SPI_CRCPolynomial = 7;
SPI_Init(SPI2, &SPI_InitStruct);
SPI_CalculateCRC(SPI2, DISABLE);
SPI_Cmd(SPI2, ENABLE);
DESELECT();
}[/syntax]
Funkcja DESELECT() powoduje ustawienie CS karty na 1.
disk_initialize()
[syntax=c]DSTATUS disk_initialize (
BYTE drv /* Physical drive nmuber (0) */
)
{
BYTE n, ty, ocr[4];
if (drv) return STA_NOINIT; /* Supports only single drive */
if (Stat & STA_NODISK) return Stat; /* No card in the socket */
power_on(); /* Force socket power on */
//send_initial_clock_train();
SELECT(); /* CS = L */
ty = 0;
if (send_cmd(CMD0, 0) == 1) { /* Enter Idle state */
Timer1 = 100; /* Initialization timeout of 1000 msec */
if (send_cmd(CMD8, 0x1AA) == 1) { /* SDC Ver2+ */
for (n = 0; n < 4; n++) ocr[n] = rcvr_spi();
if (ocr[2] == 0x01 && ocr[3] == 0xAA) { /* The card can work at vdd range of 2.7-3.6V */
do {
if (send_cmd(CMD55, 0) <= 1 && send_cmd(CMD41, 1UL << 30) == 0) break; /* ACMD41 with HCS bit */
} while (Timer1);
if (Timer1 && send_cmd(CMD58, 0) == 0) { /* Check CCS bit */
for (n = 0; n < 4; n++) ocr[n] = rcvr_spi();
ty = (ocr[0] & 0x40) ? 6 : 2;
}
}
} else { /* SDC Ver1 or MMC */
ty = (send_cmd(CMD55, 0) <= 1 && send_cmd(CMD41, 0) <= 1) ? 2 : 1; /* SDC : MMC */
do {
if (ty == 2) {
if (send_cmd(CMD55, 0) <= 1 && send_cmd(CMD41, 0) == 0) break; /* ACMD41 */
} else {
if (send_cmd(CMD1, 0) == 0) break; /* CMD1 */
}
} while (Timer1);
if (!Timer1 || send_cmd(CMD16, 512) != 0) /* Select R/W block length */
ty = 0;
}
}
CardType = ty;
DESELECT(); /* CS = H */
rcvr_spi(); /* Idle (Release DO) */
if (ty) /* Initialization succeded */
{Stat &= ~STA_NOINIT;
FCLK_FAST();}/* Clear STA_NOINIT */
else /* Initialization failed */
power_off();
return Stat;
}[/syntax]
FCLK - oba
[syntax=c]static void FCLK_SLOW(void) /* Set slow clock (100k-400k) */
{
DWORD tmp;
tmp = SPI2->CR1;
tmp = ( tmp | SPI_BaudRatePrescaler_256 | SPI_BaudRatePrescaler_4);
SPI2->CR1 = tmp;
}
static void FCLK_FAST(void) /* Set fast clock (depends on the CSD) */
{
DWORD tmp;
tmp = SPI2->CR1;
tmp = ( tmp & ~SPI_BaudRatePrescaler_256 ) | SPI_BaudRatePrescaler_16; // 168MHz/16 here
SPI2->CR1 = tmp;
}[/syntax]
power_on()
[syntax=c]static
void power_on (void)
{
u8 i;
DESELECT(); // CS = 1
FCLK_SLOW();
//Wyslanie 10 razy 0xFF co daje ponad 80 (>74) cykle zegara
//wymagane przez specyfikacje SD
for (i = 0; i < 10; i++)
xmit_spi(0xFF);
PowerFlag = 1;
}[/syntax]
oraz main
[syntax]int main ()
{
system_init();
delay_init(168);
pll_start(8000000,168000000);
Initialize_Data_GPIO();
Initialize_Control_GPIO();
Initialize_SSD1963();
SPI_SD_Init();
SysTick_Config(SysTick_Frequency / 100);
SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8);
Write_Command(0x2C);
Clear_Screen(0x001F);
delay_ms(1000);
intro();
Wynik = disk_initialize(0);
if(Wynik == STA_NOINIT)
{
Put_Char(50,50,'k',0xF800,0xFFFF);
}
fresult = f_mount(0, &g_sFatFs);
if(fresult == FR_OK)
{
Put_Char(100,50,'o',0xF800,0xFFFF);
fresult = f_open(&plik, "plik.txt", FA_CREATE_ALWAYS);
if(fresult == FR_OK)
{
Put_Char(109,50,'0',0xF800,0xFFFF);
}
else if(fresult == FR_DISK_ERR)
{
Put_Char(109,50,'1',0xF800,0xFFFF);
}
else if(fresult == FR_INT_ERR)
{
Put_Char(109,50,'2',0xF800,0xFFFF);
}
else if(fresult == FR_NOT_READY)
{
Put_Char(109,50,'3',0xF800,0xFFFF);
}
else if(fresult == FR_NO_FILE)
{
Put_Char(109,50,'4',0xF800,0xFFFF);
}
else if(fresult == FR_NO_PATH)
{
Put_Char(109,50,'5',0xF800,0xFFFF);
}
else if(fresult == FR_INVALID_NAME)
{
Put_Char(109,50,'6',0xF800,0xFFFF);
}
else if(fresult == FR_DENIED)
{
Put_Char(109,50,'7',0xF800,0xFFFF);
}
else if(fresult == FR_EXIST)
{
Put_Char(109,50,'8',0xF800,0xFFFF);
}
else if(fresult == FR_INVALID_OBJECT)
{
Put_Char(109,50,'9',0xF800,0xFFFF);
}
else if(fresult == FR_WRITE_PROTECTED)
{
Put_Char(109,50,'A',0xF800,0xFFFF);
}
else if(fresult == FR_INVALID_DRIVE)
{
Put_Char(109,50,'B',0xF800,0xFFFF);
}
else if(fresult == FR_NOT_ENABLED)
{
Put_Char(109,50,'C',0xF800,0xFFFF);
}
else if(fresult == FR_NO_FILESYSTEM)
{
Put_Char(109,50,'D',0xF800,0xFFFF);
}
else if(fresult == FR_MKFS_ABORTED)
{
Put_Char(109,50,'E',0xF800,0xFFFF);
}
else if(fresult == FR_TIMEOUT)
{
Put_Char(109,50,'F',0xF800,0xFFFF);
}
else if(fresult == FR_LOCKED)
{
Put_Char(109,50,'G',0xF800,0xFFFF);
}
else if(fresult == FR_NOT_ENOUGH_CORE)
{
Put_Char(109,50,'H',0xF800,0xFFFF);
}
else if(fresult == FR_TOO_MANY_OPEN_FILES)
{
Put_Char(109,50,'I',0xF800,0xFFFF);
}
}[/syntax]
na wyświetlaczu pojawia mi się literka 'k' znacząca o nieudanej inicjalizacji disk_init... oraz 'o3' znaczące kolejno FR_OK z z f_mount oraz FR_NOT_READY z f_open <- skutek błędnej inicjalizacji. dodatkowo ustaliłem, że karta nie wchodzi w stan natywny, ponieważ po użyciu kodu:
[syntax=c]DSTATUS disk_initialize (
BYTE drv /* Physical drive nmuber (0) */
)
{
BYTE n, ty, ocr[4];
if (drv) return STA_NOINIT; /* Supports only single drive */
if (Stat & STA_NODISK) return Stat; /* No card in the socket */
power_on(); /* Force socket power on */
//send_initial_clock_train();
Put_Char(40,50,'1',0xF800,0xFFFF);
SELECT(); /* CS = L */
ty = 0;
if (send_cmd(CMD0, 0) == 1) { /* Enter Idle state */
Timer1 = 100; /* Initialization timeout of 1000 msec */
Put_Char(40,70,'2',0xF800,0xFFFF);
if (send_cmd(CMD8, 0x1AA) == 1) { /* SDC Ver2+ */
Put_Char(40,90,'3',0xF800,0xFFFF);
for (n = 0; n < 4; n++) ocr[n] = rcvr_spi();
if (ocr[2] == 0x01 && ocr[3] == 0xAA) { /* The card can work at vdd range of 2.7-3.6V */
do {
if (send_cmd(CMD55, 0) <= 1 && send_cmd(CMD41, 1UL << 30) == 0) break; /* ACMD41 with HCS bit */
} while (Timer1);
if (Timer1 && send_cmd(CMD58, 0) == 0) { /* Check CCS bit */
for (n = 0; n < 4; n++) ocr[n] = rcvr_spi();
ty = (ocr[0] & 0x40) ? 6 : 2;
}
}
} else { /* SDC Ver1 or MMC */
Put_Char(40,110,'4',0xF800,0xFFFF);
ty = (send_cmd(CMD55, 0) <= 1 && send_cmd(CMD41, 0) <= 1) ? 2 : 1; /* SDC : MMC */
do {
if (ty == 2) {
if (send_cmd(CMD55, 0) <= 1 && send_cmd(CMD41, 0) == 0) break; /* ACMD41 */
} else {
if (send_cmd(CMD1, 0) == 0) break; /* CMD1 */
}
} while (Timer1);
if (!Timer1 || send_cmd(CMD16, 512) != 0) /* Select R/W block length */
ty = 0;
}
}
Put_Char(40,130,'5',0xF800,0xFFFF);
CardType = ty;
DESELECT(); /* CS = H */
rcvr_spi(); /* Idle (Release DO) */
if (ty) /* Initialization succeded */
Stat &= ~STA_NOINIT; /* Clear STA_NOINIT */
else /* Initialization failed */
power_off();
return Stat;
}[/syntax]
otrzymuje cyfry 1 oraz 5. Tak więc warunek dotyczący CMD0 nie jest spełniony.
Jak widzicie funkcji jest sporo, zależności pomiędzy nimi również. Próbowałem już wielu rzeczy i nie bardzo wiem gdzie jest problem. Gdyby ktoś mógł zerknąć na kod i coś mi podpowiedzieć byłbym wielce wdzięczny
EDIT:
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Giani91
Statystyki: Napisane przez Giani91 — 12 sty 2014, o 21:09
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