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SD SPI implementation finished

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This commit is contained in:
marqs
2016-10-21 01:19:53 +03:00
parent 71d60144e8
commit f55e9a877e
46 changed files with 2349 additions and 3392 deletions
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software/sys_controller_bsp/drivers/src/i2c_opencores.c
+22 -16
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@@ -182,25 +182,31 @@ alt_u32 I2C_write(alt_u32 base,alt_u8 data, alt_u32 last)
}
alt_u32 SPI_read(alt_u32 base)
void SPI_read(alt_u32 base, alt_u8 *rdata, int len)
{
/* start read*/
IOWR_I2C_OPENCORES_CR(base, I2C_OPENCORES_CR_RD_MSK|I2C_OPENCORES_CR_NACK_MSK|I2C_OPENCORES_CR_SPIM_MSK );
int i;
/* wait for the trnasaction to be over.*/
while( IORD_I2C_OPENCORES_SR(base) & I2C_OPENCORES_SR_TIP_MSK);
/* now read the data */
return (IORD_I2C_OPENCORES_RXR(base));
for (i=0; i<len; i++) {
/* start read*/
IOWR_I2C_OPENCORES_CR(base, I2C_OPENCORES_CR_RD_MSK|I2C_OPENCORES_CR_NACK_MSK|I2C_OPENCORES_CR_SPIM_MSK );
/* wait for the trnasaction to be over.*/
while( IORD_I2C_OPENCORES_SR(base) & I2C_OPENCORES_SR_TIP_MSK);
/* now read the data */
if (rdata)
rdata[i] = IORD_I2C_OPENCORES_RXR(base);
}
}
void SPI_write(alt_u32 base,alt_u8 data) {
/* transmit the data*/
IOWR_I2C_OPENCORES_TXR(base, data);
void SPI_write(alt_u32 base, alt_u8 *wdata, int len)
{
int i;
/* start write */
IOWR_I2C_OPENCORES_CR(base, I2C_OPENCORES_CR_WR_MSK|I2C_OPENCORES_CR_NACK_MSK|I2C_OPENCORES_CR_SPIM_MSK );
/* wait for the trnasaction to be over.*/
while( IORD_I2C_OPENCORES_SR(base) & I2C_OPENCORES_SR_TIP_MSK);
for (i=0; i<len; i++) {
/* transmit the data*/
IOWR_I2C_OPENCORES_TXR(base, wdata[i]);
/* start write */
IOWR_I2C_OPENCORES_CR(base, I2C_OPENCORES_CR_WR_MSK|I2C_OPENCORES_CR_NACK_MSK|I2C_OPENCORES_CR_SPIM_MSK );
/* wait for the trnasaction to be over.*/
while( IORD_I2C_OPENCORES_SR(base) & I2C_OPENCORES_SR_TIP_MSK);
}
}