mirror of https://github.com/m-labs/artiq.git
43 lines
803 B
C
43 lines
803 B
C
|
#include <hw/common.h>
|
||
|
|
|
||
|
|
#include "dds.h"
|
||
|
|
|
||
|
|
#define DDS_FTW0 0x0a
|
||
|
|
#define DDS_FTW1 0x0b
|
||
|
|
#define DDS_FTW2 0x0c
|
||
|
|
#define DDS_FTW3 0x0d
|
||
|
|
#define DDS_FUD 0x40
|
||
|
|
#define DDS_GPIO 0x41
|
||
|
|
|
||
|
|
#define DDS_READ(addr) \
|
||
|
|
MMPTR(0xb0000000 + (addr)*4)
|
||
|
|
|
||
|
|
#define DDS_WRITE(addr, data) \
|
||
|
|
MMPTR(0xb0000000 + (addr)*4) = data
|
||
|
|
|
||
|
|
void dds_init(void)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
DDS_WRITE(DDS_GPIO, 1 << 7);
|
||
|
|
|
||
|
|
for(i=0;i<8;i++) {
|
||
|
|
DDS_WRITE(DDS_GPIO, i);
|
||
|
|
DDS_WRITE(0x00, 0x78);
|
||
|
|
DDS_WRITE(0x01, 0x00);
|
||
|
|
DDS_WRITE(0x02, 0x00);
|
||
|
|
DDS_WRITE(0x03, 0x00);
|
||
|
|
DDS_WRITE(DDS_FUD, 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void dds_program(int channel, int ftw)
|
||
|
|
{
|
||
|
|
DDS_WRITE(DDS_GPIO, channel);
|
||
|
|
DDS_WRITE(DDS_FTW0, ftw & 0xff);
|
||
|
|
DDS_WRITE(DDS_FTW1, (ftw >> 8) & 0xff);
|
||
|
|
DDS_WRITE(DDS_FTW2, (ftw >> 16) & 0xff);
|
||
|
|
DDS_WRITE(DDS_FTW3, (ftw >> 24) & 0xff);
|
||
|
|
DDS_WRITE(DDS_FUD, 0);
|
||
|
|
}
|