#include "ccdbg.h"
#include <time.h>
+#ifdef CP_USB_ASYNC
+#include "cp-usb-async.h"
+#else
+#include "cp-usb.h"
+#endif
+
+static uint32_t cc_clock_us = CC_CLOCK_US;
+static uint32_t cc_reset_us = CC_RESET_US;
+
+void
+ccdbg_set_clock(uint32_t us)
+{
+ cc_clock_us = us;
+}
void
ccdbg_half_clock(struct ccdbg *dbg)
{
struct timespec req, rem;
- req.tv_sec = (CC_CLOCK_US / 2) / 1000000;
- req.tv_nsec = ((CC_CLOCK_US / 2) % 1000000) * 1000;
+ req.tv_sec = (cc_clock_us / 2) / 1000000;
+ req.tv_nsec = ((cc_clock_us / 2) % 1000000) * 1000;
nanosleep(&req, &rem);
}
+void
+ccdbg_wait_reset(struct ccdbg *dbg)
+{
+ struct timespec req, rem;
+
+ ccdbg_sync_io(dbg);
+ req.tv_sec = (cc_reset_us) / 1000000;
+ req.tv_nsec = ((cc_reset_us) % 1000000) * 1000;
+ nanosleep(&req, &rem);
+}
+
struct ccdbg *
ccdbg_open(void)
{
perror("calloc");
return NULL;
}
+#ifdef CP_USB_ASYNC
+ dbg->cp_async = cp_usb_async_open();
+ if (!dbg->cp_async) {
+ free (dbg);
+ return NULL;
+ }
+#else
dbg->cp = cp_usb_open ();
if (!dbg->cp) {
free (dbg);
return NULL;
}
+#endif
return dbg;
}
void
ccdbg_close(struct ccdbg *dbg)
{
+#ifdef CP_USB_ASYNC
+ cp_usb_async_close(dbg->cp_async);
+#else
cp_usb_close(dbg->cp);
+#endif
free (dbg);
}
int
ccdbg_write(struct ccdbg *dbg, uint8_t mask, uint8_t value)
{
+#ifdef CP_USB_ASYNC
+ cp_usb_async_write(dbg->cp_async, mask, value);
+#else
cp_usb_write(dbg->cp, mask, value);
+#endif
return 0;
}
-uint8_t
-ccdbg_read(struct ccdbg *dbg)
+void
+ccdbg_read(struct ccdbg *dbg, uint8_t *valuep)
{
- return cp_usb_read(dbg->cp);
+#ifdef CP_USB_ASYNC
+ cp_usb_async_read(dbg->cp_async, valuep);
+#else
+ *valuep = cp_usb_read(dbg->cp);
+#endif
+}
+
+void
+ccdbg_sync_io(struct ccdbg *dbg)
+{
+#ifdef CP_USB_ASYNC
+ cp_usb_async_sync(dbg->cp_async);
+#endif
}
static char
if (bit == 3)
ccdbg_debug(CC_DEBUG_BITBANG, "\n");
}
+ ccdbg_sync_io(dbg);
}
void
ccdbg_send_byte(dbg, *bytes++);
}
-uint8_t
-ccdbg_recv_bit(struct ccdbg *dbg, int first)
+void
+ccdbg_recv_bit(struct ccdbg *dbg, int first, uint8_t *bit)
{
uint8_t mask = first ? CC_DATA : 0;
- uint8_t read;
ccdbg_send(dbg, CC_CLOCK|mask|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
- read = ccdbg_read(dbg);
+ ccdbg_read(dbg, bit);
ccdbg_send(dbg, CC_CLOCK| CC_RESET_N, CC_RESET_N);
- return (read & CC_DATA) ? 1 : 0;
}
-uint8_t
-ccdbg_recv_byte(struct ccdbg *dbg, int first)
+void
+ccdbg_recv_byte(struct ccdbg *dbg, int first, uint8_t *bytep)
{
uint8_t byte = 0;
+ uint8_t bits[8];
int bit;
ccdbg_debug(CC_DEBUG_BITBANG, "#\n# Recv byte\n#\n");
+ for (bit = 0; bit < 8; bit++) {
+ ccdbg_recv_bit(dbg, first, &bits[bit]);
+ first = 0;
+ }
+ ccdbg_sync_io(dbg);
for (bit = 0; bit < 8; bit++) {
byte = byte << 1;
- byte |= ccdbg_recv_bit(dbg, first);
+ byte |= (bits[bit] & CC_DATA) ? 1 : 0;
+ ccdbg_print("#\t%c %c %c\n", CC_DATA, bits[bit]);
if (bit == 3)
ccdbg_debug(CC_DEBUG_BITBANG, "\n");
- first = 0;
}
ccdbg_debug(CC_DEBUG_BITBANG, "#\n# Recv 0x%02x\n#\n", byte);
- return byte;
+ *bytep = byte;
}
void
ccdbg_recv_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes)
{
+ int i;
int first = 1;
- while (nbytes--) {
- *bytes++ = ccdbg_recv_byte(dbg, first);
+ for (i = 0; i < nbytes; i++) {
+ ccdbg_recv_byte(dbg, first, &bytes[i]);
first = 0;
}
}