static int buspirate_execute_queue(void);
static int buspirate_init(void);
static int buspirate_quit(void);
+static int buspirate_reset(int trst, int srst);
static void buspirate_end_state(tap_state_t state);
static void buspirate_state_move(void);
struct scan_command *command);
static void buspirate_tap_make_space(int scan, int bits);
-static void buspirate_reset(int trst, int srst);
static void buspirate_set_feature(int, char, char);
static void buspirate_set_mode(int, char);
static void buspirate_set_speed(int, char);
buffer, scan_size, cmd->cmd.scan);
break;
- case JTAG_RESET:
- LOG_DEBUG_IO("reset trst: %i srst %i",
- cmd->cmd.reset->trst, cmd->cmd.reset->srst);
-
- /* flush buffers, so we can reset */
- buspirate_tap_execute();
-
- if (cmd->cmd.reset->trst == 1)
- tap_set_state(TAP_RESET);
- buspirate_reset(cmd->cmd.reset->trst,
- cmd->cmd.reset->srst);
- break;
case JTAG_SLEEP:
LOG_DEBUG_IO("sleep %i", cmd->cmd.sleep->us);
buspirate_tap_execute();
.transports = buspirate_transports,
.swd = &buspirate_swd,
.init = buspirate_init,
- .quit = buspirate_quit
+ .quit = buspirate_quit,
+ .reset = buspirate_reset,
};
/*************** jtag execute commands **********************/
/*************** wrapper functions *********************/
/* (1) assert or (0) deassert reset lines */
-static void buspirate_reset(int trst, int srst)
+static int buspirate_reset(int trst, int srst)
{
LOG_DEBUG("trst: %i, srst: %i", trst, srst);
buspirate_set_feature(buspirate_fd, FEATURE_SRST, ACTION_DISABLE);
else
buspirate_set_feature(buspirate_fd, FEATURE_SRST, ACTION_ENABLE);
+
+ return ERROR_OK;
}
static void buspirate_set_feature(int fd, char feat, char action)
{
const uint8_t *sequence;
int sequence_len;
- uint8_t tmp[64];
+ uint32_t no_bytes, sequence_offset;
switch (seq) {
case LINE_RESET:
return ERROR_FAIL;
}
- /* FIXME: all above sequences fit into one pirate command for now
- * but it may cause trouble later
- */
+ no_bytes = sequence_len;
+ sequence_offset = 0;
+
+ while (no_bytes) {
+ uint8_t tmp[17];
+ uint32_t to_send;
+
+ to_send = no_bytes > 16 ? 16 : no_bytes;
+
+ tmp[0] = 0x10 + ((to_send - 1) & 0x0F);
+ memcpy(tmp + 1, &sequence[sequence_offset], to_send);
- tmp[0] = 0x10 + ((sequence_len - 1) & 0x0F);
- memcpy(tmp + 1, sequence, sequence_len);
+ buspirate_serial_write(buspirate_fd, tmp, to_send + 1);
+ buspirate_serial_read(buspirate_fd, tmp, to_send + 1);
- buspirate_serial_write(buspirate_fd, tmp, sequence_len + 1);
- buspirate_serial_read(buspirate_fd, tmp, sequence_len + 1);
+ no_bytes -= to_send;
+ sequence_offset += to_send;
+ }
return ERROR_OK;
}