static int config_commit(const struct sr_dev_inst *sdi)
{
uint8_t state = hung_chang_dso_2100_read_mbox(sdi->conn, 0.02);
int ret;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
switch (state) {
case 0x03:
case 0x14:
case 0x21:
/* we will travel the complete config path on our way to state 1 */
break;
case 0x00:
state = 0x01;
default:
ret = hung_chang_dso_2100_move_to(sdi, 1);
if (ret != SR_OK)
return ret;
case 0x01:
hung_chang_dso_2100_write_mbox(sdi->conn, 4);
}
ret = hung_chang_dso_2100_move_to(sdi, 1);
if (ret != SR_OK)
return ret;
return hung_chang_dso_2100_move_to(sdi, state);
}
SR_PRIV int hung_chang_dso_2100_poll(int fd, int revents, void *cb_data)
{
struct sr_datafeed_packet packet = { .type = SR_DF_FRAME_BEGIN };
const struct sr_dev_inst *sdi;
struct dev_context *devc;
uint8_t state, buf[1000];
(void)fd;
(void)revents;
if (!(sdi = cb_data))
return TRUE;
if (!(devc = sdi->priv))
return TRUE;
if (devc->state_known)
hung_chang_dso_2100_write_mbox(sdi->conn, 0x99);
state = hung_chang_dso_2100_read_mbox(sdi->conn, 0.00025);
devc->state_known = (state != 0x00);
if (!devc->state_known || state == 0x21)
return TRUE;
if (state != 0x03) {
sr_err("Unexpected state 0x%X while checking for trigger", state);
return FALSE;
}
sr_session_send(sdi, &packet);
if (devc->channel) {
while (read_subframe(sdi, buf)) {
if (hung_chang_dso_2100_move_to(sdi, 1) != SR_OK)
break;
hung_chang_dso_2100_write_mbox(sdi->conn, 3);
g_usleep(1700);
if (hung_chang_dso_2100_read_mbox(sdi->conn, 0.02) != 0x03)
break;
}
}
packet.type = SR_DF_FRAME_END;
sr_session_send(sdi, &packet);
if (++devc->frame >= devc->frame_limit)
hung_chang_dso_2100_dev_acquisition_stop(sdi);
else
hung_chang_dso_2100_move_to(sdi, 0x21);
return TRUE;
}
static int dev_acquisition_start(const struct sr_dev_inst *sdi,
void *cb_data)
{
struct dev_context *devc = sdi->priv;
int ret;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
if (devc->channel) {
static const float res_array[] = {0.5, 1, 2, 5};
static const uint8_t relays[] = {100, 10, 10, 1};
devc->factor = devc->probe[devc->channel - 1] / 32.0;
devc->factor *= res_array[devc->cctl[devc->channel - 1] & 0x03];
devc->factor /= relays[(devc->cctl[devc->channel - 1] >> 4) & 0x03];
}
devc->frame = 0;
devc->cb_data = cb_data;
devc->state_known = TRUE;
devc->step = 0;
devc->adc2 = FALSE;
devc->retries = MAX_RETRIES;
ret = hung_chang_dso_2100_move_to(sdi, 0x21);
if (ret != SR_OK)
return ret;
std_session_send_df_header(cb_data, LOG_PREFIX);
sr_session_source_add(sdi->session, 0, 0, 8,
hung_chang_dso_2100_poll, (void *)sdi);
return SR_OK;
}
static int dev_open(struct sr_dev_inst *sdi)
{
struct dev_context *devc = sdi->priv;
int i;
if (ieee1284_open(sdi->conn, 0, &i) != E1284_OK)
goto fail1;
if (ieee1284_claim(sdi->conn) != E1284_OK)
goto fail2;
if (ieee1284_data_dir(sdi->conn, 1) != E1284_OK)
goto fail3;
if (hung_chang_dso_2100_move_to(sdi, 1))
goto fail3;
devc->samples = g_try_malloc(1000 * sizeof(*devc->samples));
if (!devc->samples)
goto fail3;
return SR_OK;
fail3:
hung_chang_dso_2100_reset_port(sdi->conn);
ieee1284_release(sdi->conn);
fail2:
ieee1284_close(sdi->conn);
fail1:
return SR_ERR;
}
static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
std_session_send_df_end(sdi);
sr_session_source_remove(sdi->session, -1);
hung_chang_dso_2100_move_to(sdi, 1);
return SR_OK;
}
SR_PRIV int hung_chang_dso_2100_dev_acquisition_stop(const struct sr_dev_inst *sdi)
{
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
std_session_send_df_end(sdi);
sr_session_source_remove(sdi->session, -1);
hung_chang_dso_2100_move_to(sdi, 1);
return SR_OK;
}
SR_PRIV int hung_chang_dso_2100_dev_acquisition_stop(const struct sr_dev_inst *sdi,
void *cb_data)
{
struct sr_datafeed_packet packet = { .type = SR_DF_END };
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
sr_session_send(cb_data, &packet);
sr_session_source_remove(sdi->session, 0);
hung_chang_dso_2100_move_to(sdi, 1);
return SR_OK;
}
