From 269971ddce18664a2ad06b7e2f56dcad70d155bb Mon Sep 17 00:00:00 2001 From: Bert Vermeulen Date: Mon, 30 Jul 2012 00:24:26 +0200 Subject: [PATCH] hantek-dso: use driver-private storage for instances and libusb_context --- hardware/hantek-dso/api.c | 279 +++++++++++++++++++++----------------- hardware/hantek-dso/dso.c | 258 ++++++++++++++++++----------------- hardware/hantek-dso/dso.h | 19 ++- 3 files changed, 295 insertions(+), 261 deletions(-) diff --git a/hardware/hantek-dso/api.c b/hardware/hantek-dso/api.c index addc2903..31b52509 100644 --- a/hardware/hantek-dso/api.c +++ b/hardware/hantek-dso/api.c @@ -144,15 +144,17 @@ static const char *coupling[] = { NULL, }; -SR_PRIV libusb_context *usb_context = NULL; SR_PRIV struct sr_dev_driver hantek_dso_driver_info; static struct sr_dev_driver *hdi = &hantek_dso_driver_info; +static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi, + void *cb_data); static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof) { struct sr_dev_inst *sdi; struct sr_probe *probe; - struct context *ctx; + struct drv_context *drvc; + struct dev_context *devc; int i; sdi = sr_dev_inst_new(index, SR_ST_INITIALIZING, @@ -171,44 +173,45 @@ static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof sdi->probes = g_slist_append(sdi->probes, probe); } - if (!(ctx = g_try_malloc0(sizeof(struct context)))) { - sr_err("hantek-dso: ctx malloc failed"); + if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { + sr_err("hantek-dso: devc malloc failed"); return NULL; } - ctx->profile = prof; - ctx->dev_state = IDLE; - ctx->timebase = DEFAULT_TIMEBASE; - ctx->ch1_enabled = TRUE; - ctx->ch2_enabled = TRUE; - ctx->voltage_ch1 = DEFAULT_VOLTAGE; - ctx->voltage_ch2 = DEFAULT_VOLTAGE; - ctx->coupling_ch1 = DEFAULT_COUPLING; - ctx->coupling_ch2 = DEFAULT_COUPLING; - ctx->voffset_ch1 = DEFAULT_VERT_OFFSET; - ctx->voffset_ch2 = DEFAULT_VERT_OFFSET; - ctx->voffset_trigger = DEFAULT_VERT_TRIGGERPOS; - ctx->framesize = DEFAULT_FRAMESIZE; - ctx->triggerslope = SLOPE_POSITIVE; - ctx->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE); - ctx->triggerposition = DEFAULT_HORIZ_TRIGGERPOS; - sdi->priv = ctx; - hdi->instances = g_slist_append(hdi->instances, sdi); + devc->profile = prof; + devc->dev_state = IDLE; + devc->timebase = DEFAULT_TIMEBASE; + devc->ch1_enabled = TRUE; + devc->ch2_enabled = TRUE; + devc->voltage_ch1 = DEFAULT_VOLTAGE; + devc->voltage_ch2 = DEFAULT_VOLTAGE; + devc->coupling_ch1 = DEFAULT_COUPLING; + devc->coupling_ch2 = DEFAULT_COUPLING; + devc->voffset_ch1 = DEFAULT_VERT_OFFSET; + devc->voffset_ch2 = DEFAULT_VERT_OFFSET; + devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS; + devc->framesize = DEFAULT_FRAMESIZE; + devc->triggerslope = SLOPE_POSITIVE; + devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE); + devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS; + sdi->priv = devc; + drvc = hdi->priv; + drvc->instances = g_slist_append(drvc->instances, sdi); return sdi; } -static int configure_probes(struct context *ctx, const GSList *probes) +static int configure_probes(struct dev_context *devc, const GSList *probes) { const struct sr_probe *probe; const GSList *l; - ctx->ch1_enabled = ctx->ch2_enabled = FALSE; + devc->ch1_enabled = devc->ch2_enabled = FALSE; for (l = probes; l; l = l->next) { probe = (struct sr_probe *)l->data; if (probe->index == 0) - ctx->ch1_enabled = probe->enabled; + devc->ch1_enabled = probe->enabled; else if (probe->index == 1) - ctx->ch2_enabled = probe->enabled; + devc->ch2_enabled = probe->enabled; } return SR_OK; @@ -218,40 +221,51 @@ static int configure_probes(struct context *ctx, const GSList *probes) static void clear_instances(void) { struct sr_dev_inst *sdi; - struct context *ctx; + struct drv_context *drvc; + struct dev_context *devc; GSList *l; - for (l = hdi->instances; l; l = l->next) { + drvc = hdi->priv; + for (l = drvc->instances; l; l = l->next) { if (!(sdi = l->data)) { /* Log error, but continue cleaning up the rest. */ sr_err("hantek-dso: %s: sdi was NULL, continuing", __func__); continue; } - if (!(ctx = sdi->priv)) { + if (!(devc = sdi->priv)) { /* Log error, but continue cleaning up the rest. */ sr_err("hantek-dso: %s: sdi->priv was NULL, continuing", __func__); continue; } dso_close(sdi); - sr_usb_dev_inst_free(ctx->usb); - g_free(ctx->triggersource); + sr_usb_dev_inst_free(devc->usb); + g_free(devc->triggersource); sr_dev_inst_free(sdi); } - g_slist_free(hdi->instances); - hdi->instances = NULL; + g_slist_free(drvc->instances); + drvc->instances = NULL; } static int hw_init(void) { + struct drv_context *drvc; - if (libusb_init(&usb_context) != 0) { + if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { + sr_err("hantek-dso: driver context malloc failed."); + return SR_ERR; + } + + if (libusb_init(&drvc->usb_context) != 0) { + g_free(drvc); sr_err("hantek-dso: Failed to initialize USB."); return SR_ERR; } + hdi->priv = drvc; + return SR_OK; } @@ -259,7 +273,8 @@ static GSList *hw_scan(GSList *options) { struct sr_dev_inst *sdi; const struct dso_profile *prof; - struct context *ctx; + struct drv_context *drvc; + struct dev_context *devc; GSList *devices; struct libusb_device_descriptor des; libusb_device **devlist; @@ -268,12 +283,13 @@ static GSList *hw_scan(GSList *options) (void)options; devcnt = 0; devices = 0; - hdi->instances = NULL; + drvc = hdi->priv; + drvc->instances = NULL; clear_instances(); /* Find all Hantek DSO devices and upload firmware to all of them. */ - libusb_get_device_list(usb_context, &devlist); + libusb_get_device_list(drvc->usb_context, &devlist); for (i = 0; devlist[i]; i++) { if ((ret = libusb_get_device_descriptor(devlist[i], &des))) { sr_err("hantek-dso: failed to get device descriptor: %d", ret); @@ -289,16 +305,16 @@ static GSList *hw_scan(GSList *options) sr_dbg("hantek-dso: Found a %s %s.", prof->vendor, prof->model); sdi = dso_dev_new(devcnt, prof); devices = g_slist_append(devices, sdi); - ctx = sdi->priv; + devc = sdi->priv; if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, prof->firmware) == SR_OK) /* Remember when the firmware on this device was updated */ - ctx->fw_updated = g_get_monotonic_time(); + devc->fw_updated = g_get_monotonic_time(); else sr_err("hantek-dso: firmware upload failed for " "device %d", devcnt); /* Dummy USB address of 0xff will get overwritten later. */ - ctx->usb = sr_usb_dev_inst_new( + devc->usb = sr_usb_dev_inst_new( libusb_get_bus_number(devlist[i]), 0xff, NULL); devcnt++; break; @@ -310,8 +326,8 @@ static GSList *hw_scan(GSList *options) sdi = dso_dev_new(devcnt, prof); sdi->status = SR_ST_INACTIVE; devices = g_slist_append(devices, sdi); - ctx = sdi->priv; - ctx->usb = sr_usb_dev_inst_new( + devc = sdi->priv; + devc->usb = sr_usb_dev_inst_new( libusb_get_bus_number(devlist[i]), libusb_get_device_address(devlist[i]), NULL); devcnt++; @@ -329,18 +345,18 @@ static GSList *hw_scan(GSList *options) static int hw_dev_open(struct sr_dev_inst *sdi) { - struct context *ctx; + struct dev_context *devc; int64_t timediff_us, timediff_ms; int err; - ctx = sdi->priv; + devc = sdi->priv; /* * if the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS * for the FX2 to renumerate */ err = SR_ERR; - if (ctx->fw_updated > 0) { + if (devc->fw_updated > 0) { sr_info("hantek-dso: waiting for device to reset"); /* takes at least 300ms for the FX2 to be gone from the USB bus */ g_usleep(300 * 1000); @@ -349,7 +365,7 @@ static int hw_dev_open(struct sr_dev_inst *sdi) if ((err = dso_open(sdi)) == SR_OK) break; g_usleep(100 * 1000); - timediff_us = g_get_monotonic_time() - ctx->fw_updated; + timediff_us = g_get_monotonic_time() - devc->fw_updated; timediff_ms = timediff_us / 1000; sr_spew("hantek-dso: waited %" PRIi64 " ms", timediff_ms); } @@ -363,7 +379,7 @@ static int hw_dev_open(struct sr_dev_inst *sdi) return SR_ERR; } - err = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE); + err = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE); if (err != 0) { sr_err("hantek-dso: Unable to claim interface: %d", err); return SR_ERR; @@ -382,12 +398,16 @@ static int hw_dev_close(struct sr_dev_inst *sdi) static int hw_cleanup(void) { + struct drv_context *drvc; + + if (!(drvc = hdi->priv)) + return SR_OK; clear_instances(); - if (usb_context) - libusb_exit(usb_context); - usb_context = NULL; + if (drvc->usb_context) + libusb_exit(drvc->usb_context); + drvc->usb_context = NULL; return SR_OK; } @@ -441,7 +461,7 @@ static int hw_info_get(int info_id, const void **data, static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, const void *value) { - struct context *ctx; + struct dev_context *devc; struct sr_rational tmp_rat; float tmp_float; uint64_t tmp_u64; @@ -452,19 +472,19 @@ static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, return SR_ERR; ret = SR_OK; - ctx = sdi->priv; + devc = sdi->priv; switch (hwcap) { case SR_HWCAP_LIMIT_FRAMES: - ctx->limit_frames = *(const uint64_t *)value; + devc->limit_frames = *(const uint64_t *)value; break; case SR_HWCAP_PROBECONFIG: - ret = configure_probes(ctx, (const GSList *)value); + ret = configure_probes(devc, (const GSList *)value); break; case SR_HWCAP_TRIGGER_SLOPE: tmp_u64 = *(const int *)value; if (tmp_u64 != SLOPE_NEGATIVE && tmp_u64 != SLOPE_POSITIVE) ret = SR_ERR_ARG; - ctx->triggerslope = tmp_u64; + devc->triggerslope = tmp_u64; break; case SR_HWCAP_HORIZ_TRIGGERPOS: tmp_float = *(const float *)value; @@ -472,13 +492,13 @@ static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, sr_err("hantek-dso: trigger position should be between 0.0 and 1.0"); ret = SR_ERR_ARG; } else - ctx->triggerposition = tmp_float; + devc->triggerposition = tmp_float; break; case SR_HWCAP_BUFFERSIZE: tmp_u64 = *(const int *)value; for (i = 0; buffersizes[i]; i++) { if (buffersizes[i] == tmp_u64) { - ctx->framesize = tmp_u64; + devc->framesize = tmp_u64; break; } } @@ -490,7 +510,7 @@ static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, for (i = 0; timebases[i].p && timebases[i].q; i++) { if (timebases[i].p == tmp_rat.p && timebases[i].q == tmp_rat.q) { - ctx->timebase = i; + devc->timebase = i; break; } } @@ -500,7 +520,7 @@ static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, case SR_HWCAP_TRIGGER_SOURCE: for (i = 0; trigger_sources[i]; i++) { if (!strcmp(value, trigger_sources[i])) { - ctx->triggersource = g_strdup(value); + devc->triggersource = g_strdup(value); break; } } @@ -508,18 +528,18 @@ static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, ret = SR_ERR_ARG; break; case SR_HWCAP_FILTER: - ctx->filter_ch1 = ctx->filter_ch2 = ctx->filter_trigger = 0; + devc->filter_ch1 = devc->filter_ch2 = devc->filter_trigger = 0; targets = g_strsplit(value, ",", 0); for (i = 0; targets[i]; i++) { if (targets[i] == '\0') /* Empty filter string can be used to clear them all. */ ; else if (!strcmp(targets[i], "CH1")) - ctx->filter_ch1 = TRUE; + devc->filter_ch1 = TRUE; else if (!strcmp(targets[i], "CH2")) - ctx->filter_ch2 = TRUE; + devc->filter_ch2 = TRUE; else if (!strcmp(targets[i], "TRIGGER")) - ctx->filter_trigger = TRUE; + devc->filter_trigger = TRUE; else { sr_err("invalid filter target %s", targets[i]); ret = SR_ERR_ARG; @@ -533,8 +553,8 @@ static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, for (i = 0; vdivs[i].p && vdivs[i].q; i++) { if (vdivs[i].p == tmp_rat.p && vdivs[i].q == tmp_rat.q) { - ctx->voltage_ch1 = i; - ctx->voltage_ch2 = i; + devc->voltage_ch1 = i; + devc->voltage_ch2 = i; break; } } @@ -545,8 +565,8 @@ static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, /* TODO not supporting coupling per channel yet */ for (i = 0; coupling[i]; i++) { if (!strcmp(value, coupling[i])) { - ctx->coupling_ch1 = i; - ctx->coupling_ch2 = i; + devc->coupling_ch1 = i; + devc->coupling_ch2 = i; break; } } @@ -560,7 +580,7 @@ static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, return ret; } -static void send_chunk(struct context *ctx, unsigned char *buf, +static void send_chunk(struct dev_context *devc, unsigned char *buf, int num_samples) { struct sr_datafeed_packet packet; @@ -568,7 +588,7 @@ static void send_chunk(struct context *ctx, unsigned char *buf, float ch1, ch2, range; int num_probes, data_offset, i; - num_probes = (ctx->ch1_enabled && ctx->ch2_enabled) ? 2 : 1; + num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1; packet.type = SR_DF_ANALOG; packet.payload = &analog; /* TODO: support for 5xxx series 9-bit samples */ @@ -588,21 +608,21 @@ static void send_chunk(struct context *ctx, unsigned char *buf, * 4V peak-to-peak where 0 = -2V and 255 = +2V. */ /* TODO: support for 5xxx series 9-bit samples */ - if (ctx->ch1_enabled) { - range = ((float)vdivs[ctx->voltage_ch1].p / vdivs[ctx->voltage_ch1].q) * 8; + if (devc->ch1_enabled) { + range = ((float)vdivs[devc->voltage_ch1].p / vdivs[devc->voltage_ch1].q) * 8; ch1 = range / 255 * *(buf + i * 2 + 1); /* Value is centered around 0V. */ ch1 -= range / 2; analog.data[data_offset++] = ch1; } - if (ctx->ch2_enabled) { - range = ((float)vdivs[ctx->voltage_ch2].p / vdivs[ctx->voltage_ch2].q) * 8; + if (devc->ch2_enabled) { + range = ((float)vdivs[devc->voltage_ch2].p / vdivs[devc->voltage_ch2].q) * 8; ch2 = range / 255 * *(buf + i * 2); ch2 -= range / 2; analog.data[data_offset++] = ch2; } } - sr_session_send(ctx->cb_data, &packet); + sr_session_send(devc->cb_data, &packet); } @@ -614,10 +634,10 @@ static void send_chunk(struct context *ctx, unsigned char *buf, static void receive_transfer(struct libusb_transfer *transfer) { struct sr_datafeed_packet packet; - struct context *ctx; + struct dev_context *devc; int num_samples, pre; - ctx = transfer->user_data; + devc = transfer->user_data; sr_dbg("hantek-dso: receive_transfer(): status %d received %d bytes", transfer->status, transfer->actual_length); @@ -627,8 +647,8 @@ static void receive_transfer(struct libusb_transfer *transfer) num_samples = transfer->actual_length / 2; - sr_dbg("hantek-dso: got %d-%d/%d samples in frame", ctx->samp_received + 1, - ctx->samp_received + num_samples, ctx->framesize); + sr_dbg("hantek-dso: got %d-%d/%d samples in frame", devc->samp_received + 1, + devc->samp_received + num_samples, devc->framesize); /* The device always sends a full frame, but the beginning of the frame * doesn't represent the trigger point. The offset at which the trigger @@ -637,63 +657,63 @@ static void receive_transfer(struct libusb_transfer *transfer) * that trigger point came after the end of the device's frame buffer was * reached, and it wrapped around to overwrite up until the trigger point. */ - if (ctx->samp_received < ctx->trigger_offset) { + if (devc->samp_received < devc->trigger_offset) { /* Trigger point not yet reached. */ - if (ctx->samp_received + num_samples < ctx->trigger_offset) { + if (devc->samp_received + num_samples < devc->trigger_offset) { /* The entire chunk is before the trigger point. */ - memcpy(ctx->framebuf + ctx->samp_buffered * 2, + memcpy(devc->framebuf + devc->samp_buffered * 2, transfer->buffer, num_samples * 2); - ctx->samp_buffered += num_samples; + devc->samp_buffered += num_samples; } else { /* This chunk hits or overruns the trigger point. * Store the part before the trigger fired, and * send the rest up to the session bus. */ - pre = ctx->trigger_offset - ctx->samp_received; - memcpy(ctx->framebuf + ctx->samp_buffered * 2, + pre = devc->trigger_offset - devc->samp_received; + memcpy(devc->framebuf + devc->samp_buffered * 2, transfer->buffer, pre * 2); - ctx->samp_buffered += pre; + devc->samp_buffered += pre; /* The rest of this chunk starts with the trigger point. */ sr_dbg("hantek-dso: reached trigger point, %d samples buffered", - ctx->samp_buffered); + devc->samp_buffered); /* Avoid the corner case where the chunk ended at * exactly the trigger point. */ if (num_samples > pre) - send_chunk(ctx, transfer->buffer + pre * 2, + send_chunk(devc, transfer->buffer + pre * 2, num_samples - pre); } } else { /* Already past the trigger point, just send it all out. */ - send_chunk(ctx, transfer->buffer, + send_chunk(devc, transfer->buffer, num_samples); } - ctx->samp_received += num_samples; + devc->samp_received += num_samples; /* Everything in this transfer was either copied to the buffer or * sent to the session bus. */ g_free(transfer->buffer); libusb_free_transfer(transfer); - if (ctx->samp_received >= ctx->framesize) { + if (devc->samp_received >= devc->framesize) { /* That was the last chunk in this frame. Send the buffered * pre-trigger samples out now, in one big chunk. */ sr_dbg("hantek-dso: end of frame, sending %d pre-trigger buffered samples", - ctx->samp_buffered); - send_chunk(ctx, ctx->framebuf, ctx->samp_buffered); + devc->samp_buffered); + send_chunk(devc, devc->framebuf, devc->samp_buffered); /* Mark the end of this frame. */ packet.type = SR_DF_FRAME_END; - sr_session_send(ctx->cb_data, &packet); + sr_session_send(devc->cb_data, &packet); - if (ctx->limit_frames && ++ctx->num_frames == ctx->limit_frames) { + if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) { /* Terminate session */ /* TODO: don't leave pending USB transfers hanging */ packet.type = SR_DF_END; sr_session_send(ctx->cb_data, &packet); } else { - ctx->dev_state = NEW_CAPTURE; + devc->dev_state = NEW_CAPTURE; } } @@ -703,8 +723,9 @@ static int handle_event(int fd, int revents, void *cb_data) { struct sr_datafeed_packet packet; struct timeval tv; - struct context *ctx; int num_probes; + struct drv_context *drvc; + struct dev_context *devc; uint32_t trigger_offset; uint8_t capturestate; @@ -712,40 +733,43 @@ static int handle_event(int fd, int revents, void *cb_data) (void)fd; (void)revents; + drvc = hdi->priv; + sdi = cb_data; + devc = sdi->priv; /* Always handle pending libusb events. */ tv.tv_sec = tv.tv_usec = 0; - libusb_handle_events_timeout(usb_context, &tv); + libusb_handle_events_timeout(drvc->usb_context, &tv); ctx = cb_data; /* TODO: ugh */ - if (ctx->dev_state == NEW_CAPTURE) { - if (dso_capture_start(ctx) != SR_OK) + if (devc->dev_state == NEW_CAPTURE) { + if (dso_capture_start(devc) != SR_OK) return TRUE; - if (dso_enable_trigger(ctx) != SR_OK) + if (dso_enable_trigger(devc) != SR_OK) return TRUE; -// if (dso_force_trigger(ctx) != SR_OK) +// if (dso_force_trigger(devc) != SR_OK) // return TRUE; sr_dbg("hantek-dso: successfully requested next chunk"); - ctx->dev_state = CAPTURE; + devc->dev_state = CAPTURE; return TRUE; } - if (ctx->dev_state != CAPTURE) + if (devc->dev_state != CAPTURE) return TRUE; - if ((dso_get_capturestate(ctx, &capturestate, &trigger_offset)) != SR_OK) + if ((dso_get_capturestate(devc, &capturestate, &trigger_offset)) != SR_OK) return TRUE; sr_dbg("hantek-dso: capturestate %d", capturestate); sr_dbg("hantek-dso: trigger offset 0x%.6x", trigger_offset); switch (capturestate) { case CAPTURE_EMPTY: - if (++ctx->capture_empty_count >= MAX_CAPTURE_EMPTY) { - ctx->capture_empty_count = 0; - if (dso_capture_start(ctx) != SR_OK) + if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) { + devc->capture_empty_count = 0; + if (dso_capture_start(devc) != SR_OK) break; - if (dso_enable_trigger(ctx) != SR_OK) + if (dso_enable_trigger(devc) != SR_OK) break; -// if (dso_force_trigger(ctx) != SR_OK) +// if (dso_force_trigger(devc) != SR_OK) // break; sr_dbg("hantek-dso: successfully requested next chunk"); } @@ -755,24 +779,24 @@ static int handle_event(int fd, int revents, void *cb_data) break; case CAPTURE_READY_8BIT: /* Remember where in the captured frame the trigger is. */ - ctx->trigger_offset = trigger_offset; + devc->trigger_offset = trigger_offset; - num_probes = (ctx->ch1_enabled && ctx->ch2_enabled) ? 2 : 1; - ctx->framebuf = g_try_malloc(ctx->framesize * num_probes * 2); - ctx->samp_buffered = ctx->samp_received = 0; + num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1; + devc->framebuf = g_try_malloc(devc->framesize * num_probes * 2); + devc->samp_buffered = devc->samp_received = 0; /* Tell the scope to send us the first frame. */ - if (dso_get_channeldata(ctx, receive_transfer) != SR_OK) + if (dso_get_channeldata(devc, receive_transfer) != SR_OK) break; /* Don't hit the state machine again until we're done fetching * the data we just told the scope to send. */ - ctx->dev_state = FETCH_DATA; + devc->dev_state = FETCH_DATA; /* Tell the frontend a new frame is on the way. */ packet.type = SR_DF_FRAME_BEGIN; - sr_session_send(cb_data, &packet); + sr_session_send(sdi, &packet); break; case CAPTURE_READY_9BIT: /* TODO */ @@ -795,23 +819,25 @@ static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, struct sr_datafeed_packet packet; struct sr_datafeed_header header; struct sr_datafeed_meta_analog meta; - struct context *ctx; + struct drv_context *drvc; + struct dev_context *devc; int i; + drvc = hdi->priv; if (sdi->status != SR_ST_ACTIVE) return SR_ERR; - ctx = sdi->priv; - ctx->cb_data = cb_data; + devc = sdi->priv; + devc->cb_data = cb_data; - if (dso_init(ctx) != SR_OK) + if (dso_init(devc) != SR_OK) return SR_ERR; - if (dso_capture_start(ctx) != SR_OK) + if (dso_capture_start(devc) != SR_OK) return SR_ERR; - ctx->dev_state = CAPTURE; - lupfd = libusb_get_pollfds(usb_context); + devc->dev_state = CAPTURE; + lupfd = libusb_get_pollfds(drvc->usb_context); for (i = 0; lupfd[i]; i++) sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK, handle_event, ctx); @@ -839,8 +865,9 @@ static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi, void *cb_data) { - struct sr_datafeed_packet packet; - struct context *ctx; + struct dev_context *devc; + + (void)cb_data; if (sdi->status != SR_ST_ACTIVE) return SR_ERR; @@ -867,5 +894,5 @@ SR_PRIV struct sr_dev_driver hantek_dso_driver_info = { .dev_config_set = hw_dev_config_set, .dev_acquisition_start = hw_dev_acquisition_start, .dev_acquisition_stop = hw_dev_acquisition_stop, - .instances = NULL, + .priv = NULL, }; diff --git a/hardware/hantek-dso/dso.c b/hardware/hantek-dso/dso.c index 98a326c0..1d8e60b3 100644 --- a/hardware/hantek-dso/dso.c +++ b/hardware/hantek-dso/dso.c @@ -27,11 +27,11 @@ #include #include -extern libusb_context *usb_context; extern struct sr_dev_driver hantek_dso_driver_info; +static struct sr_dev_driver *hdi = &hantek_dso_driver_info; -static int send_begin(struct context *ctx) +static int send_begin(struct dev_context *devc) { int ret; unsigned char buffer[] = {0x0f, 0x03, 0x03, 0x03, 0x68, 0xac, 0xfe, @@ -39,7 +39,7 @@ static int send_begin(struct context *ctx) sr_dbg("hantek-dso: sending CTRL_BEGINCOMMAND"); - if ((ret = libusb_control_transfer(ctx->usb->devhdl, + if ((ret = libusb_control_transfer(devc->usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR, CTRL_BEGINCOMMAND, 0, 0, buffer, sizeof(buffer), 200)) != sizeof(buffer)) { sr_err("failed to send begincommand: %d", ret); @@ -49,14 +49,14 @@ static int send_begin(struct context *ctx) return SR_OK; } -static int send_bulkcmd(struct context *ctx, uint8_t *cmdstring, int cmdlen) +static int send_bulkcmd(struct dev_context *devc, uint8_t *cmdstring, int cmdlen) { int ret, tmp; - if (send_begin(ctx) != SR_OK) + if (send_begin(devc) != SR_OK) return SR_ERR; - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, + if ((ret = libusb_bulk_transfer(devc->usb->devhdl, DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, cmdstring, cmdlen, &tmp, 200)) != 0) return SR_ERR; @@ -108,25 +108,27 @@ SR_PRIV int dso_open(struct sr_dev_inst *sdi) { libusb_device **devlist; struct libusb_device_descriptor des; - struct context *ctx; + struct drv_context *drvc; + struct dev_context *devc; int err, skip, i; - ctx = sdi->priv; + drvc = hdi->priv; + devc = sdi->priv; if (sdi->status == SR_ST_ACTIVE) /* already in use */ return SR_ERR; skip = 0; - libusb_get_device_list(usb_context, &devlist); + libusb_get_device_list(drvc->usb_context, &devlist); for (i = 0; devlist[i]; i++) { if ((err = libusb_get_device_descriptor(devlist[i], &des))) { sr_err("hantek-dso: failed to get device descriptor: %d", err); continue; } - if (des.idVendor != ctx->profile->fw_vid - || des.idProduct != ctx->profile->fw_pid) + if (des.idVendor != devc->profile->fw_vid + || des.idProduct != devc->profile->fw_pid) continue; if (sdi->status == SR_ST_INITIALIZING) { @@ -140,27 +142,27 @@ SR_PRIV int dso_open(struct sr_dev_inst *sdi) * This device is fully enumerated, so we need to find * this device by vendor, product, bus and address. */ - if (libusb_get_bus_number(devlist[i]) != ctx->usb->bus - || libusb_get_device_address(devlist[i]) != ctx->usb->address) + if (libusb_get_bus_number(devlist[i]) != devc->usb->bus + || libusb_get_device_address(devlist[i]) != devc->usb->address) /* this is not the one */ continue; } - if (!(err = libusb_open(devlist[i], &ctx->usb->devhdl))) { - if (ctx->usb->address == 0xff) + if (!(err = libusb_open(devlist[i], &devc->usb->devhdl))) { + if (devc->usb->address == 0xff) /* * first time we touch this device after firmware upload, * so we don't know the address yet. */ - ctx->usb->address = libusb_get_device_address(devlist[i]); + devc->usb->address = libusb_get_device_address(devlist[i]); - if(!(ctx->epin_maxpacketsize = dso_getmps(devlist[i]))) + if(!(devc->epin_maxpacketsize = dso_getmps(devlist[i]))) sr_err("hantek-dso: wrong endpoint profile"); else { sdi->status = SR_ST_ACTIVE; sr_info("hantek-dso: opened device %d on %d.%d interface %d", - sdi->index, ctx->usb->bus, - ctx->usb->address, USB_INTERFACE); + sdi->index, devc->usb->bus, + devc->usb->address, USB_INTERFACE); } } else { sr_err("hantek-dso: failed to open device: %d", err); @@ -179,35 +181,35 @@ SR_PRIV int dso_open(struct sr_dev_inst *sdi) SR_PRIV void dso_close(struct sr_dev_inst *sdi) { - struct context *ctx; + struct dev_context *devc; - ctx = sdi->priv; + devc = sdi->priv; - if (ctx->usb->devhdl == NULL) + if (devc->usb->devhdl == NULL) return; sr_info("hantek-dso: closing device %d on %d.%d interface %d", sdi->index, - ctx->usb->bus, ctx->usb->address, USB_INTERFACE); - libusb_release_interface(ctx->usb->devhdl, USB_INTERFACE); - libusb_close(ctx->usb->devhdl); - ctx->usb->devhdl = NULL; + devc->usb->bus, devc->usb->address, USB_INTERFACE); + libusb_release_interface(devc->usb->devhdl, USB_INTERFACE); + libusb_close(devc->usb->devhdl); + devc->usb->devhdl = NULL; sdi->status = SR_ST_INACTIVE; } -static int get_channel_offsets(struct context *ctx) +static int get_channel_offsets(struct dev_context *devc) { GString *gs; int chan, v, ret; sr_dbg("hantek-dso: getting channel offsets"); - ret = libusb_control_transfer(ctx->usb->devhdl, + ret = libusb_control_transfer(devc->usb->devhdl, LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_READ_EEPROM, EEPROM_CHANNEL_OFFSETS, 0, - (unsigned char *)&ctx->channel_levels, - sizeof(ctx->channel_levels), 200); - if (ret != sizeof(ctx->channel_levels)) { + (unsigned char *)&devc->channel_levels, + sizeof(devc->channel_levels), 200); + if (ret != sizeof(devc->channel_levels)) { sr_err("failed to get channel offsets: %d", ret); return SR_ERR; } @@ -219,8 +221,8 @@ static int get_channel_offsets(struct context *ctx) */ for (chan = 0; chan < 2; chan++) { for (v = 0; v < 9; v++) { - ctx->channel_levels[chan][v][0] = g_ntohs(ctx->channel_levels[chan][v][0]); - ctx->channel_levels[chan][v][1] = g_ntohs(ctx->channel_levels[chan][v][1]); + devc->channel_levels[chan][v][0] = g_ntohs(devc->channel_levels[chan][v][0]); + devc->channel_levels[chan][v][1] = g_ntohs(devc->channel_levels[chan][v][1]); } } @@ -230,8 +232,8 @@ static int get_channel_offsets(struct context *ctx) g_string_printf(gs, "hantek-dso: CH%d:", chan + 1); for (v = 0; v < 9; v++) { g_string_append_printf(gs, " %.4x-%.4x", - ctx->channel_levels[chan][v][0], - ctx->channel_levels[chan][v][1]); + devc->channel_levels[chan][v][0], + devc->channel_levels[chan][v][1]); } sr_dbg(gs->str); } @@ -241,7 +243,7 @@ static int get_channel_offsets(struct context *ctx) return SR_OK; } -SR_PRIV int dso_set_trigger_samplerate(struct context *ctx) +SR_PRIV int dso_set_trigger_samplerate(struct dev_context *devc) { int ret, tmp; uint8_t cmdstring[12]; @@ -257,95 +259,95 @@ SR_PRIV int dso_set_trigger_samplerate(struct context *ctx) cmdstring[0] = CMD_SET_TRIGGER_SAMPLERATE; /* Trigger source */ - sr_dbg("hantek-dso: trigger source %s", ctx->triggersource); - if (!strcmp("CH2", ctx->triggersource)) + sr_dbg("hantek-dso: trigger source %s", devc->triggersource); + if (!strcmp("CH2", devc->triggersource)) tmp = 0; - else if (!strcmp("CH1", ctx->triggersource)) + else if (!strcmp("CH1", devc->triggersource)) tmp = 1; - else if (!strcmp("EXT", ctx->triggersource)) + else if (!strcmp("EXT", devc->triggersource)) tmp = 2; else { - sr_err("hantek-dso: invalid trigger source %s", ctx->triggersource); + sr_err("hantek-dso: invalid trigger source %s", devc->triggersource); return SR_ERR_ARG; } cmdstring[2] = tmp; /* Frame size */ - sr_dbg("hantek-dso: frame size %d", ctx->framesize); - cmdstring[2] |= (ctx->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 2; + sr_dbg("hantek-dso: frame size %d", devc->framesize); + cmdstring[2] |= (devc->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 2; /* Timebase fast */ - sr_dbg("hantek-dso: time base index %d", ctx->timebase); - switch (ctx->framesize) { + sr_dbg("hantek-dso: time base index %d", devc->timebase); + switch (devc->framesize) { case FRAMESIZE_SMALL: - if (ctx->timebase < TIME_20us) + if (devc->timebase < TIME_20us) tmp = 0; - else if (ctx->timebase == TIME_20us) + else if (devc->timebase == TIME_20us) tmp = 1; - else if (ctx->timebase == TIME_40us) + else if (devc->timebase == TIME_40us) tmp = 2; - else if (ctx->timebase == TIME_100us) + else if (devc->timebase == TIME_100us) tmp = 3; - else if (ctx->timebase >= TIME_200us) + else if (devc->timebase >= TIME_200us) tmp = 4; break; case FRAMESIZE_LARGE: - if (ctx->timebase < TIME_40us) { + if (devc->timebase < TIME_40us) { sr_err("hantek-dso: timebase < 40us only supported with 10K buffer"); return SR_ERR_ARG; } - else if (ctx->timebase == TIME_40us) + else if (devc->timebase == TIME_40us) tmp = 0; - else if (ctx->timebase == TIME_100us) + else if (devc->timebase == TIME_100us) tmp = 2; - else if (ctx->timebase == TIME_200us) + else if (devc->timebase == TIME_200us) tmp = 3; - else if (ctx->timebase >= TIME_400us) + else if (devc->timebase >= TIME_400us) tmp = 4; break; } cmdstring[2] |= (tmp & 0x07) << 5; /* Enabled channels: 00=CH1 01=CH2 10=both */ - sr_dbg("hantek-dso: channels CH1=%d CH2=%d", ctx->ch1_enabled, ctx->ch2_enabled); - tmp = (((ctx->ch2_enabled ? 1 : 0) << 1) + (ctx->ch1_enabled ? 1 : 0)) - 1; + sr_dbg("hantek-dso: channels CH1=%d CH2=%d", devc->ch1_enabled, devc->ch2_enabled); + tmp = (((devc->ch2_enabled ? 1 : 0) << 1) + (devc->ch1_enabled ? 1 : 0)) - 1; cmdstring[3] = tmp; /* Fast rates channel */ /* TODO: is this right? */ - tmp = ctx->timebase < TIME_10us ? 1 : 0; + tmp = devc->timebase < TIME_10us ? 1 : 0; cmdstring[3] |= tmp << 2; /* Trigger slope: 0=positive 1=negative */ /* TODO: does this work? */ - sr_dbg("hantek-dso: trigger slope %d", ctx->triggerslope); - cmdstring[3] |= (ctx->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3; + sr_dbg("hantek-dso: trigger slope %d", devc->triggerslope); + cmdstring[3] |= (devc->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3; /* Timebase slow */ - if (ctx->timebase < TIME_100us) + if (devc->timebase < TIME_100us) tmp = 0; - else if (ctx->timebase > TIME_400ms) + else if (devc->timebase > TIME_400ms) tmp = 0xffed; else { - if (ctx->framesize == FRAMESIZE_SMALL) - tmp = timebase_small[ctx->timebase - 3]; + if (devc->framesize == FRAMESIZE_SMALL) + tmp = timebase_small[devc->timebase - 3]; else - tmp = timebase_large[ctx->timebase - 3]; + tmp = timebase_large[devc->timebase - 3]; } cmdstring[4] = tmp & 0xff; cmdstring[5] = (tmp >> 8) & 0xff; /* Horizontal trigger position */ - sr_dbg("hantek-dso: trigger position %3.2f", ctx->triggerposition); - tmp = 0x77fff + 0x8000 * ctx->triggerposition; + sr_dbg("hantek-dso: trigger position %3.2f", devc->triggerposition); + tmp = 0x77fff + 0x8000 * devc->triggerposition; cmdstring[6] = tmp & 0xff; cmdstring[7] = (tmp >> 8) & 0xff; cmdstring[10] = (tmp >> 16) & 0xff; - if (send_begin(ctx) != SR_OK) + if (send_begin(devc) != SR_OK) return SR_ERR; - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, + if ((ret = libusb_bulk_transfer(devc->usb->devhdl, DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { @@ -357,7 +359,7 @@ SR_PRIV int dso_set_trigger_samplerate(struct context *ctx) return SR_OK; } -SR_PRIV int dso_set_filters(struct context *ctx) +SR_PRIV int dso_set_filters(struct dev_context *devc) { int ret, tmp; uint8_t cmdstring[8]; @@ -367,24 +369,24 @@ SR_PRIV int dso_set_filters(struct context *ctx) memset(cmdstring, 0, sizeof(cmdstring)); cmdstring[0] = CMD_SET_FILTERS; cmdstring[1] = 0x0f; - if (ctx->filter_ch1) { + if (devc->filter_ch1) { sr_dbg("hantek-dso: turning on CH1 filter"); cmdstring[2] |= 0x80; } - if (ctx->filter_ch2) { + if (devc->filter_ch2) { sr_dbg("hantek-dso: turning on CH2 filter"); cmdstring[2] |= 0x40; } - if (ctx->filter_trigger) { + if (devc->filter_trigger) { /* TODO: supported on the DSO-2090? */ sr_dbg("hantek-dso: turning on trigger filter"); cmdstring[2] |= 0x20; } - if (send_begin(ctx) != SR_OK) + if (send_begin(devc) != SR_OK) return SR_ERR; - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, + if ((ret = libusb_bulk_transfer(devc->usb->devhdl, DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { @@ -396,7 +398,7 @@ SR_PRIV int dso_set_filters(struct context *ctx) return SR_OK; } -SR_PRIV int dso_set_voltage(struct context *ctx) +SR_PRIV int dso_set_voltage(struct dev_context *devc) { int ret, tmp; uint8_t cmdstring[8]; @@ -409,8 +411,8 @@ SR_PRIV int dso_set_voltage(struct context *ctx) cmdstring[2] = 0x30; /* CH1 volts/div is encoded in bits 0-1 */ - sr_dbg("hantek-dso: CH1 vdiv index %d", ctx->voltage_ch1); - switch (ctx->voltage_ch1) { + sr_dbg("hantek-dso: CH1 vdiv index %d", devc->voltage_ch1); + switch (devc->voltage_ch1) { case VDIV_1V: case VDIV_100MV: case VDIV_10MV: @@ -429,8 +431,8 @@ SR_PRIV int dso_set_voltage(struct context *ctx) } /* CH2 volts/div is encoded in bits 2-3 */ - sr_dbg("hantek-dso: CH2 vdiv index %d", ctx->voltage_ch2); - switch (ctx->voltage_ch2) { + sr_dbg("hantek-dso: CH2 vdiv index %d", devc->voltage_ch2); + switch (devc->voltage_ch2) { case VDIV_1V: case VDIV_100MV: case VDIV_10MV: @@ -448,10 +450,10 @@ SR_PRIV int dso_set_voltage(struct context *ctx) break; } - if (send_begin(ctx) != SR_OK) + if (send_begin(devc) != SR_OK) return SR_ERR; - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, + if ((ret = libusb_bulk_transfer(devc->usb->devhdl, DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { @@ -463,7 +465,7 @@ SR_PRIV int dso_set_voltage(struct context *ctx) return SR_OK; } -SR_PRIV int dso_set_relays(struct context *ctx) +SR_PRIV int dso_set_relays(struct dev_context *devc) { GString *gs; int ret, i; @@ -472,27 +474,27 @@ SR_PRIV int dso_set_relays(struct context *ctx) sr_dbg("hantek-dso: preparing CTRL_SETRELAYS"); - if (ctx->voltage_ch1 < VDIV_1V) + if (devc->voltage_ch1 < VDIV_1V) relays[1] = ~relays[1]; - if (ctx->voltage_ch1 < VDIV_100MV) + if (devc->voltage_ch1 < VDIV_100MV) relays[2] = ~relays[2]; - sr_dbg("hantek-dso: CH1 coupling %d", ctx->coupling_ch1); - if (ctx->coupling_ch1 != COUPLING_AC) + sr_dbg("hantek-dso: CH1 coupling %d", devc->coupling_ch1); + if (devc->coupling_ch1 != COUPLING_AC) relays[3] = ~relays[3]; - if (ctx->voltage_ch2 < VDIV_1V) + if (devc->voltage_ch2 < VDIV_1V) relays[4] = ~relays[4]; - if (ctx->voltage_ch2 < VDIV_100MV) + if (devc->voltage_ch2 < VDIV_100MV) relays[5] = ~relays[5]; - sr_dbg("hantek-dso: CH2 coupling %d", ctx->coupling_ch1); - if (ctx->coupling_ch2 != COUPLING_AC) + sr_dbg("hantek-dso: CH2 coupling %d", devc->coupling_ch1); + if (devc->coupling_ch2 != COUPLING_AC) relays[6] = ~relays[6]; - if (!strcmp(ctx->triggersource, "EXT")) + if (!strcmp(devc->triggersource, "EXT")) relays[7] = ~relays[7]; if (sr_log_loglevel_get() >= SR_LOG_DBG) { @@ -504,7 +506,7 @@ SR_PRIV int dso_set_relays(struct context *ctx) g_string_free(gs, TRUE); } - if ((ret = libusb_control_transfer(ctx->usb->devhdl, + if ((ret = libusb_control_transfer(devc->usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETRELAYS, 0, 0, relays, 17, 100)) != sizeof(relays)) { sr_err("failed to set relays: %d", ret); @@ -515,7 +517,7 @@ SR_PRIV int dso_set_relays(struct context *ctx) return SR_OK; } -SR_PRIV int dso_set_voffsets(struct context *ctx) +SR_PRIV int dso_set_voffsets(struct dev_context *devc) { int offset, ret; uint16_t *ch_levels; @@ -525,29 +527,29 @@ SR_PRIV int dso_set_voffsets(struct context *ctx) memset(offsets, 0, sizeof(offsets)); /* Channel 1 */ - ch_levels = ctx->channel_levels[0][ctx->voltage_ch1]; - offset = (ch_levels[1] - ch_levels[0]) * ctx->voffset_ch1 + ch_levels[0]; + ch_levels = devc->channel_levels[0][devc->voltage_ch1]; + offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch1 + ch_levels[0]; offsets[0] = (offset >> 8) | 0x20; offsets[1] = offset & 0xff; - sr_dbg("hantek-dso: CH1 offset %3.2f (%.2x%.2x)", ctx->voffset_ch1, + sr_dbg("hantek-dso: CH1 offset %3.2f (%.2x%.2x)", devc->voffset_ch1, offsets[0], offsets[1]); /* Channel 2 */ - ch_levels = ctx->channel_levels[1][ctx->voltage_ch2]; - offset = (ch_levels[1] - ch_levels[0]) * ctx->voffset_ch2 + ch_levels[0]; + ch_levels = devc->channel_levels[1][devc->voltage_ch2]; + offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch2 + ch_levels[0]; offsets[2] = (offset >> 8) | 0x20; offsets[3] = offset & 0xff; - sr_dbg("hantek-dso: CH2 offset %3.2f (%.2x%.2x)", ctx->voffset_ch2, + sr_dbg("hantek-dso: CH2 offset %3.2f (%.2x%.2x)", devc->voffset_ch2, offsets[2], offsets[3]); /* Trigger */ - offset = MAX_VERT_TRIGGER * ctx->voffset_trigger; + offset = MAX_VERT_TRIGGER * devc->voffset_trigger; offsets[4] = (offset >> 8) | 0x20; offsets[5] = offset & 0xff; - sr_dbg("hantek-dso: trigger offset %3.2f (%.2x%.2x)", ctx->voffset_trigger, + sr_dbg("hantek-dso: trigger offset %3.2f (%.2x%.2x)", devc->voffset_trigger, offsets[4], offsets[5]); - if ((ret = libusb_control_transfer(ctx->usb->devhdl, + if ((ret = libusb_control_transfer(devc->usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETOFFSET, 0, 0, offsets, sizeof(offsets), 100)) != sizeof(offsets)) { sr_err("failed to set offsets: %d", ret); @@ -558,7 +560,7 @@ SR_PRIV int dso_set_voffsets(struct context *ctx) return SR_OK; } -SR_PRIV int dso_enable_trigger(struct context *ctx) +SR_PRIV int dso_enable_trigger(struct dev_context *devc) { int ret, tmp; uint8_t cmdstring[2]; @@ -569,10 +571,10 @@ SR_PRIV int dso_enable_trigger(struct context *ctx) cmdstring[0] = CMD_ENABLE_TRIGGER; cmdstring[1] = 0x00; - if (send_begin(ctx) != SR_OK) + if (send_begin(devc) != SR_OK) return SR_ERR; - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, + if ((ret = libusb_bulk_transfer(devc->usb->devhdl, DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { @@ -583,7 +585,7 @@ SR_PRIV int dso_enable_trigger(struct context *ctx) return SR_OK; } -SR_PRIV int dso_force_trigger(struct context *ctx) +SR_PRIV int dso_force_trigger(struct dev_context *devc) { int ret, tmp; uint8_t cmdstring[2]; @@ -594,10 +596,10 @@ SR_PRIV int dso_force_trigger(struct context *ctx) cmdstring[0] = CMD_FORCE_TRIGGER; cmdstring[1] = 0x00; - if (send_begin(ctx) != SR_OK) + if (send_begin(devc) != SR_OK) return SR_ERR; - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, + if ((ret = libusb_bulk_transfer(devc->usb->devhdl, DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { @@ -608,36 +610,36 @@ SR_PRIV int dso_force_trigger(struct context *ctx) return SR_OK; } -SR_PRIV int dso_init(struct context *ctx) +SR_PRIV int dso_init(struct dev_context *devc) { sr_dbg("hantek-dso: initializing dso"); - if (get_channel_offsets(ctx) != SR_OK) + if (get_channel_offsets(devc) != SR_OK) return SR_ERR; - if (dso_set_trigger_samplerate(ctx) != SR_OK) + if (dso_set_trigger_samplerate(devc) != SR_OK) return SR_ERR; - if (dso_set_filters(ctx) != SR_OK) + if (dso_set_filters(devc) != SR_OK) return SR_ERR; - if (dso_set_voltage(ctx) != SR_OK) + if (dso_set_voltage(devc) != SR_OK) return SR_ERR; - if (dso_set_relays(ctx) != SR_OK) + if (dso_set_relays(devc) != SR_OK) return SR_ERR; - if (dso_set_voffsets(ctx) != SR_OK) + if (dso_set_voffsets(devc) != SR_OK) return SR_ERR; - if (dso_enable_trigger(ctx) != SR_OK) + if (dso_enable_trigger(devc) != SR_OK) return SR_ERR; return SR_OK; } -SR_PRIV int dso_get_capturestate(struct context *ctx, uint8_t *capturestate, +SR_PRIV int dso_get_capturestate(struct dev_context *devc, uint8_t *capturestate, uint32_t *trigger_offset) { int ret, tmp, i; @@ -649,12 +651,12 @@ SR_PRIV int dso_get_capturestate(struct context *ctx, uint8_t *capturestate, cmdstring[0] = CMD_GET_CAPTURESTATE; cmdstring[1] = 0; - if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) { + if ((ret = send_bulkcmd(devc, cmdstring, sizeof(cmdstring))) != SR_OK) { sr_dbg("Failed to send get_capturestate command: %d", ret); return SR_ERR; } - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, + if ((ret = libusb_bulk_transfer(devc->usb->devhdl, DSO_EP_IN | LIBUSB_ENDPOINT_IN, inbuf, 512, &tmp, 100)) != 0) { sr_dbg("Failed to get capturestate: %d", ret); @@ -679,7 +681,7 @@ SR_PRIV int dso_get_capturestate(struct context *ctx, uint8_t *capturestate, return SR_OK; } -SR_PRIV int dso_capture_start(struct context *ctx) +SR_PRIV int dso_capture_start(struct dev_context *devc) { int ret; uint8_t cmdstring[2]; @@ -689,7 +691,7 @@ SR_PRIV int dso_capture_start(struct context *ctx) cmdstring[0] = CMD_CAPTURE_START; cmdstring[1] = 0; - if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) { + if ((ret = send_bulkcmd(devc, cmdstring, sizeof(cmdstring))) != SR_OK) { sr_err("Failed to send capture_start command: %d", ret); return SR_ERR; } @@ -697,7 +699,7 @@ SR_PRIV int dso_capture_start(struct context *ctx) return SR_OK; } -SR_PRIV int dso_get_channeldata(struct context *ctx, libusb_transfer_cb_fn cb) +SR_PRIV int dso_get_channeldata(struct dev_context *devc, libusb_transfer_cb_fn cb) { struct libusb_transfer *transfer; int num_transfers, ret, i; @@ -709,23 +711,23 @@ SR_PRIV int dso_get_channeldata(struct context *ctx, libusb_transfer_cb_fn cb) cmdstring[0] = CMD_GET_CHANNELDATA; cmdstring[1] = 0; - if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) { + if ((ret = send_bulkcmd(devc, cmdstring, sizeof(cmdstring))) != SR_OK) { sr_err("Failed to get channel data: %d", ret); return SR_ERR; } /* TODO: dso-2xxx only */ - num_transfers = ctx->framesize * sizeof(unsigned short) / ctx->epin_maxpacketsize; + num_transfers = devc->framesize * sizeof(unsigned short) / devc->epin_maxpacketsize; sr_dbg("hantek-dso: queueing up %d transfers", num_transfers); for (i = 0; i < num_transfers; i++) { - if (!(buf = g_try_malloc(ctx->epin_maxpacketsize))) { + if (!(buf = g_try_malloc(devc->epin_maxpacketsize))) { sr_err("hantek-dso: %s: buf malloc failed", __func__); return SR_ERR_MALLOC; } transfer = libusb_alloc_transfer(0); - libusb_fill_bulk_transfer(transfer, ctx->usb->devhdl, + libusb_fill_bulk_transfer(transfer, devc->usb->devhdl, DSO_EP_IN | LIBUSB_ENDPOINT_IN, buf, - ctx->epin_maxpacketsize, cb, ctx, 40); + devc->epin_maxpacketsize, cb, devc, 40); if ((ret = libusb_submit_transfer(transfer)) != 0) { sr_err("failed to submit transfer: %d", ret); /* TODO: Free them all. */ diff --git a/hardware/hantek-dso/dso.h b/hardware/hantek-dso/dso.h index 38ef61bf..6d8f8821 100644 --- a/hardware/hantek-dso/dso.h +++ b/hardware/hantek-dso/dso.h @@ -158,7 +158,12 @@ struct dso_profile { char *firmware; }; -struct context { +struct drv_context { + libusb_context *usb_context; + GSList *instances; +}; + +struct dev_context { const struct dso_profile *profile; struct sr_usb_dev_inst *usb; void *cb_data; @@ -205,12 +210,12 @@ struct context { SR_PRIV int dso_open(struct sr_dev_inst *sdi); SR_PRIV void dso_close(struct sr_dev_inst *sdi); -SR_PRIV int dso_enable_trigger(struct context *ctx); -SR_PRIV int dso_force_trigger(struct context *ctx); -SR_PRIV int dso_init(struct context *ctx); -SR_PRIV int dso_get_capturestate(struct context *ctx, uint8_t *capturestate, +SR_PRIV int dso_enable_trigger(struct dev_context *devc); +SR_PRIV int dso_force_trigger(struct dev_context *devc); +SR_PRIV int dso_init(struct dev_context *devc); +SR_PRIV int dso_get_capturestate(struct dev_context *devc, uint8_t *capturestate, uint32_t *trigger_offset); -SR_PRIV int dso_capture_start(struct context *ctx); -SR_PRIV int dso_get_channeldata(struct context *ctx, libusb_transfer_cb_fn cb); +SR_PRIV int dso_capture_start(struct dev_context *devc); +SR_PRIV int dso_get_channeldata(struct dev_context *devc, libusb_transfer_cb_fn cb); #endif