X-Git-Url: https://sigrok.org/gitweb/?p=libsigrok.git;a=blobdiff_plain;f=hardware%2Fhantek-dso%2Fdso.c;h=da5eb121b3a04ff1fab70c6bfa5358dc9ddb9959;hp=552ee17b050d8ed42a582f0ea8b5296df9b0b639;hb=43cd4637285833706f8a404ca027bcf0ee75b9ae;hpb=bc79e906a0911b4218b42b63b2f27fb0016c59da diff --git a/hardware/hantek-dso/dso.c b/hardware/hantek-dso/dso.c index 552ee17b..da5eb121 100644 --- a/hardware/hantek-dso/dso.c +++ b/hardware/hantek-dso/dso.c @@ -1,5 +1,5 @@ /* - * This file is part of the sigrok project. + * This file is part of the libsigrok project. * * Copyright (C) 2012 Bert Vermeulen * With protocol information from the hantekdso project, @@ -19,52 +19,54 @@ * along with this program. If not, see . */ -#include "sigrok.h" -#include "sigrok-internal.h" -#include "config.h" +#include "libsigrok.h" +#include "libsigrok-internal.h" #include "dso.h" #include #include #include -extern libusb_context *usb_context; -extern GSList *dev_insts; +extern struct sr_dev_driver hantek_dso_driver_info; - -static int send_begin(struct context *ctx) +static int send_begin(const struct sr_dev_inst *sdi) { + struct sr_usb_dev_inst *usb; int ret; unsigned char buffer[] = {0x0f, 0x03, 0x03, 0x03, 0x68, 0xac, 0xfe, 0x00, 0x01, 0x00}; - sr_dbg("hantek-dso: sending CTRL_BEGINCOMMAND"); + sr_dbg("Sending CTRL_BEGINCOMMAND."); - if ((ret = libusb_control_transfer(ctx->usb->devhdl, + usb = sdi->conn; + if ((ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR, CTRL_BEGINCOMMAND, 0, 0, buffer, sizeof(buffer), 200)) != sizeof(buffer)) { - sr_err("failed to send begincommand: %d", ret); + sr_err("Failed to send begincommand: %s.", + libusb_error_name(ret)); return SR_ERR; } return SR_OK; } -static int send_bulkcmd(struct context *ctx, uint8_t *cmdstring, int cmdlen) +static int send_bulkcmd(const struct sr_dev_inst *sdi, uint8_t *cmdstring, int cmdlen) { + struct sr_usb_dev_inst *usb; int ret, tmp; - if (send_begin(ctx) != SR_OK) + usb = sdi->conn; + + if (send_begin(sdi) != SR_OK) return SR_ERR; - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, - DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, - cmdstring, cmdlen, &tmp, 200)) != 0) + if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, cmdstring, + cmdlen, &tmp, 200)) != 0) return SR_ERR; return SR_OK; } -SR_PRIV int dso_getmps(libusb_device *dev) +static int dso_getmps(libusb_device *dev) { struct libusb_device_descriptor des; struct libusb_config_descriptor *conf_dsc; @@ -104,36 +106,37 @@ err: return mps; } -SR_PRIV int dso_open(int dev_index) +SR_PRIV int dso_open(struct sr_dev_inst *sdi) { - libusb_device **devlist; + struct dev_context *devc; + struct drv_context *drvc = hantek_dso_driver_info.priv; + struct sr_usb_dev_inst *usb; struct libusb_device_descriptor des; - struct sr_dev_inst *sdi; - struct context *ctx; + libusb_device **devlist; int err, skip, i; - if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) - return SR_ERR_ARG; - ctx = sdi->priv; + devc = sdi->priv; + usb = sdi->conn; 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->sr_ctx->libusb_ctx, &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); + sr_err("Failed to get device descriptor: %s.", + libusb_error_name(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) { - if (skip != dev_index) { + if (skip != sdi->index) { /* Skip devices of this type that aren't the one we want. */ skip += 1; continue; @@ -143,33 +146,34 @@ SR_PRIV int dso_open(int dev_index) * 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]) != usb->bus + || libusb_get_device_address(devlist[i]) != 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], &usb->devhdl))) { + if (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]); + usb->address = libusb_get_device_address(devlist[i]); - if(!(ctx->epin_maxpacketsize = dso_getmps(devlist[i]))) - sr_err("hantek-dso: wrong endpoint profile"); + if (!(devc->epin_maxpacketsize = dso_getmps(devlist[i]))) + sr_err("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); + sr_info("Opened device %d on %d.%d interface %d.", + sdi->index, usb->bus, + usb->address, USB_INTERFACE); } } else { - sr_err("hantek-dso: failed to open device: %d", err); + sr_err("Failed to open device: %s.", + libusb_error_name(err)); } - /* if we made it here, we handled the device one way or another */ + /* If we made it here, we handled the device (somehow). */ break; } libusb_free_device_list(devlist, 1); @@ -182,437 +186,596 @@ SR_PRIV int dso_open(int dev_index) SR_PRIV void dso_close(struct sr_dev_inst *sdi) { - struct context *ctx; + struct sr_usb_dev_inst *usb; - ctx = sdi->priv; + usb = sdi->conn; - if (ctx->usb->devhdl == NULL) + if (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; + sr_info("Closing device %d on %d.%d interface %d.", sdi->index, + usb->bus, usb->address, USB_INTERFACE); + libusb_release_interface(usb->devhdl, USB_INTERFACE); + libusb_close(usb->devhdl); + usb->devhdl = NULL; sdi->status = SR_ST_INACTIVE; } -static int get_channel_offsets(struct context *ctx) +static int get_channel_offsets(const struct sr_dev_inst *sdi) { - int ret; + struct dev_context *devc; + struct sr_usb_dev_inst *usb; + GString *gs; + int chan, v, ret; + + sr_dbg("Getting channel offsets."); - sr_dbg("hantek-dso: getting channel offsets"); + devc = sdi->priv; + usb = sdi->conn; - ret = libusb_control_transfer(ctx->usb->devhdl, + ret = libusb_control_transfer(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)) { - sr_err("failed to get channel offsets: %d", ret); + (unsigned char *)&devc->channel_levels, + sizeof(devc->channel_levels), 200); + if (ret != sizeof(devc->channel_levels)) { + sr_err("Failed to get channel offsets: %s.", + libusb_error_name(ret)); return SR_ERR; } + /* Comes in as 16-bit numbers with the second byte always 0 on + * the DSO-2090. Guessing this is supposed to be big-endian, + * since that's how voltage offsets are submitted back to the DSO. + * Convert to host order now, so we can use them natively. + */ + for (chan = 0; chan < 2; chan++) { + for (v = 0; v < 9; v++) { + 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]); + } + } + + if (sr_log_loglevel_get() >= SR_LOG_DBG) { + gs = g_string_sized_new(128); + for (chan = 0; chan < 2; chan++) { + g_string_printf(gs, "CH%d:", chan + 1); + for (v = 0; v < 9; v++) { + g_string_append_printf(gs, " %.4x-%.4x", + devc->channel_levels[chan][v][0], + devc->channel_levels[chan][v][1]); + } + sr_dbg("%s", gs->str); + } + g_string_free(gs, TRUE); + } + return SR_OK; } -SR_PRIV int dso_set_trigger_samplerate(struct context *ctx) +static int dso_set_trigger_samplerate(const struct sr_dev_inst *sdi) { + struct dev_context *devc; + struct sr_usb_dev_inst *usb; int ret, tmp; uint8_t cmdstring[12]; uint16_t timebase_small[] = { 0xffff, 0xfffc, 0xfff7, 0xffe8, 0xffce, - 0xff9c, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79, 0xd8f1 }; + 0xff9c, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79, 0xd8f1 }; uint16_t timebase_large[] = { 0xffff, 0x0000, 0xfffc, 0xfff7, 0xffe8, - 0xffce, 0xff9d, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79 }; + 0xffce, 0xff9d, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79 }; + + sr_dbg("Preparing CMD_SET_TRIGGER_SAMPLERATE."); - sr_dbg("hantek-dso: sending CMD_SET_TRIGGER_SAMPLERATE"); + devc = sdi->priv; + usb = sdi->conn; memset(cmdstring, 0, sizeof(cmdstring)); /* Command */ cmdstring[0] = CMD_SET_TRIGGER_SAMPLERATE; /* Trigger source */ - cmdstring[2] = (ctx->triggersource & 0x03); + sr_dbg("Trigger source %s.", devc->triggersource); + if (!strcmp("CH2", devc->triggersource)) + tmp = 0; + else if (!strcmp("CH1", devc->triggersource)) + tmp = 1; + else if (!strcmp("EXT", devc->triggersource)) + tmp = 2; + else { + sr_err("Invalid trigger source: '%s'.", devc->triggersource); + return SR_ERR_ARG; + } + cmdstring[2] = tmp; /* Frame size */ - cmdstring[2] |= (ctx->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 2; + sr_dbg("Frame size: %d.", devc->framesize); + cmdstring[2] |= (devc->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 2; /* Timebase fast */ - switch (ctx->framesize) { - case FRAMESIZE_SMALL: - if (ctx->timebase < TIME_20us) + sr_dbg("Time base index: %d.", devc->timebase); + if (devc->framesize == FRAMESIZE_SMALL) { + 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) { - sr_err("hantek-dso: timebase < 40us only supported with 10K buffer"); + } else { + if (devc->timebase < TIME_40us) { + sr_err("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 */ - tmp = (((ctx->ch2_enabled ? 1 : 0) << 1) + (ctx->ch1_enabled ? 1 : 0)) - 1; + sr_dbg("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; + /* TODO: Is this right? */ + tmp = devc->timebase < TIME_10us ? 1 : 0; cmdstring[3] |= tmp << 2; /* Trigger slope: 0=positive 1=negative */ - cmdstring[3] |= (ctx->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3; + /* TODO: Does this work? */ + sr_dbg("Trigger slope: %d.", devc->triggerslope); + cmdstring[3] |= (devc->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3; - /* Timebase */ - if (ctx->timebase < TIME_100us) + /* Timebase slow */ + 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 */ - tmp = 0x77fff + 0x8000 * ctx->triggerposition; + sr_dbg("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(sdi) != SR_OK) return SR_ERR; - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, - DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, - cmdstring, sizeof(cmdstring), - &tmp, 100)) != 0) { - sr_err("Failed to set trigger/samplerate: %d", ret); + if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, + cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { + sr_err("Failed to set trigger/samplerate: %s.", + libusb_error_name(ret)); return SR_ERR; } + sr_dbg("Sent CMD_SET_TRIGGER_SAMPLERATE."); return SR_OK; } -SR_PRIV int dso_set_filters(struct context *ctx) +static int dso_set_filters(const struct sr_dev_inst *sdi) { + struct dev_context *devc; + struct sr_usb_dev_inst *usb; int ret, tmp; uint8_t cmdstring[8]; - sr_dbg("hantek-dso: sending CMD_SET_FILTERS"); + sr_dbg("Preparing CMD_SET_FILTERS."); + + devc = sdi->priv; + usb = sdi->conn; memset(cmdstring, 0, sizeof(cmdstring)); cmdstring[0] = CMD_SET_FILTERS; cmdstring[1] = 0x0f; - if (ctx->filter_ch1) + if (devc->filter_ch1) { + sr_dbg("Turning on CH1 filter."); cmdstring[2] |= 0x80; - if (ctx->filter_ch2) + } + if (devc->filter_ch2) { + sr_dbg("Turning on CH2 filter."); cmdstring[2] |= 0x40; - if (ctx->filter_trigger) + } + if (devc->filter_trigger) { + /* TODO: supported on the DSO-2090? */ + sr_dbg("Turning on trigger filter."); cmdstring[2] |= 0x20; + } - if (send_begin(ctx) != SR_OK) + if (send_begin(sdi) != SR_OK) return SR_ERR; - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, - DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, - cmdstring, sizeof(cmdstring), - &tmp, 100)) != 0) { - sr_err("Failed to set filters: %d", ret); + if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, + cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { + sr_err("Failed to set filters: %s.", libusb_error_name(ret)); return SR_ERR; } + sr_dbg("Sent CMD_SET_FILTERS."); return SR_OK; } -SR_PRIV int dso_set_voltage(struct context *ctx) +static int dso_set_voltage(const struct sr_dev_inst *sdi) { + struct dev_context *devc; + struct sr_usb_dev_inst *usb; int ret, tmp; uint8_t cmdstring[8]; - sr_dbg("hantek-dso: sending CMD_SET_VOLTAGE"); + sr_dbg("Preparing CMD_SET_VOLTAGE."); + + devc = sdi->priv; + usb = sdi->conn; memset(cmdstring, 0, sizeof(cmdstring)); cmdstring[0] = CMD_SET_VOLTAGE; cmdstring[1] = 0x0f; - cmdstring[2] = 0x03; - cmdstring[2] |= ((2 - ctx->voltage_ch1 % 3) << 6); - cmdstring[2] |= ((2 - ctx->voltage_ch2 % 3) << 4); -cmdstring[2] = 0x30; + cmdstring[2] = 0x30; + + /* CH1 volts/div is encoded in bits 0-1 */ + sr_dbg("CH1 vdiv index: %d.", devc->voltage_ch1); + switch (devc->voltage_ch1) { + case VDIV_1V: + case VDIV_100MV: + case VDIV_10MV: + cmdstring[2] |= 0x00; + break; + case VDIV_2V: + case VDIV_200MV: + case VDIV_20MV: + cmdstring[2] |= 0x01; + break; + case VDIV_5V: + case VDIV_500MV: + case VDIV_50MV: + cmdstring[2] |= 0x02; + break; + } - if (send_begin(ctx) != SR_OK) + /* CH2 volts/div is encoded in bits 2-3 */ + sr_dbg("CH2 vdiv index: %d.", devc->voltage_ch2); + switch (devc->voltage_ch2) { + case VDIV_1V: + case VDIV_100MV: + case VDIV_10MV: + cmdstring[2] |= 0x00; + break; + case VDIV_2V: + case VDIV_200MV: + case VDIV_20MV: + cmdstring[2] |= 0x04; + break; + case VDIV_5V: + case VDIV_500MV: + case VDIV_50MV: + cmdstring[2] |= 0x08; + break; + } + + if (send_begin(sdi) != SR_OK) return SR_ERR; - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, - DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, - cmdstring, sizeof(cmdstring), - &tmp, 100)) != 0) { - sr_err("Failed to set voltage: %d", ret); + if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, + cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { + sr_err("Failed to set voltage: %s.", libusb_error_name(ret)); return SR_ERR; } + sr_dbg("Sent CMD_SET_VOLTAGE."); return SR_OK; } -SR_PRIV int dso_set_relays(struct context *ctx) +static int dso_set_relays(const struct sr_dev_inst *sdi) { - int ret, cv1, cv2; - uint8_t relays[] = { 0x00, 0x04, 0x08, 0x02, 0x20, 0x40, 0x10, 0x01, + struct dev_context *devc; + struct sr_usb_dev_inst *usb; + GString *gs; + int ret, i; + uint8_t relays[17] = { 0x00, 0x04, 0x08, 0x02, 0x20, 0x40, 0x10, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; - sr_dbg("hantek-dso: sending CTRL_SETRELAYS"); + sr_dbg("Preparing CTRL_SETRELAYS."); - cv1 = ctx->voltage_ch1 / 3; - cv2 = ctx->voltage_ch2 / 3; -relays[0] = 0x01; - if (cv1 > 0) + devc = sdi->priv; + usb = sdi->conn; + + if (devc->voltage_ch1 < VDIV_1V) relays[1] = ~relays[1]; - if (cv1 > 1) + if (devc->voltage_ch1 < VDIV_100MV) relays[2] = ~relays[2]; - if (ctx->coupling_ch1 != COUPLING_AC) + sr_dbg("CH1 coupling: %d.", devc->coupling_ch1); + if (devc->coupling_ch1 != COUPLING_AC) relays[3] = ~relays[3]; - if (cv2 > 0) + if (devc->voltage_ch2 < VDIV_1V) relays[4] = ~relays[4]; - if (cv2 > 1) + if (devc->voltage_ch2 < VDIV_100MV) relays[5] = ~relays[5]; - if (ctx->coupling_ch2 != COUPLING_AC) + sr_dbg("CH2 coupling: %d.", devc->coupling_ch1); + if (devc->coupling_ch2 != COUPLING_AC) relays[6] = ~relays[6]; - if (ctx->triggersource == TRIGGER_EXT) + if (!strcmp(devc->triggersource, "EXT")) relays[7] = ~relays[7]; - if ((ret = libusb_control_transfer(ctx->usb->devhdl, + if (sr_log_loglevel_get() >= SR_LOG_DBG) { + gs = g_string_sized_new(128); + g_string_printf(gs, "Relays:"); + for (i = 0; i < 17; i++) + g_string_append_printf(gs, " %.2x", relays[i]); + sr_dbg("%s", gs->str); + g_string_free(gs, TRUE); + } + + if ((ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETRELAYS, - 0, 0, relays, sizeof(relays), 100)) != sizeof(relays)) { - sr_err("failed to set relays: %d", ret); + 0, 0, relays, 17, 100)) != sizeof(relays)) { + sr_err("Failed to set relays: %s.", libusb_error_name(ret)); return SR_ERR; } + sr_dbg("Sent CTRL_SETRELAYS."); return SR_OK; } -SR_PRIV int dso_set_voffsets(struct context *ctx) +static int dso_set_voffsets(const struct sr_dev_inst *sdi) { + struct dev_context *devc; + struct sr_usb_dev_inst *usb; int offset, ret; uint16_t *ch_levels; -// uint8_t offsets[17]; -uint8_t offsets[] = {0x20,0x75,0x30,0x3f,0x20,0xbd,0x3f,0x02,0x20,0x00,0x71,0x01,0x2e,0x0b,0x3f,0x02,0x50}; -//uint8_t offsets[] = {0xff, 0x75, 0x30, 0x3f, 0x20, 0xbd, -// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 -//}; - - sr_dbg("hantek-dso: sending CTRL_SETOFFSET"); - -// memset(offsets, 0, sizeof(offsets)); -// /* Channel 1 */ -// ch_levels = ctx->channel_levels[0][VOLTAGE_10mV - ctx->voltage_ch1]; -// offset = (ch_levels[1] - ch_levels[0]) * ctx->voffset_ch1 + ch_levels[0]; -// offsets[0] = (offset >> 8) | 0x20; -// offsets[1] = offset & 0xff; -// -// /* Channel 2 */ -// ch_levels = ctx->channel_levels[1][VOLTAGE_10mV - ctx->voltage_ch2]; -// offset = (ch_levels[1] - ch_levels[0]) * ctx->voffset_ch2 + ch_levels[0]; -// offsets[2] = (offset >> 8) | 0x20; -// offsets[3] = offset & 0xff; -// -// /* Trigger */ -// offset = MAX_VERT_TRIGGER * ctx->voffset_trigger; -// offsets[4] = (offset >> 8) | 0x20; -// offsets[5] = offset & 0xff; - - if ((ret = libusb_control_transfer(ctx->usb->devhdl, + uint8_t offsets[17]; + + sr_dbg("Preparing CTRL_SETOFFSET."); + + devc = sdi->priv; + usb = sdi->conn; + + memset(offsets, 0, sizeof(offsets)); + /* Channel 1 */ + 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("CH1 offset: %3.2f (%.2x%.2x).", devc->voffset_ch1, + offsets[0], offsets[1]); + + /* Channel 2 */ + 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("CH2 offset: %3.2f (%.2x%.2x).", devc->voffset_ch2, + offsets[2], offsets[3]); + + /* Trigger */ + offset = MAX_VERT_TRIGGER * devc->voffset_trigger; + offsets[4] = (offset >> 8) | 0x20; + offsets[5] = offset & 0xff; + sr_dbg("Trigger offset: %3.2f (%.2x%.2x).", devc->voffset_trigger, + offsets[4], offsets[5]); + + if ((ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETOFFSET, 0, 0, offsets, sizeof(offsets), 100)) != sizeof(offsets)) { - sr_err("failed to set offsets: %d", ret); + sr_err("Failed to set offsets: %s.", libusb_error_name(ret)); return SR_ERR; } + sr_dbg("Sent CTRL_SETOFFSET."); return SR_OK; } -SR_PRIV int dso_enable_trigger(struct context *ctx) +SR_PRIV int dso_enable_trigger(const struct sr_dev_inst *sdi) { + struct sr_usb_dev_inst *usb; int ret, tmp; uint8_t cmdstring[2]; - sr_dbg("hantek-dso: sending CMD_ENABLE_TRIGGER"); + sr_dbg("Sending CMD_ENABLE_TRIGGER."); + + usb = sdi->conn; memset(cmdstring, 0, sizeof(cmdstring)); cmdstring[0] = CMD_ENABLE_TRIGGER; cmdstring[1] = 0x00; - if (send_begin(ctx) != SR_OK) + if (send_begin(sdi) != SR_OK) return SR_ERR; - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, - DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, - cmdstring, sizeof(cmdstring), - &tmp, 100)) != 0) { - sr_err("Failed to enable trigger: %d", ret); + if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, + cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { + sr_err("Failed to enable trigger: %s.", libusb_error_name(ret)); return SR_ERR; } return SR_OK; } -SR_PRIV int dso_force_trigger(struct context *ctx) +SR_PRIV int dso_force_trigger(const struct sr_dev_inst *sdi) { + struct sr_usb_dev_inst *usb; int ret, tmp; uint8_t cmdstring[2]; - sr_dbg("hantek-dso: sending CMD_FORCE_TRIGGER"); + sr_dbg("Sending CMD_FORCE_TRIGGER."); + + usb = sdi->conn; memset(cmdstring, 0, sizeof(cmdstring)); cmdstring[0] = CMD_FORCE_TRIGGER; cmdstring[1] = 0x00; - if (send_begin(ctx) != SR_OK) + if (send_begin(sdi) != SR_OK) return SR_ERR; - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, - DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, - cmdstring, sizeof(cmdstring), - &tmp, 100)) != 0) { - sr_err("Failed to force trigger: %d", ret); + if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, + cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { + sr_err("Failed to force trigger: %s.", libusb_error_name(ret)); return SR_ERR; } return SR_OK; } -SR_PRIV int dso_init(struct context *ctx) +SR_PRIV int dso_init(const struct sr_dev_inst *sdi) { - sr_dbg("hantek-dso: initializing dso"); - - if (get_channel_offsets(ctx) != SR_OK) - return SR_ERR; + sr_dbg("Initializing DSO."); - if (dso_set_trigger_samplerate(ctx) != SR_OK) + if (get_channel_offsets(sdi) != SR_OK) return SR_ERR; - if (dso_set_filters(ctx) != SR_OK) + if (dso_set_trigger_samplerate(sdi) != SR_OK) return SR_ERR; - if (dso_set_voltage(ctx) != SR_OK) + if (dso_set_filters(sdi) != SR_OK) return SR_ERR; - if (dso_set_relays(ctx) != SR_OK) + if (dso_set_voltage(sdi) != SR_OK) return SR_ERR; - if (dso_set_voffsets(ctx) != SR_OK) + if (dso_set_relays(sdi) != SR_OK) return SR_ERR; - if (dso_enable_trigger(ctx) != SR_OK) + if (dso_set_voffsets(sdi) != SR_OK) return SR_ERR; - if (dso_force_trigger(ctx) != SR_OK) + if (dso_enable_trigger(sdi) != SR_OK) return SR_ERR; return SR_OK; } -SR_PRIV uint8_t dso_get_capturestate(struct context *ctx) +SR_PRIV int dso_get_capturestate(const struct sr_dev_inst *sdi, + uint8_t *capturestate, uint32_t *trigger_offset) { - int ret, tmp; + struct sr_usb_dev_inst *usb; + int ret, tmp, i; + unsigned int bitvalue, toff; uint8_t cmdstring[2], inbuf[512]; - sr_dbg("hantek-dso: sending CMD_GET_CAPTURESTATE"); + sr_dbg("Sending CMD_GET_CAPTURESTATE."); + + usb = sdi->conn; cmdstring[0] = CMD_GET_CAPTURESTATE; cmdstring[1] = 0; - if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) { - sr_dbg("Failed to send get_capturestate command: %d", ret); - return CAPTURE_UNKNOWN; + if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { + sr_dbg("Failed to send get_capturestate command: %s.", + libusb_error_name(ret)); + return SR_ERR; } - if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, - DSO_EP_IN | LIBUSB_ENDPOINT_IN, + if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_IN, inbuf, 512, &tmp, 100)) != 0) { - sr_dbg("Failed to get capturestate: %d", ret); - return CAPTURE_UNKNOWN; + sr_dbg("Failed to get capturestate: %s.", + libusb_error_name(ret)); + return SR_ERR; + } + *capturestate = inbuf[0]; + toff = (inbuf[1] << 16) | (inbuf[3] << 8) | inbuf[2]; + + /* + * This conversion comes from the openhantek project. + * Each set bit in the 24-bit value inverts all bits with a lower + * value. No idea why the device reports the trigger point this way. + */ + bitvalue = 1; + for (i = 0; i < 24; i++) { + /* Each set bit inverts all bits with a lower value. */ + if(toff & bitvalue) + toff ^= bitvalue - 1; + bitvalue <<= 1; } + *trigger_offset = toff; - return inbuf[0]; + return SR_OK; } -SR_PRIV uint8_t dso_capture_start(struct context *ctx) +SR_PRIV int dso_capture_start(const struct sr_dev_inst *sdi) { int ret; uint8_t cmdstring[2]; - sr_dbg("hantek-dso: sending CMD_CAPTURE_START"); + sr_dbg("Sending CMD_CAPTURE_START."); cmdstring[0] = CMD_CAPTURE_START; cmdstring[1] = 0; - if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) { - sr_err("Failed to send capture_start command: %d", ret); + if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { + sr_err("Failed to send capture_start command: %s.", + libusb_error_name(ret)); return SR_ERR; } return SR_OK; } -SR_PRIV int dso_get_channeldata(struct context *ctx, libusb_transfer_cb_fn cb) +SR_PRIV int dso_get_channeldata(const struct sr_dev_inst *sdi, + libusb_transfer_cb_fn cb) { + struct dev_context *devc; + struct sr_usb_dev_inst *usb; struct libusb_transfer *transfer; int num_transfers, ret, i; uint8_t cmdstring[2]; unsigned char *buf; - sr_dbg("hantek-dso: sending CMD_GET_CHANNELDATA"); + sr_dbg("Sending CMD_GET_CHANNELDATA."); + + devc = sdi->priv; + usb = sdi->conn; cmdstring[0] = CMD_GET_CHANNELDATA; cmdstring[1] = 0; - if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) { - sr_err("Failed to get channel data: %d", ret); + if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { + sr_err("Failed to get channel data: %s.", + libusb_error_name(ret)); return SR_ERR; } - /* TODO: dso-2xxx only */ - num_transfers = ctx->framesize * sizeof(unsigned short) / ctx->epin_maxpacketsize; - sr_dbg("hantek-dso: queueing up %d transfers", num_transfers); + /* TODO: DSO-2xxx only. */ + num_transfers = devc->framesize * + sizeof(unsigned short) / devc->epin_maxpacketsize; + sr_dbg("Queueing up %d transfers.", num_transfers); for (i = 0; i < num_transfers; i++) { - if (!(buf = g_try_malloc(ctx->epin_maxpacketsize))) { - sr_err("hantek-dso: %s: buf malloc failed", __func__); + if (!(buf = g_try_malloc(devc->epin_maxpacketsize))) { + sr_err("Failed to malloc USB endpoint buffer."); return SR_ERR_MALLOC; } transfer = libusb_alloc_transfer(0); - libusb_fill_bulk_transfer(transfer, ctx->usb->devhdl, - DSO_EP_IN | LIBUSB_ENDPOINT_IN, buf, - ctx->epin_maxpacketsize, cb, ctx, 40); + libusb_fill_bulk_transfer(transfer, usb->devhdl, DSO_EP_IN, buf, + devc->epin_maxpacketsize, cb, (void *)sdi, 40); if ((ret = libusb_submit_transfer(transfer)) != 0) { - sr_err("failed to submit transfer: %d", ret); + sr_err("Failed to submit transfer: %s.", + libusb_error_name(ret)); /* TODO: Free them all. */ libusb_free_transfer(transfer); g_free(buf); @@ -622,4 +785,3 @@ SR_PRIV int dso_get_channeldata(struct context *ctx, libusb_transfer_cb_fn cb) return SR_OK; } -