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libsigrok/hardware/hantek-dso/dso.c

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/*
* This file is part of the sigrok project.
*
* Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
* With protocol information from the hantekdso project,
* Copyright (C) 2008 Oleg Khudyakov <prcoder@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "dso.h"
#include <string.h>
#include <glib.h>
#include <libusb.h>
extern struct sr_dev_driver hantek_dso_driver_info;
static int send_begin(struct dev_context *devc)
{
int ret;
unsigned char buffer[] = {0x0f, 0x03, 0x03, 0x03, 0x68, 0xac, 0xfe,
0x00, 0x01, 0x00};
sr_dbg("Sending CTRL_BEGINCOMMAND.");
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);
return SR_ERR;
}
return SR_OK;
}
static int send_bulkcmd(struct dev_context *devc, uint8_t *cmdstring, int cmdlen)
{
int ret, tmp;
if (send_begin(devc) != SR_OK)
return SR_ERR;
if ((ret = libusb_bulk_transfer(devc->usb->devhdl,
DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
cmdstring, cmdlen, &tmp, 200)) != 0)
return SR_ERR;
return SR_OK;
}
SR_PRIV int dso_getmps(libusb_device *dev)
{
struct libusb_device_descriptor des;
struct libusb_config_descriptor *conf_dsc;
const struct libusb_interface_descriptor *intf_dsc;
int mps;
if (libusb_get_device_descriptor(dev, &des) != 0)
return 0;
if (des.bNumConfigurations != 1)
return 0;
if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0)
return 0;
mps = 0;
intf_dsc = &(conf_dsc->interface[0].altsetting[0]);
if (intf_dsc->bNumEndpoints != 2)
goto err;
if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) !=
(2 | LIBUSB_ENDPOINT_OUT))
/* The first endpoint should be 2 (outbound). */
goto err;
if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) !=
(6 | LIBUSB_ENDPOINT_IN))
/* The second endpoint should be 6 (inbound). */
goto err;
mps = intf_dsc->endpoint[1].wMaxPacketSize;
err:
if (conf_dsc)
libusb_free_config_descriptor(conf_dsc);
return mps;
}
SR_PRIV int dso_open(struct sr_dev_inst *sdi)
{
libusb_device **devlist;
struct libusb_device_descriptor des;
struct dev_context *devc;
int err, skip, i;
devc = sdi->priv;
if (sdi->status == SR_ST_ACTIVE)
/* already in use */
return SR_ERR;
skip = 0;
libusb_get_device_list(NULL, &devlist);
for (i = 0; devlist[i]; i++) {
if ((err = libusb_get_device_descriptor(devlist[i], &des))) {
sr_err("Failed to get device descriptor: %d.", err);
continue;
}
if (des.idVendor != devc->profile->fw_vid
|| des.idProduct != devc->profile->fw_pid)
continue;
if (sdi->status == SR_ST_INITIALIZING) {
if (skip != sdi->index) {
/* Skip devices of this type that aren't the one we want. */
skip += 1;
continue;
}
} else if (sdi->status == SR_ST_INACTIVE) {
/*
* 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]) != devc->usb->bus
|| libusb_get_device_address(devlist[i]) != devc->usb->address)
/* this is not the one */
continue;
}
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.
*/
devc->usb->address = libusb_get_device_address(devlist[i]);
if (!(devc->epin_maxpacketsize = dso_getmps(devlist[i])))
sr_err("Wrong endpoint profile.");
else {
sdi->status = SR_ST_ACTIVE;
sr_info("Opened device %d on %d.%d interface %d.",
sdi->index, devc->usb->bus,
devc->usb->address, USB_INTERFACE);
}
} else {
sr_err("Failed to open device: %d.", err);
}
/* If we made it here, we handled the device (somehow). */
break;
}
libusb_free_device_list(devlist, 1);
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR;
return SR_OK;
}
SR_PRIV void dso_close(struct sr_dev_inst *sdi)
{
struct dev_context *devc;
devc = sdi->priv;
if (devc->usb->devhdl == NULL)
return;
sr_info("Closing device %d on %d.%d interface %d.", sdi->index,
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 dev_context *devc)
{
GString *gs;
int chan, v, ret;
sr_dbg("Getting channel offsets.");
ret = libusb_control_transfer(devc->usb->devhdl,
LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR,
CTRL_READ_EEPROM, EEPROM_CHANNEL_OFFSETS, 0,
(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;
}
/* 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(gs->str);
}
g_string_free(gs, TRUE);
}
return SR_OK;
}
SR_PRIV int dso_set_trigger_samplerate(struct dev_context *devc)
{
int ret, tmp;
uint8_t cmdstring[12];
uint16_t timebase_small[] = { 0xffff, 0xfffc, 0xfff7, 0xffe8, 0xffce,
0xff9c, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79, 0xd8f1 };
uint16_t timebase_large[] = { 0xffff, 0x0000, 0xfffc, 0xfff7, 0xffe8,
0xffce, 0xff9d, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79 };
sr_dbg("Preparing CMD_SET_TRIGGER_SAMPLERATE.");
memset(cmdstring, 0, sizeof(cmdstring));
/* Command */
cmdstring[0] = CMD_SET_TRIGGER_SAMPLERATE;
/* Trigger source */
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 */
sr_dbg("Frame size: %d.", devc->framesize);
cmdstring[2] |= (devc->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 2;
/* Timebase fast */
sr_dbg("Time base index: %d.", devc->timebase);
switch (devc->framesize) {
case FRAMESIZE_SMALL:
if (devc->timebase < TIME_20us)
tmp = 0;
else if (devc->timebase == TIME_20us)
tmp = 1;
else if (devc->timebase == TIME_40us)
tmp = 2;
else if (devc->timebase == TIME_100us)
tmp = 3;
else if (devc->timebase >= TIME_200us)
tmp = 4;
break;
case FRAMESIZE_LARGE:
if (devc->timebase < TIME_40us) {
sr_err("Timebase < 40us only supported with 10K buffer.");
return SR_ERR_ARG;
}
else if (devc->timebase == TIME_40us)
tmp = 0;
else if (devc->timebase == TIME_100us)
tmp = 2;
else if (devc->timebase == TIME_200us)
tmp = 3;
else if (devc->timebase >= TIME_400us)
tmp = 4;
break;
}
cmdstring[2] |= (tmp & 0x07) << 5;
/* Enabled channels: 00=CH1 01=CH2 10=both */
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 = devc->timebase < TIME_10us ? 1 : 0;
cmdstring[3] |= tmp << 2;
/* Trigger slope: 0=positive 1=negative */
/* TODO: Does this work? */
sr_dbg("Trigger slope: %d.", devc->triggerslope);
cmdstring[3] |= (devc->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3;
/* Timebase slow */
if (devc->timebase < TIME_100us)
tmp = 0;
else if (devc->timebase > TIME_400ms)
tmp = 0xffed;
else {
if (devc->framesize == FRAMESIZE_SMALL)
tmp = timebase_small[devc->timebase - 3];
else
tmp = timebase_large[devc->timebase - 3];
}
cmdstring[4] = tmp & 0xff;
cmdstring[5] = (tmp >> 8) & 0xff;
/* Horizontal trigger position */
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(devc) != SR_OK)
return SR_ERR;
if ((ret = libusb_bulk_transfer(devc->usb->devhdl,
DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
cmdstring, sizeof(cmdstring),
&tmp, 100)) != 0) {
sr_err("Failed to set trigger/samplerate: %d.", ret);
return SR_ERR;
}
sr_dbg("Sent CMD_SET_TRIGGER_SAMPLERATE.");
return SR_OK;
}
SR_PRIV int dso_set_filters(struct dev_context *devc)
{
int ret, tmp;
uint8_t cmdstring[8];
sr_dbg("Preparing CMD_SET_FILTERS.");
memset(cmdstring, 0, sizeof(cmdstring));
cmdstring[0] = CMD_SET_FILTERS;
cmdstring[1] = 0x0f;
if (devc->filter_ch1) {
sr_dbg("Turning on CH1 filter.");
cmdstring[2] |= 0x80;
}
if (devc->filter_ch2) {
sr_dbg("Turning on CH2 filter.");
cmdstring[2] |= 0x40;
}
if (devc->filter_trigger) {
/* TODO: supported on the DSO-2090? */
sr_dbg("Turning on trigger filter.");
cmdstring[2] |= 0x20;
}
if (send_begin(devc) != SR_OK)
return SR_ERR;
if ((ret = libusb_bulk_transfer(devc->usb->devhdl,
DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
cmdstring, sizeof(cmdstring),
&tmp, 100)) != 0) {
sr_err("Failed to set filters: %d", ret);
return SR_ERR;
}
sr_dbg("Sent CMD_SET_FILTERS.");
return SR_OK;
}
SR_PRIV int dso_set_voltage(struct dev_context *devc)
{
int ret, tmp;
uint8_t cmdstring[8];
sr_dbg("Preparing CMD_SET_VOLTAGE.");
memset(cmdstring, 0, sizeof(cmdstring));
cmdstring[0] = CMD_SET_VOLTAGE;
cmdstring[1] = 0x0f;
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;
}
/* 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(devc) != SR_OK)
return SR_ERR;
if ((ret = libusb_bulk_transfer(devc->usb->devhdl,
DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
cmdstring, sizeof(cmdstring),
&tmp, 100)) != 0) {
sr_err("Failed to set voltage: %d.", ret);
return SR_ERR;
}
sr_dbg("Sent CMD_SET_VOLTAGE.");
return SR_OK;
}
SR_PRIV int dso_set_relays(struct dev_context *devc)
{
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("Preparing CTRL_SETRELAYS.");
if (devc->voltage_ch1 < VDIV_1V)
relays[1] = ~relays[1];
if (devc->voltage_ch1 < VDIV_100MV)
relays[2] = ~relays[2];
sr_dbg("CH1 coupling: %d.", devc->coupling_ch1);
if (devc->coupling_ch1 != COUPLING_AC)
relays[3] = ~relays[3];
if (devc->voltage_ch2 < VDIV_1V)
relays[4] = ~relays[4];
if (devc->voltage_ch2 < VDIV_100MV)
relays[5] = ~relays[5];
sr_dbg("CH2 coupling: %d.", devc->coupling_ch1);
if (devc->coupling_ch2 != COUPLING_AC)
relays[6] = ~relays[6];
if (!strcmp(devc->triggersource, "EXT"))
relays[7] = ~relays[7];
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(gs->str);
g_string_free(gs, TRUE);
}
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);
return SR_ERR;
}
sr_dbg("Sent CTRL_SETRELAYS.");
return SR_OK;
}
SR_PRIV int dso_set_voffsets(struct dev_context *devc)
{
int offset, ret;
uint16_t *ch_levels;
uint8_t offsets[17];
sr_dbg("Preparing CTRL_SETOFFSET.");
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(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);
return SR_ERR;
}
sr_dbg("Sent CTRL_SETOFFSET.");
return SR_OK;
}
SR_PRIV int dso_enable_trigger(struct dev_context *devc)
{
int ret, tmp;
uint8_t cmdstring[2];
sr_dbg("Sending CMD_ENABLE_TRIGGER.");
memset(cmdstring, 0, sizeof(cmdstring));
cmdstring[0] = CMD_ENABLE_TRIGGER;
cmdstring[1] = 0x00;
if (send_begin(devc) != SR_OK)
return SR_ERR;
if ((ret = libusb_bulk_transfer(devc->usb->devhdl,
DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
cmdstring, sizeof(cmdstring),
&tmp, 100)) != 0) {
sr_err("Failed to enable trigger: %d.", ret);
return SR_ERR;
}
return SR_OK;
}
SR_PRIV int dso_force_trigger(struct dev_context *devc)
{
int ret, tmp;
uint8_t cmdstring[2];
sr_dbg("Sending CMD_FORCE_TRIGGER.");
memset(cmdstring, 0, sizeof(cmdstring));
cmdstring[0] = CMD_FORCE_TRIGGER;
cmdstring[1] = 0x00;
if (send_begin(devc) != SR_OK)
return SR_ERR;
if ((ret = libusb_bulk_transfer(devc->usb->devhdl,
DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
cmdstring, sizeof(cmdstring),
&tmp, 100)) != 0) {
sr_err("Failed to force trigger: %d.", ret);
return SR_ERR;
}
return SR_OK;
}
SR_PRIV int dso_init(struct dev_context *devc)
{
sr_dbg("Initializing DSO.");
if (get_channel_offsets(devc) != SR_OK)
return SR_ERR;
if (dso_set_trigger_samplerate(devc) != SR_OK)
return SR_ERR;
if (dso_set_filters(devc) != SR_OK)
return SR_ERR;
if (dso_set_voltage(devc) != SR_OK)
return SR_ERR;
if (dso_set_relays(devc) != SR_OK)
return SR_ERR;
if (dso_set_voffsets(devc) != SR_OK)
return SR_ERR;
if (dso_enable_trigger(devc) != SR_OK)
return SR_ERR;
return SR_OK;
}
SR_PRIV int dso_get_capturestate(struct dev_context *devc,
uint8_t *capturestate,
uint32_t *trigger_offset)
{
int ret, tmp, i;
unsigned int bitvalue, toff;
uint8_t cmdstring[2], inbuf[512];
sr_dbg("Sending CMD_GET_CAPTURESTATE.");
cmdstring[0] = CMD_GET_CAPTURESTATE;
cmdstring[1] = 0;
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(devc->usb->devhdl,
DSO_EP_IN | LIBUSB_ENDPOINT_IN,
inbuf, 512, &tmp, 100)) != 0) {
sr_dbg("Failed to get capturestate: %d.", 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 SR_OK;
}
SR_PRIV int dso_capture_start(struct dev_context *devc)
{
int ret;
uint8_t cmdstring[2];
sr_dbg("Sending CMD_CAPTURE_START.");
cmdstring[0] = CMD_CAPTURE_START;
cmdstring[1] = 0;
if ((ret = send_bulkcmd(devc, cmdstring, sizeof(cmdstring))) != SR_OK) {
sr_err("Failed to send capture_start command: %d.", ret);
return SR_ERR;
}
return SR_OK;
}
SR_PRIV int dso_get_channeldata(struct dev_context *devc, libusb_transfer_cb_fn cb)
{
struct libusb_transfer *transfer;
int num_transfers, ret, i;
uint8_t cmdstring[2];
unsigned char *buf;
sr_dbg("Sending CMD_GET_CHANNELDATA.");
cmdstring[0] = CMD_GET_CHANNELDATA;
cmdstring[1] = 0;
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 = 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(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, devc->usb->devhdl,
DSO_EP_IN | LIBUSB_ENDPOINT_IN, buf,
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. */
libusb_free_transfer(transfer);
g_free(buf);
return SR_ERR;
}
}
return SR_OK;
}
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