+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2011 Daniel Ribeiro <drwyrm@gmail.com>
- * Copyright (C) 2012 Renato Caldas <rmsc@fe.up.pt>
- * Copyright (C) 2013 Lior Elazary <lelazary@yahoo.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 "protocol.h"
-
-/* serial protocol */
-#define mso_trans(a, v) \
- (((v) & 0x3f) | (((v) & 0xc0) << 6) | (((a) & 0xf) << 8) | \
- ((~(v) & 0x20) << 1) | ((~(v) & 0x80) << 7))
-
-static const char mso_head[] = { 0x40, 0x4c, 0x44, 0x53, 0x7e };
-static const char mso_foot[] = { 0x7e };
-
-extern SR_PRIV struct sr_dev_driver link_mso19_driver_info;
-static struct sr_dev_driver *di = &link_mso19_driver_info;
-
-SR_PRIV int mso_send_control_message(struct sr_serial_dev_inst *serial,
- uint16_t payload[], int n)
-{
- int i, w, ret, s = n * 2 + sizeof(mso_head) + sizeof(mso_foot);
- char *p, *buf;
-
- ret = SR_ERR;
-
- if (serial->fd < 0)
- goto ret;
-
- if (!(buf = g_try_malloc(s))) {
- sr_err("Failed to malloc message buffer.");
- ret = SR_ERR_MALLOC;
- goto ret;
- }
-
- p = buf;
- memcpy(p, mso_head, sizeof(mso_head));
- p += sizeof(mso_head);
-
- for (i = 0; i < n; i++) {
- *(uint16_t *) p = g_htons(payload[i]);
- p += 2;
- }
- memcpy(p, mso_foot, sizeof(mso_foot));
-
- w = 0;
- while (w < s) {
- ret = serial_write(serial, buf + w, s - w);
- if (ret < 0) {
- ret = SR_ERR;
- goto free;
- }
- w += ret;
- }
- ret = SR_OK;
-free:
- g_free(buf);
-ret:
- return ret;
-}
-
-SR_PRIV int mso_configure_trigger(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc = sdi->priv;
- uint16_t threshold_value = mso_calc_raw_from_mv(devc);
-
- threshold_value = 0x153C;
- uint8_t trigger_config = 0;
-
- if (devc->trigger_slope)
- trigger_config |= 0x04; //Trigger on falling edge
-
- switch (devc->trigger_outsrc) {
- case 1:
- trigger_config |= 0x00; //Trigger pulse output
- break;
- case 2:
- trigger_config |= 0x08; //PWM DAC from the pattern generator buffer
- break;
- case 3:
- trigger_config |= 0x18; //White noise
- break;
- }
-
- switch (devc->trigger_chan) {
- case 0:
- trigger_config |= 0x00; //DSO level trigger //b00000000
- break;
- case 1:
- trigger_config |= 0x20; //DSO level trigger & width < trigger_width
- break;
- case 2:
- trigger_config |= 0x40; //DSO level trigger & width >= trigger_width
- break;
- case 3:
- trigger_config |= 0x60; //LA combination trigger
- break;
- }
-
- //Last bit of trigger config reg 4 needs to be 1 for trigger enable,
- //otherwise the trigger is not enabled
- if (devc->use_trigger)
- trigger_config |= 0x80;
-
- uint16_t ops[18];
- ops[0] = mso_trans(3, threshold_value & 0xff);
- //The trigger_config also holds the 2 MSB bits from the threshold value
- ops[1] = mso_trans(4, trigger_config | ((threshold_value >> 8) & 0x03));
- ops[2] = mso_trans(5, devc->la_trigger);
- ops[3] = mso_trans(6, devc->la_trigger_mask);
- ops[4] = mso_trans(7, devc->trigger_holdoff[0]);
- ops[5] = mso_trans(8, devc->trigger_holdoff[1]);
-
- ops[6] = mso_trans(11,
- devc->dso_trigger_width /
- SR_HZ_TO_NS(devc->cur_rate));
-
- /* Select the SPI/I2C trigger config bank */
- ops[7] = mso_trans(REG_CTL2, (devc->ctlbase2 | BITS_CTL2_BANK(2)));
- /* Configure the SPI/I2C protocol trigger */
- ops[8] = mso_trans(REG_PT_WORD(0), devc->protocol_trigger.word[0]);
- ops[9] = mso_trans(REG_PT_WORD(1), devc->protocol_trigger.word[1]);
- ops[10] = mso_trans(REG_PT_WORD(2), devc->protocol_trigger.word[2]);
- ops[11] = mso_trans(REG_PT_WORD(3), devc->protocol_trigger.word[3]);
- ops[12] = mso_trans(REG_PT_MASK(0), devc->protocol_trigger.mask[0]);
- ops[13] = mso_trans(REG_PT_MASK(1), devc->protocol_trigger.mask[1]);
- ops[14] = mso_trans(REG_PT_MASK(2), devc->protocol_trigger.mask[2]);
- ops[15] = mso_trans(REG_PT_MASK(3), devc->protocol_trigger.mask[3]);
- ops[16] = mso_trans(REG_PT_SPIMODE, devc->protocol_trigger.spimode);
- /* Select the default config bank */
- ops[17] = mso_trans(REG_CTL2, devc->ctlbase2);
-
- return mso_send_control_message(devc->serial, ARRAY_AND_SIZE(ops));
-}
-
-SR_PRIV int mso_configure_threshold_level(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc = sdi->priv;
-
- return mso_dac_out(sdi, la_threshold_map[devc->la_threshold]);
-}
-
-SR_PRIV int mso_read_buffer(struct sr_dev_inst *sdi)
-{
- uint16_t ops[] = { mso_trans(REG_BUFFER, 0) };
- struct dev_context *devc = sdi->priv;
-
- sr_dbg("Requesting buffer dump.");
- return mso_send_control_message(devc->serial, ARRAY_AND_SIZE(ops));
-}
-
-SR_PRIV int mso_arm(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc = sdi->priv;
- uint16_t ops[] = {
- mso_trans(REG_CTL1, devc->ctlbase1 | BIT_CTL1_RESETFSM),
- mso_trans(REG_CTL1, devc->ctlbase1 | BIT_CTL1_ARM),
- mso_trans(REG_CTL1, devc->ctlbase1),
- };
-
- sr_dbg("Requesting trigger arm.");
- return mso_send_control_message(devc->serial, ARRAY_AND_SIZE(ops));
-}
-
-SR_PRIV int mso_force_capture(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc = sdi->priv;
- uint16_t ops[] = {
- mso_trans(REG_CTL1, devc->ctlbase1 | 8),
- mso_trans(REG_CTL1, devc->ctlbase1),
- };
-
- sr_dbg("Requesting forced capture.");
- return mso_send_control_message(devc->serial, ARRAY_AND_SIZE(ops));
-}
-
-SR_PRIV int mso_dac_out(const struct sr_dev_inst *sdi, uint16_t val)
-{
- struct dev_context *devc = sdi->priv;
- uint16_t ops[] = {
- mso_trans(REG_DAC1, (val >> 8) & 0xff),
- mso_trans(REG_DAC2, val & 0xff),
- mso_trans(REG_CTL1, devc->ctlbase1 | BIT_CTL1_RESETADC),
- };
-
- sr_dbg("Setting dac word to 0x%x.", val);
- return mso_send_control_message(devc->serial, ARRAY_AND_SIZE(ops));
-}
-
-SR_PRIV inline uint16_t mso_calc_raw_from_mv(struct dev_context * devc)
-{
- return (uint16_t) (0x200 -
- ((devc->dso_trigger_voltage / devc->dso_probe_attn) /
- devc->vbit));
-}
-
-SR_PRIV int mso_parse_serial(const char *iSerial, const char *iProduct,
- struct dev_context *devc)
-{
- unsigned int u1, u2, u3, u4, u5, u6;
-
- (void)iProduct;
-
- /* FIXME: This code is in the original app, but I think its
- * used only for the GUI */
- /* if (strstr(iProduct, "REV_02") || strstr(iProduct, "REV_03"))
- devc->num_sample_rates = 0x16;
- else
- devc->num_sample_rates = 0x10; */
-
- /* parse iSerial */
- if (iSerial[0] != '4' || sscanf(iSerial, "%5u%3u%3u%1u%1u%6u",
- &u1, &u2, &u3, &u4, &u5, &u6) != 6)
- return SR_ERR;
- devc->hwmodel = u4;
- devc->hwrev = u5;
- devc->vbit = u1 / 10000;
- if (devc->vbit == 0)
- devc->vbit = 4.19195;
- devc->dac_offset = u2;
- if (devc->dac_offset == 0)
- devc->dac_offset = 0x1ff;
- devc->offset_range = u3;
- if (devc->offset_range == 0)
- devc->offset_range = 0x17d;
-
- /*
- * FIXME: There is more code on the original software to handle
- * bigger iSerial strings, but as I can't test on my device
- * I will not implement it yet
- */
-
- return SR_OK;
-}
-
-SR_PRIV int mso_reset_adc(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc = sdi->priv;
- uint16_t ops[2];
-
- ops[0] = mso_trans(REG_CTL1, (devc->ctlbase1 | BIT_CTL1_RESETADC));
- ops[1] = mso_trans(REG_CTL1, devc->ctlbase1);
- devc->ctlbase1 |= BIT_CTL1_ADC_UNKNOWN4;
-
- sr_dbg("Requesting ADC reset.");
- return mso_send_control_message(devc->serial, ARRAY_AND_SIZE(ops));
-}
-
-SR_PRIV int mso_reset_fsm(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc = sdi->priv;
- uint16_t ops[1];
-
- devc->ctlbase1 |= BIT_CTL1_RESETFSM;
- ops[0] = mso_trans(REG_CTL1, devc->ctlbase1);
-
- sr_dbg("Requesting ADC reset.");
- return mso_send_control_message(devc->serial, ARRAY_AND_SIZE(ops));
-}
-
-SR_PRIV int mso_toggle_led(struct sr_dev_inst *sdi, int state)
-{
- struct dev_context *devc = sdi->priv;
- uint16_t ops[1];
-
- devc->ctlbase1 &= ~BIT_CTL1_LED;
- if (state)
- devc->ctlbase1 |= BIT_CTL1_LED;
- ops[0] = mso_trans(REG_CTL1, devc->ctlbase1);
-
- sr_dbg("Requesting LED toggle.");
- return mso_send_control_message(devc->serial, ARRAY_AND_SIZE(ops));
-}
-
-SR_PRIV void stop_acquisition(const struct sr_dev_inst *sdi)
-{
- struct sr_datafeed_packet packet;
- struct dev_context *devc;
-
- devc = sdi->priv;
- serial_source_remove(sdi->session, devc->serial);
-
- /* Terminate session */
- packet.type = SR_DF_END;
- sr_session_send(sdi, &packet);
-}
-
-SR_PRIV int mso_clkrate_out(struct sr_serial_dev_inst *serial, uint16_t val)
-{
- uint16_t ops[] = {
- mso_trans(REG_CLKRATE1, (val >> 8) & 0xff),
- mso_trans(REG_CLKRATE2, val & 0xff),
- };
-
- sr_dbg("Setting clkrate word to 0x%x.", val);
- return mso_send_control_message(serial, ARRAY_AND_SIZE(ops));
-}
-
-SR_PRIV int mso_configure_rate(const struct sr_dev_inst *sdi, uint32_t rate)
-{
- struct dev_context *devc = sdi->priv;
- unsigned int i;
- int ret = SR_ERR;
-
- for (i = 0; i < ARRAY_SIZE(rate_map); i++) {
- if (rate_map[i].rate == rate) {
- devc->ctlbase2 = rate_map[i].slowmode;
- ret = mso_clkrate_out(devc->serial, rate_map[i].val);
- if (ret == SR_OK)
- devc->cur_rate = rate;
- return ret;
- }
- }
-
- if (ret != SR_OK)
- sr_err("Unsupported rate.");
-
- return ret;
-}
-
-SR_PRIV int mso_check_trigger(struct sr_serial_dev_inst *serial, uint8_t *info)
-{
- uint16_t ops[] = { mso_trans(REG_TRIGGER, 0) };
- int ret;
-
- sr_dbg("Requesting trigger state.");
- ret = mso_send_control_message(serial, ARRAY_AND_SIZE(ops));
- if (info == NULL || ret != SR_OK)
- return ret;
-
- uint8_t buf = 0;
- if (serial_read(serial, &buf, 1) != 1) /* FIXME: Need timeout */
- ret = SR_ERR;
- if (!info)
- *info = buf;
-
- sr_dbg("Trigger state is: 0x%x.", *info);
- return ret;
-}
-
-SR_PRIV int mso_receive_data(int fd, int revents, void *cb_data)
-{
- struct sr_datafeed_packet packet;
- struct sr_datafeed_logic logic;
- struct sr_dev_inst *sdi;
- GSList *l;
- int i;
-
- struct drv_context *drvc = di->priv;
-
- /* Find this device's devc struct by its fd. */
- struct dev_context *devc = NULL;
- for (l = drvc->instances; l; l = l->next) {
- sdi = l->data;
- devc = sdi->priv;
- if (devc->serial->fd == fd)
- break;
- devc = NULL;
- }
- if (!devc)
- /* Shouldn't happen. */
- return TRUE;
-
- (void)revents;
-
- uint8_t in[1024];
- size_t s = serial_read(devc->serial, in, sizeof(in));
-
- if (s <= 0)
- return FALSE;
-
- /* Check if we triggered, then send a command that we are ready
- * to read the data */
- if (devc->trigger_state != MSO_TRIGGER_DATAREADY) {
- devc->trigger_state = in[0];
- if (devc->trigger_state == MSO_TRIGGER_DATAREADY) {
- mso_read_buffer(sdi);
- devc->buffer_n = 0;
- } else {
- mso_check_trigger(devc->serial, NULL);
- }
- return TRUE;
- }
-
- /* the hardware always dumps 1024 samples, 24bits each */
- if (devc->buffer_n < 3072) {
- memcpy(devc->buffer + devc->buffer_n, in, s);
- devc->buffer_n += s;
- }
- if (devc->buffer_n < 3072)
- return TRUE;
-
- /* do the conversion */
- uint8_t logic_out[1024];
- double analog_out[1024];
- for (i = 0; i < 1024; i++) {
- /* FIXME: Need to do conversion to mV */
- analog_out[i] = (devc->buffer[i * 3] & 0x3f) |
- ((devc->buffer[i * 3 + 1] & 0xf) << 6);
- (void)analog_out;
- logic_out[i] = ((devc->buffer[i * 3 + 1] & 0x30) >> 4) |
- ((devc->buffer[i * 3 + 2] & 0x3f) << 2);
- }
-
- packet.type = SR_DF_LOGIC;
- packet.payload = &logic;
- logic.length = 1024;
- logic.unitsize = 1;
- logic.data = logic_out;
- sr_session_send(cb_data, &packet);
-
- devc->num_samples += 1024;
-
- if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
- sr_info("Requested number of samples reached.");
- sdi->driver->dev_acquisition_stop(sdi, cb_data);
- }
-
- return TRUE;
-}
-
-SR_PRIV int mso_configure_channels(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- struct sr_channel *ch;
- GSList *l;
- char *tc;
-
- devc = sdi->priv;
-
- devc->la_trigger_mask = 0xFF; //the mask for the LA_TRIGGER (bits set to 0 matter, those set to 1 are ignored).
- devc->la_trigger = 0x00; //The value of the LA byte that generates a trigger event (in that mode).
- devc->dso_trigger_voltage = 3;
- devc->dso_probe_attn = 1;
- devc->trigger_outsrc = 0;
- devc->trigger_chan = 3; //LA combination trigger
- devc->use_trigger = FALSE;
-
- for (l = sdi->channels; l; l = l->next) {
- ch = (struct sr_channel *)l->data;
- if (ch->enabled == FALSE)
- continue;
-
- int channel_bit = 1 << (ch->index);
- if (!(ch->trigger))
- continue;
-
- devc->use_trigger = TRUE;
- //Configure trigger mask and value.
- for (tc = ch->trigger; *tc; tc++) {
- devc->la_trigger_mask &= ~channel_bit;
- if (*tc == '1')
- devc->la_trigger |= channel_bit;
- }
- }
-
- return SR_OK;
-}