--- /dev/null
+/*
+ * This file is part of the sigrok project.
+ *
+ * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.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"
+
+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_parse_serial(const char *iSerial, const char *iProduct,
+ struct dev_context *devc)
+{
+ unsigned int u1, u2, u3, u4, u5, u6;
+
+ iProduct = 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->serial = u6;
+ 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_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 = 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_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 void stop_acquisition(const struct sr_dev_inst *sdi)
+{
+ struct sr_datafeed_packet packet;
+ struct dev_context *devc;
+
+ devc = sdi->priv;
+ sr_source_remove(devc->serial->fd);
+
+ /* 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(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(sdi, rate_map[i].val);
+ if (ret == SR_OK)
+ devc->cur_rate = rate;
+ return ret;
+ }
+ }
+ 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;
+ *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;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ GSList *l;
+ int num_channels, offset, i, j;
+ unsigned char byte;
+
+ drvc = di->priv;
+
+ /* Find this device's devc struct by its fd. */
+ 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;
+
+ /* No samples */
+ 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 FALSE;
+ }
+
+ /* 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 FALSE;
+
+ /* 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);
+ 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);
+
+ // Dont bother fixing this yet, keep it "old style"
+ /*
+ packet.type = SR_DF_ANALOG;
+ packet.length = 1024;
+ packet.unitsize = sizeof(double);
+ packet.payload = analog_out;
+ sr_session_send(ctx->session_dev_id, &packet);
+ */
+
+ packet.type = SR_DF_END;
+ sr_session_send(devc->session_dev_id, &packet);
+
+}
projects / libsigrok.git / blobdiff