+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2014 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 <string.h>
-#include <errno.h>
-#include "protocol.h"
-
-static void dump_packet(char *msg, uint8_t *packet)
-{
- int i;
- char str[128];
-
- str[0] = 0;
- for (i = 0; i < PACKET_SIZE; i++)
- sprintf(str + strlen(str), "%.2x ", packet[i]);
- sr_dbg("%s: %s", msg, str);
-
-}
-
-static void handle_packet(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- struct sr_datafeed_packet packet;
- struct sr_datafeed_analog analog;
- float value, data[MAX_CHANNELS];
- int offset, i;
-
- devc = sdi->priv;
- dump_packet("received", devc->packet);
- packet.type = SR_DF_ANALOG;
- packet.payload = &analog;
- analog.channels = sdi->channels;
- analog.num_samples = 1;
-
- analog.mq = SR_MQ_VOLTAGE;
- analog.unit = SR_UNIT_VOLT;
- analog.mqflags = SR_MQFLAG_DC;
- analog.data = data;
- for (i = 0; i < devc->model->num_channels; i++) {
- offset = 2 + i * 4;
- value = ((devc->packet[offset] << 8) + devc->packet[offset + 1]) / 100.0;
- analog.data[i] = value;
- devc->config[i].output_voltage_last = value;
- }
- sr_session_send(sdi, &packet);
-
- analog.mq = SR_MQ_CURRENT;
- analog.unit = SR_UNIT_AMPERE;
- analog.mqflags = 0;
- analog.data = data;
- for (i = 0; i < devc->model->num_channels; i++) {
- offset = 4 + i * 4;
- value = ((devc->packet[offset] << 8) + devc->packet[offset + 1]) / 1000.0;
- analog.data[i] = value;
- devc->config[i].output_current_last = value;
- }
- sr_session_send(sdi, &packet);
-
- for (i = 0; i < devc->model->num_channels; i++)
- devc->config[i].output_enabled = (devc->packet[15] & (1 << i)) ? TRUE : FALSE;
-
- devc->over_current_protection = devc->packet[18] ? TRUE : FALSE;
- if (devc->packet[19] < 3)
- devc->channel_mode = devc->packet[19];
-
-}
-
-SR_PRIV void send_packet(const struct sr_dev_inst *sdi, uint8_t *packet)
-{
- struct sr_serial_dev_inst *serial;
-
- serial = sdi->conn;
- if (serial_write(serial, packet, PACKET_SIZE) == -1)
- sr_dbg("Failed to send packet: %s", strerror(errno));
- dump_packet("sent", packet);
-}
-
-SR_PRIV void send_config(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- uint8_t packet[PACKET_SIZE];
- int value, offset, i;
-
- devc = sdi->priv;
- memset(packet, 0, PACKET_SIZE);
- packet[0] = 0xaa;
- packet[1] = 0x20;
- packet[14] = 0x01;
- packet[16] = 0x01;
- for (i = 0; i < devc->model->num_channels; i++) {
- offset = 2 + i * 4;
- value = devc->config[i].output_voltage_max * 100;
- packet[offset] = (value >> 8) & 0xff;
- packet[offset + 1] = value & 0xff;
- value = devc->config[i].output_current_max * 1000;
- packet[offset + 2] = (value >> 8) & 0xff;
- packet[offset + 3] = value & 0xff;
- if (devc->config[i].output_enabled_set)
- packet[15] |= 1 << i;
- }
- packet[18] = devc->over_current_protection_set ? 1 : 0;
- packet[19] = devc->channel_mode_set;
- /* Checksum. */
- value = 0;
- for (i = 0; i < PACKET_SIZE - 1; i++)
- value += packet[i];
- packet[i] = value & 0xff;
- send_packet(sdi, packet);
- devc->config_dirty = FALSE;
-
-}
-
-SR_PRIV int atten_pps3xxx_receive_data(int fd, int revents, void *cb_data)
-{
- struct dev_context *devc;
- const struct sr_dev_inst *sdi;
- struct sr_serial_dev_inst *serial;
- struct sr_datafeed_packet packet;
- unsigned char c;
-
- (void)fd;
-
- if (!(sdi = cb_data))
- return TRUE;
-
- if (!(devc = sdi->priv))
- return TRUE;
-
- serial = sdi->conn;
- if (revents == G_IO_IN) {
- if (serial_read_nonblocking(serial, &c, 1) < 0)
- return TRUE;
- devc->packet[devc->packet_size++] = c;
- if (devc->packet_size == PACKET_SIZE) {
- handle_packet(sdi);
- devc->packet_size = 0;
- if (devc->acquisition_running)
- send_config(sdi);
- else {
- serial_source_remove(sdi->session, serial);
- packet.type = SR_DF_END;
- sr_session_send(sdi, &packet);
- }
- }
- }
-
- return TRUE;
-}
-