+++ /dev/null
-/*
- * This file is part of the sigrok project.
- *
- * Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de>
- *
- * 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 2 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, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include <fcntl.h>
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
-
-#define MIN_NUM_SAMPLES 1
-
-struct context {
- uint64_t limit_samples;
- uint64_t limit_msec; /* TODO: Implement. */
- uint64_t num_samples;
- void *session_dev_id;
- struct sr_serial_dev_inst *serial;
- uint8_t bytes[14 + 1];
- int byte_counter;
- gboolean synchronized;
- gboolean got_14_bytes;
-};
-
-static const int hwcaps[] = {
- SR_HWCAP_OSCILLOSCOPE,
- SR_HWCAP_LIMIT_SAMPLES,
- // SR_HWCAP_LIMIT_MSEC,
- // SR_HWCAP_CONTINUOUS,
- 0,
-};
-
-static const char *probe_names[] = {
- "Probe",
- NULL,
-};
-
-static GSList *dev_insts = NULL;
-
-/* Function prototypes. */
-static int hw_dev_acquisition_stop(int dev_index, void *cb_data);
-
-static int hw_init(const char *devinfo)
-{
- struct sr_dev_inst *sdi;
- struct context *ctx;
- int devcnt = 0;
-
- /* Avoid compiler warnings. */
- (void)devinfo; /* TODO: This specifies the serial port to use. */
-
- if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
- sr_err("va18b: %s: ctx malloc failed.", __func__);
- return 0;
- }
-
- ctx->limit_samples = 0;
- ctx->limit_msec = 0;
- ctx->num_samples = 0;
- ctx->session_dev_id = NULL;
- ctx->serial = NULL;
- memset(ctx->bytes, 0x00, 14 + 1);
- ctx->byte_counter = 0;
- ctx->synchronized = FALSE;
- ctx->got_14_bytes = FALSE;
-
- if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_ACTIVE,
- "Mastech", "VA18B", ""))) {
- sr_err("va18b: %s: sr_dev_inst_new returned NULL.", __func__);
- return 0;
- }
-
- sdi->priv = ctx;
-
- /* TODO: Don't hardcode serial port. */
- ctx->serial = sr_serial_dev_inst_new("/dev/ttyUSB0", -1);
-
- dev_insts = g_slist_append(dev_insts, sdi);
-
- devcnt = 1;
-
- return devcnt;
-}
-
-static int hw_dev_open(int dev_index)
-{
- struct sr_dev_inst *sdi;
- struct context *ctx;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
- sr_err("va18b: %s: sdi was NULL.", __func__);
- return SR_ERR_BUG;
- }
-
- if (!(ctx = sdi->priv)) {
- sr_err("va18b: %s: sdi->priv was NULL.", __func__);
- return SR_ERR_BUG;
- }
-
- sr_dbg("va18b: %s: Opening serial port '%s'.", __func__,
- ctx->serial->port);
-
- /* TODO: Check for != NULL. */
-
- /* TODO: O_NONBLOCK? */
- ctx->serial->fd = serial_open(ctx->serial->port, O_RDWR | O_NONBLOCK);
- if (ctx->serial->fd == -1) {
- sr_err("va18b: %s: Couldn't open serial port '%s'.", __func__,
- ctx->serial->port);
- return SR_ERR;
- }
-
- serial_set_params(ctx->serial->fd, 2400, 8, 0, 1, 2 /* TODO */);
-
- return SR_OK;
-}
-
-static int hw_dev_close(int dev_index)
-{
- struct sr_dev_inst *sdi;
- struct context *ctx;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
- sr_err("va18b: %s: sdi was NULL.", __func__);
- return SR_ERR_BUG;
- }
-
- if (!(ctx = sdi->priv)) {
- sr_err("va18b: %s: sdi->priv was NULL.", __func__);
- return SR_ERR_BUG;
- }
-
- /* TODO: Check for != NULL. */
-
- if (ctx->serial->fd != -1) {
- serial_close(ctx->serial->fd);
- ctx->serial->fd = -1;
- sdi->status = SR_ST_INACTIVE;
- }
-
- return SR_OK;
-}
-
-static int hw_cleanup(void)
-{
- GSList *l;
- struct sr_dev_inst *sdi;
- struct context *ctx;
-
- /* Properly close and free all devices. */
- for (l = dev_insts; l; l = l->next) {
- if (!(sdi = l->data)) {
- /* Log error, but continue cleaning up the rest. */
- sr_err("va18b: %s: sdi was NULL, continuing.",
- __func__);
- continue;
- }
- if (!(ctx = sdi->priv)) {
- /* Log error, but continue cleaning up the rest. */
- sr_err("va18b: %s: sdi->priv was NULL, continuing.",
- __func__);
- continue;
- }
-
- /* TODO: Check for serial != NULL. */
- if (ctx->serial->fd != -1)
- serial_close(ctx->serial->fd);
- sr_serial_dev_inst_free(ctx->serial);
-
- sr_dev_inst_free(sdi);
- }
-
- g_slist_free(dev_insts);
- dev_insts = NULL;
-
- return SR_OK;
-}
-
-static const void *hw_dev_info_get(int dev_index, int dev_info_id)
-{
- struct sr_dev_inst *sdi;
- struct context *ctx;
- const void *info;
- uint64_t tmp;
- int tmpint;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
- sr_err("va18b: %s: sdi was NULL.", __func__);
- return NULL;
- }
-
- if (!(ctx = sdi->priv)) {
- sr_err("va18b: %s: sdi->priv was NULL.", __func__);
- return NULL;
- }
-
- sr_spew("va18b: %s: dev_index %d, dev_info_id %d.", __func__,
- dev_index, dev_info_id);
-
- switch (dev_info_id) {
- case SR_DI_INST:
- info = sdi;
- sr_spew("va18b: %s: Returning sdi.", __func__);
- break;
- case SR_DI_NUM_PROBES:
- tmpint = 1;
- info = (int *)tmpint;
- sr_spew("va18b: %s: Returning number of probes: 1.", __func__);
- break;
- case SR_DI_PROBE_NAMES:
- info = probe_names;
- sr_spew("va18b: %s: Returning probenames.", __func__);
- break;
- case SR_DI_CUR_SAMPLERATE:
- /* FIXME */
- tmp = 1;
- info = (uint64_t *)&tmp;
- sr_spew("va18b: %s: Returning samplerate: %" PRIu64 "Hz.",
- __func__, tmp);
- break;
- default:
- /* Unknown device info ID, return NULL. */
- sr_err("va18b: %s: Unknown device info ID: %d.",
- __func__, dev_info_id);
- info = NULL;
- break;
- }
-
- return info;
-}
-
-static int hw_dev_status_get(int dev_index)
-{
- struct sr_dev_inst *sdi;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
- sr_err("va18b: %s: sdi was NULL, device not found.", __func__);
- return SR_ST_NOT_FOUND;
- }
-
- sr_dbg("va18b: Returning status: %d.", sdi->status);
-
- return sdi->status;
-}
-
-static const int *hw_hwcap_get_all(void)
-{
- sr_spew("va18b: Returning list of device capabilities.");
-
- return hwcaps;
-}
-
-static int hw_dev_config_set(int dev_index, int hwcap, const void *value)
-{
- struct sr_dev_inst *sdi;
- struct context *ctx;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
- sr_err("va18b: %s: sdi was NULL.", __func__);
- return SR_ERR_BUG;
- }
-
- if (!(ctx = sdi->priv)) {
- sr_err("va18b: %s: sdi->priv was NULL.", __func__);
- return SR_ERR_BUG;
- }
-
- sr_spew("va18b: %s: dev_index %d, hwcap %d.", __func__,
- dev_index, hwcap);
-
- switch (hwcap) {
- case SR_HWCAP_PROBECONFIG:
- /* TODO: Required? */
- break;
- case SR_HWCAP_LIMIT_MSEC:
- if (*(const uint64_t *)value == 0) {
- sr_err("va18b: %s: LIMIT_MSEC can't be 0.", __func__);
- return SR_ERR;
- }
- ctx->limit_msec = *(const uint64_t *)value;
- sr_dbg("va18b: Setting LIMIT_MSEC to %" PRIu64 ".",
- ctx->limit_msec);
- break;
- case SR_HWCAP_LIMIT_SAMPLES:
- if (*(const uint64_t *)value < MIN_NUM_SAMPLES) {
- sr_err("va18b: %s: LIMIT_SAMPLES too small.", __func__);
- return SR_ERR;
- }
- ctx->limit_samples = *(const uint64_t *)value;
- sr_dbg("va18b: Setting LIMIT_SAMPLES to %" PRIu64 ".",
- ctx->limit_samples);
- break;
- default:
- /* Unknown capability, return SR_ERR. */
- sr_err("va18b: %s: Unknown capability: %d.", __func__, hwcap);
- return SR_ERR;
- break;
- }
-
- return SR_OK;
-}
-
-static uint8_t get_digit(uint8_t b1, uint8_t b2)
-{
- uint8_t b;
-
- b = ((b1 & 0x0f) << 4) | (b2 & 0x0f);
- printf("0x%02x (b1: 0x%02x, b2: 0x%02x)\n", b, b1, b2);
-
- if (b == 0x7d) {
- printf("ret = 8\n");
- return 0;
- }
- else if (b == 0x05)
- return 1;
- else if (b == 0x5b)
- return 2;
- else if (b == 0x1f)
- return 3;
- else if (b == 0x27)
- return 4;
- else if (b == 0x3e)
- return 5;
- else if (b == 0x7e)
- return 6;
- else if (b == 0x15)
- return 7;
- else if (b == 0x7f)
- return 8;
- else if (b == 0x3f)
- return 9;
- else
- return 0xff; /* Error */
-
-}
-
-static int receive_data(int fd, int revents, void *cb_data)
-{
- struct sr_dev_inst *sdi;
- struct sr_datafeed_packet packet;
- struct sr_datafeed_analog analog;
- struct context *ctx;
- int num_probes;
- uint8_t b, left_nibble, right_nibble;
-
- if (!(sdi = cb_data)) {
- sr_err("va18b: %s: cb_data was NULL.", __func__);
- return FALSE;
- }
-
- if (!(ctx = sdi->priv)) {
- sr_err("va18b: %s: sdi->priv was NULL.", __func__);
- return FALSE;
- }
-
- if (revents != G_IO_IN) {
- sr_err("va18b: %s: No data?", __func__);
- return FALSE;
- }
-
- if (serial_read(fd, &b, 1) != 1) {
- sr_err("va18b: %s: Could not read a byte from serial port.",
- __func__);
- return FALSE;
- }
-
- left_nibble = ((b & 0xf0) >> 4);
-
- /* Upon starting, we wait until we're at byte 1. */
- if (ctx->synchronized == FALSE && left_nibble != 1) {
- sr_spew("va18b: Waiting for byte #1 in order to synchronize "
- "(got byte #%d).", left_nibble);
- return TRUE; // FALSE?
- } else if (ctx->synchronized == FALSE && left_nibble == 1) {
- sr_dbg("va18b: Successfully synchronized to data stream.");
- ctx->synchronized = TRUE;
- ctx->byte_counter = 1;
- }
-
- /* TODO: Check for left_nibble in (1, 14). */
-
- ctx->bytes[ctx->byte_counter++] = b;
-
- /// sr_dbg("va18b: bc: %d", ctx->byte_counter);
- if (ctx->byte_counter == 14 + 1) {
- sr_dbg("va18b: Received all 14 bytes for this packet.");
- ctx->got_14_bytes = TRUE;
- } else {
- sr_spew("va18b: Didn't receive all 14 bytes, yet.");
- return TRUE; // FALSE?
- }
-
- printf("0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x "
- "0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x\n",
- ctx->bytes[1], ctx->bytes[2], ctx->bytes[3], ctx->bytes[4],
- ctx->bytes[5], ctx->bytes[6], ctx->bytes[7], ctx->bytes[8],
- ctx->bytes[9], ctx->bytes[10], ctx->bytes[11], ctx->bytes[12],
- ctx->bytes[13], ctx->bytes[14]);
-
- printf("0x%02x %d %d %d\n",
- get_digit(ctx->bytes[2], ctx->bytes[3]),
- get_digit(ctx->bytes[4], ctx->bytes[5]),
- get_digit(ctx->bytes[6], ctx->bytes[7]),
- get_digit(ctx->bytes[8], ctx->bytes[9]));
-
- ctx->got_14_bytes = FALSE;
- ctx->byte_counter = 0;
-
- sr_dbg("va18b: Sending SR_DF_ANALOG packet with 1 sample.");
- /* TODO: timestamp. */
- num_probes = 1;
- packet.type = SR_DF_ANALOG;
- packet.payload = &analog;
- analog.num_samples = 1;
- analog.mq = SR_MQ_VOLTAGE;
- analog.unit = SR_UNIT_VOLT;
- /* TODO: Check alloc return value. */
- analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes);
- // analog.data[0] = rand() % 42; /* Transmit dummy data for now. */
- analog.data[0] = b; /* Transmit dummy data for now. */
- sr_session_send(ctx->session_dev_id, &packet);
-
- ctx->num_samples++;
-
- /* Support for SR_HWCAP_LIMIT_SAMPLES. */
- if (ctx->limit_samples > 0 && ctx->num_samples > ctx->limit_samples) {
- hw_dev_acquisition_stop(0 /* FIXME? */, cb_data);
- return FALSE;
- }
-
- return TRUE;
-}
-
-static int hw_dev_acquisition_start(int dev_index, void *cb_data)
-{
- struct sr_datafeed_packet packet;
- struct sr_datafeed_header header;
- struct sr_datafeed_meta_analog meta;
- struct sr_dev_inst *sdi;
- struct context *ctx;
-
- if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
- sr_err("va18b: %s: sdi was NULL.", __func__);
- return SR_ERR_BUG;
- }
-
- if (!(ctx = sdi->priv)) {
- sr_err("va18b: %s: sdi->priv was NULL.", __func__);
- return SR_ERR_BUG;
- }
-
- sr_dbg("va18b: Starting acquisition.");
-
- ctx->session_dev_id = cb_data;
-
- /* Send header packet to the session bus. */
- sr_dbg("va18b: Sending SR_DF_HEADER.");
- packet.type = SR_DF_HEADER;
- packet.payload = (uint8_t *)&header;
- header.feed_version = 1;
- gettimeofday(&header.starttime, NULL);
- sr_session_send(ctx->session_dev_id, &packet);
-
- /* Send metadata about the SR_DF_ANALOG packets to come. */
- sr_dbg("va18b: Sending SR_DF_META_ANALOG.");
- packet.type = SR_DF_META_ANALOG;
- packet.payload = &meta;
- meta.num_probes = 1;
- sr_session_send(ctx->session_dev_id, &packet);
-
- /* Hook up a dummy handler to receive data from the device. */
- // sr_source_add(-1, G_IO_IN, 0, receive_data, sdi);
- sr_source_add(ctx->serial->fd, G_IO_IN, -1, receive_data, sdi);
-
- return SR_OK;
-}
-
-static int hw_dev_acquisition_stop(int dev_index, void *cb_data)
-{
- struct sr_datafeed_packet packet;
-
- /* Avoid compiler warnings. */
- (void)dev_index;
-
- sr_dbg("va18b: Stopping acquisition.");
-
- /* Send end packet to the session bus. */
- sr_dbg("va18b: Sending SR_DF_END.");
- packet.type = SR_DF_END;
- sr_session_send(cb_data, &packet);
-
- return SR_OK;
-}
-
-SR_PRIV struct sr_dev_driver mastech_va18b_driver_info = {
- .name = "mastech-va18b",
- .longname = "Mastech VA18B",
- .api_version = 1,
- .init = hw_init,
- .cleanup = hw_cleanup,
- .dev_open = hw_dev_open,
- .dev_close = hw_dev_close,
- .dev_info_get = hw_dev_info_get,
- .dev_status_get = hw_dev_status_get,
- .hwcap_get_all = hw_hwcap_get_all,
- .dev_config_set = hw_dev_config_set,
- .dev_acquisition_start = hw_dev_acquisition_start,
- .dev_acquisition_stop = hw_dev_acquisition_stop,
-};
projects / libsigrok.git / commitdiff