X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Fagilent-dmm%2Fapi.c;h=c7783bca399fb7387f3f825972b3eb178c21c13b;hb=19ee7dff78f7195bfc82f14ef659751cdd0f6476;hp=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hpb=6ac0db19f36ada4cfccf19bbd48ebdb4665bc9ff;p=libsigrok.git diff --git a/hardware/agilent-dmm/api.c b/hardware/agilent-dmm/api.c index e69de29b..c7783bca 100644 --- a/hardware/agilent-dmm/api.c +++ b/hardware/agilent-dmm/api.c @@ -0,0 +1,399 @@ +/* + * This file is part of the sigrok project. + * + * Copyright (C) 2012 Bert Vermeulen + * + * 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 . + */ + +#include +#include +#include +#include +#include +#include +#include "libsigrok.h" +#include "libsigrok-internal.h" +#include "agilent-dmm.h" + +static const int hwopts[] = { + SR_HWOPT_CONN, + SR_HWOPT_SERIALCOMM, + 0, +}; + +static const int hwcaps[] = { + SR_HWCAP_MULTIMETER, + SR_HWCAP_LIMIT_SAMPLES, + SR_HWCAP_LIMIT_MSEC, + SR_HWCAP_CONTINUOUS, + 0, +}; + +static const char *probe_names[] = { + "Probe", + NULL, +}; + +extern const struct agdmm_job agdmm_jobs_u123x[]; +extern const struct agdmm_recv agdmm_recvs_u123x[]; +extern const struct agdmm_job agdmm_jobs_u125x[]; +extern const struct agdmm_recv agdmm_recvs_u125x[]; + +/* This works on all the Agilent U12xxA series, although the + * U127xA can apparently also run at 19200/8n1. */ +#define SERIALCOMM "9600/8n1" + +static const struct agdmm_profile supported_agdmm[] = { + { AGILENT_U1231A, "U1231A", agdmm_jobs_u123x, agdmm_recvs_u123x }, + { AGILENT_U1232A, "U1232A", agdmm_jobs_u123x, agdmm_recvs_u123x }, + { AGILENT_U1233A, "U1233A", agdmm_jobs_u123x, agdmm_recvs_u123x }, + { AGILENT_U1251A, "U1251A", agdmm_jobs_u125x, agdmm_recvs_u125x }, + { AGILENT_U1252A, "U1252A", agdmm_jobs_u125x, agdmm_recvs_u125x }, + { AGILENT_U1253A, "U1253A", agdmm_jobs_u125x, agdmm_recvs_u125x }, + { 0, NULL, NULL, NULL } +}; + +SR_PRIV struct sr_dev_driver agdmm_driver_info; +static struct sr_dev_driver *di = &agdmm_driver_info; + +/* Properly close and free all devices. */ +static int clear_instances(void) +{ + struct sr_dev_inst *sdi; + struct drv_context *drvc; + struct dev_context *devc; + GSList *l; + + if (!(drvc = di->priv)) + return SR_OK; + + drvc = di->priv; + for (l = drvc->instances; l; l = l->next) { + if (!(sdi = l->data)) + continue; + if (!(devc = sdi->priv)) + continue; + sr_serial_dev_inst_free(devc->serial); + sr_dev_inst_free(sdi); + } + g_slist_free(drvc->instances); + drvc->instances = NULL; + + return SR_OK; +} + +static int hw_init(void) +{ + struct drv_context *drvc; + + if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { + sr_err("Driver context malloc failed."); + return SR_ERR_MALLOC; + } + + di->priv = drvc; + + return SR_OK; +} + +static GSList *hw_scan(GSList *options) +{ + struct sr_dev_inst *sdi; + struct drv_context *drvc; + struct dev_context *devc; + struct sr_hwopt *opt; + struct sr_probe *probe; + struct sr_serial_dev_inst *serial; + GSList *l, *devices; + int len, i; + const char *conn, *serialcomm; + char *buf, **tokens; + + drvc = di->priv; + drvc->instances = NULL; + + devices = NULL; + conn = serialcomm = NULL; + for (l = options; l; l = l->next) { + opt = l->data; + switch (opt->hwopt) { + case SR_HWOPT_CONN: + conn = opt->value; + break; + case SR_HWOPT_SERIALCOMM: + serialcomm = opt->value; + break; + } + } + if (!conn) + return NULL; + if (!serialcomm) + serialcomm = SERIALCOMM; + + if (!(serial = sr_serial_dev_inst_new(conn, serialcomm))) + return NULL; + + if (serial_open(serial, O_RDWR|O_NONBLOCK) != SR_OK) + return NULL; + + serial_flush(serial); + if (serial_write(serial, "*IDN?\r\n", 7) == -1) { + sr_err("Unable to send identification string: %s.", + strerror(errno)); + return NULL; + } + + len = 128; + if (!(buf = g_try_malloc(len))) { + sr_err("Serial buffer malloc failed."); + return NULL; + } + serial_readline(serial, &buf, &len, 150); + if (!len) + return NULL; + + tokens = g_strsplit(buf, ",", 4); + if (!strcmp("Agilent Technologies", tokens[0]) + && tokens[2] && tokens[3]) { + for (i = 0; supported_agdmm[i].model; i++) { + if (strcmp(supported_agdmm[i].modelname, tokens[1])) + continue; + if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, tokens[0], + tokens[1], tokens[3]))) + return NULL; + if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { + sr_err("Device context malloc failed."); + return NULL; + } + devc->profile = &supported_agdmm[i]; + devc->serial = serial; + devc->cur_mq = -1; + sdi->priv = devc; + sdi->driver = di; + if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"))) + return NULL; + sdi->probes = g_slist_append(sdi->probes, probe); + drvc->instances = g_slist_append(drvc->instances, sdi); + devices = g_slist_append(devices, sdi); + break; + } + } + g_strfreev(tokens); + g_free(buf); + + serial_close(serial); + if (!devices) + sr_serial_dev_inst_free(serial); + + return devices; +} + +static GSList *hw_dev_list(void) +{ + struct drv_context *drvc; + + drvc = di->priv; + + return drvc->instances; +} + +static int hw_dev_open(struct sr_dev_inst *sdi) +{ + struct dev_context *devc; + + if (!(devc = sdi->priv)) { + sr_err("sdi->priv was NULL."); + return SR_ERR_BUG; + } + + if (serial_open(devc->serial, O_RDWR|O_NONBLOCK) != SR_OK) + return SR_ERR; + + sdi->status = SR_ST_ACTIVE; + + return SR_OK; +} + +static int hw_dev_close(struct sr_dev_inst *sdi) +{ + struct dev_context *devc; + + if (!(devc = sdi->priv)) { + sr_err("sdi->priv was NULL."); + return SR_ERR_BUG; + } + + if (devc->serial && devc->serial->fd != -1) { + serial_close(devc->serial); + sdi->status = SR_ST_INACTIVE; + } + + return SR_OK; +} + +static int hw_cleanup(void) +{ + + clear_instances(); + + return SR_OK; +} + +static int hw_info_get(int info_id, const void **data, + const struct sr_dev_inst *sdi) +{ + + (void)sdi; + + switch (info_id) { + case SR_DI_HWOPTS: + *data = hwopts; + break; + case SR_DI_HWCAPS: + *data = hwcaps; + break; + case SR_DI_NUM_PROBES: + *data = GINT_TO_POINTER(1); + break; + case SR_DI_PROBE_NAMES: + *data = probe_names; + break; + default: + return SR_ERR_ARG; + } + + return SR_OK; +} + +static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, + const void *value) +{ + struct dev_context *devc; + + if (sdi->status != SR_ST_ACTIVE) + return SR_ERR; + + if (!(devc = sdi->priv)) { + sr_err("sdi->priv was NULL."); + return SR_ERR_BUG; + } + + switch (hwcap) { + case SR_HWCAP_LIMIT_MSEC: + /* TODO: not yet implemented */ + if (*(const uint64_t *)value == 0) { + sr_err("LIMIT_MSEC can't be 0."); + return SR_ERR; + } + devc->limit_msec = *(const uint64_t *)value; + sr_dbg("Setting time limit to %" PRIu64 "ms.", + devc->limit_msec); + break; + case SR_HWCAP_LIMIT_SAMPLES: + devc->limit_samples = *(const uint64_t *)value; + sr_dbg("Setting sample limit to %" PRIu64 ".", + devc->limit_samples); + break; + default: + sr_err("Unknown capability: %d.", hwcap); + return SR_ERR; + break; + } + + return SR_OK; +} + +static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, + void *cb_data) +{ + struct sr_datafeed_packet packet; + struct sr_datafeed_header header; + struct sr_datafeed_meta_analog meta; + struct dev_context *devc; + + if (!(devc = sdi->priv)) { + sr_err("sdi->priv was NULL."); + return SR_ERR_BUG; + } + + sr_dbg("Starting acquisition."); + + devc->cb_data = cb_data; + + /* Send header packet to the session bus. */ + sr_dbg("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(devc->cb_data, &packet); + + /* Send metadata about the SR_DF_ANALOG packets to come. */ + sr_dbg("Sending SR_DF_META_ANALOG."); + packet.type = SR_DF_META_ANALOG; + packet.payload = &meta; + meta.num_probes = 1; + sr_session_send(devc->cb_data, &packet); + + /* Poll every 100ms, or whenever some data comes in. */ + sr_source_add(devc->serial->fd, G_IO_IN, 100, agdmm_receive_data, (void *)sdi); + + return SR_OK; +} + +static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) +{ + struct sr_datafeed_packet packet; + struct dev_context *devc; + + if (sdi->status != SR_ST_ACTIVE) + return SR_ERR; + + if (!(devc = sdi->priv)) { + sr_err("sdi->priv was NULL."); + return SR_ERR_BUG; + } + + sr_dbg("Stopping acquisition."); + + sr_source_remove(devc->serial->fd); + hw_dev_close((struct sr_dev_inst *)sdi); + + /* Send end packet to the session bus. */ + sr_dbg("Sending SR_DF_END."); + packet.type = SR_DF_END; + sr_session_send(cb_data, &packet); + + + return SR_OK; +} + +SR_PRIV struct sr_dev_driver agdmm_driver_info = { + .name = "agilent-dmm", + .longname = "Agilent U12xx series DMMs", + .api_version = 1, + .init = hw_init, + .cleanup = hw_cleanup, + .scan = hw_scan, + .dev_list = hw_dev_list, + .dev_clear = clear_instances, + .dev_open = hw_dev_open, + .dev_close = hw_dev_close, + .info_get = hw_info_get, + .dev_config_set = hw_dev_config_set, + .dev_acquisition_start = hw_dev_acquisition_start, + .dev_acquisition_stop = hw_dev_acquisition_stop, + .priv = NULL, +};