/* * This file is part of the libsigrok project. * * Copyright (C) 2012 Alexandru Gagniuc * * 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 "protocol.h" static const int32_t hwopts[] = { SR_CONF_CONN, SR_CONF_SERIALCOMM, }; static const int32_t hwcaps[] = { SR_CONF_MULTIMETER, SR_CONF_LIMIT_SAMPLES, SR_CONF_CONTINUOUS, SR_CONF_LIMIT_MSEC, }; SR_PRIV struct sr_dev_driver brymen_bm857_driver_info; static struct sr_dev_driver *di = &brymen_bm857_driver_info; static int init(struct sr_context *sr_ctx) { return std_init(sr_ctx, di, LOG_PREFIX); } static int dev_clear(void) { return std_dev_clear(di, NULL); } static GSList *brymen_scan(const char *conn, const char *serialcomm) { struct sr_dev_inst *sdi; struct dev_context *devc; struct drv_context *drvc; struct sr_probe *probe; struct sr_serial_dev_inst *serial; GSList *devices; int ret; uint8_t buf[128]; size_t len; if (!(serial = sr_serial_dev_inst_new(conn, serialcomm))) return NULL; if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK) return NULL; sr_info("Probing port %s.", conn); devices = NULL; /* Request reading */ if ((ret = brymen_packet_request(serial)) < 0) { sr_err("Unable to send command: %d.", ret); goto scan_cleanup; } len = 128; ret = brymen_stream_detect(serial, buf, &len, brymen_packet_length, brymen_packet_is_valid, 1000, 9600); if (ret != SR_OK) goto scan_cleanup; sr_info("Found device on port %s.", conn); if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Brymen", "BM85x", ""))) goto scan_cleanup; if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { sr_err("Device context malloc failed."); goto scan_cleanup; } sdi->inst_type = SR_INST_SERIAL; sdi->conn = serial; drvc = di->priv; sdi->priv = devc; sdi->driver = di; if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"))) goto scan_cleanup; sdi->probes = g_slist_append(sdi->probes, probe); drvc->instances = g_slist_append(drvc->instances, sdi); devices = g_slist_append(devices, sdi); scan_cleanup: serial_close(serial); return devices; } static GSList *scan(GSList *options) { struct drv_context *drvc; struct sr_config *src; GSList *devices, *l; const char *conn, *serialcomm; devices = NULL; drvc = di->priv; drvc->instances = NULL; conn = serialcomm = NULL; for (l = options; l; l = l->next) { src = l->data; switch (src->key) { case SR_CONF_CONN: conn = g_variant_get_string(src->data, NULL); break; case SR_CONF_SERIALCOMM: serialcomm = g_variant_get_string(src->data, NULL); break; } } if (!conn) return NULL; if (serialcomm) { /* Use the provided comm specs. */ devices = brymen_scan(conn, serialcomm); } else { /* But 9600/8n1 should work all of the time. */ devices = brymen_scan(conn, "9600/8n1/dtr=1/rts=1"); } return devices; } static GSList *dev_list(void) { return ((struct drv_context *)(di->priv))->instances; } static int cleanup(void) { return dev_clear(); } static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, const struct sr_probe_group *probe_group) { struct dev_context *devc; int ret; (void)probe_group; if (sdi->status != SR_ST_ACTIVE) return SR_ERR_DEV_CLOSED; if (!(devc = sdi->priv)) { sr_err("sdi->priv was NULL."); return SR_ERR_BUG; } ret = SR_OK; switch (id) { case SR_CONF_LIMIT_SAMPLES: devc->limit_samples = g_variant_get_uint64(data); break; case SR_CONF_LIMIT_MSEC: devc->limit_msec = g_variant_get_uint64(data); break; default: ret = SR_ERR_NA; } return ret; } static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, const struct sr_probe_group *probe_group) { (void)sdi; (void)probe_group; switch (key) { case SR_CONF_SCAN_OPTIONS: *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t)); break; case SR_CONF_DEVICE_OPTIONS: *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); break; default: return SR_ERR_NA; } return SR_OK; } static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) { struct dev_context *devc; struct sr_serial_dev_inst *serial; if (sdi->status != SR_ST_ACTIVE) return SR_ERR_DEV_CLOSED; if (!(devc = sdi->priv)) { sr_err("sdi->priv was NULL."); return SR_ERR_BUG; } devc->cb_data = cb_data; /* * Reset the number of samples to take. If we've already collected our * quota, but we start a new session, and don't reset this, we'll just * quit without acquiring any new samples. */ devc->num_samples = 0; devc->starttime = g_get_monotonic_time(); /* Send header packet to the session bus. */ std_session_send_df_header(cb_data, LOG_PREFIX); /* Poll every 50ms, or whenever some data comes in. */ serial = sdi->conn; serial_source_add(serial, G_IO_IN, 50, brymen_dmm_receive_data, (void *)sdi); return SR_OK; } static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) { return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close, sdi->conn, LOG_PREFIX); } SR_PRIV struct sr_dev_driver brymen_bm857_driver_info = { .name = "brymen-bm857", .longname = "Brymen BM857", .api_version = 1, .init = init, .cleanup = cleanup, .scan = scan, .dev_list = dev_list, .dev_clear = dev_clear, .config_get = NULL, .config_set = config_set, .config_list = config_list, .dev_open = std_serial_dev_open, .dev_close = std_serial_dev_close, .dev_acquisition_start = dev_acquisition_start, .dev_acquisition_stop = dev_acquisition_stop, .priv = NULL, };