X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Fmic-985xx%2Fprotocol.c;fp=hardware%2Fmic-985xx%2Fprotocol.c;h=0000000000000000000000000000000000000000;hb=155b680da482cea2381becb73c51cfb838bff31e;hp=ce5f0209649e3afc00a4f4f5c6b3accf508ff7a5;hpb=43cd4637285833706f8a404ca027bcf0ee75b9ae;p=libsigrok.git diff --git a/hardware/mic-985xx/protocol.c b/hardware/mic-985xx/protocol.c deleted file mode 100644 index ce5f0209..00000000 --- a/hardware/mic-985xx/protocol.c +++ /dev/null @@ -1,234 +0,0 @@ -/* - * This file is part of the libsigrok project. - * - * Copyright (C) 2013 Uwe Hermann - * - * 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 "protocol.h" - -static int mic_send(struct sr_serial_dev_inst *serial, const char *cmd) -{ - int ret; - - if ((ret = serial_write(serial, cmd, strlen(cmd))) < 0) { - sr_err("Error sending '%s' command: %d.", cmd, ret); - return SR_ERR; - } - - return SR_OK; -} - -SR_PRIV int mic_cmd_get_device_info(struct sr_serial_dev_inst *serial) -{ - return mic_send(serial, "I\r"); -} - -static int mic_cmd_set_realtime_mode(struct sr_serial_dev_inst *serial) -{ - return mic_send(serial, "S 1 M 2 32 3\r"); -} - -SR_PRIV gboolean packet_valid_temp(const uint8_t *buf) -{ - if (buf[0] != 'v' || buf[1] != ' ' || buf[5] != '\r') - return FALSE; - - if (!isdigit(buf[2]) || !isdigit(buf[3]) || !isdigit(buf[4])) - return FALSE; - - return TRUE; -} - -SR_PRIV gboolean packet_valid_temp_hum(const uint8_t *buf) -{ - if (buf[0] != 'v' || buf[1] != ' ' || buf[5] != ' ' || buf[9] != '\r') - return FALSE; - - if (!isdigit(buf[2]) || !isdigit(buf[3]) || !isdigit(buf[4])) - return FALSE; - - if (!isdigit(buf[6]) || !isdigit(buf[7]) || !isdigit(buf[8])) - return FALSE; - - return TRUE; -} - -static int packet_parse(const char *buf, int idx, float *temp, float *humidity) -{ - char tmp[4]; - - /* Packet format MIC98581: "v ttt\r". */ - /* Packet format MIC98583: "v ttt hhh\r". */ - - /* TODO: Sanity check on buf. For now we assume well-formed ASCII. */ - - tmp[3] = '\0'; - - strncpy((char *)&tmp, &buf[2], 3); - *temp = g_ascii_strtoull((const char *)&tmp, NULL, 10) / 10; - - if (mic_devs[idx].has_humidity) { - strncpy((char *)&tmp, &buf[6], 3); - *humidity = g_ascii_strtoull((const char *)&tmp, NULL, 10) / 10; - } - - return SR_OK; -} - -static int handle_packet(const uint8_t *buf, struct sr_dev_inst *sdi, int idx) -{ - float temperature, humidity; - struct sr_datafeed_packet packet; - struct sr_datafeed_analog analog; - struct dev_context *devc; - GSList *l; - int ret; - - (void)idx; - - devc = sdi->priv; - - ret = packet_parse((const char *)buf, idx, &temperature, &humidity); - if (ret < 0) { - sr_err("Failed to parse packet."); - return SR_ERR; - } - - /* Clear 'analog', otherwise it'll contain random garbage. */ - memset(&analog, 0, sizeof(struct sr_datafeed_analog)); - - /* Common values for both channels. */ - packet.type = SR_DF_ANALOG; - packet.payload = &analog; - analog.num_samples = 1; - - /* Temperature. */ - l = g_slist_copy(sdi->channels); - l = g_slist_remove_link(l, g_slist_nth(l, 1)); - analog.channels = l; - analog.mq = SR_MQ_TEMPERATURE; - analog.unit = SR_UNIT_CELSIUS; /* TODO: Use C/F correctly. */ - analog.data = &temperature; - sr_session_send(devc->cb_data, &packet); - g_slist_free(l); - - /* Humidity. */ - if (mic_devs[idx].has_humidity) { - l = g_slist_copy(sdi->channels); - l = g_slist_remove_link(l, g_slist_nth(l, 0)); - analog.channels = l; - analog.mq = SR_MQ_RELATIVE_HUMIDITY; - analog.unit = SR_UNIT_PERCENTAGE; - analog.data = &humidity; - sr_session_send(devc->cb_data, &packet); - g_slist_free(l); - } - - devc->num_samples++; - - return SR_OK; -} - -static void handle_new_data(struct sr_dev_inst *sdi, int idx) -{ - struct dev_context *devc; - struct sr_serial_dev_inst *serial; - int len, i, offset = 0; - - devc = sdi->priv; - serial = sdi->conn; - - /* Try to get as much data as the buffer can hold. */ - len = SERIAL_BUFSIZE - devc->buflen; - len = serial_read(serial, devc->buf + devc->buflen, len); - if (len < 1) { - sr_err("Serial port read error: %d.", len); - return; - } - - devc->buflen += len; - - /* Now look for packets in that data. */ - while ((devc->buflen - offset) >= mic_devs[idx].packet_size) { - if (mic_devs[idx].packet_valid(devc->buf + offset)) { - handle_packet(devc->buf + offset, sdi, idx); - offset += mic_devs[idx].packet_size; - } else { - offset++; - } - } - - /* If we have any data left, move it to the beginning of our buffer. */ - for (i = 0; i < devc->buflen - offset; i++) - devc->buf[i] = devc->buf[offset + i]; - devc->buflen -= offset; -} - -static int receive_data(int fd, int revents, int idx, void *cb_data) -{ - struct sr_dev_inst *sdi; - struct dev_context *devc; - int64_t t; - static gboolean first_time = TRUE; - struct sr_serial_dev_inst *serial; - - (void)fd; - - if (!(sdi = cb_data)) - return TRUE; - - if (!(devc = sdi->priv)) - return TRUE; - - serial = sdi->conn; - - if (revents == G_IO_IN) { - /* New data arrived. */ - handle_new_data(sdi, idx); - } else { - /* Timeout. */ - if (first_time) { - mic_cmd_set_realtime_mode(serial); - first_time = FALSE; - } - } - - if (devc->limit_samples && devc->num_samples >= devc->limit_samples) { - sr_info("Requested number of samples reached."); - sdi->driver->dev_acquisition_stop(sdi, cb_data); - return TRUE; - } - - if (devc->limit_msec) { - t = (g_get_monotonic_time() - devc->starttime) / 1000; - if (t > (int64_t)devc->limit_msec) { - sr_info("Requested time limit reached."); - sdi->driver->dev_acquisition_stop(sdi, cb_data); - return TRUE; - } - } - - return TRUE; -} - -#define RECEIVE_DATA(ID_UPPER) \ -SR_PRIV int receive_data_##ID_UPPER(int fd, int revents, void *cb_data) { \ - return receive_data(fd, revents, ID_UPPER, cb_data); } - -/* Driver-specific receive_data() wrappers */ -RECEIVE_DATA(MIC_98581) -RECEIVE_DATA(MIC_98583)