X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=hardware%2Ftondaj-sl-814%2Fprotocol.c;h=4daf5af5abdd4ca3056ae478f6214c53f6a47a14;hb=HEAD;hp=b97219ac763016880aceab53f04526efb2f42526;hpb=50985c2019b2b5a6ce394589d89ee925b4f5e3a9;p=libsigrok.git diff --git a/hardware/tondaj-sl-814/protocol.c b/hardware/tondaj-sl-814/protocol.c deleted file mode 100644 index b97219ac..00000000 --- a/hardware/tondaj-sl-814/protocol.c +++ /dev/null @@ -1,206 +0,0 @@ -/* - * This file is part of the libsigrok project. - * - * Copyright (C) 2012 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 -#include -#include "libsigrok.h" -#include "libsigrok-internal.h" -#include "protocol.h" - -/* States */ -enum { - SEND_INIT, - GET_INIT_REPLY, - SEND_PACKET_REQUEST, - GET_PACKET, -}; - -static void parse_packet(const uint8_t *buf, float *floatval, - struct sr_datafeed_analog *analog) -{ - gboolean is_a, is_fast; - uint16_t intval; - uint8_t level = 0, level_bits; - - /* Byte 0 [7:7]: 0 = A, 1 = C */ - is_a = ((buf[0] & (1 << 7)) == 0); - - /* Byte 0 [6:6]: Unknown/unused? */ - - /* Byte 0 [5:4]: Level (00 = 40, 01 = 60, 10 = 80, 11 = 100) */ - level_bits = (buf[0] >> 4) & 0x03; - if (level_bits == 0) - level = 40; - else if (level_bits == 1) - level = 60; - else if (level_bits == 2) - level = 80; - else if (level_bits == 3) - level = 100; - - /* Byte 0 [3:3]: 0 = fast, 1 = slow */ - is_fast = ((buf[0] & (1 << 3)) == 0); - - /* Byte 0 [2:0]: value[10..8] */ - /* Byte 1 [7:0]: value[7..0] */ - intval = (buf[0] & 0x7) << 8; - intval |= buf[1]; - - *floatval = (float)intval; - - /* The value on the display always has one digit after the comma. */ - *floatval /= 10; - - analog->mq = SR_MQ_SOUND_PRESSURE_LEVEL; - analog->unit = SR_UNIT_DECIBEL_SPL; - - if (is_a) - analog->mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_A; - else - analog->mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_C; - - if (is_fast) - analog->mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_F; - else - analog->mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_S; - - /* TODO: How to handle level? */ - (void)level; -} - -static void decode_packet(struct sr_dev_inst *sdi) -{ - struct sr_datafeed_packet packet; - struct sr_datafeed_analog analog; - struct dev_context *devc; - float floatval; - - devc = sdi->priv; - memset(&analog, 0, sizeof(struct sr_datafeed_analog)); - - parse_packet(devc->buf, &floatval, &analog); - - /* Send a sample packet with one analog value. */ - analog.probes = sdi->probes; - analog.num_samples = 1; - analog.data = &floatval; - packet.type = SR_DF_ANALOG; - packet.payload = &analog; - sr_session_send(devc->cb_data, &packet); - - devc->num_samples++; -} - -int tondaj_sl_814_receive_data(int fd, int revents, void *cb_data) -{ - struct sr_dev_inst *sdi; - struct dev_context *devc; - uint8_t buf[3]; - int ret; - - (void)fd; - (void)revents; - - sdi = cb_data; - devc = sdi->priv; - - /* TODO: Parts of this code need to be improved later. */ - - /* State machine. */ - if (devc->state == SEND_INIT) { - /* On the first run, send the "init" command. */ - buf[0] = 0x10; - buf[1] = 0x04; - buf[2] = 0x0d; - sr_spew("Sending init command: %02x %02x %02x.", - buf[0], buf[1], buf[2]); - if ((ret = serial_write(devc->serial, buf, 3)) < 0) { - sr_err("Error sending init command: %d.", ret); - return FALSE; - } - devc->state = GET_INIT_REPLY; - } else if (devc->state == GET_INIT_REPLY) { - /* If we just sent the "init" command, get its reply. */ - if ((ret = serial_read(devc->serial, buf, 2)) < 0) { - sr_err("Error reading init reply: %d.", ret); - return FALSE; - } - sr_spew("Received init reply: %02x %02x.", buf[0], buf[1]); - /* Expected reply: 0x05 0x0d */ - if (buf[0] != 0x05 || buf[1] != 0x0d) { - sr_err("Received incorrect init reply, retrying."); - devc->state = SEND_INIT; - return TRUE; - } - devc->state = SEND_PACKET_REQUEST; - } else if (devc->state == SEND_PACKET_REQUEST) { - /* Request a packet (send 0x30 ZZ 0x0d). */ - buf[0] = 0x30; - buf[1] = 0x00; /* ZZ */ - buf[2] = 0x0d; - sr_spew("Sending data request command: %02x %02x %02x.", - buf[0], buf[1], buf[2]); - if ((ret = serial_write(devc->serial, buf, 3)) < 0) { - sr_err("Error sending request command: %d.", ret); - return FALSE; - } - devc->buflen = 0; - devc->state = GET_PACKET; - } else if (devc->state == GET_PACKET) { - /* Read a packet from the device. */ - ret = serial_read(devc->serial, devc->buf + devc->buflen, - 4 - devc->buflen); - if (ret < 0) { - sr_err("Error reading packet: %d.", ret); - return TRUE; - } - - devc->buflen += ret; - - /* Didn't receive all 4 bytes, yet. */ - if (devc->buflen != 4) - return TRUE; - - sr_spew("Received packet: %02x %02x %02x %02x.", devc->buf[0], - devc->buf[1], devc->buf[2], devc->buf[3]); - - /* Expected reply: AA BB ZZ+1 0x0d */ - if (devc->buf[2] != 0x01 || devc->buf[3] != 0x0d) { - sr_err("Received incorrect request reply, retrying."); - devc->state = SEND_PACKET_REQUEST; - return TRUE; - } - - decode_packet(sdi); - - devc->state = SEND_PACKET_REQUEST; - } else { - sr_err("Invalid state: %d.", devc->state); - return FALSE; - } - - /* Stop acquisition if we acquired enough samples. */ - 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; -}