diff options
| -rw-r--r-- | Tools/tests-host/.gitignore | 1 | ||||
| -rw-r--r-- | Tools/tests-host/Makefile | 13 | ||||
| -rw-r--r-- | Tools/tests-host/sbus2_test.cpp | 3 | ||||
| -rw-r--r-- | Tools/tests-host/st24_test.cpp | 77 | ||||
| -rw-r--r-- | src/lib/rc/module.mk | 40 | ||||
| -rw-r--r-- | src/lib/rc/st24.c | 239 | ||||
| -rw-r--r-- | src/lib/rc/st24.h | 162 | ||||
| -rw-r--r-- | src/modules/px4iofirmware/controls.c | 72 | ||||
| -rw-r--r-- | src/modules/px4iofirmware/dsm.c | 10 | ||||
| -rw-r--r-- | src/modules/px4iofirmware/module.mk | 3 | ||||
| -rw-r--r-- | src/modules/px4iofirmware/protocol.h | 1 | ||||
| -rw-r--r-- | src/modules/px4iofirmware/px4io.h | 2 |
12 files changed, 598 insertions, 25 deletions
diff --git a/Tools/tests-host/.gitignore b/Tools/tests-host/.gitignore index 87b314c61..b06f99815 100644 --- a/Tools/tests-host/.gitignore +++ b/Tools/tests-host/.gitignore @@ -2,3 +2,4 @@ mixer_test sbus2_test autodeclination_test +st24_test diff --git a/Tools/tests-host/Makefile b/Tools/tests-host/Makefile index f0737ef88..f44f18be6 100644 --- a/Tools/tests-host/Makefile +++ b/Tools/tests-host/Makefile @@ -3,7 +3,7 @@ CC=g++ CFLAGS=-I. -I../../src/modules -I ../../src/include -I../../src/drivers \ -I../../src -I../../src/lib -D__EXPORT="" -Dnullptr="0" -lm -all: mixer_test sbus2_test autodeclination_test +all: mixer_test sbus2_test autodeclination_test st24_test MIXER_FILES=../../src/systemcmds/tests/test_mixer.cpp \ ../../src/systemcmds/tests/test_conv.cpp \ @@ -20,7 +20,11 @@ SBUS2_FILES=../../src/modules/px4iofirmware/sbus.c \ hrt.cpp \ sbus2_test.cpp -AUTODECLINATION_FILES= ../../src/lib/geo/geo_mag_declination.c \ +ST24_FILES=../../src/lib/rc/st24.c \ + hrt.cpp \ + st24_test.cpp + +AUTODECLINATION_FILES= ../../src/lib/geo_lookup/geo_mag_declination.c \ hrt.cpp \ autodeclination_test.cpp @@ -33,7 +37,10 @@ sbus2_test: $(SBUS2_FILES) autodeclination_test: $(SBUS2_FILES) $(CC) -o autodeclination_test $(AUTODECLINATION_FILES) $(CFLAGS) +st24_test: $(ST24_FILES) + $(CC) -o st24_test $(ST24_FILES) $(CFLAGS) + .PHONY: clean clean: - rm -f $(ODIR)/*.o *~ core $(INCDIR)/*~ mixer_test sbus2_test autodeclination_test
\ No newline at end of file + rm -f $(ODIR)/*.o *~ core $(INCDIR)/*~ mixer_test sbus2_test autodeclination_test st24_test
\ No newline at end of file diff --git a/Tools/tests-host/sbus2_test.cpp b/Tools/tests-host/sbus2_test.cpp index d8fcb695d..e2c18369c 100644 --- a/Tools/tests-host/sbus2_test.cpp +++ b/Tools/tests-host/sbus2_test.cpp @@ -29,7 +29,8 @@ int main(int argc, char *argv[]) { // Trash the first 20 lines for (unsigned i = 0; i < 20; i++) { - (void)fscanf(fp, "%f,%x,,", &f, &x); + char buf[200]; + (void)fgets(buf, sizeof(buf), fp); } // Init the parser diff --git a/Tools/tests-host/st24_test.cpp b/Tools/tests-host/st24_test.cpp new file mode 100644 index 000000000..f143542bd --- /dev/null +++ b/Tools/tests-host/st24_test.cpp @@ -0,0 +1,77 @@ + +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <systemlib/err.h> +#include <drivers/drv_hrt.h> +#include <rc/st24.h> +#include "../../src/systemcmds/tests/tests.h" + +int main(int argc, char *argv[]) { + warnx("ST24 test started"); + + if (argc < 2) + errx(1, "Need a filename for the input file"); + + warnx("loading data from: %s", argv[1]); + + FILE *fp; + + fp = fopen(argv[1],"rt"); + + if (!fp) + errx(1, "failed opening file"); + + float f; + unsigned x; + int ret; + + // Trash the first 20 lines + for (unsigned i = 0; i < 20; i++) { + char buf[200]; + (void)fgets(buf, sizeof(buf), fp); + } + + float last_time = 0; + + while (EOF != (ret = fscanf(fp, "%f,%x,,", &f, &x))) { + if (((f - last_time) * 1000 * 1000) > 3000) { + //warnx("FRAME RESET\n\n"); + } + + uint8_t b = static_cast<uint8_t>(x); + + last_time = f; + + // Pipe the data into the parser + hrt_abstime now = hrt_absolute_time(); + + uint8_t rssi; + uint8_t rx_count; + uint16_t channel_count; + int16_t channels[20]; + + + if (!st24_decode(b, &rssi, &rx_count, &channel_count, channels, sizeof(channels) / sizeof(channels[0]))) + { + //warnx("decoded: %u channels", (unsigned)channel_count); + for (unsigned i = 0; i < channel_count; i++) { + + int16_t val = channels[i]; + // if (i == 6) + warnx("channel %u: %d 0x%03X", i, static_cast<int>(val), static_cast<int>(val)); + } + // unsigned chan = 1; + // warnx("channel %u: %d", chan, static_cast<int>(channels[chan])); + } + + //warnx("%f: 0x%02x >> RSSI: %u #: %u", (double)f, x, static_cast<unsigned>(rssi), static_cast<unsigned>(rx_count)); + } + + if (ret == EOF) { + warnx("Test finished, reached end of file"); + } else { + warnx("Test aborted, errno: %d", ret); + } + +} diff --git a/src/lib/rc/module.mk b/src/lib/rc/module.mk new file mode 100644 index 000000000..e089c6965 --- /dev/null +++ b/src/lib/rc/module.mk @@ -0,0 +1,40 @@ +############################################################################ +# +# Copyright (c) 2014 PX4 Development Team. All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in +# the documentation and/or other materials provided with the +# distribution. +# 3. Neither the name PX4 nor the names of its contributors may be +# used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +############################################################################ + +# +# Yuntec ST24 transmitter protocol decoder +# + +SRCS = st24.c + +MAXOPTIMIZATION = -Os diff --git a/src/lib/rc/st24.c b/src/lib/rc/st24.c new file mode 100644 index 000000000..31a1e3fd3 --- /dev/null +++ b/src/lib/rc/st24.c @@ -0,0 +1,239 @@ +/**************************************************************************** + * + * Copyright (c) 2014 PX4 Development Team. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/* + * @file st24.h + * + * RC protocol implementation for Yuneec ST24 transmitter. + * + * @author Lorenz Meier <lm@inf.ethz.ch> + */ + +#include <stdbool.h> +#include <stdio.h> +#include "st24.h" + +enum ST24_DECODE_STATE { + ST24_DECODE_STATE_UNSYNCED = 0, + ST24_DECODE_STATE_GOT_STX1, + ST24_DECODE_STATE_GOT_STX2, + ST24_DECODE_STATE_GOT_LEN, + ST24_DECODE_STATE_GOT_TYPE, + ST24_DECODE_STATE_GOT_DATA +}; + +const char* decode_states[] = {"UNSYNCED", + "GOT_STX1", + "GOT_STX2", + "GOT_LEN", + "GOT_TYPE", + "GOT_DATA"}; + +/* define range mapping here, -+100% -> 1000..2000 */ +#define ST24_RANGE_MIN 0.0f +#define ST24_RANGE_MAX 4096.0f + +#define ST24_TARGET_MIN 1000.0f +#define ST24_TARGET_MAX 2000.0f + +/* pre-calculate the floating point stuff as far as possible at compile time */ +#define ST24_SCALE_FACTOR ((ST24_TARGET_MAX - ST24_TARGET_MIN) / (ST24_RANGE_MAX - ST24_RANGE_MIN)) +#define ST24_SCALE_OFFSET (int)(ST24_TARGET_MIN - (ST24_SCALE_FACTOR * ST24_RANGE_MIN + 0.5f)) + +static enum ST24_DECODE_STATE _decode_state = ST24_DECODE_STATE_UNSYNCED; +static unsigned _rxlen; + +static ReceiverFcPacket _rxpacket; + +uint8_t st24_common_crc8(uint8_t *ptr, uint8_t len) +{ + uint8_t i, crc ; + crc = 0; + + while (len--) { + for (i = 0x80; i != 0; i >>= 1) { + if ((crc & 0x80) != 0) { + crc <<= 1; + crc ^= 0x07; + + } else { + crc <<= 1; + } + + if ((*ptr & i) != 0) { + crc ^= 0x07; + } + } + + ptr++; + } + + return (crc); +} + + +uint8_t st24_decode(uint8_t byte, uint8_t *rssi, uint8_t* rx_count, uint16_t *channel_count, uint16_t *channels, uint16_t max_chan_count) +{ + + bool ret = false; + + switch (_decode_state) { + case ST24_DECODE_STATE_UNSYNCED: + if (byte == ST24_STX1) { + _decode_state = ST24_DECODE_STATE_GOT_STX1; + } + break; + + case ST24_DECODE_STATE_GOT_STX1: + if (byte == ST24_STX2) { + _decode_state = ST24_DECODE_STATE_GOT_STX2; + } else { + _decode_state = ST24_DECODE_STATE_UNSYNCED; + } + break; + + case ST24_DECODE_STATE_GOT_STX2: + /* ensure no data overflow failure or hack is possible */ + if ((unsigned)byte <= sizeof(_rxpacket.length) + sizeof(_rxpacket.type) + sizeof(_rxpacket.st24_data)) { + _rxpacket.length = byte; + _rxlen = 0; + _decode_state = ST24_DECODE_STATE_GOT_LEN; + } else { + _decode_state = ST24_DECODE_STATE_UNSYNCED; + } + break; + + case ST24_DECODE_STATE_GOT_LEN: + _rxpacket.type = byte; + _rxlen++; + _decode_state = ST24_DECODE_STATE_GOT_TYPE; + break; + + case ST24_DECODE_STATE_GOT_TYPE: + _rxpacket.st24_data[_rxlen - 1] = byte; + _rxlen++; + if (_rxlen == (_rxpacket.length - 1)) { + _decode_state = ST24_DECODE_STATE_GOT_DATA; + } + break; + + case ST24_DECODE_STATE_GOT_DATA: + _rxpacket.crc8 = byte; + _rxlen++; + + if (st24_common_crc8((uint8_t*)&(_rxpacket.length), _rxlen) == _rxpacket.crc8) { + + ret = true; + + /* decode the actual packet */ + + switch (_rxpacket.type) { + + case ST24_PACKET_TYPE_CHANNELDATA12: + { + ChannelData12* d = (ChannelData12*)_rxpacket.st24_data; + + *rssi = d->rssi; + *rx_count = d->packet_count; + *channel_count = 12; + + unsigned stride_count = (*channel_count * 3) / 2; + unsigned chan_index = 0; + + for (unsigned i = 0; i < stride_count; i += 3) { + channels[chan_index] = ((uint16_t)d->channel[i] << 4); + channels[chan_index] |= ((uint16_t)(0xF0 & d->channel[i+1]) >> 4); + /* convert values to 1000-2000 ppm encoding in a not too sloppy fashion */ + channels[chan_index] = (uint16_t)(channels[chan_index] * ST24_SCALE_FACTOR +.5f) + ST24_SCALE_OFFSET; + chan_index++; + + channels[chan_index] = ((uint16_t)d->channel[i+2]); + channels[chan_index] |= (((uint16_t)(0x0F & d->channel[i+1])) << 8); + /* convert values to 1000-2000 ppm encoding in a not too sloppy fashion */ + channels[chan_index] = (uint16_t)(channels[chan_index] * ST24_SCALE_FACTOR +.5f) + ST24_SCALE_OFFSET; + chan_index++; + } + } + break; + + case ST24_PACKET_TYPE_CHANNELDATA24: + { + ChannelData24* d = (ChannelData24*)&_rxpacket.st24_data; + + *rssi = d->rssi; + *rx_count = d->packet_count; + *channel_count = 24; + + unsigned stride_count = (*channel_count * 3) / 2; + unsigned chan_index = 0; + + for (unsigned i = 0; i < stride_count; i += 3) { + channels[chan_index] = ((uint16_t)d->channel[i] << 4); + channels[chan_index] |= ((uint16_t)(0xF0 & d->channel[i+1]) >> 4); + /* convert values to 1000-2000 ppm encoding in a not too sloppy fashion */ + channels[chan_index] = (uint16_t)(channels[chan_index] * ST24_SCALE_FACTOR +.5f) + ST24_SCALE_OFFSET; + chan_index++; + + channels[chan_index] = ((uint16_t)d->channel[i+2]); + channels[chan_index] |= (((uint16_t)(0x0F & d->channel[i+1])) << 8); + /* convert values to 1000-2000 ppm encoding in a not too sloppy fashion */ + channels[chan_index] = (uint16_t)(channels[chan_index] * ST24_SCALE_FACTOR +.5f) + ST24_SCALE_OFFSET; + chan_index++; + } + } + break; + + case ST24_PACKET_TYPE_TRANSMITTERGPSDATA: + { + + ReceiverFcPacket* d = (ReceiverFcPacket*)&_rxpacket; + /* we silently ignore this data for now, as its not classic TX data */ + ret = false; + } + break; + + default: + ret = false; + break; + } + + } else { + /* decoding failed */ + + } + _decode_state = ST24_DECODE_STATE_UNSYNCED; + break; + } + + return !ret; +} diff --git a/src/lib/rc/st24.h b/src/lib/rc/st24.h new file mode 100644 index 000000000..6023a7507 --- /dev/null +++ b/src/lib/rc/st24.h @@ -0,0 +1,162 @@ +/**************************************************************************** + * + * Copyright (c) 2014 PX4 Development Team. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file st24.h + * + * RC protocol definition for Yuneec ST24 transmitter + * + * @author Lorenz Meier <lm@inf.ethz.ch> + */ + +#pragma once + +#include <stdint.h> + +__BEGIN_DECLS + +#define ST24_DATA_LEN_MAX 64 +#define ST24_STX1 0x55 +#define ST24_STX2 0x55 + +enum ST24_PACKET_TYPE { + ST24_PACKET_TYPE_CHANNELDATA12 = 0, + ST24_PACKET_TYPE_CHANNELDATA24, + ST24_PACKET_TYPE_TRANSMITTERGPSDATA +}; + +#pragma pack(push, 1) +typedef struct { + uint8_t header1; ///< 0x55 for a valid packet + uint8_t header2; ///< 0x55 for a valid packet + uint8_t length; ///< length includes type, data, and crc = sizeof(type)+sizeof(data[payload_len])+sizeof(crc8) + uint8_t type; ///< from enum ST24_PACKET_TYPE + uint8_t st24_data[ST24_DATA_LEN_MAX]; + uint8_t crc8; ///< crc8 checksum, calculated by st24_common_crc8 and including fields length, type and st24_data +} ReceiverFcPacket; + +/** + * RC Channel data (12 channels). + * + * This is incoming from the ST24 + */ +typedef struct { + uint16_t t; ///< packet counter or clock + uint8_t rssi; ///< signal strength + uint8_t packet_count; ///< Number of UART packets sent since reception of last RF frame (this tells something about age / rate) + uint8_t channel[18]; ///< channel data, 12 channels (12 bit numbers) +} ChannelData12; + +/** + * RC Channel data (12 channels). + * + */ +typedef struct { + uint16_t t; ///< packet counter or clock + uint8_t rssi; ///< signal strength + uint8_t packet_count; ///< Number of UART packets sent since reception of last RF frame (this tells something about age / rate) + uint8_t channel[36]; ///< channel data, 24 channels (12 bit numbers) +} ChannelData24; + +/** + * Telemetry packet + * + * This is outgoing to the ST24 + * + * imuStatus: + * 8 bit total + * bits 0-2 for status + * - value 0 is FAILED + * - value 1 is INITIALIZING + * - value 2 is RUNNING + * - values 3 through 7 are reserved + * bits 3-7 are status for sensors (0 or 1) + * - mpu6050 + * - accelerometer + * - primary gyro x + * - primary gyro y + * - primary gyro z + * + * pressCompassStatus + * 8 bit total + * bits 0-3 for compass status + * - value 0 is FAILED + * - value 1 is INITIALIZING + * - value 2 is RUNNING + * - value 3 - 15 are reserved + * bits 4-7 for pressure status + * - value 0 is FAILED + * - value 1 is INITIALIZING + * - value 2 is RUNNING + * - value 3 - 15 are reserved + * + */ +typedef struct { + uint16_t t; ///< packet counter or clock + int32_t lat; ///< lattitude (degrees) +/- 90 deg + int32_t lon; ///< longitude (degrees) +/- 180 deg + int32_t alt; ///< 0.01m resolution, altitude (meters) + int16_t vx, vy, vz; ///< velocity 0.01m res, +/-320.00 North-East- Down + uint8_t nsat; ///<number of satellites + uint8_t voltage; ///< 25.4V voltage = 5 + 255*0.1 = 30.5V, min=5V + uint8_t current; ///< 0.5A resolution + int16_t roll, pitch, yaw; ///< 0.01 degree resolution + uint8_t motorStatus; ///< 1 bit per motor for status 1=good, 0= fail + uint8_t imuStatus; ///< inertial measurement unit status + uint8_t pressCompassStatus; ///< baro / compass status +} TelemetryData; + +#pragma pack(pop) + +/** + * CRC8 implementation for ST24 protocol + * + * @param prt Pointer to the data to CRC + * @param len number of bytes to accumulate in the checksum + * @return the checksum of these bytes over len + */ +uint8_t st24_common_crc8(uint8_t *ptr, uint8_t len); + +/** + * Decoder for ST24 protocol + * + * @param byte current char to read + * @param rssi pointer to a byte where the RSSI value is written back to + * @param rx_count pointer to a byte where the receive count of packets signce last wireless frame is written back to + * @param channels pointer to a datastructure of size max_chan_count where channel values (12 bit) are written back to + * @param max_chan_count maximum channels to decode - if more channels are decoded, the last n are skipped and success (0) is returned + * @return 0 for success (a decoded packet), 1 for no packet yet (accumulating), 3 for out of sync, 4 for checksum error + */ +__EXPORT uint8_t st24_decode(uint8_t byte, uint8_t *rssi, uint8_t* rx_count, uint16_t* channel_count, uint16_t *channels, uint16_t max_chan_count); + +__END_DECLS diff --git a/src/modules/px4iofirmware/controls.c b/src/modules/px4iofirmware/controls.c index 185cb20dd..1b7be692a 100644 --- a/src/modules/px4iofirmware/controls.c +++ b/src/modules/px4iofirmware/controls.c @@ -43,6 +43,7 @@ #include <drivers/drv_hrt.h> #include <systemlib/perf_counter.h> #include <systemlib/ppm_decode.h> +#include <rc/st24.h> #include "px4io.h" @@ -51,11 +52,61 @@ #define RC_CHANNEL_LOW_THRESH -8000 /* 10% threshold */ static bool ppm_input(uint16_t *values, uint16_t *num_values, uint16_t *frame_len); +static bool dsm_port_input(uint8_t *rssi); static perf_counter_t c_gather_dsm; static perf_counter_t c_gather_sbus; static perf_counter_t c_gather_ppm; +static int _dsm_fd; + +bool dsm_port_input(uint8_t *rssi) +{ + perf_begin(c_gather_dsm); + uint16_t temp_count = r_raw_rc_count; + uint8_t n_bytes = 0; + uint8_t *bytes; + bool dsm_updated = dsm_input(r_raw_rc_values, &temp_count, &n_bytes, &bytes); + if (dsm_updated) { + r_raw_rc_flags |= PX4IO_P_STATUS_FLAGS_RC_DSM; + r_raw_rc_count = temp_count & 0x7fff; + if (temp_count & 0x8000) + r_raw_rc_flags |= PX4IO_P_RAW_RC_FLAGS_RC_DSM11; + else + r_raw_rc_flags &= ~PX4IO_P_RAW_RC_FLAGS_RC_DSM11; + + r_raw_rc_flags &= ~(PX4IO_P_RAW_RC_FLAGS_FRAME_DROP); + r_raw_rc_flags &= ~(PX4IO_P_RAW_RC_FLAGS_FAILSAFE); + + } + perf_end(c_gather_dsm); + + /* get data from FD and attempt to parse with DSM and ST24 libs */ + uint8_t st24_rssi, rx_count; + uint16_t st24_channel_count; + uint8_t st24_maxchans = 18; + + bool st24_updated = false; + + for (unsigned i = 0; i < n_bytes; i++) { + /* set updated flag if one complete packet was parsed */ + st24_updated |= st24_decode(bytes[i], &st24_rssi, &rx_count, + &st24_channel_count, r_raw_rc_values, st24_maxchans); + } + + if (st24_updated) { + + *rssi = st24_rssi; + r_raw_rc_count = st24_channel_count; + + r_status_flags |= PX4IO_P_STATUS_FLAGS_RC_ST24; + r_raw_rc_flags &= ~(PX4IO_P_RAW_RC_FLAGS_FRAME_DROP); + r_raw_rc_flags &= ~(PX4IO_P_RAW_RC_FLAGS_FAILSAFE); + } + + return false; +} + void controls_init(void) { @@ -65,7 +116,7 @@ controls_init(void) system_state.rc_channels_timestamp_valid = 0; /* DSM input (USART1) */ - dsm_init("/dev/ttyS0"); + _dsm_fd = dsm_init("/dev/ttyS0"); /* S.bus input (USART3) */ sbus_init("/dev/ttyS2"); @@ -116,20 +167,7 @@ controls_tick() { #endif perf_begin(c_gather_dsm); - uint16_t temp_count = r_raw_rc_count; - bool dsm_updated = dsm_input(r_raw_rc_values, &temp_count); - if (dsm_updated) { - r_raw_rc_flags |= PX4IO_P_STATUS_FLAGS_RC_DSM; - r_raw_rc_count = temp_count & 0x7fff; - if (temp_count & 0x8000) - r_raw_rc_flags |= PX4IO_P_RAW_RC_FLAGS_RC_DSM11; - else - r_raw_rc_flags &= ~PX4IO_P_RAW_RC_FLAGS_RC_DSM11; - - r_raw_rc_flags &= ~(PX4IO_P_RAW_RC_FLAGS_FRAME_DROP); - r_raw_rc_flags &= ~(PX4IO_P_RAW_RC_FLAGS_FAILSAFE); - - } + (void)dsm_port_input(&rssi); perf_end(c_gather_dsm); perf_begin(c_gather_sbus); @@ -191,7 +229,7 @@ controls_tick() { /* * If we received a new frame from any of the RC sources, process it. */ - if (dsm_updated || sbus_updated || ppm_updated) { + if (dsm_updated || sbus_updated || ppm_updated || st24_updated) { /* record a bitmask of channels assigned */ unsigned assigned_channels = 0; @@ -379,7 +417,7 @@ controls_tick() { r_status_flags |= PX4IO_P_STATUS_FLAGS_OVERRIDE; /* mix new RC input control values to servos */ - if (dsm_updated || sbus_updated || ppm_updated) + if (dsm_updated || sbus_updated || ppm_updated || st24_updated) mixer_tick(); } else { diff --git a/src/modules/px4iofirmware/dsm.c b/src/modules/px4iofirmware/dsm.c index d3f365822..6e57c9ec7 100644 --- a/src/modules/px4iofirmware/dsm.c +++ b/src/modules/px4iofirmware/dsm.c @@ -452,10 +452,12 @@ dsm_decode(hrt_abstime frame_time, uint16_t *values, uint16_t *num_values) * * @param[out] values pointer to per channel array of decoded values * @param[out] num_values pointer to number of raw channel values returned, high order bit 0:10 bit data, 1:11 bit data + * @param[out] n_butes number of bytes read + * @param[out] bytes pointer to the buffer of read bytes * @return true=decoded raw channel values updated, false=no update */ bool -dsm_input(uint16_t *values, uint16_t *num_values) +dsm_input(uint16_t *values, uint16_t *num_values, uint8_t *n_bytes, uint8_t **bytes) { ssize_t ret; hrt_abstime now; @@ -478,8 +480,12 @@ dsm_input(uint16_t *values, uint16_t *num_values) ret = read(dsm_fd, &dsm_frame[dsm_partial_frame_count], DSM_FRAME_SIZE - dsm_partial_frame_count); /* if the read failed for any reason, just give up here */ - if (ret < 1) + if (ret < 1) { return false; + } else { + *n_bytes = ret; + *bytes = &dsm_frame[dsm_partial_frame_count]; + } dsm_last_rx_time = now; diff --git a/src/modules/px4iofirmware/module.mk b/src/modules/px4iofirmware/module.mk index 01869569f..eb99e8a96 100644 --- a/src/modules/px4iofirmware/module.mk +++ b/src/modules/px4iofirmware/module.mk @@ -14,7 +14,8 @@ SRCS = adc.c \ ../systemlib/mixer/mixer_group.cpp \ ../systemlib/mixer/mixer_multirotor.cpp \ ../systemlib/mixer/mixer_simple.cpp \ - ../systemlib/pwm_limit/pwm_limit.c + ../systemlib/pwm_limit/pwm_limit.c \ + ../../lib/rc/st24.c ifeq ($(BOARD),px4io-v1) SRCS += i2c.c diff --git a/src/modules/px4iofirmware/protocol.h b/src/modules/px4iofirmware/protocol.h index 4739f6e40..e907d2959 100644 --- a/src/modules/px4iofirmware/protocol.h +++ b/src/modules/px4iofirmware/protocol.h @@ -112,6 +112,7 @@ #define PX4IO_P_STATUS_FLAGS_FAILSAFE (1 << 11) /* failsafe is active */ #define PX4IO_P_STATUS_FLAGS_SAFETY_OFF (1 << 12) /* safety is off */ #define PX4IO_P_STATUS_FLAGS_FMU_INITIALIZED (1 << 13) /* FMU was initialized and OK once */ +#define PX4IO_P_STATUS_FLAGS_RC_ST24 (1 << 14) /* SBUS input is valid */ #define PX4IO_P_STATUS_ALARMS 3 /* alarm flags - alarms latch, write 1 to a bit to clear it */ #define PX4IO_P_STATUS_ALARMS_VBATT_LOW (1 << 0) /* [1] VBatt is very close to regulator dropout */ diff --git a/src/modules/px4iofirmware/px4io.h b/src/modules/px4iofirmware/px4io.h index b00a96717..e32fcc72b 100644 --- a/src/modules/px4iofirmware/px4io.h +++ b/src/modules/px4iofirmware/px4io.h @@ -215,7 +215,7 @@ extern uint16_t adc_measure(unsigned channel); extern void controls_init(void); extern void controls_tick(void); extern int dsm_init(const char *device); -extern bool dsm_input(uint16_t *values, uint16_t *num_values); +extern bool dsm_input(uint16_t *values, uint16_t *num_values, uint8_t *n_bytes, uint8_t **bytes); extern void dsm_bind(uint16_t cmd, int pulses); extern int sbus_init(const char *device); extern bool sbus_input(uint16_t *values, uint16_t *num_values, bool *sbus_failsafe, bool *sbus_frame_drop, uint16_t max_channels); |