C-17 Transport

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02 Jul 2019 17:58 #74642 by goebish
Replied by goebish on topic C-17 Transport
why didn't you just reverse throttle channel ?

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02 Jul 2019 19:31 #74643 by planger
Replied by planger on topic C-17 Transport

tianma780 wrote: The protocol gd00x v1 fly my zc-z50

Interresting another compatible model. But with reverse throttle.
Pascal

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03 Jul 2019 06:55 - 03 Jul 2019 07:28 #74646 by tianma780
Replied by tianma780 on topic C-17 Transport
Hello goebish and planger,I have make a mistake.


There is the test report:D7e 256 gd00x_nrf24l01.c(with v1&v2)

1.zc-z50 RX

gd00x v1 can bind and gd00x v2 can not bind

zc-z50 fly not well ,so I change the


"u16 channel=scale_channel(CHANNEL1, 2000, 1000); // aileron
packet[5 ] = channel;
packet[6 ] = channel>>8;
channel=scale_channel(CHANNEL3, 1000, 2000); // throttle
packet[7 ] = channel;
packet[8 ] = channel>>8;
// dynamically driven aileron trim
channel=scale_channel(CHANNEL1, 1000, 2000); // aileron"

to

"u16 channel=scale_channel(CHANNEL1, 1000, 2000); // aileron
packet[5 ] = channel;
packet[6 ] = channel>>8;
channel=scale_channel(CHANNEL3, 1000, 2000); // throttle
packet[7 ] = channel;
packet[8 ] = channel>>8;
// dynamically driven aileron trim
channel=scale_channel(CHANNEL1, 1000, 2000); // aileron"

then set reverse aileron and it work well .

or change the

"u16 channel=scale_channel(CHANNEL1, 2000, 1000); // aileron
packet[5 ] = channel;
packet[6 ] = channel>>8;
channel=scale_channel(CHANNEL3, 1000, 2000); // throttle
packet[7 ] = channel;
packet[8 ] = channel>>8;
// dynamically driven aileron trim
channel=scale_channel(CHANNEL1, 1000, 2000); // aileron"


to

"u16 channel=scale_channel(CHANNEL1, 2000, 1000); // aileron
packet[5 ] = channel;
packet[6 ] = channel>>8;
channel=scale_channel(CHANNEL3, 1000, 2000); // throttle
packet[7 ] = channel;
packet[8 ] = channel>>8;
// dynamically driven aileron trim
channel=scale_channel(CHANNEL1, 2000, 1000); // aileron"

and not need to reverse aileron and it work well.

2.C-17 RX V1

gd00x v1 can bind and gd00x v2 can not bind

it work well. good job!

3.C-17 RX V2

gd00x v2 can bind and gd00x v1 can not bind

it do not work well,I will keep test tonight.

so I suggest the protocol add "z50" "v1" "v2" to choose and fix the part of z50,thank you very much.
Last edit: 03 Jul 2019 07:28 by tianma780.

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03 Jul 2019 07:53 #74648 by planger
Replied by planger on topic C-17 Transport
So Throttle is not reversed now anymore but Aileron is reversed. Still this is something to address in the radio mixers not in the code...
Pascal

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03 Jul 2019 07:57 - 03 Jul 2019 08:08 #74649 by tianma780
Replied by tianma780 on topic C-17 Transport
yes, the code for C-17 v1 and z50 is ok,but c-17 v2 I think the code have some problem,I will test tonight

thank you Pascal
Last edit: 03 Jul 2019 08:08 by tianma780.

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03 Jul 2019 13:01 - 03 Jul 2019 13:34 #74651 by tianma780
Replied by tianma780 on topic C-17 Transport
Hello goebish,Can you help to check this protocol

gd00x_nrf24l01.c(with V1,V2,ZC)

=====================================================
/*
 This project 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.
 Deviation 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 Deviation.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "common.h"
#include "interface.h"
#include "mixer.h"
#include "config/model.h"
#include "config/tx.h"  // for Transmitter

#ifdef PROTO_HAS_NRF24L01

#ifdef EMULATOR
#define USE_FIXED_MFGID
#define GD00X_BIND_COUNT      20
#define GD00X_PACKET_PERIOD   100
#define dbgprintf printf
#else
#define GD00X_BIND_COUNT    857  // 3sec
#define GD00X_PACKET_PERIOD 3500  // Timeout for callback in uSec
// printf inside an interrupt handler is really dangerous
// this shouldn't be enabled even in debug builds without explicitly
// turning it on
#define dbgprintf if(0) printf
#endif

// #define FORCE_GD00X_ORIGINAL_ID

#define GD00X_INITIAL_WAIT 500
#define GD00X_RF_BIND_CHANNEL 2
#define GD00X_PAYLOAD_SIZE 15

#define GD00X_V2_BIND_PACKET_PERIOD 1700
#define GD00X_V2_RF_BIND_CHANNEL    0x43
#define GD00X_V2_PAYLOAD_SIZE   6

#define GD00X_ZC_INITIAL_WAIT 500
#define GD00X_ZC_RF_BIND_CHANNEL 2
#define GD00X_ZC_PAYLOAD_SIZE 15

static const char * const gd00x_opts[] = {
  _tr_noop("Format"), "V1", "V2","ZC", NULL,
  NULL
};
enum {
    PROTOOPTS_FORMAT = 0,
    LAST_PROTO_OPT,
};
enum {
    FORMAT_V1 = 0,
    FORMAT_V2,
    FORMAT_ZC,
};
ctassert(LAST_PROTO_OPT <= NUM_PROTO_OPTS, too_many_protocol_opts);

static u8 tx_power;
static u8 packet[GD00X_PAYLOAD_SIZE];
static u8 hopping_frequency_no;
static u8 rx_tx_addr[5];
static u8 hopping_frequency[4];
static u16 bind_counter;
static u16 packet_period;
static u8 packet_count;
static u8 packet_length;
static u8 phase;
static u8 len;

enum{
    GD00X_BIND,
    GD00X_DATA
};

// flags going to packet[11]
#define GD00X_FLAG_DR       0x08
#define GD00X_FLAG_LIGHT    0x04

// flags going to packet[4]
#define GD00X_V2_FLAG_DR    0x40
#define GD00X_V2_FLAG_LIGHT 0x80

// flags going to packet[11]
#define GD00X_ZC_FLAG_DR       0x08
#define GD00X_ZC_FLAG_LIGHT    0x04

// For code readability
enum {
    CHANNEL1 = 0,
    CHANNEL2,
    CHANNEL3,
    CHANNEL4,
    CHANNEL5,
    CHANNEL6,
};

#define CHANNEL_LIGHT   CHANNEL5

// Bit vector from bit position
#define BV(bit) (1 << bit)

#define CHAN_RANGE (CHAN_MAX_VALUE - CHAN_MIN_VALUE)
static u16 scale_channel(u8 ch, u16 destMin, u16 destMax)
{
    s32 chanval = Channels[ch];
    s32 range = (s32) destMax - (s32) destMin;

    if (chanval < CHAN_MIN_VALUE)
        chanval = CHAN_MIN_VALUE;
    else if (chanval > CHAN_MAX_VALUE)
        chanval = CHAN_MAX_VALUE;
    return (range * (chanval - CHAN_MIN_VALUE)) / CHAN_RANGE + destMin;
}

#define GET_FLAG(ch, mask) (Channels[ch] > 0 ? mask : 0)
static void GD00X_send_packet()
{
    static u8 prev_CH6 = 0;
    switch (Model.proto_opts[PROTOOPTS_FORMAT]) {
        case FORMAT_V1:
            packet[0] = (phase == GD00X_BIND) ? 0xAA : 0x55;
            memcpy(packet+1, rx_tx_addr, 4);
            u16 channel = scale_channel(CHANNEL1, 2000, 1000);  // aileron
            packet[5 ] = channel;
            packet[6 ] = channel>>8;
            channel = scale_channel(CHANNEL3, 1000, 2000);  // throttle
            packet[7 ] = channel;
            packet[8 ] = channel>>8;
            // dynamically driven aileron trim
            channel = scale_channel(CHANNEL1, 1000, 2000);  // aileron
            packet[9 ] = channel;
            packet[10] = channel>>8;
            packet[11] = GD00X_FLAG_DR                      // Force high rate
                       | GET_FLAG(CHANNEL5, GD00X_FLAG_LIGHT);
            packet[12] = 0x00;
            packet[13] = 0x00;
            packet[14] = 0x00;
            break;
        case FORMAT_V2:
            if (phase == GD00X_BIND) {
                for (u8 i = 0; i < 5; i++)
                    packet[i] = rx_tx_addr[i];
            }
            else
            {
                packet[0] = scale_channel(CHANNEL3, 0, 100);    // throttle 0..100

                #define CHANNEL_MAX_100 1844
                #define CHANNEL_MIN_100 204
                #define GD00X_V2_DB_MIN 1024-40
                #define GD00X_V2_DB_MAX 1024+40
                // Deadband is needed on aileron
                u16 aileron = scale_channel(CHANNEL1, CHANNEL_MAX_100, CHANNEL_MIN_100);
                if (aileron > GD00X_V2_DB_MIN && aileron < GD00X_V2_DB_MAX) {
                    packet[1] = 0x20;  // Send the channel centered
                }
                else  // Ail:  0x3F..0x20..0x00
                {
                    if (aileron > GD00X_V2_DB_MAX)
                        packet[1] = 0x1F-((aileron-GD00X_V2_DB_MAX)*(0x20)/(CHANNEL_MAX_100+1-GD00X_V2_DB_MAX));  // 1F..00
                    else
                        packet[1] = 0x3F-((aileron-CHANNEL_MIN_100)*(0x1F)/(GD00X_V2_DB_MIN-CHANNEL_MIN_100));    // 3F..21
                }
                // Trims must be in a seperate channel for this model
                packet[2] = 0x3F-(scale_channel(CHANNEL5, 0, 255)>>2);          // Trim: 0x3F..0x20..0x00

                u8 seq = ((packet_count*3)/7)%5;
                packet[4] = seq | GD00X_V2_FLAG_DR;

                if (GET_FLAG(CHANNEL6, 1) != prev_CH6)
                {  // LED switch is temporary
                    len = 43;
                    prev_CH6 = GET_FLAG(CHANNEL6, 1);
                }
                if (len)
                {  // Send the light flag for a couple of packets
                    packet[4] |= GD00X_V2_FLAG_LIGHT;
                    len--;
                }

                packet[3] = (packet[0]+packet[1]+packet[2]+packet[4])^(rx_tx_addr[0]^rx_tx_addr[1]^rx_tx_addr[2]);

                if ((packet_count%12) == 0 )
                    hopping_frequency_no ^= 1;          // Toggle between the 2 frequencies
                packet_count++;
                if (packet_count > 34) packet_count = 0;        // Full period
                if ( seq == (((packet_count*3)/7)%5) )
                {
                    if (packet_period == 2700)
                        packet_period = 3000;
                    else
                        packet_period = 2700;
                }
                else
                    packet_period = 4300;
            }
            packet[5] = 'D';
            break;
        case FORMAT_ZC:
            packet[0] = (phase == GD00X_BIND) ? 0xAA : 0x55;
            memcpy(packet+1, rx_tx_addr, 4);
            u16 channel = scale_channel(CHANNEL1, 2000, 1000);  // aileron
            packet[5 ] = channel;
            packet[6 ] = channel>>8;
            channel = scale_channel(CHANNEL3, 1000, 2000);  // throttle
            packet[7 ] = channel;
            packet[8 ] = channel>>8;
            // dynamically driven aileron trim
            channel = scale_channel(CHANNEL1, 2000, 1000);  // aileron
            packet[9 ] = channel;
            packet[10] = channel>>8;
            packet[11] = GD00X_FLAG_DR                      // Force high rate
                       | GET_FLAG(CHANNEL5, GD00X_FLAG_LIGHT);
            packet[12] = 0x00;
            packet[13] = 0x00;
            packet[14] = 0x00;
            break;
    }

    // Power on, TX mode, CRC enabled
    XN297_Configure(BV(NRF24L01_00_EN_CRC) | BV(NRF24L01_00_CRCO) | BV(NRF24L01_00_PWR_UP));
    if (phase == GD00X_DATA) {
        NRF24L01_WriteReg(NRF24L01_05_RF_CH, hopping_frequency[hopping_frequency_no]);
        if (Model.proto_opts[PROTOOPTS_FORMAT] == FORMAT_V1) {
            hopping_frequency_no++;
            hopping_frequency_no &= 3;  // 4 RF channels
        }
    }

    NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);
    NRF24L01_FlushTx();
    XN297_WritePayload(packet, packet_length);

    
    if (tx_power != Model.tx_power) {
        // Keep transmit power updated
        tx_power = Model.tx_power;
        NRF24L01_SetPower(tx_power);
    }
}

static void GD00X_init()
{
    NRF24L01_Initialize();
    NRF24L01_SetTxRxMode(TX_EN);
    switch (Model.proto_opts[PROTOOPTS_FORMAT]) {
        case FORMAT_V1:
            XN297_SetTXAddr((u8*)"\xcc\xcc\xcc\xcc\xcc", 5);
            NRF24L01_WriteReg(NRF24L01_05_RF_CH, GD00X_RF_BIND_CHANNEL);
            break;
        case FORMAT_V2:
            XN297_SetTXAddr((u8*)"GDKNx", 5);
            NRF24L01_WriteReg(NRF24L01_05_RF_CH, GD00X_V2_RF_BIND_CHANNEL);
            break;
        case FORMAT_ZC:
            XN297_SetTXAddr((u8*)"\xcc\xcc\xcc\xcc\xcc", 5);
            NRF24L01_WriteReg(NRF24L01_05_RF_CH, GD00X_RF_BIND_CHANNEL);
            break;
    }
    NRF24L01_FlushTx();
    NRF24L01_FlushRx();
    NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);     // Clear data ready, data sent, and retransmit
    NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00);      // No Auto Acknowldgement on all data pipes
    NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);  // Enable data pipe 0 only
    NRF24L01_SetBitrate(NRF24L01_BR_250K);           // 250Kbps
    NRF24L01_SetPower(tx_power);
}

static void GD00X_initialize_txid()
{
    u32 lfsr = 0xb2c54a2ful;
    u8 i,j;
    
#ifndef USE_FIXED_MFGID
    u8 var[12];
    MCU_SerialNumber(var, 12);
    dbgprintf("Manufacturer id: ");
    for (i = 0; i < 12; ++i) {
        dbgprintf("%02X", var[i]);
        rand32_r(&lfsr, var[i]);
    }
    dbgprintf("\r\n");
#endif

    if (Model.fixed_id) {
       for (i = 0, j = 0; i < sizeof(Model.fixed_id); ++i, j += 8)
           rand32_r(&lfsr, (Model.fixed_id >> j) & 0xff);
    }
    // Pump zero bytes for LFSR to diverge more
    for (i = 0; i < sizeof(lfsr); ++i) rand32_r(&lfsr, 0);

    switch (Model.proto_opts[PROTOOPTS_FORMAT]) {
        case FORMAT_V1:
            // tx address
            for (i = 0; i < 2; i++)
                rx_tx_addr[i] = (lfsr >> (i*8)) & 0xff;

            rx_tx_addr[2] = 0x12;
            rx_tx_addr[3] = 0x13;

            u8 start = 76+(rx_tx_addr[0]&0x03);
            for (i = 0; i < 4; i++)
                hopping_frequency[i] = start-(i << 1);

            #ifdef FORCE_GD00X_ORIGINAL_ID
                rx_tx_addr[0] = 0x1F;
                rx_tx_addr[1] = 0x39;
                rx_tx_addr[2] = 0x12;
                rx_tx_addr[3] = 0x13;
                for (i = 0; i < 4; i++)
                    hopping_frequency[i] = 79-(i << 1);
            #endif
            break;
        case FORMAT_V2:
            // Generate 64 different IDs
            rx_tx_addr[1] = 0x00;
            rx_tx_addr[2] = 0x00;
            rx_tx_addr[1+((lfsr&0x10)>>4)] = lfsr&0x8F;
            rx_tx_addr[0] = 0x65;
            rx_tx_addr[3] = 0x95;
            rx_tx_addr[4] = 0x47;  // 'G'

            // hopping calculation
            hopping_frequency[0] = (0x15+(rx_tx_addr[0]^rx_tx_addr[1]^rx_tx_addr[2]^rx_tx_addr[3]))&0x1F;
            if (hopping_frequency[0] == 0x0F)
                hopping_frequency[0] = 0x0E;
            else if ((hopping_frequency[0]&0xFE) == 0x10)
                hopping_frequency[0] += 2;
            hopping_frequency[1] = 0x20+hopping_frequency[0];

            #ifdef FORCE_GD00X_ORIGINAL_ID
                // ID 1
                rx_tx_addr[0] = 0x65;
                rx_tx_addr[1] = 0x00;
                rx_tx_addr[2] = 0x00;
                rx_tx_addr[3] = 0x95;
                rx_tx_addr[4] = 0x47;  // 'G'
                hopping_frequency[0] = 0x05;
                hopping_frequency[1] = 0x25;
                // ID 2
                rx_tx_addr[0] = 0xFD;
                rx_tx_addr[1] = 0x09;
                rx_tx_addr[2] = 0x00;
                rx_tx_addr[3] = 0x65;
                rx_tx_addr[4] = 0x47;  // 'G'
                hopping_frequency[0] = 0x06;
                hopping_frequency[1] = 0x26;
                // ID 3
                rx_tx_addr[0] = 0x67;
                rx_tx_addr[1] = 0x0F;
                rx_tx_addr[2] = 0x00;
                rx_tx_addr[3] = 0x69;
                rx_tx_addr[4] = 0x47;  // 'G'
                hopping_frequency[0] = 0x16;
                hopping_frequency[1] = 0x36;
            #endif
            break;
    }
}

static u16 GD00X_callback()
{
    if (phase == GD00X_BIND) {
        if (--bind_counter == 0) {
            PROTOCOL_SetBindState(0);
            phase = GD00X_DATA;
        }
    }
    GD00X_send_packet();
    return packet_period;
}

static void initialize()
{
    CLOCK_StopTimer();
    tx_power = Model.tx_power;
    packet_period = Model.proto_opts[PROTOOPTS_FORMAT] == FORMAT_V1?GD00X_PACKET_PERIOD:GD00X_V2_BIND_PACKET_PERIOD;
    packet_length = Model.proto_opts[PROTOOPTS_FORMAT] == FORMAT_V1?GD00X_PAYLOAD_SIZE:GD00X_V2_PAYLOAD_SIZE;
    packet_count = 0;
    len = 0;
    hopping_frequency_no = 0;
    bind_counter=GD00X_BIND_COUNT;
    phase = GD00X_BIND;
    PROTOCOL_SetBindState((GD00X_BIND_COUNT * packet_period)/1000);
    GD00X_initialize_txid();
    GD00X_init();
    CLOCK_StartTimer(GD00X_INITIAL_WAIT, GD00X_callback);
}

uintptr_t GD00X_Cmds(enum ProtoCmds cmd)
{
    switch(cmd) {
        case PROTOCMD_INIT:  initialize(); return 0;
        case PROTOCMD_DEINIT:
        case PROTOCMD_RESET:
            CLOCK_StopTimer();
            return (NRF24L01_Reset() ? 1 : -1);
        case PROTOCMD_CHECK_AUTOBIND: return 1;
        case PROTOCMD_BIND:  initialize(); return 0;
        case PROTOCMD_NUMCHAN: return 5;
        case PROTOCMD_DEFAULT_NUMCHAN: return 5;
        case PROTOCMD_CURRENT_ID: return Model.fixed_id;
        case PROTOCMD_GETOPTIONS: return (uintptr_t)gd00x_opts;
        case PROTOCMD_TELEMETRYSTATE: return PROTO_TELEM_UNSUPPORTED;
        case PROTOCMD_CHANNELMAP: return AETRG;
        default: break;
    }
    return 0;
}


#endif
Last edit: 03 Jul 2019 13:34 by goebish. Reason: BBcode

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03 Jul 2019 13:12 - 03 Jul 2019 14:01 #74652 by goebish
Replied by goebish on topic C-17 Transport
Please don't post long chunk of codes without proper BBcode, it's unreadable as it is, and I don't know what you want me to check.

As Pascal said, there's no need to modify the source code, everything can be done with the mixer.
Last edit: 03 Jul 2019 14:01 by goebish.

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03 Jul 2019 13:17 #74653 by tianma780
Replied by tianma780 on topic C-17 Transport
sorry,

I just want to add V1 V2 Z50 in this protocol, just like MJXQ protocol

I dont known how to do

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03 Jul 2019 13:46 #74654 by goebish
Replied by goebish on topic C-17 Transport
Ok, that's dynamic trims that need to be reversed for ZC, try that:
gist.github.com/goebish/a57875dabfd686dffd5733ce1637ab16

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03 Jul 2019 14:11 #74655 by tianma780
Replied by tianma780 on topic C-17 Transport
thank you goebish

but it is error

when I make DFU in docker


""docker start -i deviation_build""

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03 Jul 2019 14:19 #74656 by goebish
Replied by goebish on topic C-17 Transport
retry, there was some garbage and a missing parenthesis
gist.github.com/goebish/a57875dabfd686dffd5733ce1637ab16

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03 Jul 2019 15:28 - 03 Jul 2019 15:35 #74657 by tianma780
Replied by tianma780 on topic C-17 Transport
this time is ok ,I test zc and v1 is ok,

just a little bug:

// flags going to packet[11]
#define GD00X_FLAG_DR 0x08 <---V1 force high rate motor run so fast ,it hard to land the plane,but ZC force high rate motor run not so fast ,it is ok,
#define GD00X_FLAG_LIGHT 0x04


packet[9 ] = channel;
packet[10] = channel>>8;
packet[11] = GD00X_FLAG_DR // Force high rate


so can you change :

// flags going to packet[11]
#define GD00X_FLAG_DR 0x08 <--- ---change this, it is full power ,I want half power
#define GD00X_FLAG_LIGHT 0x04

// flags going to packet[4]
#define GD00X_V2_FLAG_DR 0x40
#define GD00X_V2_FLAG_LIGHT 0x80

// flags going to packet[11]
#define GD00X_ZC_FLAG_DR 0x08
#define GD00X_ZC_FLAG_LIGHT 0x04
Last edit: 03 Jul 2019 15:35 by tianma780.

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03 Jul 2019 15:57 - 03 Jul 2019 16:04 #74658 by tianma780
Replied by tianma780 on topic C-17 Transport
V2 test report:


when binded, theThrottle -100 to -99 but motor run fast , -99 to -67 nothing change ,-67 to 100 it work well,I reverse Throttle ,it is the same
Last edit: 03 Jul 2019 16:04 by tianma780.

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03 Jul 2019 16:00 - 03 Jul 2019 16:00 #74659 by planger
Replied by planger on topic C-17 Transport

tianma780 wrote: V2 test report:
when binded, theThrottle -100 but motor run fast ,I reverse Throttle ,it is the same

What plane are you testing V2 on?
Does the motor speed change when you move the throttle?
Last edit: 03 Jul 2019 16:00 by planger.

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03 Jul 2019 16:08 - 03 Jul 2019 16:09 #74660 by tianma780
Replied by tianma780 on topic C-17 Transport
C-17 airplane, it has two version,v1 is old,now the plane both use V2,it is new,and can not buy the V1,it all update V2


when binded, theThrottle -100 to -99 but motor run fast , -99 to -67 nothing change ,-67 to 100 it work well,I reverse Throttle ,it is the same
Last edit: 03 Jul 2019 16:09 by tianma780.

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03 Jul 2019 16:11 - 03 Jul 2019 16:11 #74661 by planger
Replied by planger on topic C-17 Transport

tianma780 wrote: C-17 airplane, it has two version,v1 is old,now the plane both use V2,it is new,and can not buy the V1,it all update V2


when binded, theThrottle -100 to -99 but motor run fast , -99 to -67 nothing change ,-67 to 100 it work well,I reverse Throttle ,it is the same

It's because your aileron channel is not centered. Calibrate the aileron channel or increase the deadband...
Pascal
Last edit: 03 Jul 2019 16:11 by planger.

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03 Jul 2019 16:18 #74662 by tianma780
Replied by tianma780 on topic C-17 Transport
hah,yes you are right
thank you
how to increase the the aileron`s deadband?

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03 Jul 2019 16:21 #74663 by planger
Replied by planger on topic C-17 Transport
I think you should better calibrate your aileron stick...
Deadband is defined here:
#define GD00X_V2_DB_MIN 1024-40
#define GD00X_V2_DB_MAX 1024+40
40 is the deadband around center (+-40)

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03 Jul 2019 16:32 #74664 by tianma780
Replied by tianma780 on topic C-17 Transport
I see ,thank you!


do you understand my question:

,I test zc and v1 is ok,

just a little bug:

// flags going to packet[11]
#define GD00X_FLAG_DR 0x08 <---V1 force high rate motor run so fast ,it hard to land the plane,but ZC force high rate motor run not so fast ,it is ok,
#define GD00X_FLAG_LIGHT 0x04


packet[9 ] = channel;
packet[10] = channel>>8;
packet[11] = GD00X_FLAG_DR // Force high rate


so can you change :

// flags going to packet[11]
#define GD00X_FLAG_DR 0x08 <--- ---change this, it is full power ,I want half power
#define GD00X_FLAG_LIGHT 0x04

// flags going to packet[4]
#define GD00X_V2_FLAG_DR 0x40
#define GD00X_V2_FLAG_LIGHT 0x80

// flags going to packet[11]
#define GD00X_ZC_FLAG_DR 0x08
#define GD00X_ZC_FLAG_LIGHT 0x04

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03 Jul 2019 17:23 #74666 by tianma780
Replied by tianma780 on topic C-17 Transport
My aileron stick is not good,so I change 40 to 96 ,and now better than before.

Hello goebish and Pascal,can you check the code of V2,
the Throttle from -99 to -66 the motor speed not change.

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