> 未分类 > [FluidNC Issue#1592] Problem: Expander pin configuration failed

[FluidNC Issue#1592] Problem: Expander pin configuration failed

未分类 bolang 4个月前 (10-14) 49次浏览

Issue #1592 | 状态: 进行中 | 作者: DmiZar | 创建时间: 2025-10-11

Wiki Search Terms

IO Expanders

Controller Board

MKS DLC32

Machine Description

3-axis engraver

Input Circuits

Configuration file

board: MKS-DLC32 V2.1
name: CNC3018
meta: (31.07.2023) by DmiZar
stepping:
  engine: I2S_STATIC
  idle_ms: 255
  pulse_us: 4
  dirdelayus: 1
  disabledelayus: 0
  segments: 12
uart1:
  txd_pin: gpio.0
  rxd_pin: gpio.4
  rtspin: NOPIN
  ctspin: NOPIN
  baud: 1000000
  mode: 8N1
  passthrough_baud: 0
  passthrough_mode: 8E1
uart2:
  txd_pin: gpio.25
  rxd_pin: gpio.33
  rtspin: NOPIN
  ctspin: NOPIN
  baud: 115200
  mode: 8N1
  passthrough_baud: 0
  passthrough_mode: 8E1
uart_channel1:
  reportintervalms: 200
  uart_num: 1
  message_level: Info
i2so:
  bck_pin: gpio.16
  data_pin: gpio.21
  ws_pin: gpio.17
  minpulseus: 2
spi:
  miso_pin: gpio.12
  mosi_pin: gpio.13
  sck_pin: gpio.14
sdcard:
  cs_pin: gpio.15
  carddetectpin: gpio.39
  frequency_hz: 8000000
kinematics:
  Cartesian:
axes:
  sharedstepperdisable_pin: I2SO.0
  sharedstepperresetpin: NOPIN
  homing_runs: 2
  x:
    stepspermm: 800.000000
    maxratemmpermin: 3000.000000
    accelerationmmper_sec2: 200.000000
    maxtravelmm: 262.000000
    soft_limits: true
    homing:
      cycle: 2
      allowsingleaxis: true
      positive_direction: true
      mpos_mm: 0.000000
      feedmmper_min: 50.000000
      seekmmper_min: 3000.000000
      settle_ms: 100
      seek_scaler: 1.100000
      feed_scaler: 1.100000
    motor0:
      limitnegpin: uart_channel1.4:low
      limitpospin: gpio.36
      limitallpin: NO_PIN
      hard_limits: true
      pulloff_mm: 2.000000
      tmc_2209:
        addr: 0
        cspin: NOPIN
        uart_num: 2
        step_pin: I2SO.1
        direction_pin: I2SO.2:low
        disablepin: NOPIN
        rsenseohms: 0.110000
        run_amps: 1.300000
        hold_amps: 0.500000
        microsteps: 16
        toff_disable: 0
        toff_stealthchop: 5
        use_enable: false
        run_mode: CoolStep
        homing_mode: CoolStep
        homing_amps: 0.500000
        stallguard: 0
        stallguard_debug: false
        toff_coolstep: 3
  y:
    stepspermm: 800.000000
    maxratemmpermin: 3000.000000
    accelerationmmper_sec2: 200.000000
    maxtravelmm: 178.000000
    soft_limits: true
    homing:
      cycle: 2
      allowsingleaxis: true
      positive_direction: true
      mpos_mm: 0.000000
      feedmmper_min: 50.000000
      seekmmper_min: 3000.000000
      settle_ms: 100
      seek_scaler: 1.100000
      feed_scaler: 1.100000
    motor0:
      limitnegpin: uart_channel1.5:low
      limitpospin: gpio.35
      limitallpin: NO_PIN
      hard_limits: true
      pulloff_mm: 3.500000
      tmc_2209:
        addr: 1
        cspin: NOPIN
        uart_num: 2
        step_pin: I2SO.5
        direction_pin: I2SO.6:low
        disablepin: NOPIN
        rsenseohms: 0.110000
        run_amps: 1.300000
        hold_amps: 0.500000
        microsteps: 16
        toff_disable: 0
        toff_stealthchop: 5
        use_enable: false
        run_mode: CoolStep
        homing_mode: CoolStep
        homing_amps: 0.500000
        stallguard: 0
        stallguard_debug: false
        toff_coolstep: 3
  z:
    stepspermm: 800.000000
    maxratemmpermin: 3000.000000
    accelerationmmper_sec2: 200.000000
    maxtravelmm: 79.000000
    soft_limits: true
    homing:
      cycle: 1
      allowsingleaxis: true
      positive_direction: true
      mpos_mm: 0.000000
      feedmmper_min: 50.000000
      seekmmper_min: 3000.000000
      settle_ms: 100
      seek_scaler: 1.100000
      feed_scaler: 1.100000
    motor0:
      limitnegpin: uart_channel1.6:low
      limitpospin: gpio.34
      limitallpin: NO_PIN
      hard_limits: true
      pulloff_mm: 2.000000
      tmc_2209:
        addr: 2
        cspin: NOPIN
        uart_num: 2
        step_pin: I2SO.3
        direction_pin: I2SO.4
        disablepin: NOPIN
        rsenseohms: 0.110000
        run_amps: 1.300000
        hold_amps: 0.500000
        microsteps: 16
        toff_disable: 0
        toff_stealthchop: 5
        use_enable: false
        run_mode: CoolStep
        homing_mode: CoolStep
        homing_amps: 0.500000
        stallguard: 0
        stallguard_debug: false
        toff_coolstep: 3
control:
  safetydoorpin: gpio.23
  resetpin: NOPIN
  feedholdpin: gpio.18
  cyclestartpin: gpio.19
  macro0pin: NOPIN
  macro1pin: NOPIN
  macro2pin: NOPIN
  macro3pin: NOPIN
  faultpin: NOPIN
  estoppin: uartchannel1.3
  homingbuttonpin: NO_PIN
coolant:
  flood_pin: gpio.5:low
  mistpin: uartchannel1.8
  delay_ms: 0
probe:
  pin: gpio.22
  toolsetterpin: uartchannel1.2
  checkmodestart: true
  hard_stop: true
macros:
  startup_line0:
  startup_line1:
  Macro0: G21G91&G38.2Z-80F100&G0Z1&G38.2Z-2F10&G92Z0.00&G0Z1&G90
  Macro1:
  Macro2:
  Macro3:
  after_homing: M64P0&G4P0.1&M65P0&$Report/Interval=200
  after_reset:
  after_unlock: M64P0&G4P0.1&M65P0&$Report/Interval=200
start:
  must_home: true
  deactivate_parking: false
  check_limits: false
parking:
  enable: true
  axis: Z
  targetmposmm: 0.000000
  ratemmper_min: 2000.000000
  pulloutdistancemm: 5.000000
  pulloutratemmpermin: 500.000000
user_outputs:
  analog0pin: uartchannel1.16
  analog1pin: uartchannel1.17
  analog2pin: NOPIN
  analog3pin: NOPIN
  analog0_hz: 5000
  analog1_hz: 5000
  analog2_hz: 5000
  analog3_hz: 5000
  digital0_pin: I2SO.7
  digital1pin: uartchannel1.9
  digital2pin: uartchannel1.10
  digital3pin: NOPIN
  digital4pin: uartchannel1.12
  digital5pin: uartchannel1.13
  digital6pin: uartchannel1.14
  digital7pin: uartchannel1.15
user_inputs:
  analog0pin: NOPIN
  analog1pin: NOPIN
  analog2pin: NOPIN
  analog3pin: NOPIN
  digital0pin: uartchannel1.0:low
  digital1pin: NOPIN
  digital2pin: NOPIN
  digital3pin: NOPIN
  digital4pin: NOPIN
  digital5pin: NOPIN
  digital6pin: NOPIN
  digital7pin: NOPIN
atc_manual:
  safezmpos_mm: 0.000000
  probeseekratemmper_min: 500.000000
  probefeedratemmper_min: 50.000000
  changemposmm: -260.000 -170.000 0.000
  etsmposmm: -250.000 -7.000 -50.000
  etsrapidzmposmm: -0.000000
PWM:
  pwm_hz: 1000
  directionpin: uartchannel1.11
  output_pin: gpio.32
  enablepin: NOPIN
  disablewiths0: false
  spinup_ms: 1000
  spindown_ms: 1000
  tool_num: 0
  speed_map: 0=0.00% 0=30.00% 10000=100.00%
  offonalarm: true
  atc: atc_manual
  m6_macro:
  s0withdisable: true
Laser:
  pwm_hz: 1000
  output_pin: gpio.26
  enablepin: NOPIN
  disablewiths0: false
  tool_num: 100
  speed_map: 0=0.00% 255=100.00%
  offonalarm: true
  atc:
  m6_macro:
  s0withdisable: true
arctolerancemm: 0.002000
junctiondeviationmm: 0.010000
verbose_errors: true
report_inches: false
enableparkingoverride_control: false
uselinenumbers: false
planner_blocks: 16

Startup Messages

[MSG:ERR: Showing startup log from previous panic]
[MSG:INFO: FluidNC v3.9.9 https://github.com/bdring/FluidNC]
[MSG:INFO: Compiled with ESP32 SDK:v4.4.7-dirty]
[MSG:INFO: Local filesystem type is littlefs]
[MSG:INFO: Configuration file:MyMKSDLC32212209_Exp.yaml]
[MSG:INFO: Machine CNC3018]
[MSG:INFO: Board MKS-DLC32 V2.1]
[MSG:INFO: UART1 Tx:gpio.0 Rx:gpio.4 RTS:NO_PIN Baud:1000000]
[MSG:INFO: UART2 Tx:gpio.25 Rx:gpio.33 RTS:NO_PIN Baud:115200]
[MSG:INFO: uart_channel1 created at report interval: 200]
[MSG:INFO: IO Expander BOARD:Airedale v1.1,FW:v1.0]
[MSG:INFO: I2SO BCK:gpio.16 WS:gpio.17 DATA:gpio.21Min Pulse:2us]
[MSG:INFO: SPI SCK:gpio.14 MOSI:gpio.13 MISO:gpio.12]
[MSG:INFO: SD Card cs_pin:gpio.15 detect:gpio.39 freq:8000000]
[MSG:INFO: Stepping:I2S_STATIC Pulse:4us Dsbl Delay:0us Dir Delay:1us Idle Delay:255ms]
[MSG:INFO: User Digital Output: 0 on Pin:I2SO.7]
[MSG:INFO: User Digital Output: 1 on Pin:uart_channel1.9]
[MSG:INFO: User Digital Output: 2 on Pin:uart_channel1.10]
[MSG:INFO: User Digital Output: 4 on Pin:uart_channel1.12]
[MSG:INFO: User Digital Output: 5 on Pin:uart_channel1.13]
[MSG:INFO: User Digital Output: 6 on Pin:uart_channel1.14]
[MSG:INFO: User Digital Output: 7 on Pin:uart_channel1.15]
[MSG:INFO: User Analog Output: 0 on Pin:uart_channel1.16 Freq:5000Hz]
[MSG:INFO: User Analog Output: 1 on Pin:uart_channel1.17 Freq:5000Hz]
[MSG:INFO: User Digital Input: digital0pin on Pin uartchannel1.0:low]
[MSG:INFO: Axis count 3]
[MSG:INFO: Shared stepper disable I2SO.0]
[MSG:INFO: Axis X (-262.000,0.000)]
[MSG:INFO:   Motor0]
[MSG:INFO:     tmc2209 UART2 Addr:0 CS:NOPIN Step:I2SO.1 Dir:I2SO.2:low Disable:NO_PIN R:0.110]
[MSG:INFO:  Neg Limit uart_channel1.4:low]
[MSG:ERR: IO Expander is unresponsive]
[MSG:ERR: Critical error in maininit: Expander pin configuration failed: uartchannel1 io.4=in,low]

User Interface Software

No response

What happened?

I made an IO Expander based on BluePill. When I start FluidNC, I get the error:
[MSG:ERR: IO Expander is unresponsive]
[MSG:ERR: Critical error in maininit: Expander pin configuration failed: uartchannel1 io.4=in,low].
I assumed that the expander wasn’t responding to FluidNC’s request in time. But perhaps there’s a different reason.
However, I tried increasing the delay time in UartChanel.cpp from delayus(100) to delayms(100):
bool UartChannel::setAttr(int index, bool* value, const std::string& attrString) {
out(attrString, “EXP:”);
_ackwait = 1;
for (int i = 0; i < 20; i++) { pollLine(nullptr); if (_ackwait < 1) { return _ackwait == 0; } delayms(100); // delayus(100)
}
_ackwait = 0;
log_error(“IO Expander is unresponsive”);
return false;
}
The error no longer appears:
[MSG:INFO: FluidNC v3.9.9 https://github.com/bdring/FluidNC.git%5D
[MSG:INFO: Compiled with ESP32 SDK:v4.4.7-dirty]
[MSG:INFO: Local filesystem type is littlefs]
[MSG:INFO: Configuration file:MyMKSDLC32212209_Exp.yaml]
[MSG:INFO: Machine CNC3018]
[MSG:INFO: Board MKS-DLC32 V2.1]
[MSG:INFO: UART1 Tx:gpio.0 Rx:gpio.4 RTS:NO_PIN Baud:1000000]
[MSG:INFO: UART2 Tx:gpio.25 Rx:gpio.33 RTS:NO_PIN Baud:115200]
[MSG:INFO: uart_channel1 created at report interval: 200]
[MSG:INFO: IO Expander BOARD:Airedale v1.1,FW:v1.0]
[MSG:INFO: I2SO BCK:gpio.16 WS:gpio.17 DATA:gpio.21Min Pulse:2us]
[MSG:INFO: SPI SCK:gpio.14 MOSI:gpio.13 MISO:gpio.12]
[MSG:INFO: SD Card cs_pin:gpio.15 detect:gpio.39 freq:8000000]
[MSG:INFO: Stepping:I2S_STATIC Pulse:4us Dsbl Delay:0us Dir Delay:1us Idle Delay:255ms]
[MSG:INFO: User Digital Output: 0 on Pin:I2SO.7]
[MSG:INFO: User Digital Output: 1 on Pin:uart_channel1.9]
[MSG:INFO: User Digital Output: 2 on Pin:uart_channel1.10]
[MSG:INFO: User Digital Output: 4 on Pin:uart_channel1.12]
[MSG:INFO: User Digital Output: 5 on Pin:uart_channel1.13]
[MSG:INFO: User Digital Output: 6 on Pin:uart_channel1.14]
[MSG:INFO: User Digital Output: 7 on Pin:uart_channel1.15]
[MSG:INFO: User Analog Output: 0 on Pin:uart_channel1.16 Freq:5000Hz]
[MSG:INFO: User Analog Output: 1 on Pin:uart_channel1.17 Freq:5000Hz]
[MSG:INFO: User Digital Input: digital0pin on Pin uartchannel1.0:low]
[MSG:INFO: Axis count 3]
[MSG:INFO: Shared stepper disable I2SO.0]
[MSG:INFO: Axis X (-262.000,0.000)]
[MSG:INFO: Motor0]
[MSG:INFO: tmc2209 UART2 Addr:0 CS:NOPIN Step:I2SO.1 Dir:I2SO.2:low Disable:NO_PIN R:0.110]
[MSG:INFO: Neg Limit uart_channel1.4:low]
[MSG:INFO: Pos Limit gpio.36]
[MSG:INFO: Axis Y (-178.000,0.000)]
[MSG:INFO: Motor0]
[MSG:INFO: tmc2209 UART2 Addr:1 CS:NOPIN Step:I2SO.5 Dir:I2SO.6:low Disable:NO_PIN R:0.110]
[MSG:INFO: Neg Limit uart_channel1.5:low]
[MSG:INFO: Pos Limit gpio.35]
[MSG:INFO: Axis Z (-79.000,0.000)]
[MSG:INFO: Motor0]
[MSG:INFO: tmc2209 UART2 Addr:2 CS:NOPIN Step:I2SO.3 Dir:I2SO.4 Disable:NO_PIN R:0.110]
[MSG:INFO: Neg Limit uart_channel1.6:low]
[MSG:INFO: Pos Limit gpio.34]
[MSG:INFO: X Axis driver test passed]
[MSG:INFO: Y Axis driver test passed]
[MSG:INFO: Z Axis driver test passed]
[MSG:INFO: safetydoorpin gpio.23]
[MSG:INFO: feedholdpin gpio.18]
[MSG:INFO: cyclestartpin gpio.19]
[MSG:INFO: estoppin uartchannel1.3]
[MSG:INFO: Kinematic system: Cartesian]
[MSG:INFO: Connecting to STA SSID:Keenetic-7527]
[MSG:INFO: Connecting.]
[MSG:INFO: Connecting..]
[MSG:INFO: Connected – IP is 192.168.2.120]
[MSG:INFO: WiFi on]
[MSG:INFO: Start mDNS with hostname:http://fluidnc.local/%5D
[MSG:INFO: HTTP started on port 80]
[MSG:INFO: Telnet started on port 23]
[MSG:INFO: ATC:atc_manual]
[MSG:INFO: PWM Spindle Ena:NOPIN Out:gpio.32 Dir:uartchannel1.11 Freq:1000Hz Period:65535 atc:atc_manual]
[MSG:INFO: Laser Ena:NO_PIN Out:gpio.26 Freq:1000Hz Period:65535]
[MSG:INFO: Flood coolant gpio.5:low]
[MSG:INFO: Mist coolant uart_channel1.8]
[MSG:INFO: Probe gpio.22]
[MSG:INFO: Toolsetter uart_channel1.2]

Grbl 3.9 [FluidNC v3.9.9 (wifi) ‘$’ for help]
[MSG:INFO: ALARM: Unhomed]
ALARM:14
[MSG:INFO: uart_channel1 auto report interval set to 200 ms]

The machine is working correctly.
There may be better ways to resolve this error.
Thank you for your attention to this issue.

GCode File

No response

Other Information

No response

原始Issue: https://github.com/bdring/FluidNC/issues/1592

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