[Solved][Duet2Wifi] WiFi SPI Timeout after removing SBC Mod

keyz182

I have a pair of Duet Wifi 2 boards (1.02 and 1.03) that were modded with this SBC mod. I'm aware it's almost certainly voided the warranty (which would have run out anyway), so just looking for advice/pointers.

I've upgraded to Duet 3 Minis, so was going to sell these two boards. In preparation, I removed the mod board and got everything reset to factory. I reflashed the firmware with BOSSA, loaded up a new SD card, and ran M997 S1 to flash the Wifi firmware.

Unfortunately on both boards I just get SPI timeouts when trying to do anything with the WiFi. I thought I might have somehow borked the ESP boards so I replaced them (with ESP-07S, as Farnell sent out those instead of the 12S), reflashed with M997 S1 but still the same SPI timeout.

Can't see any solder bridges, or any other components that may have shifted/desoldered.

I've tried the latest 3.2 and 3.3 firmwares to no avail. Any ideas what to check, or what may be the cause?

RepRapFirmware for Duet 2 WiFi/Ethernet version 3.3
Printer is now online.
>>>M122
SENDING:M122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.3 (2021-06-15 21:44:54) running on Duet WiFi 1.02 or later
Board ID: 08DGM-956GU-DJMSN-6J9FL-3SD6S-TTRHH
Used output buffers: 1 of 24 (1 max)
=== RTOS ===
Static ram: 23876
Dynamic ram: 73544 of which 12 recycled
Never used RAM 16984, free system stack 193 words
Tasks: NETWORK(ready,1.9%,517) HEAT(delaying,0.0%,391) Move(notifyWait,0.1%,364) MAIN(running,66.1%,639) IDLE(ready,31.9%,29), total 100.0%
Owned mutexes: USB(MAIN)
=== Platform ===
Last reset 00:00:12 ago, cause: reset button or watchdog
Last software reset at 2021-09-09 14:06, reason: User, GCodes spinning, available RAM 15512, slot 0
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x00400000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
[ERROR] Error status: 0x00

Step timer max interval 0
MCU temperature: min 36.9, current 37.1, max 37.3
Supply voltage: min 1.7, current 1.7, max 1.7, under voltage events: 0, over voltage events: 0, power good: no
Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0
Driver 0: position 0, ok, SG min/max not available
Driver 1: position 0, ok, SG min/max not available
Driver 2: position 0, ok, SG min/max not available
Driver 3: position 0, ok, SG min/max not available
Driver 4: position 0, ok, SG min/max not available
Driver 5: position 0
Driver 6: position 0
Driver 7: position 0
Driver 8: position 0
Driver 9: position 0
Driver 10: position 0
Driver 11: position 0
Date/time: 1970-01-01 00:00:00
Cache data hit count 716504001
Slowest loop: 0.22ms; fastest: 0.13ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 12.0MBytes/sec
SD card longest read time 0.0ms, write time 0.0ms, max retries 0
=== Move ===
DMs created 83, maxWait 0ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== AuxDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters = -1 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP is idle in state(s) 0
Telnet is idle in state(s) 0
File is idle in state(s) 0
USB is ready with "M122" in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
LCD is idle in state(s) 0
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 0.18ms; fastest: 0.00ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 0 of 8
- WiFi -
Network state is disabled
WiFi module is disabled
Failed messages: pending 2779096485, notready 2779096485, noresp 2779096485
Socket states: 0 0 0 0 0 0 0 0
>>>M552 S1
SENDING:M552 S1
WiFi module started
WiFi reported error: no known networks found
WiFi module is idle
>>>M587 S"IoT_2G" P"********"
SENDING:M587 S"IoT_2G" P"********"
Error: M587: Failed to add SSID to remembered list: SPI timeout
[ERROR] Error: M587: Failed to add SSID to remembered list: SPI timeout

Error retrieving WiFi status message: SPI timeout
[ERROR] Error retrieving WiFi status message: SPI timeout

WiFi module is idle
Failed to change WiFi mode: SPI timeout

>>>M552 S1
SENDING:M552 S1
WiFi module started
>>>M122
SENDING:M122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.3 (2021-06-15 21:44:54) running on Duet WiFi 1.02 or later
Board ID: 08DGM-956GU-DJMSN-6J9FL-3SD6S-TTRHH
Used output buffers: 1 of 24 (1 max)
=== RTOS ===
Static ram: 23876
Dynamic ram: 73544 of which 12 recycled
Never used RAM 16984, free system stack 193 words
Tasks: NETWORK(ready,3.9%,461) HEAT(delaying,0.0%,391) Move(notifyWait,0.1%,364) MAIN(running,73.4%,639) IDLE(ready,22.6%,29), total 100.0%
Owned mutexes: USB(MAIN)
=== Platform ===
Last reset 00:00:17 ago, cause: reset button or watchdog
Last software reset at 2021-09-09 14:06, reason: User, GCodes spinning, available RAM 15512, slot 0
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x00400000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
[ERROR] Error status: 0x00

Step timer max interval 0
MCU temperature: min 36.5, current 38.1, max 38.3
Supply voltage: min 1.7, current 1.7, max 1.7, under voltage events: 0, over voltage events: 0, power good: no
Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0
Driver 0: position 0, ok, SG min/max not available
Driver 1: position 0, ok, SG min/max not available
Driver 2: position 0, ok, SG min/max not available
Driver 3: position 0, ok, SG min/max not available
Driver 4: position 0, ok, SG min/max not available
Driver 5: position 0
Driver 6: position 0
Driver 7: position 0
Driver 8: position 0
Driver 9: position 0
Driver 10: position 0
Driver 11: position 0
Date/time: 1970-01-01 00:00:00
Cache data hit count 920185181
Slowest loop: 99.74ms; fastest: 0.12ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 12.0MBytes/sec
SD card longest read time 0.0ms, write time 0.0ms, max retries 0
=== Move ===
DMs created 83, maxWait 0ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== AuxDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters = -1 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP is idle in state(s) 0
Telnet is idle in state(s) 0
File is idle in state(s) 0
USB is ready with "M122" in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
LCD is idle in state(s) 0
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 1.28ms; fastest: 0.00ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 0 of 8
- WiFi -
Network state is changingMode
WiFi module is idle
Failed messages: pending 0, notready 0, noresp 0
Failed to get WiFi status
Socket states: 0 0 0 0 0 0 0 0
Error retrieving WiFi status message: SPI timeout
[ERROR] Error retrieving WiFi status message: SPI timeout

WiFi module is idle
Failed to change WiFi mode: SPI timeout

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T3P3Tony

@keyz182 did the firmware flash sucessfully?

keyz182

@t3p3tony

Connecting...
Printer is now online.
>>>M997 S1
SENDING:M997 S1
Trying to connect at 230400 baud:
 success
Erasing 4096 bytes...
Erasing 196608 bytes...
Uploading file...
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Upload successful

And for good measure I did an M997 S0 too which correctly reports 3.3 after a restart and M122.

T3P3Tony

@keyz182 ok to the UART comms to the module is working. Have a look at the schematic here

https://github.com/Duet3D/Duet-2-Hardware/blob/master/Duet2/Old versions/DuetWifiv1.02/DuetWifi_Schematic_v1.02.pdf

you can test the continuity for the SPI pins

keyz182

@t3p3tony Continuity to the MCU for MOSI, MISO and SPCK, any other pins I should check?

keyz182

@t3p3tony There's continuity on all three.

T3P3Tony

@keyz182 also the ESP_DATA_RDY and NPCS0

dc42

@keyz182 is the SPI timeout message consistent? That message is sometimes produced spuriously, especially when sending a M587 command for the first time after re-flashing the WiFi firmware.

keyz182

@t3p3tony Continuity (through 2.2KOhm) on both which seems to tally up with the schematic.

@dc42 It's consistent. Right after a flash, leaving it a while, rebooting, etc, all the same as soon as I try M587 or M122.

Connecting...
Printer is now online.
>>>M552 S1
SENDING:M552 S1
WiFi module started
WiFi reported error: no known networks found
WiFi module is idle
WiFi reported error: no known networks found
WiFi module is idle
WiFi reported error: no known networks found
WiFi module is idle
WiFi reported error: no known networks found
WiFi module is idle
WiFi reported error: no known networks found
WiFi module is idle
WiFi reported error: no known networks found
WiFi module is idle
WiFi reported error: no known networks found
WiFi module is idle
WiFi reported error: no known networks found
WiFi module is idle
>>>M587 S"IoT_2G" P"********"
SENDING:M587 S"IoT_2G" P"********"
Error: M587: Failed to add SSID to remembered list: SPI timeout
[ERROR] Error: M587: Failed to add SSID to remembered list: SPI timeout

Error retrieving WiFi status message: SPI timeout
[ERROR] Error retrieving WiFi status message: SPI timeout

WiFi module is idle
Failed to change WiFi mode: SPI timeout
>>>M552 S-1
SENDING:M552 S-1
>>>M552 S0
SENDING:M552 S0
WiFi module started
>>>M552 S1
SENDING:M552 S1
WiFi reported error: no known networks found
WiFi module is idle
WiFi reported error: no known networks found
WiFi module is idle
>>>M587 S"IoT_2G" P"********"
SENDING:M587 S"IoT_2G" P"********"
Error: M587: Failed to add SSID to remembered list: SPI timeout
[ERROR] Error: M587: Failed to add SSID to remembered list: SPI timeout

Error retrieving WiFi status message: SPI timeout
[ERROR] Error retrieving WiFi status message: SPI timeout

WiFi module is idle
Failed to change WiFi mode: SPI timeout

jay_s_uk

@keyz182 can you try sending M552 S0 before trying M587?
I find its sometimes not happy sending the wifi details when in S1

keyz182

@jay_s_uk OK, that worked. Is that documented behavior that I've just misread? I swear I've always done M552 S1 before any M587 commands.

jay_s_uk

@keyz182 the step by step guide does say to put it in S0 mode first.
Its also they way I've documented it on all the STM32/LPC port support pages.

albertshao

@t3p3tony what do ESP_DATA_RDY and NPCS0 for? can this to pin connect to GND or 3.3V pull up, thanks for reply