Unfortunately, my Z decided to go dark during the rinse cycle after my third brewing session. Dark means the display stays off and it doesn't respond to any inputs.
A good and capable friend hooked his laptop up to the serial port of the main micro controller, the ESP32, yielding the following result:
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rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:\DIO, clock div:1
load:0x3fff0018,len:4
load:0x3fff001c,len:1100
load:0x40078000,len:10088
load:0x40080400,len:6380
entry 0x400806a4
DBG ***********************************************************************
DBG * ZSeries *
DBG ***********************************************************************
[D>][ 0.06][CORE][Core.h:1321] setup BEGIN 0
[D_][ 0.07][CORE][Core.h:264] screenPower() True
[I_][ 0.07][SYST][System.h:291] scan()
[D>][ 0.07][I2C][System.h:91] scan BEGIN 0
[IV][ 0.09][I2C] Name = I2CA
[IV][ 0.09][I2C] Expected = 0x19 0x34 0x76
[IV][ 0.09][I2C] Found = 0x19 0x34 0x76
[IV][ 0.09][I2C] Missing =
[IV][ 0.09][I2C] hasError = False
[D<][ 0.10][I2C][System.h:91] scan END 24
[D>][ 0.10][I2C][System.h:91] scan BEGIN 0
[IV][ 0.12][I2C] Name = I2CB
[IV][ 0.12][I2C] Expected = 0x40
[IV][ 0.12][I2C] Found =
[IV][ 0.12][I2C] Missing = 0x40
[IV][ 0.12][I2C] hasError = True
[D<][ 0.12][I2C][System.h:91] scan END 19
[31m[E_][ 0.12][SYSST][SystemState.h:104] setError I2CB [0m
[D>][ 0.13][BSL][Msp.h:666] _setupMsp BEGIN 0
[IV][ 0.15][MSPA] CRC_result = 24539
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He managed to trace this further. A second micro controller, a Texas Instruments MSP430G2553 is hooked up to the I2CB, and is the device that fails to probe and stops the boot.
As customer service didn't (and can't) respond further, has anybody seen a similar error? Can you dump the TI microcontroller's firmware or is it locked? If you can dump it, our plan would be to buy a new TI and flash it with the dumped image.
Alternatively, does anybody know if the Z firmware contains the firmware for the second micro controller, too?
Thank you & Cheers,
Sheep2045