ESP32 controller errata

[gkasprow]

• wrong package for BD5230FVE-TR
• BD5230FVE-TR supply must be connected to EN line
• NE555 triger line must be tied to MODUS_DI
• NE555 capacitance should be 100nF to woro with 9600 baud
• missing bias of RS485 bus (2x680R)
• mdc_pin: GPIO14 mdio_pin: GPIO15, MDIO cannot share line with U0_TXD
• AUR9713AGH EOL
• LQH44PN2R2 hard to source
• add addressed SPI connector; remove CAN

[gkasprow]

• v1.0 HW issues elhep/GEM_HVSUP_eFUSE#1 (comment)

[gkasprow]

• consider adding buffered SPI; IO25, IO 12 and IO2 are strapping pins

[gkasprow]

• add reset output pullup

[gkasprow]

it's not well documented feature but the module ESP32-WROOM-32E (4MB) uses
ESP32-D0WD-V3 or ESP32-D0WDR2-V3; since we don't have PSRAM, ESP32-D0WD-V3 is installed.
For some reason, the voltage level at IO16 and IO17 is 3.3V, which means that the internal FLASH is supplied from 3.3V as well

the VDD_SDIO depends on strapping pins

default values are here

So, for this configuration, we don't need the level translator or IC1 VCCA should be supplied from 3.3V.
I'd leave the assembly option because new ESP32 revisions may have VDDIO fixed at1.8V

[gkasprow]

• add pulldown for RESET transistor - 22k between base and GND does the job