I’ve been fighting to make this work
Heltec UART programmer for programing HT-CT62
all connected to a Mac which synchronizes with HELTEC UART programer and lots of other CH430 chip for usb
so:
HELTEC UART programmer GND —> HT-CT62 GND
HELTEC UART programmer 3.3v —> HT-CT62 VCC
HELTEC UART programmer Rx —> HT-CT62 pin20 (TXD)
HELTEC UART programmer Tx —> HT-CT62 pin19 (RXD)
besides:
HT-CT62 pin11 (EN) to VCC
HT-CT62 pin9 with a switch to GND to be able to Flash
what am I missing?
Is that Pin 9, the GPIO1?
Or GPIO9, the pin 15 - which is the one required to be low to flash …
just found out that connecting it with BOOT button pressed (GPIO9 (pin15)) the board to an usb, works like pressing boot + rat in esp32s3 and enables the flashing process
how you solve this problem? i connect txd and rxd to a usb to uart converter. i have en (pin11 ) connected to 3.3v. what i have to do with pin15(gpio9) or something else?
so, the en remain all the time at 3.3v? do you press boot button when you start programming or all the time of programming?
just connect (power it up) with boot preset and release after it (release before flashing it and it should work)