I have a PMOD ESP32 I am trying to flash new firmware to. I have gone through the process of configuring and building the firmware, but when I attempt to flash I consistently get the following "A fatal error occurred: Failed to connect to ESP32: No serial data received".
My setup is as follows: I have a USB cable from my computer to an Arduino micro. GND and 3.3V pins on arduino go to the GND and VCC pins on J1 of the PMOD and arduino pins 11 and 12 (rx and tx) go to rx and tx on J2 of PMOD. I have SW1.2 set to ON. I have a simple arduino script running allowing data to pass through from serial to UART. I tested this connection with the original firmware, I got the OK reply after sending AT in Arduino IDE serial monitor.
I have tried all kinds of connections and settings. As far as I can tell my hardware is setup correctly, however it seems the PMOD is not in boot mode as the error states no serial data received. I have also tried pressing the reset button on the PMOD while it is flashing to no avail. I am using ESP-IDF in administrator mode on CMD.
I have also tried jumping IO0 and GND on J2, also connecting VCC and GND from arduino to IO0 and GND on J2 with no luck.
I have also ordered a PMOD UART to serial converter but I fear I will have the same results trying that when it arrives.
Question
JMarshall97
Hello,
I have a PMOD ESP32 I am trying to flash new firmware to. I have gone through the process of configuring and building the firmware, but when I attempt to flash I consistently get the following "A fatal error occurred: Failed to connect to ESP32: No serial data received".
My setup is as follows: I have a USB cable from my computer to an Arduino micro. GND and 3.3V pins on arduino go to the GND and VCC pins on J1 of the PMOD and arduino pins 11 and 12 (rx and tx) go to rx and tx on J2 of PMOD. I have SW1.2 set to ON. I have a simple arduino script running allowing data to pass through from serial to UART. I tested this connection with the original firmware, I got the OK reply after sending AT in Arduino IDE serial monitor.
I have tried all kinds of connections and settings. As far as I can tell my hardware is setup correctly, however it seems the PMOD is not in boot mode as the error states no serial data received. I have also tried pressing the reset button on the PMOD while it is flashing to no avail. I am using ESP-IDF in administrator mode on CMD.
I have also tried jumping IO0 and GND on J2, also connecting VCC and GND from arduino to IO0 and GND on J2 with no luck.
I have also ordered a PMOD UART to serial converter but I fear I will have the same results trying that when it arrives.
Any input is greatly appreciated.
Thank you
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