New reTerminal, powers up with blank screen

[takashi]

Are you checking this one?
If the I2C slave of 0x45 does not appear, then there is a problem with the STM32 firmware.

Perhaps even a simple Method 1 could be used to write firmware. (Skip No.8)

New reTerminal, powers up with blank screen

Hi @beadon , It seems that STM32 firmware is not working properly because there is 0x56 in I2C slave. Turn reTerminal off and on, and check again with i2cdetect -y 1 to see if 0x45 is displayed. If the situation does not change, rewrite the STM32 firmware.(see Method 2)