I'm having trouble with the STM32F030xC I2C bootloader. I can send a command OK, but get errors from my I2C system (Windows based using FTDI) when I try and read the response. My question relates to an ambiguity in AN4221.

[Nrose.2]

AN4221 says it will enter I2C boot mode on detecting its address and will then start waiting for commands. What is not clear is whether this address is sent as part of the first command, or by some separate undescribed operation. I've tried various approaches, without luck. Sample code would be REALLY helpful.

I have no trouble with the USART version.