How and when is a I2C slave supposed to tell the master "bad request"?
Implementing a I2C in slave mode, I found in the reference manual,26.7.2 Control register 2 (I2C_CR2):Bit 15 NACK: NACK generation (slave mode)The bit is set by software, cleared by hardware when the NACK is sent, or when a STOPcondition or an Addres...