I am using STM32L4P5 or STM32L4R9 microcontrollers and want to implement multiple-processor serial communication with 9-bit data length.
As indicated by the following picture from the RM0432 reference manual, MCU will go into normal when address bit( 9th bit ) is 1 AND address byte matches with local slave address, which is saved in ADD[7:0] of the USART_CR2 register.
But in my development case, I want the microcontroller to escape from mute mode when the address bit( 9th bit ) is 1), do not test the address byte matching. Because the microcontroller would like to receive message with multiple slave address( local address or broadcast address or other group address ).
How I can implement this special requirement? I do not want to process each received character from the UART port.
Thank you very much!
