Transmitting and receiving custom serial bitstream

[FAJOL.1]

Hi Community,

 

1) I have to demodulated a continuous bitstream of 201bit (1ms per bit) sent by a host to my stm32F401RE. Which peripheral would you suggest to use?

2) If I have to transmitt and receive custom serial data  in half duplex with clock in Tx and Rx clock for sampling, which peripheral you suggest to use? In this case datarate is 1Mbps.

Thanks 

 

 

 

[AScha.3]

Hi,

without more info about bit format or frame sync/start , i can say:

1. Timer input capture (as i use for IR remote signal, which is (also) 1ms bit time )

2. Usart in sync mode

[FAJOL.1]

Thanks,

 

Regarding 2, I forgot to say that the serial data is custom lenght bitstream of 200bit ( no pause in the bitstream, no stop bit between words etc..).

Thanks

[AScha.3]

So... for

1. Timer input capture (-> interrupt )

2. SPI (16bit mode) -> circular DMA ( and you analyse in half/full callbacks the received stream in int16_t arrays)

[Tesla DeLorean]

Such a low bit rate? I would probably use TIM Input Capture or EXTI