8. Receiver_idle_int

8.1. Function description:

This demo show USARTn with USARTm in idle interrupt mode transmitter. To receive an idle interrupt, you need to configure the interrupt to receive an idle mode. When USARTn sends 2 bytes of data, it will generate 2 idle interrupts (USARTn is configured as 8bit mode).Judge whether to pass by judging whether two interrupts have been reached.

8.2. Test result:

If the USARTm idle interrupt Handler executs twice(then disable interrupt), print “pass”, if not, print “fail”.

8.3. IO connection:

PAD	PAD
pad_USARTn_TX	pad_USARTm_RX
pad_USARTn_RX	pad_USARTm_TX

Note

The ‘m’ and ‘n’ in “usartm” and “usartn” indicate the peripheral number.