Tool/software:
My customer is trying to implement a GPIO emulated UART(with Tx and Rx) on CC2340. To implement the UART Rx a minimum delay is needed from the GPIO edge to the GPIO interrupt callback. Currently the observed delay is 44us, which is far from the design target 10us.
Is there a way to decrease the delay?
Best regards,
Shuyang
Hi Shuyang,
This finding is verified by the Standby to Active wakeup timing parameter in the Datasheet.
Perhaps if this isn't acceptable to the customer then they can implement a synchronous UART timing approach, where both devices agree on a timing window (i.e. some milliseconds every so seconds) to actively listen for UART data? However, the complexity of designing such a solution may not be worth the minimal advantages it offers.
Regards,
Ryan
