Issue with Command Handling in AVR128DA48 UART Communication
I am using AVR128DA48 microcontroller to control an LED in serial communication. The way I set it up is not complex;
I’m sending ‘ON’ and ‘OFF’ commands from a
Here’s what happens:
.
Normally I know microcontroller has simple firmware that reads serial data, processes the ‘ON’ or ‘OFF’ commands, toggles the LED accordingly, and sends back a confirmation message like ‘LED ON’ or ‘LED OFF’.
But what could be causing the delay or missed first command that I am facing?
How can I ensure that the board processes the first command correctly and responds immediately?
I made sure to verifying the baud rate and ensuring it matches on both ends as 9600
Even flushing the serial buffer before and after sending commands in the python script.
I’m sending ‘ON’ and ‘OFF’ commands from a
python script over UART to toggle the LED on the microcontroller. Funny how I am encountering an issue where the first command is ignored, but the second one triggers a response.Here’s what happens:
- I send ‘ON’ – the microcontroller does not respond.
- I send ‘OFF’ – it responds with ‘LED ON’.
- I send ‘ON’ again !! – it responds with ‘LED OFF’.
. Normally I know microcontroller has simple firmware that reads serial data, processes the ‘ON’ or ‘OFF’ commands, toggles the LED accordingly, and sends back a confirmation message like ‘LED ON’ or ‘LED OFF’.
But what could be causing the delay or missed first command that I am facing?
How can I ensure that the board processes the first command correctly and responds immediately?
I made sure to verifying the baud rate and ensuring it matches on both ends as 9600
Even flushing the serial buffer before and after sending commands in the python script.
