【Atria AT32WB415 Series Bluetooth BLE 5.0 MCU】Serial port test

常见泽1

【Atria AT32WB415 Series Bluetooth BLE 5.0 MCU】Serial port test [Copy link]

The AT32WB415 series products have three built-in universal synchronous/asynchronous receivers and transmitters (USART1, USART2, and USART3), and one universal asynchronous receiver and transmitter (UART5). USART3 is connected to the wireless Bluetooth module inside the chip, and UART5 only supports TX.

All interfaces can communicate at up to 4.6875 Mbit/s

AT serial port 2 pin

No larger software was found to support higher baud rates.

The software writing method is actually not much different from ST's, the main GPIO structure has changed a bit

Test baud rate 256000

Test baud rate 115200

Reduce to 1200 no problem

Reduced to 600 Error

Reduce to 300 and there will be problems

lugl4313820

Have you tried 921600, or an integer of 2M, etc. Also, is there any packet loss during sending or receiving?

wangerxian

I think there is no need to test if the speed is lower than 9600, the main thing is to test the high speed!

peiqiu

The chip architecture separates Bluetooth from the MCU and communicates through a serial port. This can be understood as the MCU sending AT commands to Bluetooth, similar to the MCU sending and receiving to the 4G module.

常见泽1

lugl4313820 posted on 2022-8-25 21:20 Have you tried 921600, or an integer of 2M or something? Also, is there any packet loss when sending or receiving?

After running for 20 minutes, no packet loss was found at 256000. No test was done at a higher rate.