STM32 UART using interrupt transmitts by byte or data elements array?

ManhPham · ‎2024-09-23

Hello everyone,

I sent the data by UART with command:

uint16_t Size[8];

HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, const uint8_t *pData, uint16_t Size)

Question: Size on this command is 16 bytes or Size is 8 data elements of array?

Andrew Neil · ‎2024-09-25

I know he doesn't, but that is what the uint16_t feature of this function is for.

It's to allow you to provide 9 data bits for the 9-bit mode.

So if you want to test that this feature of this function is working, that's what you need to look for.

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

Karl Yamashita · ‎2024-09-25

Not sure why you keep saying 9 data bits? We're passing 16 data bits.

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