Posted on July 12, 2015 at 08:35The reason is the buffer size of HAL_UART_Receive_IT(..).
But If I want to receive the data, I call the HAL_UART_Receive_IT(..) repeatly.
So I need to receive the data by interrupt not call repeatly.
In this forum, some answer used the code ''USART_GetITStatus(USART1, USART_IT_RXNE)'' for that in ''USART3_IRQHandler(void)''.
But If the code is made by STM32CubeMX automatically, ''USART_GetITStatus(..)'' does not exist.
How can I receive the data by interrupt not call HAL_UART_Receive_IT repeatly?
and How can I use similar function like USART_GetITStatus(..) in Nucleo board?
Would you help me?
Dear
I have two Nucleo board, STM32F411RET6 and STM32F030R8.
so I tested two board, and got some interesting(?) results.
two board was good for sending.
when UART using HAL_UART_Transmit_IT(HAL_UART_TxCpltCallback) is good.
but receiving is not good.
firstly
I checked the usb2serial module and test serial program also, these are ok.
for STM32F030R8
if the size of the received data is 90Bytes,
(012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789)
then HAL_UART_RxCpltCallback gets signal but just one time.
for STM32F411RET6
if the size of the received data is 200Bytes,
(01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789)
then HAL_UART_RxCpltCallback gets signal
and if I send next 200Bytes, then HAL_UART_RxCpltCallback also gets the signal repeatly.
What's the reason for these results?
Would you help me?
