hi,
I want to receive using DMA on STM32H563ZI
The packet size in not fixed. So i plan to receive first two bytes using HAL_UART_Receive_IT.
Once i get the Length Information I can start reception using HAL_UART_Receive_DMA.
If i need to receive 10, bytes then i supply the 20 in Receive DMA function so that i get HT callback, at this point i already have complete data and i can trigger again for Receive_IT till i get length information for next packet.
Currently when i get the HAL_UART_RxHalfCpltCallback, i see that only the last byte of intended buffer is received.
for example if i'm starting DMA for 10 bytes [ 44 49 07 04 00 00 08 5C 54 03], passing 20bytes in Receive_DMA call
then in the HAL_UART_RxHalfCpltCallback i get only the last byte 03.
Also i want to implement Idle line interrupt so that i can use the call back HAL_UARTEx_RxEventCallback, but there is no code generated for HAL_UARTEx_ReceiveToIdle_DMA.
How can i over come this situation.
Is there any other method i can try to get the complete packet by DMA.
STM CubeMX version for H5 Series is 1.1.1 which i believe is the latest version.
Kindly suggest.
