Tool/software:
We are using UART DMA to transmit and receive data between the TI AM263Px and a modem, based on the example code: uart_echo_dma_lld_am263px-cc_r5fss0-0_nortos_ti-arm-clang.
Using a logic analyzer to monitor the TX and RX pins, we observed the following behavior:
When we transmit predefined data (18 bytes) to the modem, we immediately receive a response of 12 bytes from the modem.
As per our application requirements, we need to read this 12-byte response in two stages:
- First, read 1 byte
- Then, read the remaining 11 bytes
We are successfully receiving the first byte and getting a receive completion interrupt. However, during the second read attempt, we are not receiving remaining bytes as expected.
