LoRA can't transmit more than 64 byte

[DengZhiYing]

I tried to make my project based on the example of ping-pong Lora mode and SX1276.
I've ported sx1276 driver to the stm32f103c8, havn't use loramac yet. 2 node work in LoRa mode, one in continue recieve mode, one in send mode, when I send < 64 bytes, everyting is OK, but when i send more than 64, ie 65, it can't work, the txdone is trigger, but reciecve node can't indictate packet rxdone.
I have edited this define:
#define BUFFER_SIZE 64 // Define the payload size here
to
#define BUFFER_SIZE 128 // Define the payload size here