FR_RXFE 51 bsp/boot/arm/integrator/debug.c #define FR_RXFE 0x10 /* Receive FIFO empty */ FR_RXFE 65 bsp/drv/dev/serial/pl011.c #define FR_RXFE 0x10 /* Receive FIFO empty */ FR_RXFE 44 bsp/hal/arm/integrator/diag.c #define FR_RXFE 0x10 /* Receive FIFO empty */