trx_frame_write(len(frm), frm); /* TRX_IRQ_TRX_UR occurs here */ cause = trx_reg_read(RG_IRQ_STATUS); proc_txur();
frm = trx_frame_read(); /* TRX_IRQ_TRX_UR occurs here */ cause = trx_reg_read(RG_IRQ_STATUS); proc_rxur(); /* TRX_IRQ_TRX_END occurs here */