Fixed TX issue with DMA on nRF51 which is not avail. Fixed TX with DMA on nRF52832, requirew TXRDY interrupt
Fixed TX issue with DMA on nRF51 which is not avail.
Fixed TX with DMA on nRF52832, requirew TXRDY interrupt

I-SYST/EHAL,I-SYST/EHAL,I-SYST/EHAL,I-SYST/EHAL