pam-trans A Pulse Amplitude Modulation Radio Transmitter using the STM32F4-DISCOVERY board. ==Pin allocations== GPIOA 4,5: DAC output.c GPIOB 0: E display.c GPIOC 0-3: status ui.c GPIOD 8-15: buttons ui.c GPIOE 7-15: RS DB0-7 display.c