Content import display import mch22 import buttons from fpga_wishbone import FPGAWB import sndmixer import time #sndmixer.begin(1, False) #synthId = sndmixer.synth() #sndmixer.volume(synthId, 255) #sndmixer.freq(synthId, 880) BLACK = display.BLACK WHITE = display.WHITE MARKER = "permanentmarker22" wishbone = FPGAWB() # create a wishbone command buffer radio_enabled = False is_ham = False ## user must confirm to be licensed refresh_screen = True hist = [False]*320 ## for displaying Morse code def setup_fpga(filename): # load bitstream from flash onto the FPGA with open(filename, "rb") as f: mch22.fpga_load(f.read()) def print_disclaimer(): display.drawFill(WHITE) display.drawText(10, 10, "Call out your callsign\nout loud now!", BLACK, MARKER) display.drawText(10, 60, "If you did hesitate\npress [B] to exit.", BLACK, MARKER) display.drawText(10, 110, "In case you _DO_ have\nyour HAM license\npress [START].", BLACK, MARKER) display.flush() def draw_screen(): carrier = ["Carrier OFF", "Carrier ON at 144MHz"][radio_enabled] display.drawLine(0, 217, 319, 217, BLACK) display.drawLine(0, 231, 319, 231, BLACK) display.drawText(10, 10, "FPGA running.", BLACK, MARKER) display.drawText(10, 30, carrier, BLACK, MARKER) display.drawText(10, 60, "[B] to exit()", BLACK, MARKER) display.drawText(10, 80, "[DOWN] to send", BLACK, MARKER) display.drawText(10, 100, "[SEL] to toggle carrier", BLACK, MARKER) def trigger_exit(pressed): if pressed: mch22.exit_python() def trigger_beep(pressed): hist[-1] = pressed carrier = (pressed & radio_enabled) red = False blue = False #sndmixer.freq(synthId, 880) #sndmixer.play(True) #31: carrier #30, 29: leds, red, blue wishbone.queue_write(0xFF, 0xFFFFFF, (carrier<<31) | (blue<<30) | (red<<29) | 0) wishbone.exec() # execute the command queue wishbone.buf = bytearray() #clear it, it will grow indefinitely! def trigger_fpga(pressed): global is_ham if not pressed: return setup_fpga("/apps/python/fpga_morse_144mhz/bitstream.bin") buttons.attach(buttons.BTN_DOWN, trigger_beep) is_ham = True def trigger_toggle_radio(pressed): global radio_enabled global refresh_screen if not pressed: return radio_enabled ^= True refresh_screen = True def main(): global refresh_screen print_disclaimer() buttons.attach(buttons.BTN_START, trigger_fpga) buttons.attach(buttons.BTN_B, trigger_exit) buttons.attach(buttons.BTN_SELECT, trigger_toggle_radio) while not is_ham: pass refresh_screen = True start = time.time_ns() while True: if refresh_screen: display.drawFill(WHITE) draw_screen() refresh_screen = False display.drawRect(0, 219, 320, 11, True, WHITE) for i, h in enumerate(hist): if h: display.drawLine(i, 229, i, 219, BLACK) display.flush() now = time.time_ns() if now - start > 10 * 1000000: start = now hist.pop(0) hist.append(hist[-1]) main()