MCH2022 badge?
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Content import machine, badge, ugfx, deepsleep badge.init() ugfx.init() ugfx.input_init() badge.leds_init() badge.leds_enable() ecg = machine.ADC(machine.Pin(33)) ecg.atten(ecg.ATTN_11DB) ecg.width(ecg.WIDTH_12BIT) badge.power_sdcard_enable() data = [0] * 340 i = 0 rr = [1000] * 10 j = 0 last = 0 ovflw = 0 brightness = 30 def up(pressed): global brightness if pressed: brightness += 1 print('New max: ' + str(brightness)) def down(pressed): global brightness if pressed: brightness -= 1 print('New max: ' + str(brightness)) def home(pressed): if pressed: deepsleep.reboot() def draw_ecg(): global data, rr hr = int(60 / (sum(rr) / 800 )) ugfx.fill_rounded_box(16,38,75,36,1,ugfx.WHITE) ugfx.string(28, 38, str(hr), "PermanentMarker36", ugfx.BLACK) ugfx.line(126, 40, 126, 127, ugfx.BLACK) ugfx.line(126, 127, 296, 127, ugfx.BLACK) ugfx.flush() ugfx.fill_rounded_box(126, 40, 170, 88, 1, ugfx.WHITE) def ecg_data(t): global i, j, ovflw, last, brightness s = ecg.read() data[i] = s if i == 339: i = 0 ovflw = 1 draw_ecg() else: i = i + 1 hi = 3500 lo = 1500 t = 2500 - lo if s < lo: p = 0 y = 1 elif s > hi: p = 1 y = 88 else: s = s - lo hilo = hi - lo p = s / hilo y = int(p * 88) if s > t: if ovflw: fi = i + 340 ovflw = 0 else: fi = i if (fi - last) > 20: rr[j] = fi - last if j == 9: j = 0 else: j = j + 1 last = i scaling = 0.18 on = p // scaling result = b"" for ii in range(on): result += bytes([0, brightness, 0, 0]) result += bytes([0, int((p%scaling)/scaling*brightness), 0, 0]) for ii in range(5 - on): result += bytes([0, 0, 0, 0]) badge.leds_send_data(result) x = 126 + int(i/2) ugfx.line(x, 128 - y, x, 128, ugfx.BLACK) ugfx.input_attach(ugfx.BTN_START, home) ugfx.input_attach(ugfx.JOY_UP, up) ugfx.input_attach(ugfx.JOY_DOWN, down) ugfx.clear(ugfx.WHITE) ugfx.string(130, 1, "Roosted", "PermanentMarker36", ugfx.BLACK) badge.eink_png(0, 0, '/lib/ecg/hearth.png') ugfx.flush(ugfx.LUT_FULL) ugfx.set_lut(ugfx.LUT_FULL) t = machine.Timer(-1) t.init(period=8, mode=machine.Timer.PERIODIC, callback=ecg_data)