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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. """ __version__ = '1.3.0' from micropython import const from machine import Pin from time import sleep_us, sleep_ms TM1637_CMD1 = const(64) # 0x40 data command TM1637_CMD2 = const(192) # 0xC0 address command TM1637_CMD3 = const(128) # 0x80 display control command TM1637_DSP_ON = const(8) # 0x08 display on TM1637_DELAY = const(10) # 10us delay between clk/dio pulses TM1637_MSB = const(128) # msb is the decimal point or the colon depending on your display # 0-9, a-z, blank, dash, star _SEGMENTS = bytearray(b'\x3F\x06\x5B\x4F\x66\x6D\x7D\x07\x7F\x6F\x77\x7C\x39\x5E\x79\x71\x3D\x76\x06\x1E\x76\x38\x55\x54\x3F\x73\x67\x50\x6D\x78\x3E\x1C\x2A\x76\x6E\x5B\x00\x40\x63') class TM1637(object): """Library for quad 7-segment LED modules based on the TM1637 LED driver.""" def __init__(self, clk, dio, brightness=7): self.clk = clk self.dio = dio if not 0 <= brightness <= 7: raise ValueError("Brightness out of range") self._brightness = brightness self.clk.init(Pin.OUT, value=0) self.dio.init(Pin.OUT, value=0) sleep_us(TM1637_DELAY) self._write_data_cmd() self._write_dsp_ctrl() def _start(self): self.dio(0) sleep_us(TM1637_DELAY) self.clk(0) sleep_us(TM1637_DELAY) def _stop(self): self.dio(0) sleep_us(TM1637_DELAY) self.clk(1) sleep_us(TM1637_DELAY) self.dio(1) def _write_data_cmd(self): # automatic address increment, normal mode self._start() self._write_byte(TM1637_CMD1) self._stop() def _write_dsp_ctrl(self): # display on, set brightness self._start() self._write_byte(TM1637_CMD3 | TM1637_DSP_ON | self._brightness) self._stop() def _write_byte(self, b): for i in range(8): self.dio((b >> i) & 1) sleep_us(TM1637_DELAY) self.clk(1) sleep_us(TM1637_DELAY) self.clk(0) sleep_us(TM1637_DELAY) self.clk(0) sleep_us(TM1637_DELAY) self.clk(1) sleep_us(TM1637_DELAY) self.clk(0) sleep_us(TM1637_DELAY) def brightness(self, val=None): """Set the display brightness 0-7.""" # brightness 0 = 1/16th pulse width # brightness 7 = 14/16th pulse width if val is None: return self._brightness if not 0 <= val <= 7: raise ValueError("Brightness out of range") self._brightness = val self._write_data_cmd() self._write_dsp_ctrl() def write(self, segments, pos=0): """Display up to 6 segments moving right from a given position. The MSB in the 2nd segment controls the colon between the 2nd and 3rd segments.""" if not 0 <= pos <= 5: raise ValueError("Position out of range") self._write_data_cmd() self._start() self._write_byte(TM1637_CMD2 | pos) for seg in segments: self._write_byte(seg) self._stop() self._write_dsp_ctrl() def encode_digit(self, digit): """Convert a character 0-9, a-f to a segment.""" return _SEGMENTS[digit & 0x0f] def encode_string(self, string): """Convert an up to 4 character length string containing 0-9, a-z, space, dash, star to an array of segments, matching the length of the source string.""" segments = bytearray(len(string)) for i in range(len(string)): segments[i] = self.encode_char(string[i]) return segments def encode_char(self, char): """Convert a character 0-9, a-z, space, dash or star to a segment.""" o = ord(char) if o == 32: return _SEGMENTS[36] # space if o == 42: return _SEGMENTS[38] # star/degrees if o == 45: return _SEGMENTS[37] # dash if o >= 65 and o <= 90: return _SEGMENTS[o-55] # uppercase A-Z if o >= 97 and o <= 122: return _SEGMENTS[o-87] # lowercase a-z if o >= 48 and o <= 57: return _SEGMENTS[o-48] # 0-9 raise ValueError("Character out of range: {:d} '{:s}'".format(o, chr(o))) def hex(self, val): """Display a hex value 0x0000 through 0xffff, right aligned.""" string = '{:04x}'.format(val & 0xffff) self.write(self.encode_string(string)) def number(self, num): """Display a numeric value -999 through 9999, right aligned.""" # limit to range -999 to 9999 num = max(-999, min(num, 9999)) string = '{0: >4d}'.format(num) self.write(self.encode_string(string)) def numbers(self, num1, num2, colon=True): """Display two numeric values -9 through 99, with leading zeros and separated by a colon.""" num1 = max(-9, min(num1, 99)) num2 = max(-9, min(num2, 99)) segments = self.encode_string('{0:0>2d}{1:0>2d}'.format(num1, num2)) if colon: segments[1] |= 0x80 # colon on self.write(segments) def temperature(self, num): if num < -9: self.show('lo') # low elif num > 99: self.show('hi') # high else: string = '{0: >2d}'.format(num) self.write(self.encode_string(string)) self.write([_SEGMENTS[38], _SEGMENTS[12]], 2) # degrees C def show(self, string, colon=False): segments = self.encode_string(string) if len(segments) > 1 and colon: segments[1] |= 128 self.write(segments[:4]) def scroll(self, string, delay=250): segments = string if isinstance(string, list) else self.encode_string(string) data = [0] * 8 data[4:0] = list(segments) for i in range(len(segments) + 5): self.write(data[0+i:4+i]) sleep_ms(delay) class TM1637Decimal(TM1637): """Library for quad 7-segment LED modules based on the TM1637 LED driver. This class is meant to be used with decimal display modules (modules that have a decimal point after each 7-segment LED). """ def encode_string(self, string): """Convert a string to LED segments. Convert an up to 4 character length string containing 0-9, a-z, space, dash, star and '.' to an array of segments, matching the length of the source string.""" segments = bytearray(len(string.replace('.',''))) j = 0 for i in range(len(string)): if string[i] == '.' and j > 0: segments[j-1] |= TM1637_MSB continue segments[j] = self.encode_char(string[i]) j += 1 return segments6:["$","$L20",null,{"project":{"name":"act 2 LAB 6 ","id":"449299947415780353","files":[{"name":"main.py","content":"import time\ntime.sleep(0.1) # Wait for USB to become ready\n\nprint(\"Hello, Pi Pico!\")\nimport tm1637\nfrom machine import Pin\ntm1 = tm1637.TM1637(clk=Pin(0), dio=Pin(1))\ntm2 = tm1637.TM1637(clk=Pin(10), dio=Pin(11))\n\nwhile 1:\n for i in range(10000): \n tm1.number(i)\n tm2.number(i) \n time.sleep(0.001)\n "},{"name":"diagram.json","content":"$21"},{"name":"tm1637.py","content":"$22"}],"serverFiles":[],"owner":"443591377638738945","locked":false,"unlisted":false,"updated":1764745208093,"hearts":0,"userLiked":false}}] 9:null e:[["$","title","0",{"children":"act 2 LAB 6 - Wokwi ESP32, STM32, Arduino Simulator"}],["$","meta","1",{"name":"description","content":"Run IoT and embedded projects in your browser: ESP32, STM32, Arduino, Pi Pico, and more. 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