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Content ''' Screen dimensions: 296x 128y https://www.thonky.com/qr-code-tutorial first get numeric mode (mode 1) figured out, then expand to different modes mode indicator needs to be 4 bits long start with version 1 (21x21 px), then go up in density character count indicator for version 1 needs to be 9 bits long start with lowest error correction define binary value with specific length: '{0:0<length>b}'.format(value) ''' import ugfx ugfx.init() def clearScreen(amount = 1): ugfx.clear(ugfx.WHITE) ugfx.flush() for x in range(0, amount): ugfx.clear(ugfx.BLACK) ugfx.flush() ugfx.clear(ugfx.WHITE) ugfx.flush() def encodeQrNumeric(): global qrValue # split into groups of 3 splitGroups = [qrValue[i:i+3] for i in range(0, len(qrValue), 3)] # convert each group to binary and merge them into a new string binString = '' for i in splitGroups: binString += '{0:0b}'.format(int(i)) return binString def encodeQrValue(): global qrMode global characterCount global qrValue # format qrMode qrModeBinString = '{0:04b}'.format(qrMode) # get character count formatString = '{0:0'+str(characterCount)+'b}' characterCountBinString = formatString.format(len(qrValue)) if qrMode == 1: qrValueBinString = encodeQrNumeric() # concatenate all bin strings encodedData = qrModeBinString+characterCountBinString+qrValueBinString # add terminator zeroes to encodedData # needs to be 4 bits at most, or the needed amount of bits to reach requiredDataBits if requiredDataBits-len(encodedData) > 3: encodedData += '0000' else: for i in range(0, requiredDataBits-len(encodedData)): encodedData += '0' # add padding zeroes to make total length a multiple of 8 while len(encodedData) % 8 != 0: encodedData += '0' # add padding bytes if length is still too short paddingBytes = ['11101100', '00010001'] paddingBytesIndex = 0 while requiredDataBits > len(encodedData): encodedData += paddingBytes[paddingBytesIndex] paddingBytesIndex = 1 - paddingBytesIndex # TODO pick up things starting at error correction coding #https://www.thonky.com/qr-code-tutorial/error-correction-coding return encodedData clearScreen() qrValue = '01189998819991197253' qrMode = 1 qrVersion = 1 characterCount = 9 requiredDataBits = 19*8 encodeQrValue()