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i2cMatrix.py
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import smbus
import numpy
import time
amstradCharMap = numpy.array([
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0002
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0003
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0004
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0005
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0006
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0007
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0008
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0009
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+000A
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+000B
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+000C
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+000D
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+000E
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+000F
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0010
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0011
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0012
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0013
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0014
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0015
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0016
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0017
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0018
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0019
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+001A
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+001B
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+001C
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+001D
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+001E
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+001F
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0020 (space)
[0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00], # U+0021 (!)
[0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0022 (")
[0x36, 0x36, 0x7F, 0x36, 0x7F, 0x36, 0x36, 0x00], # U+0023 (#)
[0x0C, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x0C, 0x00], # U+0024 ($)
[0x00, 0x63, 0x33, 0x18, 0x0C, 0x66, 0x63, 0x00], # U+0025 (%)
[0x1C, 0x36, 0x1C, 0x6E, 0x3B, 0x33, 0x6E, 0x00], # U+0026 (&)
[0x06, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0027 (')
[0x18, 0x0C, 0x06, 0x06, 0x06, 0x0C, 0x18, 0x00], # U+0028 (()
[0x06, 0x0C, 0x18, 0x18, 0x18, 0x0C, 0x06, 0x00], # U+0029 ())
[0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00], # U+002A (*)
[0x00, 0x0C, 0x0C, 0x3F, 0x0C, 0x0C, 0x00, 0x00], # U+002B (+)
[0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x06], # U+002C (,)
[0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00], # U+002D (-)
[0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x00], # U+002E (.)
[0x60, 0x30, 0x18, 0x0C, 0x06, 0x03, 0x01, 0x00], # U+002F (/)
[0x3E, 0x63, 0x73, 0x7B, 0x6F, 0x67, 0x3E, 0x00], # U+0030 (0)
[0x0C, 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x3F, 0x00], # U+0031 (1)
[0x1E, 0x33, 0x30, 0x1C, 0x06, 0x33, 0x3F, 0x00], # U+0032 (2)
[0x1E, 0x33, 0x30, 0x1C, 0x30, 0x33, 0x1E, 0x00], # U+0033 (3)
[0x38, 0x3C, 0x36, 0x33, 0x7F, 0x30, 0x78, 0x00], # U+0034 (4)
[0x3F, 0x03, 0x1F, 0x30, 0x30, 0x33, 0x1E, 0x00], # U+0035 (5)
[0x1C, 0x06, 0x03, 0x1F, 0x33, 0x33, 0x1E, 0x00], # U+0036 (6)
[0x3F, 0x33, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x00], # U+0037 (7)
[0x1E, 0x33, 0x33, 0x1E, 0x33, 0x33, 0x1E, 0x00], # U+0038 (8)
[0x1E, 0x33, 0x33, 0x3E, 0x30, 0x18, 0x0E, 0x00], # U+0039 (9)
[0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x00], # U+003A (:)
[0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x06], # U+003B (#)
[0x18, 0x0C, 0x06, 0x03, 0x06, 0x0C, 0x18, 0x00], # U+003C (<)
[0x00, 0x00, 0x3F, 0x00, 0x00, 0x3F, 0x00, 0x00], # U+003D (=)
[0x06, 0x0C, 0x18, 0x30, 0x18, 0x0C, 0x06, 0x00], # U+003E (>)
[0x1E, 0x33, 0x30, 0x18, 0x0C, 0x00, 0x0C, 0x00], # U+003F (?)
[0x3E, 0x63, 0x7B, 0x7B, 0x7B, 0x03, 0x1E, 0x00], # U+0040 (@)
[0x0C, 0x1E, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x00], # U+0041 (A)
[0x3F, 0x66, 0x66, 0x3E, 0x66, 0x66, 0x3F, 0x00], # U+0042 (B)
[0x3C, 0x66, 0x03, 0x03, 0x03, 0x66, 0x3C, 0x00], # U+0043 (C)
[0x1F, 0x36, 0x66, 0x66, 0x66, 0x36, 0x1F, 0x00], # U+0044 (D)
[0x7F, 0x46, 0x16, 0x1E, 0x16, 0x46, 0x7F, 0x00], # U+0045 (E)
[0x7F, 0x46, 0x16, 0x1E, 0x16, 0x06, 0x0F, 0x00], # U+0046 (F)
[0x3C, 0x66, 0x03, 0x03, 0x73, 0x66, 0x7C, 0x00], # U+0047 (G)
[0x33, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x33, 0x00], # U+0048 (H)
[0x1E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00], # U+0049 (I)
[0x78, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E, 0x00], # U+004A (J)
[0x67, 0x66, 0x36, 0x1E, 0x36, 0x66, 0x67, 0x00], # U+004B (K)
[0x0F, 0x06, 0x06, 0x06, 0x46, 0x66, 0x7F, 0x00], # U+004C (L)
[0x63, 0x77, 0x7F, 0x7F, 0x6B, 0x63, 0x63, 0x00], # U+004D (M)
[0x63, 0x67, 0x6F, 0x7B, 0x73, 0x63, 0x63, 0x00], # U+004E (N)
[0x1C, 0x36, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x00], # U+004F (O)
[0x3F, 0x66, 0x66, 0x3E, 0x06, 0x06, 0x0F, 0x00], # U+0050 (P)
[0x1E, 0x33, 0x33, 0x33, 0x3B, 0x1E, 0x38, 0x00], # U+0051 (Q)
[0x3F, 0x66, 0x66, 0x3E, 0x36, 0x66, 0x67, 0x00], # U+0052 (R)
[0x1E, 0x33, 0x07, 0x0E, 0x38, 0x33, 0x1E, 0x00], # U+0053 (S)
[0x3F, 0x2D, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00], # U+0054 (T)
[0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x3F, 0x00], # U+0055 (U)
[0x33, 0x33, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00], # U+0056 (V)
[0x63, 0x63, 0x63, 0x6B, 0x7F, 0x77, 0x63, 0x00], # U+0057 (W)
[0x63, 0x63, 0x36, 0x1C, 0x1C, 0x36, 0x63, 0x00], # U+0058 (X)
[0x33, 0x33, 0x33, 0x1E, 0x0C, 0x0C, 0x1E, 0x00], # U+0059 (Y)
[0x7F, 0x63, 0x31, 0x18, 0x4C, 0x66, 0x7F, 0x00], # U+005A (Z)
[0x1E, 0x06, 0x06, 0x06, 0x06, 0x06, 0x1E, 0x00], # U+005B ([)
[0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0x40, 0x00], # U+005C (\)
[0x1E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1E, 0x00], # U+005D (])
[0x08, 0x1C, 0x36, 0x63, 0x00, 0x00, 0x00, 0x00], # U+005E (^)
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF], # U+005F (_)
[0x0C, 0x0C, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0060 (`)
[0x00, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x6E, 0x00], # U+0061 (a)
[0x07, 0x06, 0x06, 0x3E, 0x66, 0x66, 0x3B, 0x00], # U+0062 (b)
[0x00, 0x00, 0x1E, 0x33, 0x03, 0x33, 0x1E, 0x00], # U+0063 (c)
[0x38, 0x30, 0x30, 0x3e, 0x33, 0x33, 0x6E, 0x00], # U+0064 (d)
[0x00, 0x00, 0x1E, 0x33, 0x3f, 0x03, 0x1E, 0x00], # U+0065 (e)
[0x1C, 0x36, 0x06, 0x0f, 0x06, 0x06, 0x0F, 0x00], # U+0066 (f)
[0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x1F], # U+0067 (g)
[0x07, 0x06, 0x36, 0x6E, 0x66, 0x66, 0x67, 0x00], # U+0068 (h)
[0x0C, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00], # U+0069 (i)
[0x30, 0x00, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E], # U+006A (j)
[0x07, 0x06, 0x66, 0x36, 0x1E, 0x36, 0x67, 0x00], # U+006B (k)
[0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00], # U+006C (l)
[0x00, 0x00, 0x33, 0x7F, 0x7F, 0x6B, 0x63, 0x00], # U+006D (m)
[0x00, 0x00, 0x1F, 0x33, 0x33, 0x33, 0x33, 0x00], # U+006E (n)
[0x00, 0x00, 0x1E, 0x33, 0x33, 0x33, 0x1E, 0x00], # U+006F (o)
[0x00, 0x00, 0x3B, 0x66, 0x66, 0x3E, 0x06, 0x0F], # U+0070 (p)
[0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x78], # U+0071 (q)
[0x00, 0x00, 0x3B, 0x6E, 0x66, 0x06, 0x0F, 0x00], # U+0072 (r)
[0x00, 0x00, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x00], # U+0073 (s)
[0x08, 0x0C, 0x3E, 0x0C, 0x0C, 0x2C, 0x18, 0x00], # U+0074 (t)
[0x00, 0x00, 0x33, 0x33, 0x33, 0x33, 0x6E, 0x00], # U+0075 (u)
[0x00, 0x00, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00], # U+0076 (v)
[0x00, 0x00, 0x63, 0x6B, 0x7F, 0x7F, 0x36, 0x00], # U+0077 (w)
[0x00, 0x00, 0x63, 0x36, 0x1C, 0x36, 0x63, 0x00], # U+0078 (x)
[0x00, 0x00, 0x33, 0x33, 0x33, 0x3E, 0x30, 0x1F], # U+0079 (y)
[0x00, 0x00, 0x3F, 0x19, 0x0C, 0x26, 0x3F, 0x00], # U+007A (z)
[0x38, 0x0C, 0x0C, 0x07, 0x0C, 0x0C, 0x38, 0x00], # U+007B ([)
[0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00], # U+007C (|)
[0x07, 0x0C, 0x0C, 0x38, 0x0C, 0x0C, 0x07, 0x00], # U+007D (])
[0x6E, 0x3B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+007E (~)
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00] # U+007F
])
dataToWrite = [0, 0, 0, 0, 0, 0, 0, 0]
bus = smbus.SMBus(1)
def i2cWrite(devAddr, regAddr, values):
bus.write_i2c_block_data(devAddr, regAddr, values)
print 'Device ', devAddr, ' Reg :', regAddr, ' Data : ', values
return -1
def i2cRead(devAddr, regAddr):
values = bus.read_byte_data(devAddr, regAddr)
return values
while True:
i2cWrite(0x62, 0x09, [0x00, 0x08, 0x07, 0x01])
time.sleep(0.1)
charsToDisplay = raw_input('Enter a sentence to be displayed: ')
time.sleep(0.1)
asciiVal = 0x00
for letter in charsToDisplay:
lastLetter = asciiVal
asciiVal = ord(letter)
for column in range(0, 8):
for row in range(0, 8):
dataToWrite[row] = int((amstradCharMap[lastLetter][row])/2**(column+1)) + int((amstradCharMap[asciiVal][row])*2**(7-column))
dataToWrite[row] = dataToWrite[row] % 256
i2cWrite(0x62, 0x01, dataToWrite)
time.sleep(0.1)
#[0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00], # U+0021 (!)
#[0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], # U+0022 (")