ili9327 mcufriend.com prototype code

prototype.py

import time
import RPi.GPIO as g

g.setmode(g.BOARD)

pins = [
    7,    # cs
    11,   # wr - clock (rising edge)
    12,   # rs - data/command
    15,   # d1
    16,   # d2
    18,   # d3
    19,   # d4 (???)
    21,   # d6 (???)
    22,   # d5 (???)
    23,   # d7
    24,   # d8
    26    # rst
]

CSX = 7
DCX = 12
WRX = 11
RES = 26
D = [
    15,   # d1
    16,   # d2
    18,   # d3
    19,   # d4 (???)
    22,   # d5 (???)
    21,   # d6 (???)
    23,   # d7
    24,   # d8
]

def init():
    # prepare raspberry pins for output
    for x in pins:
        print x
        g.setup(x, g.OUT)
        g.output(x, 1)


    # hard reset sequence
    g.output(RES, 1)
    time.sleep(0.005)  ## 5 ms
    g.output(RES, 0)
    time.sleep(0.015)  ## 15 ms
    g.output(RES, 1)
    time.sleep(0.015)  ## 15 ms

    g.output(CSX, 1)
    g.output(WRX, 1)
    g.output(CSX, 0)



def send_data(cs, byte):
    g.output(DCX, cs)
    g.output(WRX, 0)
    for i in xrange(8):
        g.output( D[i], (byte >> i) & 1 )
    g.output(WRX, 1)


def cmd(byte):
    send_data(0, byte)

def data(byte):
    send_data(1, byte)



#
# Main part
#
init()
#cmd( 0xE9 )
#data( 0x20 )
cmd( 0x11 ) #Exit Sleep
time.sleep( 0.100 )

cmd( 0xD1 )     # VCOM Control                                                                     
data( 0x00 )    #    SEL/VCM                                                                      
data( 0x0C )    #    VCM                                                                      
data( 0x0F )    #    VDV                                                                  

cmd( 0xD0 )     # Power_Setting                                                                     
data( 0x07 )    #    VC                                                                      
data( 0x04 )    #    BT                                                                  
data( 0x00 )    #    VRH                                                                      

cmd( 0x36 )     # Set_address_mode
data( 0x48 )
# 0x48 = 0b01001000
# 0 - top to bottom
# 1 - right to left
# 0 - normal mode of columns order
# 0 - refresh top to bottom
# 1 - RGB or BGR  (here BGR order)
# 0 - <skip>
# 0 - no hflip
# 0 - no flip

cmd( 0x3A )     # Set pixel format
data( 0x05 )
cmd( 0xC1 )     # Display timing setting for normal/partial mode
data( 0x10 )
data( 0x10 )
data( 0x02 )
data( 0x02 )
cmd( 0xC0 )     # Set Default Gamma
data( 0x00 )
data( 0x35 )
data( 0x00 )
data( 0x00 )
data( 0x01 )
data( 0x02 )
cmd( 0xC5 )     # Set frame rate
data( 0x04 )
cmd( 0xD2 )     # Power setting
data( 0x01 )
data( 0x44 )
cmd( 0xC8 )     # Set Gamma
data( 0x04 )
data( 0x67 )
data( 0x35 )
data( 0x04 )
data( 0x08 )
data( 0x06 )
data( 0x24 )
data( 0x01 )
data( 0x37 )
data( 0x40 )
data( 0x03 )
data( 0x10 )
data( 0x08 )
data( 0x80 )
data( 0x00 )
cmd( 0x2A )
data( 0x00 )
data( 0x00 )
data( 0x00 )
data( 0xeF )
cmd( 0x2B )
data( 0x00 )
data( 0x00 )
data( 0x01 )
data( 0x8F )
cmd( 0x29 ) #display on
cmd( 0x2C ) #display on

x1 = 100
y1 = 100
x2 = 200
y2 = 200
cmd(0x2a) # Set_column_address
data(x1>>8)
data(x1)
data(x2>>8)
data(x2)
cmd(0x2b) # Set_page_address
data(y1>>8)
data(y1)
data(y2>>8)
data(y2)
cmd(0x2c) # Write_memory_start

# write pixel by pixel
for x in xrange(100):
    for y in xrange(100):
        data(0xee)  ## low part of word
        data(0)     ## hight part of word


g.output(CSX, 1)    ## end command / data session