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--
-- Sansa View
--
SANSAVIEW = {}
function SANSAVIEW.set_backlight(val)
-- backlight is PD0
PP.gpio.pin("D",0).enable(true)
PP.gpio.pin("D",0).output_enable(true)
PP.gpio.pin("D",0).write(val)
end
function SANSAVIEW.lcd_reset()
PP.gpio.pin("B", 2).write(true)
PP.gpio.pin("B", 2).write(false)
PP.gpio.pin("B", 2).write(true)
end
function SANSAVIEW.lcd_send_msg(count, val)
local clock = PP.gpio.pin("H", 6)
local data = PP.gpio.pin("H", 4)
local cs = PP.gpio.pin("H", 7)
clock.write(true)
cs.write(false)
for i = count-1, 0, -1 do
data.write(bit32.extract(val, i) == 1)
clock.write(false)
clock.write(true)
end
cs.write(true)
end
function SANSAVIEW.lcd_write_cmd(cmd)
SANSAVIEW.lcd_send_msg(24, bit32.bor(0x700000, cmd))
end
function SANSAVIEW.lcd_write_data(data)
SANSAVIEW.lcd_send_msg(24, bit32.bor(0x720000, data))
end
function SANSAVIEW.lcd_write_reg(cmd, data)
SANSAVIEW.lcd_write_cmd(cmd)
SANSAVIEW.lcd_write_data(data)
end
function SANSAVIEW.lcd_init()
-- lcd reset
PP.gpio.pin("B", 2).enable(true)
PP.gpio.pin("B", 2).write(true)
PP.gpio.pin("B", 2).output_enable(true)
-- lcd type
PP.gpio.pin("G", 3).enable(true)
PP.gpio.pin("G", 3).output_enable(false)
-- spi data
PP.gpio.pin("H", 4).enable(true)
PP.gpio.pin("H", 4).write(true)
PP.gpio.pin("H", 4).output_enable(true)
-- spi clock
PP.gpio.pin("H", 6).enable(true)
PP.gpio.pin("H", 6).write(true)
PP.gpio.pin("H", 6).output_enable(true)
-- spi cs
PP.gpio.pin("H", 7).enable(true)
PP.gpio.pin("H", 7).write(true)
PP.gpio.pin("H", 7).output_enable(true)
-- lcd unk
PP.gpio.pin("J", 1).enable(false)
PP.gpio.pin("J", 1).write(false)
PP.gpio.pin("J", 1).output_enable(false)
HW.SYS.DEV1.write(bit32.bor(HW.SYS.DEV1.read(),0xfc000000))
HW.SYS.DEV3.write(bit32.bor(HW.SYS.DEV3.read(),0xc300000))
HW.SYS.DEV2.write(0x40000000)
SANSAVIEW.lcd_reset()
SANSAVIEW.lcd_type = PP.gpio.pin("G", 3).read()
print(string.format("sansaview: lcd type is %s", SANSAVIEW.lcd_type))
SANSAVIEW.lcd_write_reg(0xE5, 0x8000)
SANSAVIEW.lcd_write_reg(0x0, 0x1)
SANSAVIEW.lcd_write_reg(0x1, 0x100)
SANSAVIEW.lcd_write_reg(0x2, 0x700)
SANSAVIEW.lcd_write_reg(0x3, 0x1230)
SANSAVIEW.lcd_write_reg(0x4, 0x0)
SANSAVIEW.lcd_write_reg(0x8, 0x408)
SANSAVIEW.lcd_write_reg(0x9, 0x0)
SANSAVIEW.lcd_write_reg(0xa, 0x0)
SANSAVIEW.lcd_write_reg(0xd, 0x0)
SANSAVIEW.lcd_write_reg(0xf, 0x2)
SANSAVIEW.lcd_write_reg(0x10, 0x0)
SANSAVIEW.lcd_write_reg(0x11, 0x0)
SANSAVIEW.lcd_write_reg(0x12, 0x0)
SANSAVIEW.lcd_write_reg(0x13, 0x0)
SANSAVIEW.lcd_write_reg(0x10, 0x17B0)
SANSAVIEW.lcd_write_reg(0x11, 0x7)
SANSAVIEW.lcd_write_reg(0x12, 0x13c)
if SANSAVIEW.lcd_type == 0 then
SANSAVIEW.lcd_write_reg(0x13, 0x1700)
SANSAVIEW.lcd_write_reg(0x29, 0x10)
SANSAVIEW.lcd_write_reg(0x20, 0x0)
SANSAVIEW.lcd_write_reg(0x21, 0x0)
SANSAVIEW.lcd_write_reg(0x30, 0x7)
SANSAVIEW.lcd_write_reg(0x31, 0x403)
SANSAVIEW.lcd_write_reg(0x32, 0x400)
SANSAVIEW.lcd_write_reg(0x35, 0x3)
SANSAVIEW.lcd_write_reg(0x36, 0xF07)
SANSAVIEW.lcd_write_reg(0x37, 0x606)
SANSAVIEW.lcd_write_reg(0x38, 0x106)
SANSAVIEW.lcd_write_reg(0x39, 0x7)
else
SANSAVIEW.lcd_write_reg(0x13, 0x1800)
SANSAVIEW.lcd_write_reg(0x29, 0x13)
SANSAVIEW.lcd_write_reg(0x20, 0x0)
SANSAVIEW.lcd_write_reg(0x21, 0x0)
SANSAVIEW.lcd_write_reg(0x30, 0x2)
SANSAVIEW.lcd_write_reg(0x31, 0x606)
SANSAVIEW.lcd_write_reg(0x32, 0x501)
SANSAVIEW.lcd_write_reg(0x35, 0x206)
SANSAVIEW.lcd_write_reg(0x36, 0x504)
SANSAVIEW.lcd_write_reg(0x37, 0x707)
SANSAVIEW.lcd_write_reg(0x38, 0x306)
SANSAVIEW.lcd_write_reg(0x39, 0x7)
end
SANSAVIEW.lcd_write_reg(0x3c, 0x700)
SANSAVIEW.lcd_write_reg(0x3d, 0x700)
SANSAVIEW.lcd_write_reg(0x50, 0x0)
SANSAVIEW.lcd_write_reg(0x51, 0xef) -- 239 - LCD_WIDTH
SANSAVIEW.lcd_write_reg(0x52, 0x0)
SANSAVIEW.lcd_write_reg(0x53, 0x13f) -- 319 - LCD_HEIGHT
SANSAVIEW.lcd_write_reg(0x60, 0x2700)
SANSAVIEW.lcd_write_reg(0x61, 0x1)
SANSAVIEW.lcd_write_reg(0x6a, 0x0)
SANSAVIEW.lcd_write_reg(0x80, 0x0)
SANSAVIEW.lcd_write_reg(0x81, 0x0)
SANSAVIEW.lcd_write_reg(0x82, 0x0)
SANSAVIEW.lcd_write_reg(0x83, 0x0)
SANSAVIEW.lcd_write_reg(0x84, 0x0)
SANSAVIEW.lcd_write_reg(0x85, 0x0)
SANSAVIEW.lcd_write_reg(0x90, 0x10)
SANSAVIEW.lcd_write_reg(0x92, 0x0)
SANSAVIEW.lcd_write_reg(0x93, 0x3)
SANSAVIEW.lcd_write_reg(0x95, 0x110)
SANSAVIEW.lcd_write_reg(0x97, 0x0)
SANSAVIEW.lcd_write_reg(0x98, 0x0)
SANSAVIEW.lcd_write_reg(0xc, 0x110)
SANSAVIEW.lcd_write_reg(0x7, 0x173)
end
function SANSAVIEW.init()
SANSAVIEW.set_backlight(true)
SANSAVIEW.lcd_init()
end
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