100 lines
No EOL
2.5 KiB
Lua
100 lines
No EOL
2.5 KiB
Lua
--
|
|
-- LCDIF
|
|
--
|
|
|
|
STMP.lcdif = {}
|
|
|
|
function STMP.lcdif.init()
|
|
HW.LCDIF.CTRL.SFTRST.set()
|
|
HW.LCDIF.CTRL.SFTRST.clr()
|
|
HW.LCDIF.CTRL.CLKGATE.clr()
|
|
end
|
|
|
|
function STMP.lcdif.set_system_timing(data_setup, data_hold, cmd_setup, cmd_hold)
|
|
HW.LCDIF.TIMING.CMD_HOLD.write(cmd_hold)
|
|
HW.LCDIF.TIMING.CMD_SETUP.write(cmd_setup)
|
|
HW.LCDIF.TIMING.DATA_HOLD.write(data_hold)
|
|
HW.LCDIF.TIMING.DATA_SETUP.write(data_setup)
|
|
end
|
|
|
|
function STMP.lcdif.set_byte_packing_format(val)
|
|
HW.LCDIF.CTRL1.BYTE_PACKING_FORMAT.write(val)
|
|
end
|
|
|
|
function STMP.lcdif.set_reset(val)
|
|
if STMP.is_stmp3600() then
|
|
HW.LCDIF.CTRL.RESET.write(val)
|
|
else
|
|
HW.LCDIF.CTRL1.RESET.write(val)
|
|
end
|
|
end
|
|
|
|
function STMP.lcdif.set_word_length(bus_width)
|
|
if STMP.is_stmp3600() or STMP.is_stmp3700() then
|
|
if bus_width == 8 then
|
|
HW.LCDIF.CTRL.WORD_LENGTH.set()
|
|
else
|
|
HW.LCDIF.CTRL.WORD_LENGTH.clr()
|
|
end
|
|
else
|
|
error("STMP.lcdif.set_word_length: unimplemented")
|
|
end
|
|
end
|
|
|
|
function STMP.lcdif.get_word_length()
|
|
if STMP.is_stmp3600() or STMP.is_stmp3700() then
|
|
if HW.LCDIF.CTRL.WORD_LENGTH.read() == 1 then
|
|
return 8
|
|
else
|
|
return 16
|
|
end
|
|
else
|
|
error("STMP.lcdif.get_word_length: unimplemented")
|
|
end
|
|
end
|
|
|
|
function STMP.lcdif.set_data_swizzle(swizzle)
|
|
local v = swizzle
|
|
if type(swizzle) == "string" then
|
|
if swizzle == "NONE" then
|
|
v = 0
|
|
else
|
|
error("unimplemented")
|
|
end
|
|
end
|
|
HW.LCDIF.CTRL.DATA_SWIZZLE.write(v)
|
|
end
|
|
|
|
function STMP.lcdif.is_busy()
|
|
if STMP.is_stmp3600() then
|
|
return HW.LCDIF.CTRL.FIFO_STATUS.read() == 0
|
|
else
|
|
return HW.LCDIF.STAT.TXFIFO_FULL.read() == 1
|
|
end
|
|
end
|
|
|
|
function STMP.lcdif.send_pio(data_mode, data)
|
|
local wl = STMP.lcdif.get_word_length()
|
|
if data_mode then
|
|
HW.LCDIF.CTRL.DATA_SELECT.set()
|
|
else
|
|
HW.LCDIF.CTRL.DATA_SELECT.clr()
|
|
end
|
|
STMP.debug(string.format("lcdif: count = %d", #data))
|
|
HW.LCDIF.CTRL.RUN.clr()
|
|
HW.LCDIF.CTRL.COUNT.write(#data)
|
|
HW.LCDIF.CTRL.RUN.set()
|
|
local i = 1
|
|
while i <= #data do
|
|
local v = 0
|
|
local v_size = 0
|
|
while i <= #data and v_size + wl <= 32 do
|
|
v = bit32.bor(v, bit32.lshift(data[i], v_size))
|
|
v_size = v_size + wl
|
|
i = i + 1
|
|
end
|
|
STMP.debug(string.format("lcdif: i=%d send 0x%x", i, v))
|
|
while STMP.lcdif.is_busy() do STMP.debug("lcdif: fifo full") end
|
|
HW.LCDIF.DATA.write(v)
|
|
end
|
|
end |