文章目录[隐藏]
目录
一、接口连接
| 开发板引脚 | LCD / KEY 引脚 | GPIO编号 | 备注 |
| PB_00 | BL | 16 | |
| PB_04 | CS | 20 | |
| PB_01 | DC | 17 | |
| PB_03 | RES | 19 | |
| PB_05 | SDA | 21 | |
| PB_02 | SCL | 18 | |
| PA_00 | LKEY | 0 | 代码里pin_key_right |
| PA_07 | UPKEY | 7 | 代码里pin_key_up |
| PA_04 | CENTER | 4 | 代码里pin_key_center |
| PA_01 | DWKEY | 1 | 代码里pin_key_left |
| PB_11 | RKEY | 27 | 代码里pin_key_down |
二、测试程序
1、LCD显示demo
log.info("lcd.init",
lcd.init("st7735s",{port = "device",pin_dc = 17, pin_pwr = 7,pin_rst = 19,direction = 2,w = 160,h = 80,xoffset = 1,yoffset = 26},spi_lcd))
log.info("lcd.drawLine", lcd.drawLine(20,20,150,20,0x001F))
log.info("lcd.drawRectangle", lcd.drawRectangle(20,40,120,70,0xF800))
log.info("lcd.drawCircle", lcd.drawCircle(50,50,20,0x0CE0))
--显示之前先设置为中文字体
lcd.setFont(lcd.font_opposansm12)
lcd.drawStr(20,20,"LuarOS!!")2、按键引脚定义
--按键引脚定义
local pin_key_up = 7
local pin_key_down = 27
local pin_key_left = 1
local pin_key_right = 0
local pin_key_center = 4
gpio.setup(pin_key_up, nil, gpio.PULLUP)
gpio.setup(pin_key_down, nil, gpio.PULLUP)
gpio.setup(pin_key_left, nil, gpio.PULLUP)
gpio.setup(pin_key_right, nil, gpio.PULLUP)
gpio.setup(pin_key_center, nil, gpio.PULLUP)3、变量及XY坐标偏移方法
local x = 50
local y = 50
local updateflag = 0
local laststate = 0
local holdcnt = 0
local function XYOffsetUp(value)
y = y - value
end
local function XYOffsetDown(value)
y = y + value
end
local function XYOffsetLeft(value)
x = x - value
end
local function XYOffsetRight(value)
x = x + value
end4、单击操作函数
local function KeyPass(flag)
local action = 0
if flag & 0x0001 == 0x0001 then
log.info("state", "Pass 上")
XYOffsetUp(1)
action = 1
end
if flag & 0x0002 == 0x0002 then
log.info("state", "Pass 下")
XYOffsetDown(1)
action = 2
end
if flag & 0x0004 == 0x0004 then
log.info("state", "Pass 左")
XYOffsetLeft(1)
action = 3
end
if flag & 0x0008 == 0x0008 then
log.info("state", "Pass 右")
XYOffsetRight(1)
action = 4
end
if flag & 0x0010 == 0x0010 then
x = 50
y = 50
log.info("state", "Pass 中")
lcd.clear()
--显示demo
lcd.drawLine(20,20,150,20,0x001F)
lcd.drawRectangle(20,40,120,70,0xF800)
lcd.drawCircle(50,50,20,0x0CE0)
lcd.drawStr(20,20,"LuarOS!!")
end
if action > 0 then
lcd.drawCircle(x,y,1,0x0CE0)
end
end5、长按操作函数
local function KeyPassHold(flag)
local action = 0
if flag & 0x0001 == 0x0001 then
action = 1
XYOffsetUp(1)
log.info("state", "Hold 上")
end
if flag & 0x0002 == 0x0002 then
action = 2
XYOffsetDown(1)
log.info("state", "Hold 下")
end
if flag & 0x0004 == 0x0004 then
action = 3
XYOffsetLeft(1)
log.info("state", "Hold 左")
end
if flag & 0x0008 == 0x0008 then
action = 4
XYOffsetRight(1)
log.info("state", "Hold 右")
end
if flag & 0x0010 == 0x0010 then
log.info("state", "Hold 中")
end
--有按键动作
if action > 0 then
lcd.drawCircle(x,y,1,0x0CE0)
end
end6、松开操作函数
local function KeyRelease(flag)
local action = 0
if flag & 0x0001 == 0x0001 then
action = 1
log.info("state", "Release 上")
end
if flag & 0x0002 == 0x0002 then
action = 2
log.info("state", "Release 下")
end
if flag & 0x0004 == 0x0004 then
action = 3
log.info("state", "Release 左")
end
if flag & 0x0008 == 0x0008 then
action = 4
log.info("state", "Release 右")
end
if flag & 0x0010 == 0x0010 then
action = 5
log.info("state", "Release 中")
end
--有按键动作
if action > 0 then
end
end7、按键扫描（20ms扫描一次）
sys.taskInit(function()
while 1 do
local state = 0
if gpio.get(pin_key_up)==0 then
state = state | 0x0001
end
if gpio.get(pin_key_down)==0 then
state = state | 0x0002
end
if gpio.get(pin_key_left)==0 then
state = state | 0x0004
end
if gpio.get(pin_key_right)==0 then
state = state | 0x0008
end
if gpio.get(pin_key_center)==0 then
state = state | 0x0010
end
if state==0 then
holdcnt = 0
if laststate ~= 0 then
KeyRelease(laststate)
laststate = 0
end
else
if laststate==0 then
KeyPass(state)
end
holdcnt = holdcnt + 1
if holdcnt > 50 then
holdcnt = 45
end
--长按
if state ~= laststate then
holdcnt=0
end
if holdcnt==49 then
KeyPassHold(state)
end
laststate = state
end
sys.wait(20)
end
end)
-- 用户代码已结束---------------------------------------------
-- 结尾总是这一句
sys.run()
-- sys.run()之后后面不要加任何语句!!!!!
三、演示效果
Air101-LCD扩展板
版权声明：本文为CSDN博主「Denuin」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/Denuin/article/details/121738704
目录
一、接口连接
| 开发板引脚 | LCD / KEY 引脚 | GPIO编号 | 备注 |
| PB_00 | BL | 16 | |
| PB_04 | CS | 20 | |
| PB_01 | DC | 17 | |
| PB_03 | RES | 19 | |
| PB_05 | SDA | 21 | |
| PB_02 | SCL | 18 | |
| PA_00 | LKEY | 0 | 代码里pin_key_right |
| PA_07 | UPKEY | 7 | 代码里pin_key_up |
| PA_04 | CENTER | 4 | 代码里pin_key_center |
| PA_01 | DWKEY | 1 | 代码里pin_key_left |
| PB_11 | RKEY | 27 | 代码里pin_key_down |
二、测试程序
1、LCD显示demo
log.info("lcd.init",
lcd.init("st7735s",{port = "device",pin_dc = 17, pin_pwr = 7,pin_rst = 19,direction = 2,w = 160,h = 80,xoffset = 1,yoffset = 26},spi_lcd))
log.info("lcd.drawLine", lcd.drawLine(20,20,150,20,0x001F))
log.info("lcd.drawRectangle", lcd.drawRectangle(20,40,120,70,0xF800))
log.info("lcd.drawCircle", lcd.drawCircle(50,50,20,0x0CE0))
--显示之前先设置为中文字体
lcd.setFont(lcd.font_opposansm12)
lcd.drawStr(20,20,"LuarOS!!")2、按键引脚定义
--按键引脚定义
local pin_key_up = 7
local pin_key_down = 27
local pin_key_left = 1
local pin_key_right = 0
local pin_key_center = 4
gpio.setup(pin_key_up, nil, gpio.PULLUP)
gpio.setup(pin_key_down, nil, gpio.PULLUP)
gpio.setup(pin_key_left, nil, gpio.PULLUP)
gpio.setup(pin_key_right, nil, gpio.PULLUP)
gpio.setup(pin_key_center, nil, gpio.PULLUP)3、变量及XY坐标偏移方法
local x = 50
local y = 50
local updateflag = 0
local laststate = 0
local holdcnt = 0
local function XYOffsetUp(value)
y = y - value
end
local function XYOffsetDown(value)
y = y + value
end
local function XYOffsetLeft(value)
x = x - value
end
local function XYOffsetRight(value)
x = x + value
end4、单击操作函数
local function KeyPass(flag)
local action = 0
if flag & 0x0001 == 0x0001 then
log.info("state", "Pass 上")
XYOffsetUp(1)
action = 1
end
if flag & 0x0002 == 0x0002 then
log.info("state", "Pass 下")
XYOffsetDown(1)
action = 2
end
if flag & 0x0004 == 0x0004 then
log.info("state", "Pass 左")
XYOffsetLeft(1)
action = 3
end
if flag & 0x0008 == 0x0008 then
log.info("state", "Pass 右")
XYOffsetRight(1)
action = 4
end
if flag & 0x0010 == 0x0010 then
x = 50
y = 50
log.info("state", "Pass 中")
lcd.clear()
--显示demo
lcd.drawLine(20,20,150,20,0x001F)
lcd.drawRectangle(20,40,120,70,0xF800)
lcd.drawCircle(50,50,20,0x0CE0)
lcd.drawStr(20,20,"LuarOS!!")
end
if action > 0 then
lcd.drawCircle(x,y,1,0x0CE0)
end
end5、长按操作函数
local function KeyPassHold(flag)
local action = 0
if flag & 0x0001 == 0x0001 then
action = 1
XYOffsetUp(1)
log.info("state", "Hold 上")
end
if flag & 0x0002 == 0x0002 then
action = 2
XYOffsetDown(1)
log.info("state", "Hold 下")
end
if flag & 0x0004 == 0x0004 then
action = 3
XYOffsetLeft(1)
log.info("state", "Hold 左")
end
if flag & 0x0008 == 0x0008 then
action = 4
XYOffsetRight(1)
log.info("state", "Hold 右")
end
if flag & 0x0010 == 0x0010 then
log.info("state", "Hold 中")
end
--有按键动作
if action > 0 then
lcd.drawCircle(x,y,1,0x0CE0)
end
end6、松开操作函数
local function KeyRelease(flag)
local action = 0
if flag & 0x0001 == 0x0001 then
action = 1
log.info("state", "Release 上")
end
if flag & 0x0002 == 0x0002 then
action = 2
log.info("state", "Release 下")
end
if flag & 0x0004 == 0x0004 then
action = 3
log.info("state", "Release 左")
end
if flag & 0x0008 == 0x0008 then
action = 4
log.info("state", "Release 右")
end
if flag & 0x0010 == 0x0010 then
action = 5
log.info("state", "Release 中")
end
--有按键动作
if action > 0 then
end
end7、按键扫描（20ms扫描一次）
sys.taskInit(function()
while 1 do
local state = 0
if gpio.get(pin_key_up)==0 then
state = state | 0x0001
end
if gpio.get(pin_key_down)==0 then
state = state | 0x0002
end
if gpio.get(pin_key_left)==0 then
state = state | 0x0004
end
if gpio.get(pin_key_right)==0 then
state = state | 0x0008
end
if gpio.get(pin_key_center)==0 then
state = state | 0x0010
end
if state==0 then
holdcnt = 0
if laststate ~= 0 then
KeyRelease(laststate)
laststate = 0
end
else
if laststate==0 then
KeyPass(state)
end
holdcnt = holdcnt + 1
if holdcnt > 50 then
holdcnt = 45
end
--长按
if state ~= laststate then
holdcnt=0
end
if holdcnt==49 then
KeyPassHold(state)
end
laststate = state
end
sys.wait(20)
end
end)
-- 用户代码已结束---------------------------------------------
-- 结尾总是这一句
sys.run()
-- sys.run()之后后面不要加任何语句!!!!!
三、演示效果
Air101-LCD扩展板
版权声明：本文为CSDN博主「Denuin」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/Denuin/article/details/121738704
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