鹹魚ZTMR實例—PS2手柄
主控板:ZTMR開發板
PS2手柄
PS2 手柄是遊戲機的遙控手柄。psx 系列遊戲主機在全球很是暢銷。不知什麼時候便有人打起 PS2手柄的主意,破解了通訊協議,使得手柄可以接在其他器件上遙控使用,比如遙控我們熟悉的機器人。突出的特點是現在這款手柄性價比極高。按鍵豐富,方便擴展到其它應用中。
PS2 由手柄與接收器兩部分組成,手柄主要負責發送按鍵信息。都接通電源並打開手柄開關時,手柄與接收器自動配對連接,在未配對成功的狀態下,接收器綠燈閃爍,手柄上的燈也會閃爍,配對成功後,接收器上綠燈常亮,手柄上燈也常亮,這時可以按“MODE”鍵,選擇手柄發送模式,紅燈模式:遙杆輸出模擬值;綠燈模式:遙杆對應上面四個按鍵,只有四個極限方向對應。
接收器和主機(單片機)相連,實現主機與手柄之間的通訊。
接收器引腳輸出:
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
---|---|---|---|---|---|---|---|---|
DI/DAT | DO/CMD | NC | GND | VDD | CS/SEL | CLK | NC | ACK |
例程:串口打印PS2按鈕信息
main.py
# main.py -- put your code here!
import ps2
def main():
while True:
pyb.delay(100)
print('xycs:',ps2.ps2_key())
if __name__ == '__main__':
main()
網上已經有開源的PS2手柄定義了, 我們保存成ps2.py文件直接保存起來就好了
ps2.py
from machine import Pin
import time
def ps2_test():
print('test ok')
di=Pin(Pin.cpu.C0,Pin.IN,Pin.PULL_DOWN)
do=Pin(Pin.cpu.C1,Pin.OUT, )
cs=Pin(Pin.cpu.C2,Pin.OUT,) #PULL_UP
clk=Pin(Pin.cpu.C3,Pin.OUT,)
#D0 16 dat=DI
#D2 04 cmd=DO
#D3 0 CS =CS
#D4 02 CLK=CLK
def DO_H():
do.value(1)
def DO_L():
do.value(0)
def CS_H ():
cs.value(1)
def CS_L():
cs.value(0)
def CLK_H ():
clk.value(1)
def CLK_L():
clk.value(0)
#常量按鈕
PSB_SELECT = 1
PSB_L3 = 2
PSB_R3 = 3
PSB_START = 4
PSB_PAD_UP = 5
PSB_PAD_RIGHT = 6
PSB_PAD_DOWN = 7
PSB_PAD_LEFT = 8
PSB_L2 = 9
PSB_R2 = 10
PSB_L1 = 11
PSB_R1 = 12
PSB_GREEN = 13
PSB_RED = 14
PSB_BLUE = 15
PSB_PINK = 16
PSB_TRIANGLE = 13
PSB_CIRCLE = 14
PSB_CROSS = 15
PSB_SQUARE = 26
# 左搖桿
PSS_RX = 5
PSS_RY = 6
PSS_LX = 7
PSS_LY = 8
mask=[
PSB_SELECT,
PSB_L3,
PSB_R3 ,
PSB_START,
PSB_PAD_UP,
PSB_PAD_RIGHT,
PSB_PAD_DOWN,
PSB_PAD_LEFT,
PSB_L2,
PSB_R2,
PSB_L1,
PSB_R1 ,
PSB_GREEN,
PSB_RED,
PSB_BLUE,
PSB_PINK]
comd=[0x01,0x42]
data=[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00]
def ps2_init():
CLK_H()
DO_H()
time.sleep_ms(10)
def ps2_cmd(cmd):
global data
data[1]=0
for ref in (1,2,4,8,16,32,64,128):
if ( ref & cmd):
DO_H()
else:
DO_L()
CLK_H ()
time.sleep_us(50)
CLK_L()
time.sleep_us(50)
CLK_H ()
if(di.value()==1):
data[1]=ref|data[1]
def ps2_red():
global data
global comd
CS_L()
ps2_cmd(comd[0])
ps2_cmd(comd[1])
CS_H()
if(data[1]==57):
return 0#red light
else:
return 1#not red
def ps2_read():
global data
global comd
byte=0
ref=0x01
CS_L()
ps2_cmd(comd[0])
ps2_cmd(comd[1])
for byte in (2,3,4,5,6,7,8):
for ref in (1,2,4,8,16,32,64,128):
CLK_H ()
CLK_L()
time.sleep_us(50)
CLK_H ()
if(di.value()==1):
data[byte]= ref|data[byte]
time.sleep_us(50)
CS_H ()
def ps2_clear():#ok
global data
for i in range(0,9,1):
data[i]=0
def ps2_andata(button):
global data
return data[button]
def ps2_key():
global data
global mask
ps2_clear()
ps2_read()
handkey=(data[4]<<8)|data[3]
for index in (0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15):
if (( handkey&(1<<(mask[index]-1)))==0):
return index+2
return 0
串口效果