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Commit2e952fc

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boot_fri3d2024.py: add support for buttons and joysticks
1 parent093da7b commit2e952fc

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-12
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1 file changed

+100
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‎internal_filesystem/boot_fri3d2024.py‎

Lines changed: 100 additions & 12 deletions
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,5 @@
11
# Hardware initialization for Fri3d Camp 2024 Badge
2+
current_hardware="fri3d-2024"
23

34
frommachineimportPin,SPI
45
importst7789
@@ -14,24 +15,16 @@
1415

1516
# Pin configuration
1617
SPI_BUS=2
17-
#SPI_FREQ = 40000000
18-
#SPI_BUS = 1
19-
SPI_FREQ=20000000
18+
SPI_FREQ=40000000
19+
#SPI_FREQ = 20000000 # also works but I guess higher is better
2020
LCD_SCLK=7
2121
LCD_MOSI=6
2222
LCD_MISO=8
2323
LCD_DC=4
2424
LCD_CS=5
25-
#LCD_BL = 1
25+
#LCD_BL = 1 # backlight can't be controlled on this hardware
2626
LCD_RST=48
2727

28-
#I2C_BUS = 0
29-
#I2C_FREQ = 100000
30-
#TP_SDA = 48
31-
#TP_SCL = 47
32-
#TP_ADDR = 0x15
33-
#TP_REGBITS = 8
34-
3528
TFT_HOR_RES=296
3629
TFT_VER_RES=240
3730

@@ -48,7 +41,6 @@
4841
cs=LCD_CS
4942
)
5043

51-
#rs=LCD_RST
5244
# lv.color_format_get_size(lv.COLOR_FORMAT.RGB565) = 2 bytes per pixel * 320 * 240 px = 153600 bytes
5345
# The default was /10 so 15360 bytes.
5446
# /2 = 76800 shows something on display and then hangs the board
@@ -88,4 +80,100 @@
8880
display.set_rotation(lv.DISPLAY_ROTATION._270)# must be done after initializing display and creating the touch drivers, to ensure proper handling
8981
display.set_params(0x36,bytearray([0x28]))
9082

83+
# Button and joystick handling code:
84+
frommachineimportADC,Pin
85+
86+
btn_x=Pin(38,Pin.IN,Pin.PULL_UP)# X
87+
btn_y=Pin(41,Pin.IN,Pin.PULL_UP)# Y
88+
btn_a=Pin(39,Pin.IN,Pin.PULL_UP)# A
89+
btn_b=Pin(40,Pin.IN,Pin.PULL_UP)# B
90+
btn_start=Pin(0,Pin.IN,Pin.PULL_UP)# START
91+
btn_menu=Pin(45,Pin.IN,Pin.PULL_UP)# START
92+
93+
ADC_KEY_MAP= [
94+
{'key':'UP','unit':1,'channel':2,'min':3072,'max':4096},
95+
{'key':'DOWN','unit':1,'channel':2,'min':0,'max':1024},
96+
{'key':'RIGHT','unit':1,'channel':0,'min':3072,'max':4096},
97+
{'key':'LEFT','unit':1,'channel':0,'min':0,'max':1024},
98+
]
99+
100+
# Initialize ADC for the two channels
101+
adc_up_down=ADC(Pin(3))# ADC1_CHANNEL_2 (GPIO 33)
102+
adc_up_down.atten(ADC.ATTN_11DB)# 0-3.3V range
103+
adc_left_right=ADC(Pin(1))# ADC1_CHANNEL_0 (GPIO 36)
104+
adc_left_right.atten(ADC.ATTN_11DB)# 0-3.3V range
105+
106+
defread_joystick():
107+
# Read ADC values
108+
val_up_down=adc_up_down.read()
109+
val_left_right=adc_left_right.read()
110+
111+
# Check each key's range
112+
formappinginADC_KEY_MAP:
113+
adc_val=val_up_downifmapping['channel']==2elseval_left_right
114+
ifmapping['min']<=adc_val<=mapping['max']:
115+
returnmapping['key']
116+
returnNone# No key triggered
117+
118+
119+
# Read callback
120+
# Warning: This gets called several times per second, and if it outputs continuous debugging on the serial line,
121+
# that will break tools like mpremote from working properly to upload new files over the serial line, thus needing a reflash.
122+
defkeypad_read_cb(indev,data):
123+
data.continue_reading=False# No more data to read
124+
# Check GPIOs and set key/state (only one key at a time)
125+
ifbtn_x.value()==0:
126+
data.key=lv.KEY.ESC
127+
data.state=lv.INDEV_STATE.PRESSED
128+
mpos.ui.back_screen()
129+
elifbtn_y.value()==0:
130+
data.key=lv.KEY.ESC
131+
data.state=lv.INDEV_STATE.PRESSED
132+
mpos.ui.back_screen()
133+
elifbtn_a.value()==0:
134+
#print("A pressed")
135+
data.key=lv.KEY.ENTER
136+
data.state=lv.INDEV_STATE.PRESSED
137+
elifbtn_b.value()==0:
138+
#print("B pressed")
139+
data.key=lv.KEY.ENTER
140+
data.state=lv.INDEV_STATE.PRESSED
141+
elifbtn_menu.value()==0:
142+
data.key=lv.KEY.HOME
143+
data.state=lv.INDEV_STATE.PRESSED
144+
elifbtn_start.value()==0:
145+
data.key=lv.KEY.END
146+
data.state=lv.INDEV_STATE.PRESSED
147+
else:
148+
data.state=lv.INDEV_STATE.RELEASED
149+
ifdata.state==lv.INDEV_STATE.RELEASED:
150+
joystick=read_joystick()
151+
ifjoystick=="LEFT":
152+
data.key=lv.KEY.PREV
153+
data.state=lv.INDEV_STATE.PRESSED
154+
elifjoystick=="RIGHT":
155+
data.key=lv.KEY.NEXT
156+
data.state=lv.INDEV_STATE.PRESSED
157+
elifjoystick=="UP":
158+
data.key=lv.KEY.UP
159+
data.state=lv.INDEV_STATE.PRESSED
160+
elifjoystick=="DOWN":
161+
data.key=lv.KEY.DOWN
162+
data.state=lv.INDEV_STATE.PRESSED
163+
else:
164+
data.state=lv.INDEV_STATE.RELEASED
165+
166+
167+
group=lv.group_create()
168+
group.set_default()
169+
170+
# Create and set up the input device
171+
indev=lv.indev_create()
172+
indev.set_type(lv.INDEV_TYPE.KEYPAD)
173+
indev.set_read_cb(keypad_read_cb)
174+
indev.set_group(group)
175+
disp=lv.display_get_default()# NOQA
176+
indev.set_display(disp)# different from display
177+
indev.enable(True)# NOQA
178+
91179
print("boot.py finished")

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