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Commitf2740c1

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committed
Finally got the GT911 to work properly!!!!
1 parentc7559e6 commitf2740c1

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2 files changed

+69
-50
lines changed

2 files changed

+69
-50
lines changed

‎driver/frozen/other/i2c.py‎

Lines changed: 22 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -3,9 +3,7 @@
33

44
classI2CBus(object):
55

6-
_busses= {}
7-
8-
def__init__(self,scl,sda,freq=400000,host=None,timeout=50000,use_locks=False):
6+
def__init__(self,scl,sda,freq=400000,host=None,use_locks=False):
97
ifhostisNone:
108
if (scl,sda)== (19,18):
119
host=0
@@ -16,14 +14,12 @@ def __init__(self, scl, sda, freq=400000, host=None, timeout=50000, use_locks=Fa
1614
host,
1715
scl=machine.Pin(scl),
1816
sda=machine.Pin(sda),
19-
freq=freq,
20-
timeout=timeout
17+
freq=freq
2118
)
2219

2320
ifuse_locks:
2421
import_thread
2522
self._lock=_thread.allocate_lock()
26-
2723
else:
2824
classLock(object):
2925

@@ -51,6 +47,18 @@ def scan(self):
5147
self._lock.release()
5248
returndata
5349

50+
defstart(self):
51+
self._bus.start()
52+
53+
defstop(self):
54+
self._bus.stop()
55+
56+
defreadinto(self,buf,nack=True):
57+
self._bus.readinto(buf,nack)
58+
59+
defwrite(self,buf):
60+
self._bus.write(buf)
61+
5462
defreadfrom(self,addr,nbytes,stop=True):
5563
returnself._bus.readfrom(addr,nbytes,stop)
5664

@@ -72,6 +80,9 @@ def readfrom_mem_into(self, addr, memaddr, buf, addrsize=8):
7280
defwriteto_mem(self,addr,memaddr,buf,addrsize=8):
7381
self._bus.writeto_mem(addr,memaddr,buf,addrsize=addrsize)
7482

83+
defadd_device(self,dev_id,reg_bits=8):
84+
returnI2CDevice(self,dev_id,reg_bits)
85+
7586

7687
classI2CDevice(object):
7788

@@ -107,13 +118,13 @@ def write_mem(self, memaddr, buf):
107118
addrsize=self._reg_bits
108119
)
109120

110-
defread(self,num_bytes=None,buf=None,stop=True):
121+
defread(self,num_bytes=None,buf=None):
111122
withself._bus:
112123
ifnum_bytesisnotNone:
113-
returnself._bus.readfrom(self.dev_id,num_bytes,stop)
124+
returnself._bus.readfrom(self.dev_id,num_bytes)
114125
else:
115-
self._bus.readfrom_into(self.dev_id,buf,stop)
126+
self._bus.readfrom_into(self.dev_id,buf)
116127

117-
defwrite(self,buf,stop=True):
128+
defwrite(self,buf):
118129
withself._bus:
119-
self._bus.writeto(self.dev_id,buf,stop)
130+
self._bus.writeto(self.dev_id,buf)

‎driver/indev/gt911.py‎

Lines changed: 47 additions & 39 deletions
Original file line numberDiff line numberDiff line change
@@ -6,11 +6,16 @@
66

77
frommicropythonimportconst
88
importpointer_framework
9-
importi2c
109
importmachine
1110
importtime
1211

1312

13+
_CMD_REG=const(0x8040)
14+
_CMD_CHECK_REG=const(0x8046)
15+
_CMD_RECEIVE=const(0x22)
16+
17+
_ESD_CHECK_REG=const(0x8041)
18+
1419
_CONFIG_START_REG=const(0x8047)
1520

1621
_X_OUTPUT_MAX_LOW_POS=const(0x01)
@@ -30,13 +35,9 @@
3035

3136
_CONFIG_FRESH_REG=const(0x8100)
3237

33-
_READ_XY_REG=const(0x814E)
38+
_STATUS_REG=const(0x814E)
3439

35-
_POINT_1_REG=const(0x814F)
36-
_POINT_2_REG=const(0x8157)
37-
_POINT_3_REG=const(0x815F)
38-
_POINT_4_REG=const(0x8167)
39-
_POINT_5_REG=const(0x816F)
40+
_POINT_1_REG=const(0x8150)
4041

4142
_PRODUCT_ID_REG=const(0x8140)
4243
_FIRMWARE_VERSION_REG=const(0x8144)
@@ -45,17 +46,23 @@
4546
_X_CORD_RES_REG=const(0x8146)
4647
_Y_CORD_RES_REG=const(0x8148)
4748

49+
4850
_ADDR1=const(0x5D)
4951
_ADDR2=const(0x14)
5052

5153

54+
# 0-15 * 32
55+
_VER_SPACE_REG=const(0x805B)# low 4 bits are bottom and hight is top
56+
_HOR_SPACE_REG=const(0x805C)# low 4 biits is right and high is left
57+
58+
5259
classGT911(pointer_framework.PointerDriver):
5360

5461
def__init__(self,i2c_bus,reset_pin=None,interrupt_pin=None,touch_cal=None):
55-
buf=self._buf=bytearray(7)
56-
mv=self._mv=memoryview(self._buf)
57-
58-
self._i2c=i2c.I2CDevice(i2c_bus,_ADDR1)
62+
self._buf=bytearray(6)
63+
self._mv=memoryview(self._buf)
64+
self._i2c_bus=i2c_bus
65+
self._i2c=i2c_bus.add_device(_ADDR1,16)
5966

6067
ifisinstance(reset_pin,int):
6168
reset_pin=machine.Pin(reset_pin,machine.Pin.OUT)
@@ -68,20 +75,27 @@ def __init__(self, i2c_bus, reset_pin=None, interrupt_pin=None, touch_cal=None):
6875

6976
# self.touch_reset()
7077

71-
self._i2c.read_mem(_PRODUCT_ID_REG,buf=mv[:4])
72-
print('Product id:',buf[:4])
78+
self._i2c.read_mem(_PRODUCT_ID_REG,buf=self._mv[:4])
79+
print('Product id:',self._buf[:4])
80+
81+
self._i2c.read_mem(_FIRMWARE_VERSION_REG,buf=self._mv[:2])
82+
print('Firmware version:',hex(self._buf[0]+ (self._buf[1]<<8)))
83+
84+
self._i2c.read_mem(_VENDOR_ID_REG,buf=self._mv[:1])
85+
print('Vendor id:',hex(self._buf[0]))
7386

74-
self._i2c.read_mem(_FIRMWARE_VERSION_REG,buf=mv[:2])
75-
print('Firmware version:',hex(buf[0]+ (buf[1]<<8)))
87+
self._i2c.read_mem(_X_CORD_RES_REG,buf=self._mv[:2])
88+
print('Configured width:',self._buf[0]+ (self._buf[1]<<8))
7689

77-
self._i2c.read_mem(_VENDOR_ID_REG,buf=mv[:1])
78-
print('Vendor id:',hex(buf[0]))
90+
self._i2c.read_mem(_Y_CORD_RES_REG,buf=self._mv[:2])
91+
print('Configured height:',self._buf[0]+ (self._buf[1]<<8))
7992

80-
self._i2c.read_mem(_X_CORD_RES_REG,buf=mv[:2])
81-
print('Configured width:',buf[0]+ (buf[1]<<8))
93+
self._buf[0]=0x00
94+
self._i2c.write_mem(_ESD_CHECK_REG,buf=self._mv[:1])
8295

83-
self._i2c.read_mem(_Y_CORD_RES_REG,buf=mv[:2])
84-
print('Configured height:',buf[0]+ (buf[1]<<8))
96+
self._buf[0]=_CMD_RECEIVE
97+
self._i2c.write_mem(_CMD_CHECK_REG,buf=self._mv[:1])
98+
self._i2c.write_mem(_CMD_REG,buf=self._mv[:1])
8599

86100
super().__init__(touch_cal=touch_cal)
87101

@@ -132,28 +146,22 @@ def _reflash_config(self, width, height):
132146
self._i2c.write_mem(_CONFIG_FRESH_REG,buf=mv[:1])
133147

134148
def_get_coords(self):
135-
buf=self._buf
136-
mv=self._mv
149+
self._i2c.read_mem(_STATUS_REG,buf=self._mv[:1])
150+
touch_cnt=self._buf[0]&0x0F
137151

138-
self._i2c.read_mem(_READ_XY_REG,buf=mv[:1])
152+
ifself._buf[0]&0x80ortouch_cnt<6:
153+
self._buf[0]=0x00
154+
self._i2c.write_mem(_STATUS_REG,buf=self._mv[:1])
139155

140-
if (buf[0]&0x80)==0x00:
141-
buf[0]=0x00
142-
self._i2c.write_mem(_READ_XY_REG,buf=mv[:1])
143-
returnNone
144-
else:
145-
touch_cnt=buf[0]&0x0F
146-
iftouch_cnt>5ortouch_cnt==0:
147-
buf[0]=0x00
148-
self._i2c.write_mem(_READ_XY_REG,buf=mv[:1])
149-
returnNone
156+
iftouch_cnt==1:
157+
self._i2c.read_mem(_POINT_1_REG,buf=self._mv)
150158

151-
self._i2c.read_mem(_READ_XY_REG,buf=mv)
159+
x=self._buf[0]+ (self._buf[1]<<8)
160+
y=self._buf[2]+ (self._buf[3]<<8)
152161

153-
x=buf[1]+ (buf[2]<<8)
154-
y=buf[3]+ (buf[4]<<8)
162+
print(x,y)
155163

156-
buf[0]=0x00
157-
self._i2c.write_mem(_READ_XY_REG,buf=mv[:1])
164+
self._buf[0]=0x00
165+
self._i2c.write_mem(_STATUS_REG,buf=self._mv[:1])
158166

159167
returnself.PRESSED,x,y

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