Touchscreen driver POC

Example documentation
2026-05-07 16:28:08 -07:00
parent c0ad8306a7
commit a125f45b34
201 changed files with 19783 additions and 34 deletions
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+# /*****************************************************************************
+# * | File        :	  epdconfig.py
+# * | Author      :   Waveshare team
+# * | Function    :   Hardware underlying interface
+# * | Info        :
+# *----------------
+# * | This version:   V1.0
+# * | Date        :   2020-12-21
+# * | Info        :   
+# ******************************************************************************
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documnetation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to  whom the Software is
+# furished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+
+import gpiozero
+import time
+from smbus import SMBus
+import spidev
+import ctypes
+import logging
+
+# e-Paper
+EPD_RST_PIN     = 17
+EPD_DC_PIN      = 25
+EPD_CS_PIN      = 8
+EPD_BUSY_PIN    = 24
+
+# TP
+TRST    = 22
+INT     = 27
+
+spi     = spidev.SpiDev(0, 0)
+address = 0x0
+# address = 0x14
+# address = 0x48
+bus     = SMBus(1)
+
+
+GPIO_RST_PIN    = gpiozero.LED(EPD_RST_PIN)
+GPIO_DC_PIN     = gpiozero.LED(EPD_DC_PIN)
+# GPIO_CS_PIN     = gpiozero.LED(EPD_CS_PIN)
+GPIO_TRST       = gpiozero.LED(TRST)
+
+GPIO_BUSY_PIN   = gpiozero.Button(EPD_BUSY_PIN, pull_up = False)
+GPIO_INT        = gpiozero.Button(INT, pull_up = False)
+
+
+def digital_write(pin, value):
+    if pin == EPD_RST_PIN:
+        if value:
+            GPIO_RST_PIN.on()
+        else:
+            GPIO_RST_PIN.off()
+    elif pin == EPD_DC_PIN:
+        if value:
+            GPIO_DC_PIN.on()
+        else:
+            GPIO_DC_PIN.off()
+    # elif pin == EPD_CS_PIN:
+    #     if value:
+    #         GPIO_CS_PIN.on()
+    #     else:
+    #         GPIO_CS_PIN.off()
+    elif pin == TRST:
+        if value:
+            GPIO_TRST.on()
+        else:
+            GPIO_TRST.off()
+
+def digital_read(pin):
+    if pin == EPD_BUSY_PIN:
+        return GPIO_BUSY_PIN.value
+    elif pin == INT:
+        return GPIO_INT.value
+
+def delay_ms(delaytime):
+    time.sleep(delaytime / 1000.0)
+
+def spi_writebyte(data):
+    spi.writebytes(data)
+
+def spi_writebyte2(data):
+    spi.writebytes2(data)
+
+def i2c_writebyte(reg, value):
+    bus.write_word_data(address, (reg>>8) & 0xff, (reg & 0xff) | ((value & 0xff) << 8))
+
+def i2c_write(reg):
+    bus.write_byte_data(address, (reg>>8) & 0xff, reg & 0xff)
+
+def i2c_readbyte(reg, len):
+    i2c_write(reg)
+    rbuf = []
+    for i in range(len):
+        rbuf.append(int(bus.read_byte(address)))
+    return rbuf
+
+def module_init():
+   
+    spi.max_speed_hz = 10000000
+    spi.mode = 0b00
+    
+    return 0
+
+def module_exit():
+    logging.debug("spi end")
+    spi.close()
+    bus.close()
+        
+    logging.debug("close 5V, Module enters 0 power consumption ...")
+    GPIO_RST_PIN.off()
+    GPIO_DC_PIN.off()
+    # GPIO_CS_PIN.off()
+    GPIO_TRST.off()
+
+    GPIO_RST_PIN.close()
+    GPIO_DC_PIN.close()
+    # GPIO_CS_PIN.close()
+    GPIO_TRST.close()
+
+    GPIO_BUSY_PIN.close()
+    GPIO_INT.close()
+
+
+### END OF FILE ###