ESP32: Difference between revisions
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esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 460800 write_flash -z 0x1000 esp32-idf4-20191220-v1.12.bin |
esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 460800 write_flash -z 0x1000 esp32-idf4-20191220-v1.12.bin |
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= Projects = |
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== I2C LCD == |
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Source: [https://github.com/micropython-Chinese-Community/mpy-lib/tree/master/lcd/I2C_LCD1602 github.com] |
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*Download the below library file from below link & upload it to ESP32: |
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https://github.com/micropython-Chinese-Community/mpy-lib/tree/master/lcd/I2C_LCD1602 |
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- mp_i2c_lcd1602.py |
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*Connect the ESP32 to I2C LCD-1602 as below: |
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P5 ---------------- SCL |
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P4 ---------------- SDA |
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GND --------------- GND |
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5V ---------------- VCC |
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* Testing the LCD: |
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<syntaxhighlight lang="python"> |
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i2c = I2C(1, sda=Pin(4), scl=Pin(5)) |
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i2c.scan() |
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lcd = LCD1602(i2c) |
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lcd.puts("Initializing..",0,0) |
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</syntaxhighlight> |
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*Print the output on the LCD: |
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<syntaxhighlight lang="python"> |
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from machine import I2C, Pin |
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from mp_i2c_lcd1602 import LCD1602 |
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from time import sleep_ms |
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i2c = I2C(1, sda=Pin(9), scl=Pin(10)) |
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LCD = LCD1602(i2c) |
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LCD.puts("I2C LCD1602") |
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n = 0 |
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while 1: |
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LCD.puts(n, 0, 1) |
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n += 1 |
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sleep_ms(1000) |
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</syntaxhighlight> |
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