Created
October 25, 2022 10:01
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Pico Micropython as I2C Test for Scan and Read/Write
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| from machine import Pin, I2C | |
| import binascii | |
| def i2c_read(i2c,reg): | |
| rx_buf = bytearray(1) | |
| reg_add = bytearray(1) | |
| reg_add[0] = reg | |
| i2c.writeto(0x55, reg_add) | |
| rx_buf = i2c.readfrom(0x55, 1) | |
| return binascii.hexlify(rx_buf) | |
| def i2c_write(i2c, reg, val): | |
| tx_buf = bytearray(2) | |
| tx_buf[0] = reg | |
| tx_buf[1] = val | |
| i2c.writeto(0x55, tx_buf) | |
| i2c = I2C(0, scl=Pin(1), sda=Pin(0), freq=400_000) | |
| print(i2c.scan()) | |
| if (True): | |
| buf = i2c_read(i2c, 0x01) | |
| print(buf) | |
| buf = i2c_read(i2c, 0x02) | |
| print(buf) | |
| buf = i2c_read(i2c, 0x00) | |
| print(buf) | |
| buf = i2c_read(i2c, 0x03) | |
| print(buf) | |
| buf = i2c_write(i2c, 0x00, 0xaa) | |
| buf = i2c_read(i2c, 0x00) | |
| print(buf) | |
| buf = i2c_write(i2c, 0x01, 0xbb) | |
| buf = i2c_read(i2c, 0x01) | |
| print(buf) | |
| buf = i2c_write(i2c, 0x02, 0xcc) | |
| buf = i2c_read(i2c, 0x02) | |
| print(buf) | |
| buf = i2c_write(i2c, 0x03, 0xdd) | |
| buf = i2c_read(i2c, 0x03) | |
| print(buf) | |
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