add badge.i2c_read_reg() and badge.i2c_write_reg()
add badge.i2c_read_reg() and badge.i2c_write_reg()

badge.i2c_read_reg(i2c_addr, reg_idx, data_len)

badge.i2c_write_reg(i2c_addr, reg_idx, bytestring)

SHA2017-badge/micropython-esp32,SHA2017-badge/micropython-esp32,SHA2017-badge/micropython-esp32,SHA2017-badge/micropython-esp32,SHA2017-badge/micropython-esp32