CircuitPython Driver for TEA5767 FM Radio Module

This driver is the CircuitPython port of the MicroPython version with essentially the same interface. See the MicroPython docs for instruction details.

This driver has been tested on Adafruit ItsyBitsy M0, Adafruit Metro M4 and RPi Pico running CircuitPython 7.2.5

Import and Initialize

Copy either TEA5767.py or TEA5767.mpy (recommended) into the lib directory of your device drive.

To import and initialize the module:

import busio, board
from TEA5767 import Radio
    
i2c = busio.I2C(scl=board.SCL, sda=board.SDA, frequency=400000)
radio = Radio(i2c)
# or
radio = Radio(i2c, freq=106.7)

print(f'Frequency: FM {radio.frequency}')
print(f'Ready: {radio.is_ready}')
print(f'Stereo: {radio.is_stereo}')
print(f'DC level: {radio.signal_adc_level}')

Change the pins since some boards may not have SCL and SDA-named pins.

A Simplified CircuitPython Version Without Using This Driver

This is the same one as in the MicroPython docs but use the CircuitPython I2C object instead:

import busio, board

i2c = busio.I2C(scl=board.SCL, sda=board.SDA, frequency=400000)

def radio_frequency(freq):
    freqB = 4 * (freq * 1000000 + 225000) / 32768
    while not i2c.try_lock():
        pass
    i2c.writeto(0x60, bytearray([int(freqB) >> 8, int(freqB) & 0XFF, 0X90, 0X1E, 0X00]))
    i2c.unlock()
    
radio_frequency(106.7)