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API-for-dedicated-devices.md

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radio

SI4735 (FM/AM/LW/SW): Set Audio Path, At java layer, to change the audio path, you can set use the API: AudioManager.setParameters(“fm_route=1”), but remember to set “fm_route=0” when closing # the FM application. alsa_amixer cset numid=42 1 alsa_amixer cset numid=45 1 alsa_amixer cset numid=9 110

  • Enable FM
echo 1 > /sys/bus/i2c/drivers/si4735/1-0063/pwr_ctl
  • Switch to AM, 0 is FM, 1 is AM, 2 is LW, 3 is SW
echo 1 > /sys/bus/i2c/drivers/si4735/1-0063/receiver
  • Set AM frequency to 567Hz, range between 520kHz and 1.71MHz
echo 567 > /sys/bus/i2c/drivers/si4735/1-0063/tune_freq
  • u for seek up, d for seek down
echo u >  /sys/bus/i2c/drivers/si4735/1-0063/seek
  • Power Off
echo 0 > /sys/bus/i2c/drivers/si4735/1-0063/pwr_ctl

Si4707 (WeatherBand)

  • Set Audio Path, At java layer, to change the audio path, you can set use the API:
  • AudioManager.setParameters(“fm_route=1”), but remember to set “fm_route=0” when closing #the FM application.

alsa_amixer cset numid=42 1 alsa_amixer cset numid=45 1 alsa_amixer cset numid=9 110

  • Enable power
echo 1 > /sys/bus/i2c/drivers/si4707/2-0011/pwr_ctl
  • tune Frequency, range between 162.4MHz and 162.55 MHz in 2.5 kHz step
echo 162525 > /sys/bus/i2c/drivers/si4707/2-0011/tune_freq
  • Power Off
echo 0 > /sys/bus/i2c/drivers/si4707/2-0011/pwr_ctl

Walkie talkie

The test command is located at external/uv2w

Use uv2w –s “AT+DMOVER” can get the module version. Other command can refer to the documents “HKT-UV2W 串口AT通信协议VER01_test.pdf”, check https://github.com/onyx-intl/OnyxAndroidSDK/blob/master/docs/at_VER01_test.pdf