SM6FBQ / HackRF clone - History

Merge pull request #1172 from martinling/amp-startup

Fix initial state of RF path GPIOs.

Merge pull request #1167 from martinling/tx-sync-output

Don't start baseband streaming until TX buffer is first filled.

document hardware triggering

This replaces outdated documentation of an older trigger mechanism.

Initialise rf_path->switchctrl to SWITCHCTRL_SAFE.

This was previously never being initialised.

Remove extra call to switchctrl_set and global switchctrl variable.

This call is not required since the GPIOs are already configured in
rf_path_pin_setup(). The global switchctrl is not used anywhere else.

Initialise RF path GPIOs to safe settings.

Previously these calls were leaving the amplifiers on, since the
control settings passed were missing SWITCHCTRL_NO_TX_AMP_PWR and
SWITCHCTRL_NO_RX_AMP_PWR. Use the predefined SWITCHCTRL_SAFE here.

Also move these calls before setting the GPIO pins to output mode,
to avoid driving them to the wrong states briefly first.

Don't start baseband streaming until TX buffer is first filled.