T-TWR Plus appears to have sever voltage drops during normal operation,
therefore we cannot use OpenRTX's low voltage warning screen on this
radio.
TG-553
The bug was due to an uninitialized memory being used to configure the
RTX thread, that disabled Tx in a random way by randomly set the
txDisable field.
TG-553
A proper baseband reset is now issued at each startup. Now OpenRTX check
for SA868 responsiveness before proceeding with radio initialization,
eliminating unstable behaviour at boot.
TG-553
Enabled AT+TURBO command on SA868 that switches the baud rate of the
serial communication from 9600 to 115200 to get a more responsive
baseband. Bumped up the required baseband firmware version to
v1.1.0.r20.
TG-553
Modified keyboard mapping to enable macro menu, interface is still
broken as the T-TWR Plus is missing a keyboard.
Now the volume down key, mapped as the MONI button can be also used to
set the squelch level.
TG-553
Enabled Tx capability on T-TWR Plus.
Since Tx requires the SA8x8 to disable the Rx stage, we check that at
least firmware v.1.1.0.r14 is present on the baseband, otherwise we
don't initialize the radio.
TG-553
Add support for initializing SA868 and querying its firmware version,
created a new instance of the AT1846S class that leverages the SA8x8
serial connection as an i2c implementation.
Rx works! In the sense that the RSSI bar behaves as expected, still no
audio.
This commit was contributed by edgetriggered.
TG-553
Begin implementing PMU, now successfully read and write registers, need
to implement button functionality, battery voltage readout, charge
detection etc.
TG-553
Zephyr already provides button support based on gpios. We are mapping
Zephyr keycodes to OpenRTX therefore future targets will only need to
configure their devicetrees to have button support.
Rotary encoder readout leverages the hardware pulse counter. PTT in
this device is also bound to KEY_ESC, that matched the behaviour
observed in many commercial radios.
TG-553
When a new dst callsign is set, the rtx configuration data structure is
updated and this may trigger false setting of the lsfOk variable to true,
causing the M17 info screen to appear for a very small, but noticeable,
amount of time.
Rewritten the conversion law from ADC measurement in mV and normalized
0-255 output, adding a linearization if the pseudo-logarithmic output
curve of the potentiometer.
Signed-off-by: Silvano Seva <silseva@fastwebnet.it>
Niccolò Izzo