Multiple UART1 ports displayed after 3.1.6 upgrade

[carloscampos775]

After upgrading my SP Racing F3 EVO FC to 3.1.6 the configurator is now displaying multiple UART1 ports

[mikeller]

@jflyper: There seems to be a problem in how the data structures for softserial port are initialised:

CLI

# serial
serial 20 1 115200 57600 0 115200
serial 0 64 115200 57600 0 115200
serial 1 0 115200 57600 0 115200
serial 2 0 115200 57600 0 115200
serial 0 0 115200 57600 0 115200
serial 0 0 115200 57600 0 115200

(The 0 identifier is the same with the SOFTSERIAL feature enabled or disabled.)

[TheCluster]

In 3.1.6 software serials for SP Racing F3 EVO was disabled, but counter of serial ports wasn't changed.

You may build firmware from sources. Download source for 3.1.6 and make simple changes:

in file src/main/target/SPRACINGF3EVO/target.h

replace #define SERIAL_PORT_COUNT 6 to #define SERIAL_PORT_COUNT 4

Then rebuild firmware and reflash your FC.

[mikeller]

@TheCluster: You're right, good spot.

Also, this code is confusing to say the least:

#define USE_SOFTSERIAL1
#define USE_SOFTSERIAL2

#define SERIAL_PORT_COUNT       6

#define USE_ESCSERIAL
#define ESCSERIAL_TIMER_TX_HARDWARE 0 // PWM 1

#undef USE_SOFTSERIAL1
#undef USE_SOFTSERIAL2

[jflyper]

SOFTSERIALx for EVO will be resurrected in 3.1.7.

89e31d2

[mikeller]

@jflyper: Unfortunately I've had to disable it again, since the firmware wasn't fitting into the flash any more after merging some bugfixes.

[jflyper]

😭