Project Components

STM32 Microcontroller
FlySky FS - i6x (OpenI6x Software)
FS-iA#B AFHDS2A (# : 6 or 10)

Features

Can receive 14 Channels of the FlySky FS - i6x
Can send up to 16 sensor measurements
Only iBus ports are used, minimazing the pin usage
Each Servo and Sensor iBus requires one U(S)ART peripheral (Half-Dublex)
Every transmission and reception is handled by state machine guided DMA operations, minimazing CPU load

Documentation

Example Project

SMT32F103C8T6 Based Example Project

14 Channel Servo Reception (DMA)
16 Channel Sensor Transmission (DMA)
USART1 (iBus - Sensor) (Half-Dublex)
USART2 (iBus - Servo) (Half-Dublex)
Prints Servo Channels over SWO ITM

FlowCharts

SystemCore

RCC

HSE -> Crystal / Ceramic Resonator

SYS

Debug -> Trace Asynchronous SW
Timebase Source -> SysTick

Connectivity

USART1 (iBus - Sensor)

Mode -> Single Wire (Half-Dublex) (Transfer and Receive)
BoudRate -> 115200 (8N1)
DMA_RX -> Enabled
DMA_TX -> Enabled
NVIC -> USART1 Global Interrupt Enabled

USART2 (iBus - Servo)

Mode -> Single Wire (Half-Dublex) (Only Receive)
BoudRate -> 115200 (8N1)
DMA_RX -> Enabled

Project Manager -> Advanced Settings

Register CallBacks -> UART -> Enabled

Project Manager -> Code Generator

Generate peripheral initilazation as pair of .c/.h files per peripheral -> Enabled

Step-by-step Implimentation

OpenI6x Software for FlySky - i6x
Configure Microcontroller Peripherals according to Example Project
Copy Telemetry.c/.h Files to Inc and Src Folders
Add ***_UART_Telemetry_Init(&huart) Functions in USER_CODE_2 Field
Add Global TelemetrySensorStruct SensorList[NUM_SENSOR] Array According to iBus Sensor Types
Edit NUM_SENSOR @ Telemetry.h File