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Fork from inav at github. Modified for some special functions needs.
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inav-simplefc/docs/boards/DALRCF405.md

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Board - DALRCF405

The DALRCF405 described here: http://www.dalrcmodel.com/DALRC/plus/view.php?aid=184

This board use the STM32F405RGT6 microcontroller and have the following features:

  • 1024K bytes of flash memory,192K bytes RAM,168 MHz CPU/210 DMIPS

  • The 16M byte SPI flash for data logging

  • USB VCP and boot select button on board(for DFU)

  • Stable voltage regulation,9V/2A DCDC BEC for VTX/camera etc.And could select 5v/9v

  • Serial LED interface(LED_STRIP)

  • VBAT/CURR/RSSI sensors input

  • Suppose IRC Tramp/smart audio/FPV Camera Control/FPORT/telemetry

  • Supports SBus, Spektrum1024/2048, PPM. No external inverters required (built-in).

  • Supports I2C device extend(baro/compass/OLED etc)

  • Supports GPS

Uarts

Value Identifier RX TX Notes
1 USART1 PB7 PA9 PB7 FOR SBUS IN(inverter build in)
2 USART2 PA3 PA2 PAD USE FOR TRAMP/smart audio
3 USART3 PB11 PB10 USE FOR GPS
4 USART4 PA1 PA0 PA0 FOR RSSI/FPORT/TEL etc
5 USART5 PD2 PC12 PAD

I2C with GPS port together.Use for BARO or compass etc

Value Identifier function pin Notes
1 I2C1 SDA PB9 with GPS outlet
2 I2C1 SCL PB8 with GPS outlet

Buzzer/LED output

Value Identifier function pin Notes
1 LED0 LED PC14
2 BEEPER BEE PC13

VBAT input with 1/10 divider ratio,Current signal input,Analog/digit RSSI input

Value Identifier function pin Notes
1 ADC1 VBAT PC2 DMA2_Stream0
2 ADC1 CURR PC1 DMA2_Stream0
3 ADC1 RSSI PA0 DMA2_Stream0
4 ADC1 extend PC0 DMA2_Stream0 extend for other senser(PAD)

8 Outputs, 1 PPM input

Value Identifier function pin Notes
1 TIM12_CH2 PPM PB15 PPM
2 TIM3_CH3 OUPUT1 PB0 DMA1_Stream7
3 TIM8_CH1 OUPUT2 PC6 DMA2_Stream2
4 TIM1_CH3 OUPUT3 PA10 DMA2_Stream6
5 TIM1_CH1 OUPUT4 PA8 DMA2_Stream1
6 TIM8_CH3 OUPUT5 PC8 DMA2_Stream4
7 TIM3_CH4 OUPUT6 PB1 DMA1_Stream2
8 TIM3_CH2 OUPUT7 PC7 DMA1_Stream5
9 TIM8_CH4 OUPUT8 PC9 DMA2_Stream7
10 TIM4_CH1 PWM PB6 DMA1_Stream0 LED_STRIP
11 TIM2_CH1 PWM PA5 FPV Camera Control(FCAM)

Gyro & ACC ,suppose ICM20689/MPU6000

Value Identifier function pin Notes
1 SPI1 SCK PB3
2 SPI1 MISO PA6
3 SPI1 MOSI PA7
4 SPI1 CS PC4

OSD MAX7456

Value Identifier function pin Notes
1 SPI3 SCK PC10
2 SPI3 MISO PC11
3 SPI3 MOSI PB5
4 SPI3 CS PA15

16Mbyte flash

Value Identifier function pin Notes
1 SPI2 SCK PB13
2 SPI2 MISO PB14
3 SPI2 MOSI PC3
4 SPI2 CS PB12

SWD

Pin Function Notes
1 SWCLK PAD
2 Ground PAD
3 SWDIO PAD
4 3V3 PAD

Designers