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hardware:devof12e

Devo F12E Hardware Connections

The following documents the hardware inside the Devo-F12E transmitter

Note: This is still in development. Anything with strike-through is incorrect/not verified

  • MCU: STM32F103VCT6 256kB Flash, 48kB RAM 100pin package
  • SPI Flash: UPCT25VF512A 64kB SPI NOR Flash
  • LCD Driver: Techwell TW8816 Driver (800×480 panel). 12×18 characters, programmable font
  • LCD Display: KSD050C4005A (800×480 24bit) (120.9(W)×75.95(H)×2.9(D))
  • Radio: CYRF6936 2.4GHz
  • Voltage Regulator: MP1584EN Switching regulator

STM32 Connections

Pin Description
BOOT0 CON2
NRST Debugger (NRESET)

GPIOA

Pin Description
0 (ADC123_0) AUX 7
1 Buzzer
2 output to 0 to shut off Tx
3 power-switch in 'off' position (goes high on 'off')
4 (ADC12_4) AUX 6
5 (SPI1_SCK) SPI Flash
6 (SPI1_MISO) SPI Flash
7 (SPI1_MOSI) SPI Flash
9 (USART1_TX) Trainer Rx
10 (USART1_RX) Trainer Tx
11 (USBDM) USB+
12 (USBDP) USB-
13 (SWDIO) Debugger SWDIO (TMS)
14 (SWCLK) Debugger SWCLK (TCK)

GPIOB

Pin Description
0 (ADC12_8) AUX 5
1 Backlight PWM control
2 (BOOT1) SPI Flash Chip-Select
4 Button Matrix Col 1
5 Button Matrix Col 2
6 I2C1_SCL (LCD)
7 I2C1 SDA (LCD)
8 Button Matrix Col 3
9 Button Matrix Col 4
10 USB Enable (enable Low)
11 TxModule pin 10 - CYRF6936 Reset
12 (SPI2_NSS) TxModule pin 1
13 (SPI2_SCK) TxModule pin 3
14 (SPI2_MISO) TxModule pin 9
15 (SPI2_MOSI) TxModule pin 7

GPIOC

Pin Description
0 (ADC123_IN_10) AUX 4
1 (ADC123_IN_11) Left Horizontal Stick
2 (ADC123_IN_12) Right Vertical Stick
3 (ADC123_IN_13) Right Horizontal Stick
4 (ADC12_IN_14) Battery Voltage
5 (ADC12_IN_15) Left Vertical Stick
6 Gear Switch
7 Elevator D/R Switch
8 Rudder D/R Switch
9 FMode 0 Switch
10 FMode 2 Switch
11 Aileron D/R Switch
12 Mix 0 Switch
13 Mix 2 Switch

GPIOD

Pin Description
2 Vibrator
8 Video Channel 4
10 Video Channel 5

GPIOE

Pin Description
2 Button Matrix Row 1
3 Button Matrix Row 2
4 Button Matrix Row 3
5 Button Matrix Row 4
6 Button Matrix Row 5
7 LCD Reset
8 Video Channel 1
9 Video Channel 2
10 Video Channel 3
11 Video AV On/Off
12 ??? E12,E13,E14 are related
13 ??? E12,E13,E14 are related
14 ??? E12,E13,E14 are related

Battery Voltage

The battery voltage (ADC1_14) is calculated by the formula:

V = 0.0021x + 0.3026

Button Matrix

B.6 B.7 B.8 B.9
E.2 L- Rudder Trim Left Top Left Trim Down NC
E.3 Aileron Trim Right Rudder Trim Right Top Left Trim Up Elevator Trim Up
E.4 Aileron Trim Left Ext Top Right Trim Up Throttle Trim Up
E.5 Ent UP+ Top Right Trim Down Elevator Trim Down
E.6 R+ DN- NC Throttle Trim Down

FCC Report

FCCID: S29 DEVO-F12E

hardware/devof12e.txt (3968 views) · Last modified: 2017/03/10 07:10 by vlad_vy