~~TOC:3-4~~
===== WFLY ET07 Hardware Connections =====
The following documents the hardware inside the Radiolink AT9 transmitter

  * MCU: [[https://www.st.com/resource/en/datasheet/stm32f407ve.pdf|STM32F407VET6]] 512kB Flash, 64kB RAM 100pin package
  * EEPROM: [[http://html.alldatasheet.com/html-pdf/99362/ATMEL/AT25128A/127/1/AT25128A.html|ATMLH712]] 128K-bit SPI SERIAL EEPROM
  * LCD Display: ??
  * LCD Driver: ??
  * Radio: A7105
  * Touch: [[http://www.ti.com/cn/lit/gpn/tsc2046|TSC2046]]4-Wire Touch Screen Controller with low voltage digital I/O 
  * DC/DC converter: ??

==== STM32 Connections ====
^Pin     ^Connection  ^Description           ^Additional Info^
|BOOT0   |BOOT0       |                      |               |

=== GPIOA ===
^Pin     ^Connection  ^Description           ^Additional Info^
|PA00    | CH1        | SRH RIght Hor Stick  | |


=== GPIOB ===
^Pin     ^Connection  ^Description           ^Additional Info^
|PB00    | POT        | Left Shoulder        | |

=== GPIOC ===
^Pin     ^Connection  ^Description           ^Additional Info^
|PC00    | K1A        | 2-pos switch         |  |

=== GPIOD ===
^Pin     ^Connection  ^Description           ^Additional Info^
|PD00    | DISP5      | Data                 |  |    

=== GPIOE ===
^Pin     ^Connection  ^Description           ^Additional Info^
|PE00    | DISP19     | RESx ILI9341 Pin     | Reset is Active low  |

=== Battery Voltage Measurement ===
The battery voltage (ADC1_9) was measured as:
^ Voltage ^ ADC Value ^
| 15.05V  | 0x0FFB    |
| 10.02V  | 0x0A9D    |
|  4.31V  | 0x048E    |

is calculated by the formula: 
V = 0.003672 * value + 0.0287

=== FCC Report ===
FCCID: [[https://www.fcc.gov/general/fcc-id-search-page| U2B RL039AT9]]