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hardware:universaltx
UniversalTx Hardware Connections
The following documents the hardware inside the UniversalTx transceiver board
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Radio:
CYRF6936 2.4GHz
CC2500 2.4GHz
A7105 2.4GHz
NRF24L01 2.4GHz
STM32 Connections
Pin | Description |
BOOT0 | CON2 |
NRST | Debugger (NRESET) |
GPIOA
Pin | Description |
0 | PPMin/USART4 (can be used as single-wire bi-di) |
1 | PA Enable input from NRF24L01 |
2 | Bluetooth UART Tx |
3 | Bluetooth UART Rx |
4 | Bluetooth STATE input (connection detect) |
7 | Bluetooth Key output |
8 | UniversalTx CSN |
9 | CYRF6936 CSN |
10 | USB D- |
11 | USB D+ |
12 | SWDIO |
13 | SWCLK |
14 (SWCLK) | Debugger SWCLK (TCK) |
15 | Mux Select 1 |
GPIOB
Pin | Description |
2 | BOOT1 |
3 | Mux Select 2 |
6 | NRF24L01 CSN |
7 | VBUS (USB Power Detect) |
8 | NRF24L01 ChipEnable |
9 | A7105 CSN |
10 | PA Tx Enable |
11 | PA Rx Enable |
12 | Pasthrough CSN input |
13 | SCK |
14 | MISO |
15 | MOSI |
Interrupt usage
SYSTICK | Priority 0 |
EXTI0 | Pritority128 - PPM In edge detect |
EXTI2 | Priority 0 - Watchdog (currently not enabled) |
TIM14 | Priority 64 - Transmit timer |
EXTI8 | Priority 0 - UniversalTx CSN |
EXTI12 | Priority 0 - Passthrough CSN |
ADC | Priority 0 - ADC compare complete (set PA Tx/Rx based on NRF24L01 PA_EN) |
Timers
TIM1 | PPM In pulse counter |
TIM14 | Transmit timer |
hardware/universaltx.txt (132482 views) · Last modified: 2016/04/16 05:27 by FDR