TXW826DK
Overview
The TXW826DK Development Kit (826DK) hardware provides support for the TXW826 SOC and the following devices:
- ADC
- CLOCK
- FLASH
- GPIO
- I2C
- SPI
- UART
- USB
- RADIO (Wi-Fi)
- RADIO (Bluetooth Low Energy)
- RTC
- WDT
More information about the board can be found at the 826DK website. The 826DK Development Kit User Guide contains the SOC's information and the datasheet.
Hardware
826DK has the following features:
- Two LEDs
- One Button
- USB 2.0
- Wi-Fi/BLE
Supported Features
The 826dk board supports the hardware features listed below.
| on-chip/on-board | Feature integrated in the SoC / present on the board. |
|---|---|
| x2/x2 | Number of CPU cores that are enabled / disabled. |
826dk/txw826
| TYPE | LOCATION | DESCRIPTION | COMPATIBLE |
|---|---|---|---|
| CPU | on-chip | CK804-D CPU x2 | |
| SRAM | on-chip | Generic on-chip SRAM x1 | sram |
| LED | on-board | Group of GPIO-controlled LEDs x2 | gpio-leds |
Connections and IOs
LED
- LED1 (green) = PA.17
- LED2 (red) = PA.17
Push Button
826DK has a pushbutton, connected to the PA_20 SOC GPIO pin.
BUTTON1 = SW1 = PA.20
Serial
By default the system UART has the following pin configuration:
| SOC Pin | Signal |
|---|---|
| PA_21 | TX |
| PA_22 | RX |
Debug Connector
| PIN # | Signal |
|---|---|
| 1 | VCC |
| 2 | GND |
| 4 | GND |
| 5 | GND |
| 6 | GND |
| 7 | UART_TX |
| 8 | UART_RX |
| 9 | GND |
| 10 | GND |
Programming and Debugging
Flashing
Here is an example for the Hello World application.
First, run your favorite terminal program to listen for output.
minicom -D <tty_device> -b 115200
Then build and flash the application
txw build
txw flash