E73-TBB
Overview
The EBYTE E73-TBB hardware provides support for the Nordic Semiconductor nRF52832 ARM Cortex-M4F CPU and the following devices:
ADC
CLOCK
FLASH
GPIO
I2C
MPU
NVIC
PWM
RADIO (Bluetooth Low Energy)
RTC
Segger RTT (RTT Console)
SPI
UART
WDT
More information about the board can be found at the E73-TBB website [1]. The Nordic Semiconductor Infocenter [2] contains the processor’s information and the datasheet.
Hardware
E73-TBB has two external oscillators. The frequency of the slow clock is 32.768 kHz. The frequency of the main clock is 32 MHz. Additionally the board features CH340 USB-UART converter. It is possible to connect external BT antenna using U.FL socket and solder NFC antenna using NFC_ANT connector.
Supported Features
The ebyte_e73_tbb/nrf52832 board configuration supports the following hardware features:
Interface |
Controller |
Driver/Component |
|---|---|---|
ADC |
on-chip |
adc |
CLOCK |
on-chip |
clock_control |
FLASH |
on-chip |
flash |
GPIO |
on-chip |
gpio |
I2C(M) |
on-chip |
i2c |
MPU |
on-chip |
arch/arm |
NVIC |
on-chip |
arch/arm |
PWM |
on-chip |
pwm |
RADIO |
on-chip |
Bluetooth |
RTC |
on-chip |
system clock |
RTT |
Segger |
console |
SPI(M/S) |
on-chip |
spi |
UART |
on-chip |
serial |
WDT |
on-chip |
watchdog |
Other hardware features are not supported by the Zephyr kernel. See E73-TBB website [1] and Nordic Semiconductor Infocenter [2] for a complete list of nRF52832 hardware features.
Connections and IOs
LED
LED0 (red) = P0.17
LED1 (red) = P0.18
External Connectors
P1 Header
PIN # |
Signal Name |
|---|---|
1 |
GND |
2 |
3.3V |
3 |
P0.04 |
4 |
P0.03 |
5 |
P0.02 |
6 |
P0.31 |
7 |
P0.30 |
8 |
P0.29 |
9 |
P0.28 |
10 |
P0.27 |
11 |
P0.26 |
12 |
P0.25 |
P2 Header
PIN # |
Signal Name |
|---|---|
1 |
P0.24 |
2 |
P0.23 |
3 |
P0.22 |
4 |
SWDIO |
5 |
SWDCLK |
6 |
P0.21/RST |
7 |
P0.20 |
8 |
P0.19 |
9 |
P0.16 |
10 |
P0.15 |
11 |
P0.12 |
12 |
P0.11 |
NFC_ANT
PIN # |
Signal Name |
|---|---|
1 |
P0.10 |
2 |
P0.09 |
Programming and Debugging
Flashing
Follow the instructions in the Nordic nRF5x Segger J-Link page to install and configure all the necessary software. To flash the board connect pins: SWDIO, SWDCLK, RST, GND from E73-TBB to corresponding pins on your J-Link device, then build and flash the application in the usual way.
# From the root of the zephyr repository
west build -b ebyte_e73_tbb/nrf52832 samples/basic/blinky
west flash
Debugging
Refer to the Nordic nRF5x Segger J-Link page to learn about debugging Nordic chips with a Segger IC.