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 board supports the hardware features listed below.
- on-chip / on-board
- Feature integrated in the SoC / present on the board.
- 2 / 2
-
Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files. -
vnd,foo -
Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.
ebyte_e73_tbb/nrf52832 target
Type |
Location |
Description |
Compatible |
|---|---|---|---|
CPU |
on-chip |
ARM Cortex-M4F CPU1 |
|
ADC |
on-chip |
Nordic Semiconductor nRF family SAADC node1 |
|
ARM architecture |
on-chip |
Nordic UICR (User Information Configuration Registers)1 |
|
on-chip |
Nordic nRF family BPROT (Block Protection)1 |
||
on-chip |
Nordic EGU (Event Generator Unit)6 |
||
on-chip |
Nordic nRF family MWU (Memory Watch Unit)1 |
||
Audio |
on-chip |
Nordic PDM (Pulse Density Modulation interface)1 |
|
Clock control |
on-chip |
Nordic nRF clock control node1 |
|
Comparator |
on-chip |
Nordic nRF COMP (analog COMParator)1 |
|
Counter |
on-chip |
Nordic nRF timer node5 |
|
Cryptographic accelerator |
on-chip |
Nordic ECB (AES electronic codebook mode encryption)1 |
|
on-chip |
Nordic nRF family CCM (AES CCM mode encryption)1 |
||
Debug |
on-chip |
ARMv7 instrumentation trace macrocell1 |
|
Flash controller |
on-chip |
Nordic NVMC (Non-Volatile Memory Controller)1 |
|
GPIO & Headers |
on-chip |
NRF5 GPIOTE1 |
|
on-chip |
NRF5 GPIO1 |
||
I2C |
on-chip |
Nordic nRF family TWIM (TWI master with EasyDMA)2 |
|
I2S |
on-chip |
Nordic I2S (Inter-IC sound interface)1 |
|
Input |
on-board |
Group of GPIO-bound input keys1 |
|
Interrupt controller |
on-chip |
ARMv7-M NVIC (Nested Vectored Interrupt Controller)1 |
|
LED |
on-board |
Group of GPIO-controlled LEDs1 |
|
on-board |
Group of PWM-controlled LEDs1 |
||
Miscellaneous |
on-chip |
Nordic FICR (Factory Information Configuration Registers)1 |
|
on-chip |
Nordic nRF family PPI (Programmable Peripheral Interconnect)1 |
||
MTD |
on-chip |
Flash node1 |
|
on-board |
Fixed partitions of a flash (or other non-volatile storage) memory1 |
||
Networking |
on-chip |
Nordic nRF family RADIO peripheral1 |
|
on-chip |
Nordic nRF family NFCT (Near Field Communication Tag)1 |
||
Pin control |
on-chip |
The nRF pin controller is a singleton node responsible for controlling pin function selection and pin properties1 |
|
Power management |
on-chip |
Nordic nRF power control node1 |
|
PWM |
on-chip |
||
on-chip |
nRFx S/W PWM1 |
||
Regulator |
on-chip |
Nordic nRF5X regulator (fixed stage of the core supply)1 |
|
Retained memory |
on-chip |
Nordic GPREGRET (General Purpose Register Retention) device2 |
|
RNG |
on-chip |
Nordic nRF family RNG (Random Number Generator)1 |
|
RTC |
on-chip |
Nordic nRF RTC (Real-Time Counter)3 |
|
Sensors |
on-chip |
Nordic nRF family TEMP node1 |
|
on-chip |
Nordic nRF quadrature decoder (QDEC) node1 |
||
Serial controller |
on-chip |
Nordic nRF family UARTE (UART with EasyDMA)1 |
|
SPI |
on-chip |
Nordic nRF family SPI (SPI master)3 |
|
SRAM |
on-chip |
Generic on-chip SRAM description1 |
|
Timer |
on-chip |
ARMv7-M System Tick1 |
|
Watchdog |
on-chip |
Nordic nRF family WDT (Watchdog Timer)1 |
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.