Support for the SeeedStudio SenseCAP T1000-E. More...

Detailed Description

Support for the SeeedStudio SenseCAP T1000-E.

Author: Baptiste Le Duc bapti.nosp@m.ste..nosp@m.leduc.nosp@m.@eti.nosp@m.k.com

Pin configuration is based on the Meshtastic firmware variant for this board.

Overview

The SenseCAP T1000-E is a compact LoRaWAN tracker based on the nRF52840 MCU with the following on-board components:

Nordic nRF52840 SoC @64MHz, 1MB Flash, 256KB RAM
Semtech LR1110 LoRa transceiver
Mediatek AG3335 GNSS module
QMA6100P 3-axis accelerometer
NTC temperature sensor
Light sensor
Buzzer
1 user button
1 LED
LiPo battery support with charging detection

Hardware

MCU	nRF52840	Supported
Family	ARM Cortex-M4 with FPU
Vendor	Nordic Semiconductor
RAM	256 KByte
Flash	1 MByte
Frequency	64 MHz
FPU	yes	yes
Timers	5 (32-bit)	yes
RTC	3	yes
ADC	12-bit SAADC, 8 channels	yes
UART	2 x UARTE	yes
SPI	3 x SPIM	yes
I2C	2 x TWIM	yes
PWM	4 x PWM (4 ch each)	yes
USB	1 x Full Speed	yes
BLE	Bluetooth 5.0	yes
IEEE 802.15.4	yes	yes
Vcc	1.7V - 3.6V
Datasheet	nRF52840 Product Specification
Board Manual	SenseCAP T1000-E Wiki

Pin Layout / Configuration

RIOT Peripheral	MCU Pin	Board Function	Remark
BTN0	P0.06	User button	pull-down, active high
LED0	P0.24	LED
UART_DEV(0) RX	P0.14	GNSS (AG3335) RX
UART_DEV(0) TX	P0.13	GNSS (AG3335) TX
UART_DEV(1) RX	P0.17	spare / debug RX
UART_DEV(1) TX	P0.16	spare / debug TX
SPI_DEV(0) SCLK	P0.11	LR1110 SCLK
SPI_DEV(0) MOSI	P1.09	LR1110 MOSI
SPI_DEV(0) MISO	P1.08	LR1110 MISO
I2C_DEV(0) SCL	P0.27	QMA6100P SCL
I2C_DEV(0) SDA	P0.26	QMA6100P SDA
PWM_DEV(0) CH0	P0.25	Buzzer
NRF52_AIN0	P0.02	Battery voltage ADC
NRF52_AIN5	P0.29	Light sensor ADC
NRF52_AIN7	P0.31	NTC temperature ADC
T1000E_LORA_NSS_PIN	P0.12	LR1110 chip select
T1000E_LORA_RESET_PIN	P1.10	LR1110 reset
T1000E_LORA_IRQ_PIN	P1.01	LR1110 IRQ (DIO1)
T1000E_LORA_BUSY_PIN	P0.07	LR1110 busy (DIO2)
T1000E_GPS_EN_PIN	P1.11	GNSS power enable
T1000E_GPS_RESET_PIN	P1.15	GNSS reset
T1000E_3V3_EN_PIN	P1.06	Sensor 3V3 power enable
T1000E_3V3_ACC_EN_PIN	P1.07	Accelerometer power enable
T1000E_ACC_INT_PIN	P1.02	QMA6100P interrupt
T1000E_CHRG_DETECT_PIN	P1.03	Charging status
T1000E_EXT_PWR_DETECT_PIN	P0.05	External power detect

Flashing the Device

The T1000-E ships with the Adafruit nRF52 Bootloader, you can find flashing instructions Adafruit nRF52 Bootloader section.

DFU mode must be entered manually before flashing. Follow the SeeedStudio instructions to put the device in DFU mode, then run:

BOARD=seeedstudio-sensecap-t1000e make -C examples/basic/hello-world flash

Note: Accessing the SWD pads requires opening the device enclosure. Overwriting the bootloader via SWD would make UF2 flashing unavailable and is not recommended for normal use.

Accessing STDIO

By default, stdio uses UART_DEV(1) (P0.16/P0.17). UART_DEV(0) is reserved for the GNSS module. Connect a USB-to-UART adapter to P0.16 (TX) and P0.17 (RX) to access the terminal.

To use USB CDC ACM (virtual serial port over the existing USB cable) instead, you can add USEMODULE+=stdio_cdc_acm to your application's Makefile or to the compiler call:

USEMODULE=stdio_cdc_acm BOARD=seeedstudio-sensecap-t1000e make -C examples/basic/hello-world flash term