3: Hardware Setup and Features

This chapter describes:

How to install various components on the mangOH Red

Available connectors

How to configure and control features using connectors and switches

3.4 Insert / Remove Embedded Module

The mangOH Red has one CF3 module socket. (For a list of supported Sierra Wireless CF3 modules, see Table 1-2 on page 7.)

Note:   The mangOH Red comes with a CF3 module (WP76xx, WP77xx, WP8548, etc.) pre-installed.

To insert a CF3 module on the mangOH Red board:

1.Place the mangOH Red face-up.

2.Insert the CF3 module  Hold the module above the socket and line up the triangles on the module and socket, then place the module in the socket. The module should drop into place when you have it aligned properly. Do not insert at an angle as this may damage the socket pins.

mangOHred-straight-boardonly_module_2.png

 

Figure 3-1:   mangOH Red  Module Insertion

3.Hold the module cover over the module and line up the circle on the cover with the triangle on the label, then press down carefully on the cover (on the edges) until you hear the cover click into place. Make sure all sides of the cover have clicked into place.

41110400_Hardware00058.jpg

 

Figure 3-2:   mangOH Red  Module Cover Attachment

To remove a CF3 module from the mangOH Red:

1.Remove the module cover using the module cover removal tool  Starting at one corner, insert the tool in the pair of holes and carefully pry the cover away from the module.

2.Repeat at the other locations (pairs of pry holes are on each side).

mangOH_Red_CF3_cover_tool_positioned_2.png

 

Figure 3-3:   mangOH Red  Module Removal

3.Lift the cover off the module.

4.Carefully lift the module straight up out of the socket.

3.5 Power Supply Sources

The mangOH Red is powered via either of the board’s micro-USB connectors or an optional backup battery. The micro-USB connectors can connect to a computer’s USB port or, if greater power is required, to an AC adapter.

 

Table 3-1:   mangOH Red Power Supplies

Supply

Details

Primary

CN305  Console USB connector

Provides a serial connection to the mangOH Red.

CN801  CF3 USB connector

Provides access to CF3 interfaces (ECM port, AT port, etc.)

Backup

CN802  Battery

An optional Li-ion or Li-polymer (3.7 V nominal) rechargeable battery can be installed to power the board if the primary power supply fails.

3.5.1 Select USB Power Supply

Power is supplied to the mangOH red via USB connection (host computer or AC adapter) or an external battery backup.

The mangOH Red has two USB connectors:

CF3 USB  Used for SSH connections, AT commands, and firmware downloads.

CONSOLE_USB  Serial connection used to access the module’s console for diagnostic purposes.

Note:   If you want to power the mangOH Red with an AC adapter instead of a computer’s USB connector, choose the appro­priate micro-USB connector:
• Console  This leaves the CF3 USB connector available for SSH connections, AT commands, and firmware downloads.
• CF3 USB  This leaves the Console USB connector available for a serial connection to access the module’s console for diagnostic purposes.

To select the USB power supply:

1.Place the mangOH Red face-up and locate the power select (PWR SEL) jumper pins (CN804).

mangOHred-angled_cf3power_7.png

 

Figure 3-4:   Power Supply Connectors / Selector

2.Select the preferred power source:

·CF3 USB connector  Place a jumper across the two pins closest to USB connector CN801.

·Console USB connector  Place a jumper across the two pins closest to USB connector CN305.

mangOHred-angled_cf3power_8.png

 

Figure 3-5:   USB Power Supply Selection

3.5.2 Connect Battery Backup

Optionally, you can connect a rechargeable Li-Ion / Li-Polymer battery to the mangOH Red to provide uninterrupted power in the event that the primary power supply fails.

If SW401 pin 5 is ON, the mangOH Red recharges the battery and then provides a trickle charge to maintain the battery’s full charge.

To connect a rechargeable Li-Ion / Li-Polymer battery to the mangOH Red:

1.Connect the battery to CN802.

battery_connector_2.png

 

Figure 3-6:   Battery Backup Connector

2.If you want the battery to recharge while connected to the board, set switch SW401 pin 5 to ON.

battery_connected_2.png

 

Figure 3-7:   mangOH Red With Rechargeable Battery Connected

Caution:   If a rechargeable battery is not connected to the board, make sure to set switch SW401 pin 5 to OFF.

Caution:   The board is designed to use a rechargeable Li-Ion or Li-polymer battery. Regular (non-rechargeable) batteries are NOT recommended. However, if a regular battery is used, switch SW401 pin 5 MUST be set to OFF, otherwise the battery and possibly the board will be damaged.

3.6 Connect Antenna(s)

The mangOH Red includes three antenna connectors for the CF3 module.

 

Table 3-2:   Antenna Connectors

Type

Connectora

Details

Main

CN301

Required to establish a mobile network data connection

Diversity

CN302

Used only if CF3 module supports diversity.

GNSS

CN303

Required to enable access to GNSS functionality

Active

3.3 V bias voltage

aU.FL connectors

Note:   The mangOH Red includes an integrated antenna for the Wi-Fi / BT chipset.

To connect an antenna to the Main, Diversity or GNSS antenna connector:

1.Place the mangOH Red face-up.

2.Attach the main antenna, the GNSS antenna, and (for WP76xx modules) the diversity antenna.

Note:   Press the antenna connector firmly to get a secure connection. Also, the female connectors (on the antenna) are rated for a limited number of reconnects before the connector wears out, so should be left connected if possible. Use a U.FL extraction tool to put less strain on the connector during removal.)

three_antenna_board_2.jpg

 

Figure 3-8:   Antenna Connector Locations

Tip:   If you have trouble connecting an antenna, make sure it is positioned directly on the connector and push straight down. The antenna will not connect at an angle.

3.7 SIM, SD, and IoT Expansion Cards

3.7.1 Inserting a micro-SIM Card

To establish a mobile network connection with a CF3 module, you must install a micro-SIM in the connector on the bottom side of the mangOH Red. Use either of the following:

SIM card with activated account (e.g. the Sierra Wireless or AT&T SIM provided with the kit, or another carrier’s activated card), or

Test SIM card for use with a call box (for example, an Agilent 8960 or Rohde & Schwarz CMU200)

To install a SIM card:

1.Place the Dev Kit face-down (as shown).

sim_inserting_4.jpg

 

Figure 3-9:   SIM Connector and micro-SD Locations

2.Insert the SIM card with contacts face-down into the desired slot  note the location of the notched corner of the card in Figure 3-10.

Important:   CN600 is a dual-connector  the lower slot is for the micro-SIM, and the upper slot is for a microSD card.

sim_insertion_2.jpg

 

Figure 3-10:   SIM Insertion

3.8 Inserting a microSD Card

To install a microSD card:

1.Place the Dev Kit face-down (as shown).

sim_inserting_5.jpg

 

Figure 3-11:   SIM Connector and micro-SD Locations

2.Insert the microSD card with contacts face-down into the top slot of CN600.

Important:   CN600 is a dual-connector  the upper slot is for the microSD card, and the lower slot is for a micro-SIM.

sd_inserting_2.png

 

Figure 3-12:   microSD  Inserting

sd_inserted_2.jpg

 

Figure 3-13:   microSD  Inserted

3.8.1 Inserting / Removing an IoT Expansion Card

The mangOH Red includes one IoT Expansion Card slot.

Caution:   Handle IoT Expansion Cards carefully to make sure components are not accidentally damaged. Hold them by their edges to avoid possible ESD damage.

To install an IoT Expansion Card:

1.Remove power from the mangOH Red (disconnect the micro-USB cable from the computer or AC adapter).

Note:   You must remove the power because IoT Expansion Cards are not hot-swappable  the card will be recognized when power is reapplied.

2.Check the expansion card to make sure you know which side is the top. (Expansion cards must not be inserted upside-down.)

3.Slide the expansion card straight into the IoT Connector (CN306).

4.Use two M2 screws (included) to secure the expansion card to the standoffs.

iot_inserting_2.png

 

Figure 3-14:   IoT Expansion Card Insertion

iot_inserted_2.png

 

Figure 3-15:   IoT Expansion Card Inserted

To remove an IoT Expansion Card:

1.Remove the two screws.

2.Pull the expansion card straight out, using safe ESD-handling practices (such as wearing proper ESD straps).

For detailed IoT Expansion Card slot interface information, refer to the mangOH Red Developer’s Guide. For detailed information about expansion cards, refer to the IoT Expansion Card Specification.

3.9 Peripheral Connectors

3.9.1 Raspberry Pi Connector

CN307 is a 26-pin connector that provides access to primary Raspberry Pi Rev B pin functions.

side_view_audio_8.png

 

Figure 3-16:   Raspberry Pi Connector

41110400_Hardware00093.jpg

 

Figure 3-17:   Raspberry Pi Connector Signal Groups

3.9.2 Audio Connection

The mangOH Red includes a 3.5 mm audio jack (CN500) for use with audio-enabled CF3 modules. If supported by the CF3 module, the jack can be used to make a voice call.

By default, the audio jack is connected to the onboard mangOH codec, and is configured for use with a CTIA / AHJ-compatible headset. For details, see Table 3-4.

side_view_audio_9.png

 

Figure 3-18:   Audio Output Jack

3.9.3 USB Host Connection

The mangOH Red includes a USB 2.0 Host port (CN304) for attaching a peripheral device, memory stick, etc.

side_view_audio_10.png

 

Figure 3-19:   USB Host Port

3.10 Control Connections

3.10.1 Console USB Connector

The mangOH Red includes a micro-USB 2.0 connector (CN305) for console access.

By default, this port is enabled and configured to connect to the CF3 module’s two-wire UART interface (UART2).

The connection can be used to access the CF3 module’s Linux console (on Smart CF3 modules), the Wi-Fi / BT chipset’s console, and to install firmware downloads on the CF3 module or Wi-Fi / BT chipset.

side_view_battery_2.png

 

Figure 3-20:   Console USB Output Connection

3.10.2 CF3 USB Connection

The mangOH Red includes a micro-USB 2.0 connector (CN801) for access to the CF3 module’s interfaces (ECM, AT, etc.), and to install firmware downloads on the Wi-Fi / BT chipset.

By default, this port is enabled and configured to connect to the CF3 module’s USB interface.

side_view_audio_11.png

 

Figure 3-21:   CF3 USB Connector

3.11 LED Indicators

The mangOH Red includes several LED indicators.

 

Table 3-3:   mangOH Red LEDs

LED

Description

1  Power (VCC_3V3)

D803 - On when power is supplied by any power source (USB, battery)

2  IoT Expansion Card 0

D401 - On when an IoT Expansion Card is installed in slot IOT0.

3  CF3 RF Rx / Tx

D402 - On when the CF3 module is sending (Tx) or receiving (Rx) data

4  WLAN connected

D200 - On when the device is connected to a WLAN

Note:   Off when low power is enabled.

5  Generic

D410 - Connected to CF3 GPIO34 (via expander WP_GPIO_7_lvl), available for user-defined purposes

 

41110400_Hardware00104.jpg

 

Figure 3-22:   LED Indicators

3.12 Physical Switches

3.12.1 Reset Switches

The mangOH Red includes two reset switches:

Board reset (SW400)  Press and hold for 5 seconds to reset the board.

Note:   When the board is resetting, the reset signal is held LOW until the CF3 module is fully booted.

ULPM / PWR_ON (SW402)  If SW401 pin 1 (PWR_ON) is:

·Off  When power is connected to the board, press and release SW402 to power on the module. After the module powers on, SW402 has no effect.

·On  When power is connected to the board, power is supplied automatically to the module. SW402 has no effect.

For details on resetting the mangOH Red or specific application blocks, see the mangOH Red Developer’s Guide.

dips_nofilm_cf3_covered_4.png

 

Figure 3-23:   Reset Switches

3.12.2 Buttons

The mangOH Red includes one generic button (SW200) for user-defined purposes.

dips_nofilm_cf3_covered_5.png

 

Figure 3-24:   Buttons

3.13 mangOH Red Configuration

3.13.1 Default Configuration

The mangOH Red‘s default configuration is described in Table 3-4.

 

Table 3-4:   mangOH Red Default Configuration

Component / Switch

Default Configuration / Behavior

Notes

Antenna connectors (CN301, CN302, CN303)

U.FL connectors

3.3 V bias voltage for active antennas

 

Audio connector (CN500)

Connected to onboard mangOH codec

CTIA / AHJ-compatible headset

 

Console USB connector (CN305)

Enabled

Connected to CF3 module’s UART2

 

CF3 USB connector (CN801)

Enabled

Connected to CF3 module’s USB interface

 

LEDs

All LEDs are enabled and will exhibit their default behaviors

 

System reset signal (RESET_IN_N)

Held LOW until CF3 module is fully booted

Peripherals on the mangOH Red are not activated until the module is fully booted.

SD connector (CN600)

Connected to CF3 module

Board can be configured using a software command to connect the module’s SDIO signals to IOT1 instead of the SD connector.

Peripheral interfaces (UART, SPI, I2C, etc.)

See the mangOH Red Developer‘s Guide for details.

Module Signals Control (SW401)

PWR_ON (Dip 1) = ON

WIFI_UART1_TX (Dip 2) = OFF

VCC_3V7_ULPM (Dip 3) = OFF

HL_MODE (Dip 4) = OFF

BATT_TS+ (Dip 5) =OFF

CONS_DIR (Dip 6) = OFF

TP1_BOOT (Dip 7) = OFF

LowPower_RESET (Dip 8) = ON

Board is shipped with pins 1 and 8 ON. Pins 3 and 5 must also be switched to ON, as noted in Initial Setup

3.13.2 Switch and Jumper Configuration Options

The mangOH Red uses several switches and jumpers to configure the board and CF3 module‘s operation, as detailed below in Table 3-5 through Table 3-8.

To locate these switches and jumpers, see Figure 3-25 and Figure 3-26.

 

Table 3-5:   CN804—Board Power Selecta

Power supply selection

Jump 1–2

Jump 2–3

Console micro-USB connector (CN305)

Yes

 

CF3 USB micro-USB connector (CN801)

 

Yes

aRequired: Select one option only (Jump 1–2 or Jump 2–3). For details, see Select USB Power Supply.

3.14 Real-time I/O

The mangOH Red includes a connector (CN310) that provides access to the board’s Wi-Fi/BT chipset for real-time input/output with sensors and other devices.

 

Table 3-6:   CN310—Real Time I/O

Pin

Signal

Purpose

1

WIFI_I2C0_DATA

I2C bus for sensors and other devices

2

GPIO_1_EXP

User-defined GPIO

3

WIFI_I2C0_CLK

I2C bus for sensors and other devices

4

ADC1_WIFI

Analog input

5

GPIO_0_EXP

User-defined GPIO

6

ADC2_WIFI

Analog input

3.15 Low-power I/O

The mangOH Red includes a connector that provides GPIOs and ADCs that can continue to be accessed when the CF3 module is in low power mode, and can provide low voltage power to the external sensors / devices connected to those pins.

 

Table 3-7:   CN312—Low Power I/O

Pin

Signal

Purpose

1

WP_GPIO_4_wakeable

May be used to wake CF3 module from sleep mode (if supported by module)

2

VCC_1V8_ULPM

Low power voltage available for external sensors / devices (since main power is not available during low power mode)

3

WP_GPIO_5_wakeable

May be used to wake CF3 module from sleep mode (if supported by module)

4

ADC1

5

ADC2

6

CARD2_DETECT

Wakeup pin for HL77XX modules

3.16 Module Signals Control

The mangOH Red uses a multi-function switch (SW401) to control specific signals.

 

Table 3-8:   SW401—Module Signals Control

Signal

Dip

On / Off

State

PWR_ON

1

On (Default)

Enable CF3 module’s POWER_ON signal

Off

Disable POWER_ON signal

WIFI_UART1_TX

2

On

Enable CF3 module’s firmware download (recovery) mode.

Note:   Similar functionality to TP1_BOOT

Off (Default)

Normal operation

VCC_3V7_ULPM

3

On (Default)

While in ULPM, CF3 module and accessories receive power.

Off

While in ULPM, only the CF3 module and accessories receive power.

HL_MODE

4

On

When combined with LowPower_RESET, indicates that board is in HL mode.

Off (Default)

When combined with LowPower_RESET, indicates that board is in WP mode.

BATT_TS+

5

On

Enable backup battery charging.

Off (Default)

Disable backup battery charging.

CONS_DIR

6

On

Console USB connector accesses the Wi-Fi / Bluetooth module’s console.

Note:   To download firmware to the Wi-Fi module, set CONS_DIR OFF and WIFI_UART1_TX ON.

Off (Default)

Console USB connector access the CF3 module’s console.

TP1_BOOT

7

On

Enable CF3 module’s TP1 (boot) signal functionality. Pull the signal low to enter download mode for firmware updates.

Off (Default)

CF3 module functions normally.

LowPower_RESET

8

On

When combined with HL_MODE, indicates that board is in WP mode.

Off (Default)

When combined with HL_MODE, indicates that board is in HL mode.

mangoh_assembly_1600674_dv6_top_2.jpg

 

Figure 3-25:   mangOH Red Assembly  Top Side Switches / Connectors

Note:   For reference only. For latest schematic, visit mangoh.io/mangoh-red-resources-hardware.

mangoh_assembly_1600674_dv6_bottom_2.jpg

 

Figure 3-26:   mangOH Red Assembly - Bottom Side Connectors

Note:   For reference only. For latest schematic, visit mangoh.io/mangoh-red-resources-hardware.