Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for Multitech MultiConnect MTPCIE-H5
Summary of Contents for Multitech MultiConnect MTPCIE-H5
- Page 1 MultiConnect PCIe MTPCIE-H5/MTPCIE-BW Developer Guide...
- Page 2 Contacting Multi-Tech Knowledge Base The Knowledge Base provides immediate access to support information and resolutions for all Multi-Tech products. Visit http://www.multitech.com/kb.go. Support Portal To create an account and submit a support case directly to our technical support team, visit: https://support.multitech.com.
-
Page 3: Table Of Contents
CONTENTS Contents Product Overview ..............................6 About MultiConnect PCIe.............................. 6 Documentation ................................6 Developer Kit Contents ..............................6 Attaching Power Supply Blades ............................ 6 Power Supply and Blades............................6 Attaching the Blades ..............................7 Pinout..................................8 Multi-Tech Mini PCIe Pinout ............................8 Standard Mini-PCI Express Pinout .......................... - Page 4 CONTENTS Example HSPA+ H5 Labels............................34 Host Labeling................................35 Regulatory Statements ............................36 R&TTE Directive Compliance ............................36 Restriction of the Use of Hazardous Substances (RoHS) .................... 37 International Modem Restrictions ..........................37 Industry Canada and FCC ............................37 Requirements for Cellular Antennas with regard to FCC/IC Compliance ..............38 Industry Canada and FCC Identification Numbers ....................
- Page 5 CONTENTS MTPCIE-H5-V-BW ..............................60 MTPCIE-BW ................................60 Application Notes ..............................61 RF Performances ................................. 61 Receiver Features for Cellular Devices ........................61 Frequency Bands................................. 62 Installing Drivers for Non-UIP HSPA+ Devices......................63 HSPA+ Device Driver Installation ..........................63 Installing on Linux ..............................63 Windows Release Notes ............................
-
Page 6: Product Overview
The MultiConnect PCIe embedded cellular modem is based on industry-standard open interfaces and utilizes a PCI Express Mini Card form factor. Documentation The following documentation is available by email to oemsales@multitech.com or by using the Developer Guide Request Form at www.multitech.com. ■... -
Page 7: Attaching The Blades
PRODUCT OVERVIEW Power Supply No Power Supply with Power Supply with Power Supply with Blades EU blad NAM blade UK blade Attaching the Blades To attach a power supply blade: Remove the power supply cover (not shown). To do this, slide the lock down and hold it while you lift off the cover. -
Page 8: Pinout
PINOUT Pinout Multi-Tech Mini PCIe Pinout Note: Some modems do not include all the pins shown above. Refer to your model’s Device Guide for model specific pinout information. SDIO can operate up to 25Mhz. Treat the SDIO traces to Host like a bus and keep the bus length as short as possible. - Page 9 PINOUT Pin # Name Function MTPCIE-H5 MTPCIE-H5-V-BW MTPCIE- Ground 3G_RST 3G Cellular Reset line (low active) 1.8V 1.8V output 3.3Vaux 3.3Vaux GPIO_1 Bluetooth General purpose I/O Ground Ground 3G_DVI_WA0 I/O 3G Cellular digital voice control line Ground 3G_DVI_CLK 3G Cellular digital voice clock 3G_DVI_RX 3G Cellular digital voice...
- Page 10 PINOUT Pin # Name Function MTPCIE-H5 MTPCIE-H5-V-BW MTPCIE- 3G Cellular UART DTR 3G Cellular UART Receive data Ground 3G Cellular UART transmit data 3.3Vaux 3.3Vaux MultiConnect PCIe MTPCIE-H5/MTPCIE-BW Developer Guide...
-
Page 11: Standard Mini-Pci Express Pinout
PINOUT Standard Mini-PCI Express Pinout Pin # Function Description WAKE# WAKE 3.3Vaux 3.3Vaux COEX1 Co-existence pin, not defined COEX2 Co-existence pin, not defined 1.5V 1.5V CLKREQ# CLKREQ# UIM_PWR UIM_PWR UIM_DATA UIM_DATA REFCLK+ PCI Express reference clock UIM_CLK UIM_CLK REFCLK- PCI Express reference clock UIM_RESET UIM_RESET UIM_VPP... - Page 12 PINOUT Pin # Function Description PETp0 PCI Express transmitter differential pair signal USB_D- USB Negative Data USB_D+ USB Positive Data 3.3Vaux 3.3Vaux 3.3Vaux 3.3Vaux LED_WWAN# LED Output LED_WLAN# LED Output Reserved Reserved LED_WPAN# LED Output Reserved Reserved 1.5V 1.5V Reserved Reserved Reserved Reserved...
-
Page 13: Pinout For Cellular Usb Only
PINOUT Pinout for Cellular USB Only Pin # Name Description 3.3 Vaux 3.3 Vaux Ground Ground Ground Ground 3G_ONOFF 3G cellular on/off Ground 3G_RST 3G cellular reset line 3.3 Vaux 3.3 Vaux Ground Ground Ground Ground USB_D- 3G USB Negative Data Ground USB_D+ 3G USB Positive Data... -
Page 14: Design Considerations
DESIGN CONSIDERATIONS Design Considerations Design Consideration When using the Multi-Tech MiniPCIe form factor: ■ Consult your modem’s device guide for device dimensions. With the modem, the Multi-Tech Mini PCIe form factor exceeds the standard Mini PCIe maximum component height for top and bottom. ■... -
Page 15: Electrostatic Discharge Control
DESIGN CONSIDERATIONS ■ Eliminate ground loops, which are unexpected current return paths to the power source and ground. ■ Decouple the power cord at the power cord interface with decoupling capacitors. Methods to decouple power lines are similar to decoupling telephone lines. ■... -
Page 16: Developer Board And Schematics
DEVELOPER BOARD AND SCHEMATICS Developer Board and Schematics Note: Third-party components shown in the following drawings are included as examples only. Developer Board This developer board drawing shows the major board components. MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide... - Page 17 DEVELOPER BOARD AND SCHEMATICS MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide...
-
Page 18: Assembly Diagram
DEVELOPER BOARD AND SCHEMATICS Assembly Diagram MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide... -
Page 19: Bottom
DEVELOPER BOARD AND SCHEMATICS Bottom MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide... -
Page 20: Developer Board Block Diagram
DEVELOPER BOARD AND SCHEMATICS Developer Board Block Diagram MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide... -
Page 21: Developer Board Schematics
DEVELOPER BOARD AND SCHEMATICS Developer Board Schematics MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide... - Page 22 DEVELOPER BOARD AND SCHEMATICS MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide...
- Page 23 DEVELOPER BOARD AND SCHEMATICS MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide...
- Page 24 DEVELOPER BOARD AND SCHEMATICS MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide...
- Page 25 DEVELOPER BOARD AND SCHEMATICS MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide...
- Page 26 DEVELOPER BOARD AND SCHEMATICS MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide...
- Page 27 DEVELOPER BOARD AND SCHEMATICS MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide...
- Page 28 DEVELOPER BOARD AND SCHEMATICS MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide...
- Page 29 DEVELOPER BOARD AND SCHEMATICS MultiConnectTM PCIe MTPCIE-H5/MTPCIE-BW Developer Guide...
-
Page 30: Board Components
DEVELOPER BOARD AND SCHEMATICS Board Components Jumper Description JP3, JP4, JP5, JP48 Selects CGND or GND for antenna holder grounding. Default is CGND. JP6 allows you to select either the internal 5V regulator (INT PWR) or to choose EXT 5V (EXT PWR). For the EXT PWR, you can use your own external 5V power source and plug it into J11. -
Page 31: Installing A Communications Device Onto The Board
DEVELOPER BOARD AND SCHEMATICS Jumper Description JP90 Not used by PCIe device.This jumper, when installed, connects power to OCG-E device. (When using Developer Kit with OCG-E devices). Not used by PCIe device. Socket for installing PCIe device. J8, J9, J10, J13 Oscilloscope probe ground connections Not used by PCIe device. -
Page 32: Safety Notices And Warnings
SAFETY NOTICES AND WARNINGS Safety Notices and Warnings The following safety statements may be relevant and required in the host product literature. Radio Frequency (RF) Safety Due to the possibility of radio frequency (RF) interference, it is important that you follow any special regulations regarding the use of radio equipment. -
Page 33: User Responsibility
SAFETY NOTICES AND WARNINGS ■ Do not use this device while driving. ■ Respect national regulations on the use of cellular devices in vehicles. ■ If incorrectly installed in a vehicle, operating the wireless device could interfere with the vehicle’s electronics. -
Page 34: Labeling Requirements
LABELING REQUIREMENTS Labeling Requirements Approvals and Certification Your Multi-Tech device is an industry and/or carrier approved modem. ■ PTCRB Requirements (GPRS and HSPA/HSDPA only). The antenna system cannot be altered. If altered, additional PTCRB testing may be required. ■ For HSPA+, HSPA, HSDPA and GPRS Devices The modem's 15-character IMEI (International Mobile Equipment Identity) number is printed on the modem's label. -
Page 35: Host Labeling
LABELING REQUIREMENTS Labels are positioned on the device as follows: Host Labeling The following statements are required to be on the host label: ■ This device contains FCC ID: {Add the FCC ID of the specific device} ■ This device contains equipment certified under IC ID: {Add the IC ID of the specific device} MultiConnect PCIe MTPCIE-H5/MTPCIE-BW Developer Guide... -
Page 36: Regulatory Statements
REGULATORY STATEMENTS Regulatory Statements R&TTE Directive Compliance The CE mark is affixed to this product to confirm compliance with the following European Community Directives: Council Directive 2004/108/EC of 15 December 2004 on the approximation of the laws of Member States relating to electromagnetic compatibility;... -
Page 37: Restriction Of The Use Of Hazardous Substances (Rohs)
REGULATORY STATEMENTS Restriction of the Use of Hazardous Substances (RoHS) Multi-Tech Systems, Inc Certificate of Compliance 2011/65/EU Multi-Tech Systems confirms that its embedded products comply with the chemical concentration limitations set forth in the directive 2011/65/EU of the European Parliament (Restriction of the use of certain Hazardous Substances in electrical and electronic equipment - RoHS). -
Page 38: Requirements For Cellular Antennas With Regard To Fcc/Ic Compliance
REGULATORY STATEMENTS 1. l'appareil ne doit pas produire de brouillage, et 2. l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. Warning: Changes or modifications to this radio device not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. -
Page 39: Environmental Notices
ENVIRONMENTAL NOTICES Environmental Notices Waste Electrical and Electronic Equipment Statement Note: This statement may be used in documentation for your final product applications. WEEE Directive The WEEE Directive places an obligation on EU-based manufacturers, distributors, retailers, and importers to take- back electronics products at the end of their useful life. -
Page 40: Information On Hs/Ts Substances According To Chinese Standards
ENVIRONMENTAL NOTICES Information on HS/TS Substances According to Chinese Standards In accordance with China's Administrative Measures on the Control of Pollution Caused by Electronic Information Products (EIP) # 39, also known as China RoHS, the following information is provided regarding the names and concentration levels of Toxic Substances (TS) or Hazardous Substances (HS) which may be contained in Multi-Tech Systems Inc. -
Page 41: Information On Hs/Ts Substances According To Chinese Standards (In Chinese)
ENVIRONMENTAL NOTICES Information on HS/TS Substances According to Chinese Standards (in Chinese) 依 依 照 照 中 中 国 国 标 标 准 准 的 的 有 有 毒 毒 有 有 害 害 物 物 质 质 信 信 息 息 根据中华人民共和国信息产业部... -
Page 42: Antennas, Cables, Gps
ANTENNAS, CABLES, GPS Antennas, Cables, GPS Antenna System Cellular Devices The cellular/wireless performance depends on the implementation and antenna design. The integration of the antenna system into the product is a critical part of the design process; therefore, it is essential to consider it early so the performance is not compromised. -
Page 43: Antenna Cable Information
ANTENNAS, CABLES, GPS 3G Antenna Requirements/Specifications Category Description Frequency Range 824 – 960 MHz / 1710 – 1990 MHz / 1920 – 2170 MHz Impedance 50 Ohms VSWR VSWR should not exceed 2.0:1 at any point across the bands of operation Typical Radiated Gain 850 MHz 3.17 dBi... -
Page 44: Gps Antennas
ANTENNAS, CABLES, GPS Band Loss 0.40 1800 0.70 1900 0.63 2100 0.70 GPS Antennas GPS Antenna Specifications Category Description Frequency Range 1575.24 MHz Impedance 50 Ohms VSWR 2.0:1 max Gain 10-30 dBi LNA Current Consumption 40 mA max Noise Figure <... -
Page 45: Oem Integration
ANTENNAS, CABLES, GPS Bluetooth and Wi-Fi Antenna Cable Information Use the following UFL to R-SMA RF cable to connect the device to the antenna. Description: Coax R-SMA to UFL 6 inch (152.4mm) Multi-Tech Part Number: 45009628L Multi-Tech ordering information: Model Quantity CARSMA-UFL-1 CARSMA-UFL-10... - Page 46 ANTENNAS, CABLES, GPS FCC Grant Notes The OEM should follow all the grant notes listed below. Otherwise, further testing and device approvals may be necessary. Installing in Portable Equipment The available scientific evidence does not show that any health problems are associated with using low power wireless devices.
-
Page 47: Device Overview
Verizon Wireless. Before you can use the modem, you must set up a cellular data account with your service provider. Each service provider has its own process for adding devices to their network. Refer to Multi-Tech's Cellular Activation site http://www.multitech.com/activation.go for step-by-step instructions on activating your cellular modem with your service provider. - Page 48 DEVICE OVERVIEW ■ For Wi-Fi, use the Linux calibrator tool. The WiFi drivers are compat-wireless drivers for TI WL12XX build under Linux kernel 2.6.39.4. For more information see http://linuxwireless.org/en/users/Drivers/wl12xx/calibrator. ■ For BlueTooth, use the Linux hcitool. Both tools are currently available inside our embedded Linux systems. These tools do not run on PCs. To invoke the tools, secure shell into the device using putty or another tool from your Windows computer.
-
Page 49: Mechanical Drawing
MECHANICAL DRAWING Mechanical Drawing MTPCIE-H5-xx MultiConnect PCIe MTPCIE-H5/MTPCIE-BW Developer Guide... -
Page 50: Mtpcie-Bw
MECHANICAL DRAWING MTPCIE-BW MultiConnect PCIe MTPCIE-H5/MTPCIE-BW Developer Guide... -
Page 51: Specifications
SPECIFICATIONS Specifications MTPCIE-H5 Specifications Category Description General Standards Penta-band HSPA+ 21 Quad-band GSM/GPRS/EDGE SMS is based on CS/Packet-Switched (PS) domain of GSM and WCDMA USB Interface is CDC-ACM compliant Frequency Bands Penta-band HSPA: 850/900/1700/1900/2100 MHz Quad-band GSM/GPRS/EDGE: 850/900/1800/1900 MHz Speed Data Speed HSDPA data service of up to 21.0 Mbps downlink/5.76 Mbps uplink Interface... - Page 52 SPECIFICATIONS Category Description Point-to-Point messaging Mobile-Terminated SMS Mobile-Originated SMS Wi-Fi IEEE 802.11 b,g, n, compliant SDIO host interface (0-1.8V) Bluetooth Serial Port Protocol (SPP) UART Interface 1.8V High-sensitivity of indoor reception, better than -165 Cold start autonomous -147 dBm Hot start autonomous -161 dBm Tracking mode -166 dBm Accuracy 3 m TTF from cold start 42 s...
-
Page 53: Mtpcie-H5 Dc Electrical Characteristics
SPECIFICATIONS Category Description Safety Compliance UL 60950-1 cUL 60950-16t EN 60950-1 Network Compliance GCF Certified Module MTPCIE-H5 DC Electrical Characteristics Units: Volts Parameter Minimum Maximum 3.3 Volt Powered Input Low Level 0.35 Input High Level Output Low Level Output High Level Absolute Maximum Rating Voltage at any signal pin: 0.0V to +1.9V PCIE Connector Leads... - Page 54 SPECIFICATIONS PIN # Name Function Type Notes MTPCIE-H5- MTPCIE- MTPCIE- V-BW H5-V SDIO_D2 Wi-Fi SDIO_D2 1.8V function function BT_TXD Bluetooth 1.8V Transmit data function function SDIO_D3 Wi-Fi SDIO_D3 1.8V function function BT_RTS Bluetooth RTS 1.8V function function Ground BT_CTS Bluetooth CTS 1.8V function function...
- Page 55 SPECIFICATIONS PIN # Name Function Type Notes MTPCIE-H5- MTPCIE- MTPCIE- V-BW H5-V 3G_ONOFF I 3G Cellular 1.8V Active Low: On/Off (low Properly turn off active) and detach from the carrier network. Initial power on needs at least 5.5 seconds before AT command are issued.
- Page 56 SPECIFICATIONS PIN # Name Function Type Notes MTPCIE-H5- MTPCIE- MTPCIE- V-BW H5-V 3.3Vaux 3.3Vaux GPIO_1 Bluetooth 1.8V No connect General purpose function function Ground Ground 3G_DVI_W I/O 3G Cellular 1.8V digital voice function control line Ground 3G_DVI_CL I/O 3G Cellular 1.8V digital voice function...
- Page 57 SPECIFICATIONS PIN # Name Function Type Notes MTPCIE-H5- MTPCIE- MTPCIE- V-BW H5-V LED_WWA O 3G Cellular STAT 1.8V Command to LED Output enable LED function, AT#GPIO=1,0,2. This pin needs an external transistor to drive an external LED. Therefore, status indicated is reversed with respect to the pin status:...
- Page 58 SPECIFICATIONS PIN # Name Function Type Notes MTPCIE-H5- MTPCIE- MTPCIE- V-BW H5-V 3G Cellular UART 1.8V Avoid having any HIGH logic level function signal applied to any 3G input digital pins when the 3G module is powered off or during an ON/OFF transition.
-
Page 59: Typical Power Flow
SPECIFICATIONS Typical Power Flow ■ Peak inrush current is a fast rising pulse at power start up on board supplies or modem cap charging. It is influenced by the design and limits of the power supply providing power to the device. ■... -
Page 60: Power Measurements
SPECIFICATIONS Power Measurements Multi-Tech Systems, Inc. recommends that you incorporate a 10% buffer into your power source when determining product load. MTPCIE-H5 Radio Cellular Call Box Average Measured Current TX Pulse (Avg) Total Inrush Charge Protocol Connection No (Amps) at Maximum Power Amplitude Current Measured in Data (Amps) -
Page 61: Application Notes
APPLICATION NOTES Application Notes RF Performances RF performances are compliant with the ETSI recommendation 05.05 and 11.10. The module’s radio transceiver meets the requirements of 3GPP Release 5 & 6. All values indicated are conducted. Receiver Features for Cellular Devices Category Description GSM 850 Sensitivity... -
Page 62: Frequency Bands
APPLICATION NOTES Frequency Bands Mode Freq. TX (MHz) Freq. RX (MHz) Channels TX-RX offset GSM850 824.2- 848.8 869.2 - 893.8 128 - 251 45 MHz EGSM900 890.0 - 914.8 935.0 - 959.8 0 - 124 45 MHz 880.2 - 889.8 925.2 - 934.8 975 - 1023 45 MHz... -
Page 63: Installing Drivers For Non-Uip Hspa+ Devices
INSTALLING DRIVERS FOR NON-UIP HSPA+ DEVICES Installing Drivers for Non-UIP HSPA+ Devices HSPA+ Device Driver Installation Installing on Linux The Linux OS includes a generic USB driver for modems supporting CDC/ACM. Multi-Tech tested the following Linux operating systems and all used port ttyACM0. If your system has another device using this port, your port numbers may be different. -
Page 64: Windows Release Notes
Not supported with version 8.00.04. Downloading the Windows USB Driver If you haven't downloaded the driver: Go to the Multi-Tech Support page, www.multitech.com/support.go and select your product from the Product Families drop down list. Click Drivers. Select h5-u_windriver_8.00.04.zip and Save the driver to your computer. -
Page 65: Installing On Windows 8, 7 Or Vista
INSTALLING DRIVERS FOR NON-UIP HSPA+ DEVICES Installing on Non-USB Powered Devices Turn on the device and wait 15 seconds before connecting the USB cable. If you connect the USB cable before supplying power to the device, the Windows Add New Hardware Wizard may appear and show Cannot Install this Hardware. -
Page 66: Installing On Windows Xp
INSTALLING DRIVERS FOR NON-UIP HSPA+ DEVICES Installing on Windows XP This process installs four drivers. Note: If you previously installed USB drivers for this device, uninstall them before installing or re-installing this driver. Uninstall all existing drivers for this device. Refer to Uninstall Windows Drivers for details. Before you connect the device (disconnect the device if you connected it): Go to the location where you extracted the driver and open the H5-USB\Driver folder. -
Page 67: Uninstalling Windows Drivers
INSTALLING DRIVERS FOR NON-UIP HSPA+ DEVICES Uninstalling Windows Drivers Note: Disconnect the device before uninstalling drivers. Windows 8 To uninstall drivers from Windows 8: Open Windows Programs and Features. Uninstall Windows Driver Package – Intel Mobile Communications (flashusb) USB. Uninstall all Telit modems, ports, and USB drivers. Windows 7 or Vista To uninstall drivers from Windows 7 or Vista: Open Programs and Features from the Windows Control Panel. -
Page 68: Developer Note
INSTALLING DRIVERS FOR NON-UIP HSPA+ DEVICES Right-click on the Telit Mobile Modem and select Uninstall. Select Delete the driver software for this device and click OK. Repeat the removal steps to uninstall each Telit port and the Telit Universal Serial Bus Control. Developer Note By default each time an H5 device with a different IMEI value is connected using this USB driver, the operating system will not require searching for the drivers again and uses the same ports created in a previous installation. -
Page 69: Using Linux With H5 Devices
USING LINUX WITH H5 DEVICES Using Linux with H5 Devices Shell Commands Testing Serial Ports To test the serial ports created by the driver, type in a shell: # cat /dev/ttyACM0 & # echo –en "ATE0\r" > /dev/ttyACM03 # echo –en "AT\r" > /dev/ttyACM0 Note: Sending ATE0 is required, to avoid issues in the terminal output. -
Page 70: C Programming
USING LINUX WITH H5 DEVICES # If you want to use the HSDPA link as your gateway defaultroute # pppd must not propose any IP address to the peer #noipdefault ipcp-accept-local ipcp-accept-remote # Keep modem up even if connection fails #persist # Hardware flow control crtscts... -
Page 71: Read()
USING LINUX WITH H5 DEVICES pathname – file name with its own path. flags – is an int specifying file opening mode: is one of O_RDONLY, O_WRONLY or O_RDWR which request opening the file read-only, write-only or read/write, respectively. Returns: The new file descriptor fildes if successful, -1 otherwise. -
Page 72: Write()
USING LINUX WITH H5 DEVICES write() The write() function writes nbyte bytes from the buffer that are pointed by buf to the file associated with the open file descriptor. fildes. Header File unistd.h Prototype: ssize_t write(int fildes, const void *buf, size_t nbyte) Parameters: fildes –... -
Page 73: Test Program()
USING LINUX WITH H5 DEVICES Example Close the ttyACMx file. if(close(fd) < 0) /* Error Management Routine */ } else { /* File Closed */ Test Program() The following simple C program is useful to test the modem issuing an AT command. The program opens the /dev/ttyACM0 interface and calls the write() and the read() function to send an AT command and receive the subsequent output. - Page 74 USING LINUX WITH H5 DEVICES else printf ( "%s\n", "succeed" ); return (fd); int main() int serialFD = open_port(USB); char buf[BUFSIZE]; memset(buf,0,BUFSIZE); write(serialFD, "AT\r" , strlen("AT\r")); sleep(1); read( serialFD, buf, BUFSIZE ); printf("The string is: %s\n", buf); close(serialFD); return 0; The sleep instruction is required because the modem response after issuing the AT command is not immediate, so you need to wait a bit before reading.
-
Page 75: Index
INDEX Index ESD ................15 European Community Directives ........36 account activation............47 activation cellular devices............47 antenna .................42 cable..............43 45 grant notes...............45 cellular devices............42 frequency bands ............62 GPS................44 Wi-Fi RF..............44 assembly diagram ............18 antenna..............44 ground plane..............14 Bluetooth ..............47 build options ..............47 handling precautions due to ESD........15 hazardous substances ...........37 cable.................43 45 host labeling..............45... - Page 76 INDEX shell commands ............69 troubleshoot driver..........63 transmitter features............61 maintenance ..............33 uninstall.................67 mechanical drawing ..........49 50 USB................13 67 design consideration..........15 driver download............64 notes ................64 noise suppression............14 USB driver install..............63 65 66 uninstall ..............67 user responsibility............33 PC board layout.............14 pinout................53 USB................13 pinout table..............8 vehicle safety ..............32 standard ..............11 Vista .................65 67...