CUGSM113#UFL R&D Software Solutions

kick-start for c-uGSM 1.13 by itbrainpower.net ARDUINO & RASPBERRY PI GSM (VOICE/SMS/GPRS/DTMF) shield (micro) 1. HARDWARE ............................................................................................................ 2 1.1 c-uGSM shield PIN DEFINITION ............................................................................. 2 1.2 LOGICAL WIRRING c-uGSM shield.......................................................................... 3 1.2.1 General information ................................................................................... 3 1.2.2 Digital PINS connection correspondence with Arduino and Raspberry PI.............. 3 1.2.3 Connecting with UNO (or any ATMega 328 shield)........................................... 3 1.2.4 Connecting with MEGA2560 (SOFTWARE SERIAL mode)................................... 4 1.2.5 Connecting with DUE or MEGA2560 (HARDWARE SERIAL mode)........................ 4 1.2.6 Connecting with Raspberry PI ...................................................................... 5 1.3 POWERING the c-uGSM shield............................................................................... 5 1.3.1 General powering information ...................................................................... 5 1.3.2 Portable stand-alone Lithium Polymer battery powering schema ..................... 6 1.3.3 WITH Lithium Polymer battery configuration and VIA Vin (+5V)...................... 6 1.3.4 WITH Lithium Polymer battery configuration and VIA USB.............................. 6 1.3.5 ONLY Lithium Polymer battery charger configuration ..................................... 6 1.3.6 WITHOUT Lithium Polymer battery powering schema (DDRV) ......................... 6 1.4 SERIAL (and SERIAL USB bridge) communication..................................................... 7 1.5 SIM card support ................................................................................................ 7 1.6 RAMDISK support................................................................................................ 7 1.7 LEDs ................................................................................................................. 7 1.8 Audio interface ................................................................................................... 7 2. Debugging (your) AT CHAT..................................................................................... 8 2.1 Preparation phase ............................................................................................... 8 2.2 Program AT chat debugging how-to........................................................................ 8 3. Software examples and code support...................................................................... 9 3.1 c-uGSM series GSM (VOICE/SMS/GPRS/DTMF) shield (micro) kickstart for Arduino........ 9 3.2 c-uGSM series GSM (VOICE/SMS/GPRS/DTMF) shield (micro) ARDUINO examples ........ 9 3.3 c-uGSM series GSM (VOICE/SMS/GPRS/DTMF) shield (micro) RPI examples ................. 9 3.4 Quectel M95 AT command manual ......................................................................... 9 4 General/legal software/hardware considerations .................................................. 10 kick-start for c-uGSM 1.13 by itbrainpower.net ARDUINO & RASPBERRY PI GSM (VOICE/SMS/GPRS/DTMF) shield (micro) 1. HARDWARE 1.1 c-uGSM PIN DEFINITION POWERING, SERIAL and CONTROL INTERFACE In the left edge of the top PCB side, bottom to top: 1. RX(TXD) - GSM SHIELD SERIAL RX (TXD) - input 2. TX(RXD) - GSM SHIELD SERIAL TX (RXD) - output 3. RESET - GSM SHIELD RESET - input, active LOW* 4. ON /OFF - POWER ON / OFF - input, active LOW* 5. Vusb - POWER PIN - output +5V (USB +5V) 6. Vin - POWER PIN - input +5V for LiPol charger only 7. Vcc - POWER PIN - input/output +4V** 8. GND - POWER and DIGITAL GROUND 9. RI - GSM SHIELD RING INDICATOR - output 10. STATUS - GSM SHIELD STATUS - output 11. RTS - GSM SHIELD READY TO SEND - output 12. CTS - CLEAR TO SEND - input * min. 200msec. pulse * read POWERING SECTION, bellow BATTERY and ANTENNA In the right edge of the top PCB side, bottom to top: 1. + LiPol - connect + pole of the LiPol battery 2. + LiPol - connect - pole of the LiPol battery 3. GSM antenna connector - uFL or SMA F Image 1(TOP) HIGH POWER AUDIO INTERFACE** and BACKUP BATTERY In the top edge of the top PCB side, left to right: 1. GND - GND connection ** 2. AGND - Analog GND for analog audio 3. SPK+/SPKP - loudspeaker output + pole*** 4. SPK-/SPKN - loudspeaker output - pole*** 5. MIC-/MICN - cap. microphone input - pole 6. MIC+/MICP - cap. microphone input + pole 8. BkBat+ : Backup battery + pole**** 9. BkBat- : Backup battery - pole *** pin1 on AUDIO interface can be used as secondary GND connection on the board. *** WARNING The HIGH POWER AUDIO output may drive up to 600mW RMS Headset usage can damage your ears **** WARNING For non rechargeable battery (eg. Silver Oxide coin cell): insert one diode (1N4148) between the battery plus pole and the GSM shieldBkBat pad. 1N4148 anode must be connected with the battery. SWITCHES In the bottom edge of the top PCB side, left to right: 1. RESET - GSM SHIELD RESET 2. ON/OFF - GSM SHIELD TOOGLE POWER DUAL SIM SOCKET AND USB PORT In the bottom PCB side, left to right: 1. DUAL SIM SOCKET (slide in type)- SIM0 (default SIM) placed underneath (in the very proximity of the PCB) and SIM1 (secondary SIM) placed above SIM0 2. USB PORT - micro USB type A used for POWERING and as SERIAL to USB bridge adapter Image 1(bottom)