Silicon Laboratories UG172, User Manual

Page 1: ... well as radio board Silicon Labs Si7021 Relative Humidity and Temperature sensor Ultra low power 128x128 pixel Memory LCD LEDs Push buttons Reset button 20 pin 2 54 mm header for expansion boards Breakout pads for direct access to all WGM110 I O pins Power sources USB 2 x AA battery holder EXTENSION BOARD FEATURES Accelerometer Buttons and LEDs Joystick I2C Expansion ORDERING INFO SLWSTK6120A RAD...

Page 2: ...he Expansion Board contains additional peripherals such as an accelerometer buttons LEDs a joystick and pads for I2C expansion To support software development with SLWSTK6120A for the Wizard Gecko WGM110 Wi Fi Module Silicon Labs also offers a free SDK The SDK includes BGTool which can be used to configure the WGM110 Module and test its functionality 1 2 Kit Contents The following items are contai...

Page 3: ...Virtual COM port Packet Trace Advanced Energy Monitoring Debug Connector ARM Coresight 19 pin OUT External targets IN External debug probes Reset Button Si7021 Relative Temperature Humidity Sensor EXP Header Expansion board connector Expansion Board 3 axis Accelerometer 2x Push Buttons 2x LEDs Analog Joystick I2C device footprint microSD SDHC card slot On the bottom side of the Radio Board Figure ...

Page 4: ...pixel Memory LCD GPIO Board Controller O U T I N MCU I2C Si7021 Temperature Humidity Sensor SPI ADC Input GPIO SPI USB Micro B Connector Micro SD card reader Accelerometer BMA280 Analog Joystick Buttons LEDs Footprint for I2C security device I2C WSTK Mainboard Peripherals Expansion Board Peripherals Radio Board Peripherals USB WSTK Mainboard Figure 3 1 SLWSTK6120A Block Diagram UG172 Wizard Gecko ...

Page 5: ... for easy access to the pins The figure below shows you how the pins of the WGM110 map out to the pin numbers printed on the breakout pads To see the available functions on each please refer to the WGM110 Data Sheet GND VMCU P23 NC P21 NC P19 NC P17 NC GND P15 NC P13 PE0 I2C_SDA P11 PD5 P9 PD4 P7 PD3 P5 PD2 SD_CLK DISP_SCLK P3 PD1 SD_MISO P1 PD0 SD_MOSI DISP_SI GND GND 5V 5V NC NC P45 NC NC P44 P4...

Page 6: ...oard ID SCL Reserved Board Identification WGM110 I O Pin Alternate function SPI_MOSI SPI_MISO SPI_SCK SPI_CS UART_TX UART_RX I2C_SDA GPIO GPIO GPIO GPIO VCOM_CTS VCOM_RTS I2C_SCL Figure 4 3 Expansion Header The pin routing available on the WGM110 Module is very flexible so most peripherals can be routed to any pin However many pins are shared between the Expansion Header and other functions on the...

Page 7: ...one by connecting directly to the appropriate breakout pins The pinout of the connector follows that of the standard ARM Cortex Debug ETM 19 pin connector The pinout is described in detail below 1 2 4 8 6 10 3 5 9 12 13 14 11 15 16 17 18 20 19 TMS SWDIO C2D TCK SWCLK C2CK TDO SWO TDI C2Dps TRACECLK TRACED0 TRACED1 TRACED2 TRACED3 RESET C2CKps Vdevice GND NC Cable Detect NC NC GND GND GND 7 GND Fig...

Page 8: ...led to ground by the external debugger or application for ca ble insertion detection 11 13 NC Not connected 3 5 15 17 19 GND UG172 Wizard Gecko Wi Fi Module Wireless Starter Kit SLWSTK6120A User s Guide Connectors silabs com Smart Connected Energy friendly Rev 1 0 7 ...

Page 9: ...0 Packet Trace 1 Clock Figure 4 5 Simplicity Connector Current drawn from the VMCU voltage pin is included in the AEM measurements while the 3V3 and 5V voltage pins are not To monitor the current consumption of an external target with the AEM unplug the BRD4320A Radio Board from the WSTK Mainboard to avoid having the Radio Board current consumption added to the measurements Table 4 3 Simplicity Co...

Page 10: ...dio board the USB position of the power switch is disconnected Instead a transistor switch on the radio board itself connects the on board regulator to the module power supply when the target USB cable is inserted Please note that this happens regardless of the power switch position so the power switch should be set to USB or BAT when using the radio board USB connector to avoid conflict The trans...

Page 11: ... to the WGM110 Module when booting up This means that removing power to the Board Controller plugging out the J Link USB cable will not generate a RESET but plug ging the cable back in will as the Board Controller boots up 5 4 Battery Holder In radio applications with high output power peak current consumption will exceed the current sourcing capacity of a coin cell battery To support evaluation o...

Page 12: ...stant of 1 ms These buttons are connected to WGM110 Module pins PA2 and PA6 correspondingly The WSTK Mainboard also features two user programmable yellow LEDs marked LED0 and LED1 which are controlled by the GPIO pins on the WGM110 Module These LEDs are connected to WGM110 Module pins PC0 and PC1 correspondingly active high config ured PC1 GPIO User Buttons LEDs UIF_LED0 UIF_LED1 UIF_PB0 UIF_PB1 P...

Page 13: ...y by using the DISP_ENABLE line as follows 0 Board Controller has control of the display 1 User application WGM110 Module has control of the display Power to the LCD display is sourced from the target application power domain when the WGM110 Module controls the LCD display and from the Board Controller s power domain when the DISP_ENABLE line is low Data is clocked in on DISP_MOSI when DISP_CS is ...

Page 14: ... low profile convenient means of protecting the sensor during assembly e g reflow soldering and throughout the life of the product excluding liquids hydrophobic oleophobic and particulates The Si7021 offers an accurate low power factory calibrated digital solution ideal for measuring humidity dew point and temperature in applications ranging from HVAC R and asset tracking to industrial and consume...

Page 15: ... figure below shows how the USB lines are connected to the WGM110 Module USB micro B Connector PF11 USB_DP PF10 USB_DM USB_VBUS USB_VREGI USB_VREGO 4 7uF 1uF VBUS D D WGM110 Figure 6 5 Connection between the Radio Board USB Connector and WGM110 Module Pins UG172 Wizard Gecko Wi Fi Module Wireless Starter Kit SLWSTK6120A User s Guide Peripherals silabs com Smart Connected Energy friendly Rev 1 0 14...

Page 16: ... USART1_CS PE15 GPIO Figure 7 1 Connection between the Expansion Board and the WGM110 Module I O Pins The following sections contain more detailed information about each feature 7 1 Accelerometer The Expansion Board contains a Bosch Sensortec BMA280 triaxial low power low g accelerometer sensor with SPI interface It fea tures 14 bit digital resolution and allows very low noise measurement of accel...

Page 17: ...he push button is not being pressed Likewise when configured as an output 0 will turn the LED on and 1 will turn it off Pressing a push button will also light up the corresponding LED because the LED is controlled by the same line state regardless of whether it is the Module or the push button that pulls the line low The push buttons are debounced by RC filters with a time constant of about 1 ms P...

Page 18: ...e from the joystick in correspondence with the 9 defined main directions Table 7 1 Joystick Resistor Combinations and Expected Output Voltages in 9 Main Directions Direction Resistor combinations kohm Expected joystick output voltage V 1 Center press 0 1 0 1 10 0 033 Up N 60 4 60 4 10 2 831 Up Right NE N E N E 10 21 34 21 34 10 2 247 Right E 33 33 10 2 533 Down Right SE S E S E 10 7 67 7 67 10 1 4...

Page 19: ...power is connected through the WSTK Main Board USB connector 8 1 Virtual COM Port After enabling Virtual Serial Communication VCOM the Board controller makes communication possible using the following interfa ces Virtual USB COM Port using a CDC driver TCP IP by connecting to WSTK using Port 4901 with a telnet client The VCOM functionality allows the target to communicate using a regular serial dr...

Page 20: ...le Wireless Starter Kit 124802042 01 01 16 A02 Figure 9 1 Revision info Table 9 1 Kit Revision History Kit Revision Released Description A02 22 02 2016 Initial kit release 9 2 Errata There are no known errata at present UG172 Wizard Gecko Wi Fi Module Wireless Starter Kit SLWSTK6120A User s Guide Kit Revision History and Errata silabs com Smart Connected Energy friendly Rev 1 0 19 ...

Page 21: ...ision History 10 1 Revision 1 0 Feb 22 2016 Initial release UG172 Wizard Gecko Wi Fi Module Wireless Starter Kit SLWSTK6120A User s Guide Revision History silabs com Smart Connected Energy friendly Rev 1 0 20 ...

Page 22: ...ntroller Power 10 5 3 Wi Fi Module Reset 10 5 4 Battery Holder 10 6 Peripherals 11 6 1 Push Buttons and LEDs 11 6 2 Memory LCD TFT Display 12 6 3 Si7021 Relative Humidity and Temperature Sensor 13 6 4 USB Micro B Connector 14 7 Expansion Board 15 7 1 Accelerometer 15 7 2 Push Buttons and LEDs 16 7 3 Joystick 17 8 Kit Features 18 8 1 Virtual COM Port 18 9 Kit Revision History and Errata 19 9 1 Revi...

Page 23: ...ricate any integrated circuits The products are not designed or authorized to be used within any Life Support System without the specific written consent of Silicon Laboratories A Life Support System is any product or system intended to support or sustain life and or health which if it fails can be reasonably expected to result in significant personal injury or death Silicon Laboratories products ...

Page 24: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Silicon Laboratories SLWSTK6120A ...