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The provided headers on the development board allow you to break the power supply lines and measure current consumption.

J1 (3V3_WIFI), J19 (3V3_MCU), and J15 (3V3_VDD) are available to connect an ammeter between the two pins. To enable a
current measurement, the shorted solder bridge at each header will need to be cut first (

Figure 11

Figure 11: Current measurement schematic and PCB modifications

Содержание Sterling-EWB

Страница 1: ...Version 1 1 ...

Страница 2: ...Americas 1 800 492 2320 Europe 44 1628 858 940 Hong Kong 852 2923 0610 Version Date Notes Contributor s Approver 1 0 17 July 2019 Initial version Dave Neperud Jay White 1 1 06 Aug 2019 Fixed typo in EWB development Kit power supply diagram Figure 4 Dave Neperud Jay White ...

Страница 3: ... Interface 8 6 4 Boot Option Configuration Switches 8 6 5 DVK Disconnect Switches 8 6 6 UART Interfaces 9 6 7 Indicator LEDs 9 6 8 Push Buttons 9 6 9 MCU Wake Button 10 6 10 BME680 Gas Pressure Temperature Humidity Sensor 10 6 11 External Host Interface 10 7 Breakout Connector Pinouts 12 7 1 Trace debugging JTAG Interface 12 7 2 Bluetooth Interface 12 7 2 1 Bluetooth PCM Audio Interface 12 7 2 2 B...

Страница 4: ...pole antenna Supplied with development kit part 455 00031 only External antenna 2 dBi FlexPIFA Laird part 001 0014 with integral RF coaxial cable with 100 mm length and IPEX 4 compatible RF connector The Sterling EWB development board is designed to be used directly with the Cypress WICED SDK The default configurations provided in this document will enable operation and software development on thi...

Страница 5: ...0V DC Bench Supply Header 4 4 10V DC 4xAA Battery Terminal Connector USB2 opt External Host Interface Header J4 LED1 LED4 External 3 3V USB Header SW8 Select single or separate WIFI 3 3V power supply SW7 Select USB or Ext DC power source Module Reset Button USB1 Debug Program Interface JTAG Connector SW5 SW6 BOOT Option Select External VBAT Header J5 EWB PIN Header J6 EWB PIN Header Bluetooth Inte...

Страница 6: ...th 453 00014 EWB module with integrated chip antenna IMPORTANT To ensure correct out of the box configuration the EWB development board switches must be configured as shown in Figure 3 The default power connection is using the provided USB cable plugged into the DEBUG PROGRAM micro USB port Figure 3 Correct EWB development board 455 00030 or 455 00031 switch settings image for 455 00030 ...

Страница 7: ...into DC jack connector J18 External DC bench supply 4 4V 10V using 2 pin header J9 AA batteries Four AA batteries connected to terminal block J8 The external power sources are fed into selection switch SW7 which allows the selection between either USB sources or the external DC sources The external power source is regulated to a fixed 3 3V on the development board Two regulators are on the develop...

Страница 8: ... the STM32F412 MCU on the EWB module The FT2232H has an external EEPROM which is pre programmed with the custom VID 0x0A5C and PID 0x43FA to enable the USB port to interface with the Cypress WICED software development kit as well as provide a COM port for monitoring the debug output of the Laird Sterling EWB demo application The EWB development board boot option is configured by setting SW5 and SW...

Страница 9: ...ut PA11 PB13 N A The UART header pinouts are designed to be used with FTDI USB UART TTL 3 3V converter cables found at http www ftdichip com Products Cables USBTTLSerial htm One example is FTDI part TTL 232R 3V3 The development board includes six indicator LEDs Four LEDs LED1 LED4 are for development use and are connected to the MCU port of the EWB as indicated in Table 3 Table 3 EWB LEDs and sign...

Страница 10: ...EWB STM32F412 Port 1 GND Ground I 2 VCC_EXT_MCU External Host I O Voltage 1 I 3 UART_CTS CTS flow control to external host O UART3_RTS PB14 4 UART_TX TX Data from external host I UART3_RX PC5 5 UART_RX RX Data to external host O UART3_TX PD8 6 UART_RTS RTS flow control from external host I UART3_CTS PB13 7 RESETn EWB MCU reset I MICRO_RST_N 8 WKUPn EWB MCU wake I MICRO_WKUP PA0 9 BT_WAKE Wake up S...

Страница 11: ...connect com 11 Copyright 2019 Laird All Rights Reserved Americas 1 800 492 2320 Europe 44 1628 858 940 Hong Kong 852 2923 0610 1 2 Figure 7 External HOST interface schematic and location of solder bridge modifications ...

Страница 12: ...hematic Development board header J3 provides access to the Bluetooth radio on the EWB module Figure 9 Figure 9 Bluetooth Interface PIN assignments Four PCM audio connections are available BT_PCM_CLK BT_PCM_IN BT_PCM_OUT and BT_PCN_SYNC BT_PCM_CLK and BT_PCN_SYNC can be master output or slave input Three Bluetooth General Purpose I O lines are available for expansion capability BT_HOST_WAKE output ...

Страница 13: ...ers Table 6 J5 and J6 pin mapping Pin Connection Pin Connection Pin Connection Pin Connection 1 GND 2 MICRO_WKUP PA0 1 GND 2 PA2 3 PF7 4 PC3 3 PA5 4 PA3 5 PE5 6 PE0 5 PA4 6 PB0 7 PF6 8 PB9 7 PA6 8 PC4 9 PF9 10 PC11 9 PA7 10 PB1 11 PF8 12 PE3 11 GND 12 PE7 13 GND 14 MICRO_RST_N 13 SPI4_NSS PE11 14 PE8 15 PA1 16 PC13 15 SPI4_SCK PE12 16 GND 17 PB6 18 PB7 17 SPI4_MISO PE13 18 I2C2_SCL PB10 19 PB8 20 ...

Страница 14: ...n the development board allow you to break the power supply lines and measure current consumption J1 3V3_WIFI J19 3V3_MCU and J15 3V3_VDD are available to connect an ammeter between the two pins To enable a current measurement the shorted solder bridge at each header will need to be cut first Figure 11 Figure 11 Current measurement schematic and PCB modifications ...

Страница 15: ..._BK2_IO2 PC4 12 QUADSPI_BK2_IO3 PC5 13 MICRO_SPI1_MOSI 1 PA7 14 BOOT1 PB2 15 QUADSPI_CLK PB1 16 QUADSPI_BK2_IO0 PE7 17 MICRO_SPI4_NSS PE11 18 QUADSPI_BK2_IO1 PE8 19 MICRO_SPI4_SCK PE12 20 MICRO_I2C2_SCL PB10 21 MICRO_SPI4_MISO PE13 22 MICRO_I2C2_SDA PB11 23 MICRO_SPI4_MOSI PE14 24 MICRO_GPIO_16 PE15 26 MICRO_SPI2_NSS PB12 27 MICRO_SPI2_SCK PB13 28 MICRO_SPI2_MISO PB14 30 MICRO_SPI2_MOSI PB15 31 MI...

Страница 16: ...ICRO_JTAG_TDO PB3 55 PC13 PC13 56 MICRO_ADC_IN1 PA1 57 MICRO_JTAG_TCK PA14 60 MICRO_RST_N NRST 64 MICRO_JTAG_TRSTN PB4 65 MICRO_GPIO_0 PE3 66 QUADSPI_BK1_IO0 PF8 67 QUADSPI_BK2_NCS PC11 68 QUADSPI_BK1_IO1 PF9 69 MICRO_I2S2_WS PB9 70 QUADSPI_BK1_IO3 PF6 71 MICRO_GPIO_30 PE0 72 OSC_32K_IN PC14 73 MICRO_I2S_DI PE5 74 OSC_32K_OUT PC15 76 MICRO_WKUP PA0 78 QUADSPI_BK1_IO2 PF7 79 MICRO_I2S2_SD PC3 1 SPI...

Страница 17: ...S NSS WS WS 4 PA5 SCK CK 5 PA6 MISO BK2_IO0 MCK 6 PA7 MOSI BK2_IO1 SD 7 PA9 TX PA10 RX MOSI PA11 CTS TX MISO PA12 RTS RX MISO PA13 PA14 PA15 BOOT1 PB0 SCK 8 PB1 NSS CLK 9 PB2 PB3 PB4 PB6 TX BK1_NCS SCL PB7 RX SDA PB8 MOSI SCL SDA PB9 NSS SDA SDA WS PB10 TX SCK SCL CS MCK PB11 RX SDA CKIN PB12 CK NSS SCK NSS WS PB13 CTS SCK SCK CK PB14 RTS MISO eSD PB15 MOSI SD PC3 MOSI SD 13 PC4 BK2_IO2 MCK 14 PC5...

Страница 18: ...t Embedded Wireless Solutions Support https www lairdconnect com resources support Copyright 2019 Laird All Rights Reserved Patent pending Any information furnished by Laird and its agents is believed to be accurate and reliable All specifications are subject to change without notice Responsibility for the use and application of Laird materials or products rests with the end user since Laird and i...

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