145 lines
5.7 KiB
Plaintext
145 lines
5.7 KiB
Plaintext
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README
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^^^^^^
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README for NuttX port to the u-blox C027 dev board.
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The board is intended for prototyping software for u-blox cellular modems (SARA
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or LISA families) and the u-blox GPS receiver (MAX-7Q, MAX-M8Q, or other,
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depending on board revision).
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This board features the LPC1768 MCU and is related to the Embedded Artists' base
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board with the NXP the LPCXpresso daughter board, see
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configs/lpcxpresso-lpc1768/README.txt.
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The board also features an embedded USB debugger.
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Contents
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^^^^^^^^
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u-blox C027 Board
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Configurations
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u-blox C027 Board
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^^^^^^^^^^^^^^^^^
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Pin Description Connector On Board
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-------------------------------- --------- --------------
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P0[0]/RD1/TXD3/SDA1 D14 TXD3/SDA1
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P0[1]/TD1/RXD3/SCL1 D15 RXD3/SCL1
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P0[2]/TXD0/AD0[7] USBTXD
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P0[3]/RXD0/AD0[6] USBRXD
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P0[4]/I2SRX-CLK/RD2/CAP2.0 CANRD CAN_RX2
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P0[5]/I2SRX-WS/TD2/CAP2.1 CANTD CAN_TX2
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P0[6]/I2SRX_SDA/SSEL1/MAT2[0] CANS SSEL1
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P0[7]/I2STX_CLK/SCK1/MAT2[1] MDMUSBDET
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P0[8]/I2STX_WS/MISO1/MAT2[2] MDMLVLOE
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P0[9]/I2STX_SDA/MOSI1/MAT2[3] MDMILVLOE
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P0[10]/TXD2/SDA2 GPSTXD
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P0[11]/RXD2/SCL2 GPSRXD
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P0[15]/TXD1/SCK0/SCK MDMTXD
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P0[16]/RXD1/SSEL0/SSEL MDMRXD
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P0[17]/CTS1/MISO0/MISO MDMCTS
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P0[18]/DCD1/MOSI0/MOSI MDMDCD
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P0[19]/DSR1/SDA1 MDMDCR
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P0[20]/DTR1/SCL1 MDMDTR
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P0[21]/RI1/MCIPWR/RD1 MDMRI
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P0[22]/RTS1/TD1 MDMRTS
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P0[23]/AD0[0]/I2SRX_CLK/CAP3[0] A0 I2S_CLK
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P0[24]/AD0[1]/I2SRX_WS/CAP3[1] A1 I2S_WS
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P0[25]/AD0[2]/I2SRX_SDA/TXD3 A2 I2S_SDA
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P0[26]/AD0[3]/AOUT/RXD3 A3 AD0.3/AOUT
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P0[27]/SDA0/USB_SDA GPSSDA
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P0[28]/SCL0 GPSSCL
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P0[29]/USB_D+ MDMUSBDP
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P0[30]/USB_D- MDMUSBDM
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P1[0]/ENET_TXD0 ENET_TXD0
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P1[1]/ENET_TXD1 ENET_TXD1
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P1[4]/ENET_TX_EN ENET_TX_EN
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P1[8]/ENET_CRS ENET_CRS
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P1[9]/ENET_RXD0 ENET_RXD0
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P1[10]/ENET_RXD1 ENET_RXD1
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P1[14]/ENET_RX_ER ENET_RX_ER
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P1[15]/ENET_REF_CLK ENET_REF_CLK
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P1[16]/ENET_MDC ENET_MDC
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P1[17]/ENET_MDIO ENET_MDIO
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P1[18]/USB_UP_LED/PWM1[1]/CAP1[0] GPSRST
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P1[19]/MC0A/USB_PPWR/N_CAP1.1 GPSPPS
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P1[20]/MCFB0/PWM1.2/SCK0 D13 PWM1.2/SCK0
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P1[21]/MCABORT/PWM1.3/SSEL0 D10 PWM1.3/SSEL0
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P1[22]/MC0B/USB-PWRD/MAT1.0 GPSINT
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P1[23]/MCFB1/PWM1.4/MISO0 D12 PWM1.4/MISO0
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P1[24]/MCFB2/PWM1.5/MOSI0 D11 PWM1.5/MOSI0
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P1[25]/MC1A/MAT1.1 ETH_LED_LNK
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P1[26]/MC1B/PWM1.6/CAP0.0 ETH_LED_SPD
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P1[27]/CLKOUT/USB-OVRCR-N/CAP0.1 ETH_OSC_EN
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P1[28]/MC2A/PCAP1.0/MAT0.0 ETH_RST
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P1[29]/MC2B/PCAP1.1/MAT0.1 GPSEN
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P1[30]/VBUS/AD0[4] A4 AD0.4
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P1[31]/SCK1/AD0[5] A5 AD0.5
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P2[0]/PWM1.1/TXD1 D3 PWM1.1
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P2[1]/PWM1.2/RXD1 D5 PWM1.2
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P2[2]/PWM1.3/CTS1/TRACEDATA[3] D6 PWM1.3
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P2[3]/PWM1.4/DCD1/TRACEDATA[2] D9 PWM1.4
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P2[4]/PWM1.5/DSR1/TRACEDATA[1] D8 PWM1.5
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P2[5]/PWM1[6]/DTR1/TRACEDATA[0] MDMEN
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P2[6]/PCAP1[0]/RI1/TRACECLK MDMPWRON
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P2[7]/RD2/RTS1 MDMGPIO1
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P2[8]/TD2/TXD2 MDMRST
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P2[9]/USB_CONNECT/RXD2 MDMUSBCON
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P2[10]/EINT0/NMI ISP_PAD
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P2[11]/EINT1/I2STX_CLK D7 EINT1
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P2[12]/EINT2/I2STX_WS D4 EINT2
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P2[13]/EINT3/I2STX_SDA D2 EINT3
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P3[25]/MAT0.0/PWM1.2 LED
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P4[28]/RX-MCLK/MAT2.0/TXD3 D0 TXD3
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P4[29]/TX-MCLK/MAT2.1/RXD3 D1 RXD3
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Configurations
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^^^^^^^^^^^^^^
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nsh
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---
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The nsh configuration allows to test the modem and the GPS receiver. The modem
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can be tested in either the internal TCP/IP stack mode or with the NuttX TCP/IP
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stack and pppd.
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Modem starts in power-down mode and has to be switched on, e.g., using the nsh
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command:
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nsh> ubloxmodem on
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To connect using the NuttX TCP/IP stack, use pppd. At the time of writing the
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pppd app is located in apps/examples/pppd and requires setting correct login
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details in the source code.
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To connect using the internal u-blox TCP/IP stack, use the chat app. Its
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configuration is done in configs/u-blox-c027/nsh/defconfig and can be adjusted
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using 'make menuconfig'.
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The NuttX u-blox modem driver is included like this:
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CONFIG_MODEM=y
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CONFIG_MODEM_U_BLOX=y
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The nsh app that allows power control is included with the default configuration
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as follows:
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CONFIG_EXAMPLES_UBLOXMODEM=y
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CONFIG_EXAMPLES_UBLOXMODEM_TTY_DEVNODE="/dev/ttyS1"
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CONFIG_EXAMPLES_UBLOXMODEM_DEVNODE="/dev/ubxmdm"
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The modem driver uses two device nodes. The TTY device is the modem terminal,
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while the other device is used for general control via GPIO such as power
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control. At the moment only one modem is supported, and the corresponding device
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control node is /dev/ubxmdm.
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The chat app allows to run scripts. A few such scripts are preset in the
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defconfig:
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CONFIG_EXAMPLES_CHAT_PRESET[0..3]:
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0 - set up the provider context with username and password,
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1 - connect to the provider,
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2 - open a TCP socket to the u-blox test server,
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3 - test the TCP socket server operation and close the socket.
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