151 lines
4.5 KiB
Plaintext
151 lines
4.5 KiB
Plaintext
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README
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======
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This README file discusses the port of NuttX to the Olimex EFM32G880F128-STK
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development board. This board features:
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• EFM32G880F128
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- 32 bit Cortex-M3™
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- 128KiB Program Flash, 16KiB Bytes RAM
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- 85 GPIO, 8 Channel DMA
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- 12 bit ADC 1Msps
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- 3xUART/SPI, 2x low power UART
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- I2C
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- 3x 16bit TIMERS
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- 3x2 CC-PWM
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- SSC
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- RTC
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- WDT
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- Up to 32MHz operation
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• 32.768 kHz crystal
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• 32 MHz crystal
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• LCD custom display
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• DEBUG connector with ARM 2x10 pin layout for programming/debugging
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with ARM-JTAG-EW
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• UEXT connector
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• EXT extension connector
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• RS232 connector and driver
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• Power jack
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• Lithium coin battery holder
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• RESET circuit , RESET button
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• Four user buttons
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• Buzzer
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• On-board voltage regulator 3.3V with up to 800mA current
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• Power supply filtering capacitor
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• Extension headers for some of the uC ports + RST and power supply
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LEDs
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====
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The EFM32G880F128-STK has no user controllable LEDs.
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Serial Console
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==============
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Pin Availability
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----------------
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The EFM32G890F128 support the following options for serial output. NOTE
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(1) that not all of these pins are available for use as a serial console,
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however. And (2) not all pins made available by the board.
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EFM32 PIN GPIO NOTES/CONFLICTS/AVAILABILITY
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------- -- ---- ----------------------------------------------
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US0_RX #0 PE11 SEG7 (LCD)
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US0_RX #1 PE6 COM2 (LCD)
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US0_RX #2 PC10 **AVAILABLE at EXT-12**
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US0_TX #0 PE10 SEG6 (LCD)
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US0_TX #1 PE7 COM3 (LCD)
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US0_TX #2 PC11 **AVAILABLE at EXT-13**
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------- -- ----
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US1_RX #0 PC1 **AVAILABLE at EXT-5**
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US1_RX #1 PD1 MISO1, Available at UEXT-7
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US1_TX #0 PC0 **AVAILABLE at EXT-4**
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US1_TX #1 PD0 MOSI1, Available at UEXT-8
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------- -- ----
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US2_RX #0 PC3 **AVAILABLE at EXT-7**
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US2_RX #1 PB4 SEG21 (LCD)
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US2_TX #0 PC2 **AVAILABLE at EXT-6**
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US2_TX #1 PB3 SEG20 (LCD)
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------- -- ----
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U0_RX #0 PF7 SEG25 (LCD)
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U0_RX #1 PE1 **AVAILABLE at EXT-19**
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U0_RX #2 PA4 SEG18 (LCD)
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U0_RX #3 PC15 DBG_SWV
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U0_TX #0 PF6 SEG24 (LCD)
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U0_TX #1 PE0 **AVAILABLE at EXT-18**
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U0_TX #2 PA3 SEG17 (LCD)
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U0_TX #3 PC14 **AVAILABLE at EXT-16**
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------- -- ----
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LEU0_RX #0 PD5 LEU0_RX, Available at UEXT-4
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LEU0_RX #1 PB14 HFXTAL_N
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LEU0_RX #2 PE15 SEG11 (LCD)
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LEU0_TX #0 PD4 LEU0_TX, Available at UEXT-3
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LEU0_TX #1 PB13 HFXTAL_P
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LEU0_TX #2 PE14 SEG10 (LCD)
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------- -- ----
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LEU1_RX #0 PC7 LEU1_RX to DB-9 connector
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LEU1_RX #1 PA6 SEG19 (LCD)
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LEU1_TX #0 PC6 LEU1_TX to DB-9 connector
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LEU1_TX #1 PA5 SEG18 (LCD)
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------- -- ----
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RS-232 Driver/DB-9 Connector
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----------------------------
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LEUART1 is available on through an RS232 driver on DB-9 connector.
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Unfortunately, there is no LEUART serial driver available in NuttX as of
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this writing.
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Default Serial Console
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----------------------
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UART0 is configured as the default serial console at 115200 8N1
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on pins PE0 and PE1.
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Configurations
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==============
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Each EFM32G880F128-STK configuration is maintained in a sub-director
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and can be selected as follow:
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cd tools
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./configure.sh olimex-efm32g880f128-stk/<subdir>
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cd -
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. ./setenv.sh
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If this is a Windows native build, then configure.bat should be used
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instead of configure.sh:
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configure.bat olimex-efm32g880f128-stk\<subdir>
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Where <subdir> is one of the following:
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nsh:
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---
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Configures the NuttShell (nsh) located at apps/examples/nsh. The
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Configuration enables the serial interfaces on UART0. Support for
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builtin applications is enabled, but in the base configuration no
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builtin applications are selected (see NOTES below).
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NOTES:
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1. This configuration uses the mconf-based configuration tool. To
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change this configuration using that tool, you should:
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a. Build and install the kconfig-mconf tool. See nuttx/README.txt
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and misc/tools/
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b. Execute 'make menuconfig' in nuttx/ in order to start the
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reconfiguration process.
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2. By default, this configuration uses the CodeSourcery toolchain
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for Windows and builds under Cygwin (or probably MSYS). That
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can easily be reconfigured, of course.
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CONFIG_HOST_WINDOWS=y : Builds under Windows
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CONFIG_WINDOWS_CYGWIN=y : Using Cygwin
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CONFIG_ARMV7M_TOOLCHAIN_CODESOURCERYW=y : CodeSourcery for Windows
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