More EFM32 files and logic
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Gregory Nutt
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@ -14,3 +14,73 @@ README
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• Reset button and a switch to disconnect the battery.
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• On-board SEGGER J-Link USB emulator
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• ARM 20 pin JTAG/SWD standard Debug in/out connector
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LEDs
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====
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The EFM32 Gecko Start Kithas four yellow LEDs. These LEDs are not used by
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the board port unless CONFIG_ARCH_LEDS is defined. In that case, the
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usage by the board port is defined in include/board.h and src/efm32_autoleds.c.
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The LEDs are used to encode OS-related events as follows:
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SYMBOL Meaning LED1* LED2 LED3 LED4
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----------------- ----------------------- ------ ----- ----- ------
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LED_STARTED NuttX has been started ON OFF OFF OFF
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LED_HEAPALLOCATE Heap has been allocated OFF ON OFF OFF
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LED_IRQSENABLED Interrupts enabled ON ON OFF OFF
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LED_STACKCREATED Idle stack created OFF OFF ON OFF
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LED_INIRQ In an interrupt** ON N/C N/C OFF
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LED_SIGNAL In a signal handler*** N/C ON N/C OFF
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LED_ASSERTION An assertion failed ON ON N/C OFF
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LED_PANIC The system has crashed N/C N/C N/C ON
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LED_IDLE STM32 is is sleep mode (Optional, not used)
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* If LED1, LED2, LED3 are statically on, then NuttX probably failed to boot
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and these LEDs will give you some indication of where the failure was
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** The normal state is LED3 ON and LED1 faintly glowing. This faint glow
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is because of timer interrupt that result in the LED being illuminated
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on a small proportion of the time.
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*** LED2 may also flicker normally if signals are processed.
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Configurations
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==============
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Each EFM32 Gecko Starter Kit 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 efm32-g8xx-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 STM32F4Discovery\<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 USARTx. 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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@ -40,8 +40,72 @@
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdbool.h>
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/* The EFM32 Gecko Starter Kit supports 4 yellow LEDs. One side is grounded
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* so these LEDs are illuminated by outputting a high value.
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*
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* If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs in
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* any way. The following definitions are used to access individual LEDs.
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*/
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/* LED index values for use with efm32_setled() */
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#define BOARD_LED1 0
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#define BOARD_LED2 1
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#define BOARD_LED3 2
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#define BOARD_LED4 3
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#define BOARD_NLEDS 4
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#define BOARD_LED_GREEN BOARD_LED1
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#define BOARD_LED_ORANGE BOARD_LED2
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#define BOARD_LED_RED BOARD_LED3
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#define BOARD_LED_BLUE BOARD_LED4
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/* LED bits for use with efm32_setleds() */
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#define BOARD_LED1_BIT (1 << BOARD_LED1)
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#define BOARD_LED2_BIT (1 << BOARD_LED2)
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#define BOARD_LED3_BIT (1 << BOARD_LED3)
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#define BOARD_LED4_BIT (1 << BOARD_LED4)
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/* If CONFIG_ARCH_LEDs is defined, then NuttX will control the 4 LEDs on
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* board the EFM32 Gecko Starter Kit. The following definitions describe
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* how NuttX controls the LEDs in this configuration:
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*/
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#define LED_STARTED 0 /* LED1 */
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#define LED_HEAPALLOCATE 1 /* LED2 */
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#define LED_IRQSENABLED 2 /* LED1 + LED2 */
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#define LED_STACKCREATED 3 /* LED3 */
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#define LED_INIRQ 4 /* LED1 + LED3 */
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#define LED_SIGNAL 5 /* LED2 + LED3 */
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#define LED_ASSERTION 6 /* LED1 + LED2 + LED3 */
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#define LED_PANIC 7 /* N/C + N/C + N/C + LED4 */
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: efm32_ledinit, efm32_setled, and efm32_setleds
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*
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* Description:
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* If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
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* LEDs. If CONFIG_ARCH_LEDS is not defined, then the following interfaces
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* are available to control the LEDs from user applications.
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*
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****************************************************************************/
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#ifndef CONFIG_ARCH_LEDS
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void efm32_ledinit(void);
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void efm32_setled(int led, bool ledon);
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void efm32_setleds(uint8_t ledset);
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#endif
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#endif /* __CONFIGS_EFM32_DK3650_INCLUDE_BOARD_H */
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@ -1,8 +1,8 @@
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/*****************************************************************************
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* configs/efm32-dk3650/src/efm32_boot.c
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* configs/efm32-g8xx-stk/src/efm32_boot.c
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*
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* Copyright (C) 2014 Richard Cochran. All rights reserved.
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* Author: Richard Cochran <richardcochran@gmail.com>
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* Copyright (C) 2014 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -39,21 +39,23 @@
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#include <nuttx/config.h>
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#include "efm32_start.h"
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#include "efm32-g8xx-stk.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/************************************************************************************
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/****************************************************************************
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* Name: efm32_boardinitialize
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*
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* Description:
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* All STM32 architectures must provide the following entry point. This entry point
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* is called early in the initialization -- after all memory has been configured
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* and mapped but before any devices have been initialized.
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* All EFM32 architectures must provide the following entry point. This
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* entry point is called early in the initialization before any devices
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* have been initialized.
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*
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************************************************************************************/
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****************************************************************************/
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void efm32_boardinitialize(void)
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{
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