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nuttx/configs/efm32gg-stk3700/include/board.h

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/****************************************************************************
* configs/efm32gg-stk3700/include/board.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __CONFIGS_EFM32GG_STK3700_INCLUDE_BOARD_H
#define __CONFIGS_EFM32GG_STK3700_INCLUDE_BOARD_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdbool.h>
#include "chip/efm32_cmu.h"
#include "chip/efm32_usart.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Clocking *****************************************************************/
/* Clock Sources
* - 1-28 MHz High Frequency RC Oscillator (HFRCO)
* - 4-32 MHz High Frequency Crystal Oscillator (HFXO)
* - 32.768 kHz Low Frequency RC Oscillator (LFRCO)
* - 32.768 kHz Low Frequency Crystal Oscillator (LFXO)
* - 1KHz Ultra Low Frequency RC Oscillator (ULFRCO)
*
* The device boots with 14 MHz HFRCO as the HFCLK source.
*/
#define BOARD_HAVE_HFXO 1 /* Have High frequency crystal oscillator */
#define BOARD_HAVE_LFXO 1 /* Have Loq frequency crystal oscillator */
#define BOARD_HFRCO_FREQUENCY 14000000 /* 14MHz on reset */
#define BOARD_HFXO_FREQUENCY 48000000 /* 48MHz crystal on board */
#define BOARD_LFRCO_FREQUENCY 32768 /* Low frequency oscillator */
#define BOARD_LFXO_FREQUENCY 32768 /* 32MHz crystal on board */
#define BOARD_ULFRCO_FREQUNCY 1000 /* Ultra low frequency oscillator */
/* HFCLK - High Frequency Clock
*
* HFCLK is the selected High Frequency Clock. This clock is used by the CMU
* and drives the two prescalers that generate HFCORECLK and HFPERCLK. The
* HFCLK can be driven by a high-frequency oscillator (HFRCO or HFXO) or one
* of the low-frequency oscillators (LFRCO or LFXO). By default the HFRCO is
* selected.
*/
#define BOARD_HFCLKSEL _CMU_CMD_HFCLKSEL_HFXO
#define BOARD_HFCLKDIV 0 /* Does not apply to EFM32G */
#define BOARD_HFCLK_FREQUENCY BOARD_HFXO_FREQUENCY
/* HFCORECLK - High Frequency Core Clock
*
* HFCORECLK is a prescaled version of HFCLK. This clock drives the Core
* Modules, which consists of the CPU and modules that are tightly coupled
* to the CPU, e.g. MSC, DMA etc. The frequency of HFCORECLK is set using
* the CMU_HFCORECLKDIV register.
*/
#define BOARD_HFCORECLKDIV _CMU_HFCORECLKDIV_HFCORECLKDIV_DEFAULT
#define BOARD_HFCORECLK_FREQUENCY BOARD_HFXO_FREQUENCY
/* HFPERCLK - High Frequency Peripheral Clock
*
* Like HFCORECLK, HFPERCLK can also be a prescaled version of HFCLK. This
* clock drives the High-Frequency Peripherals. The frequency of HFPERCLK is
* set using the CMU_HFPERCLKDIV register.
*/
#define BOARD_HFPERCLKDIV _CMU_HFPERCLKDIV_HFPERCLKDIV_DEFAULT
#define BOARD_HFPERCLK_FREQUENCY BOARD_HFXO_FREQUENCY
/* LFACLK - Low Frequency A Clock
*
* LFACLK is the selected clock for the Low Energy A Peripherals. There are
* four selectable sources for LFACLK: LFRCO, LFXO, HFCORECLK/2 and ULFRCO.
* From reset, the LFACLK source is set to LFRCO. However, note that the
* LFRCO is disabled from reset. The selection is configured using the LFA
* field in CMU_LFCLKSEL. The HFCORECLK/2 setting allows the Low Energy A
* Peripherals to be used as high-frequency peripherals.
*
* Use _CMU_LFCLKSEL_LFA_DISABLED to disable.
* ULFRCO is a special case.
*/
#if BOARD_HAVE_LFXO
# define BOARD_LFACLKSEL _CMU_LFCLKSEL_LFA_LFXO
# undef BOARD_LFACLK_ULFRCO
# define BOARD_LFACLK_FREQUENCY BOARD_LFXO_FREQUENCY
#else
# define BOARD_LFACLKSEL _CMU_LFCLKSEL_LFA_LFRCO
# undef BOARD_LFACLK_ULFRCO
# define BOARD_LFACLK_FREQUENCY BOARD_LFRCO_FREQUENCY
#endif
/* LFBCLK - Low Frequency B Clock
*
* LFBCLK is the selected clock for the Low Energy B Peripherals. There are
* four selectable sources for LFBCLK: LFRCO, LFXO, HFCORECLK/2 and ULFRCO.
* From reset, the LFBCLK source is set to LFRCO. However, note that the
* LFRCO is disabled from reset. The selection is configured using the LFB
* field in CMU_LFCLKSEL. The HFCORECLK/2 setting allows the Low Energy B
* Peripherals to be used as high-frequency peripherals.
*
* Use _CMU_LFCLKSEL_LFA_DISABLED to disable.
* ULFRCO is a special case.
*/
#define BOARD_LFBCLKSEL _CMU_LFCLKSEL_LFB_LFXO
#undef BOARD_LFBCLK_ULFRCO
#define BOARD_LFBCLK_FREQUENCY BOARD_LFXO_FREQUENCY
/* PCNTnCLK - Pulse Counter n Clock
*
* Each available pulse counter is driven by its own clock, PCNTnCLK where
* n is the pulse counter instance number. Each pulse counter can be
* configured to use an external pin (PCNTn_S0) or LFACLK as PCNTnCLK.
*/
/* WDOGCLK - Watchdog Timer Clock
*
* The Watchdog Timer (WDOG) can be configured to use one of three different
* clock sources: LFRCO, LFXO or ULFRCO. ULFRCO (Ultra Low Frequency RC
* Oscillator) is a separate 1 kHz RC oscillator that also runs in EM3.
*/
/* AUXCLK - Auxiliary Clock
*
* AUXCLK is a 1-28 MHz clock driven by a separate RC oscillator, AUXHFRCO.
* This clock is used for flash programming and Serial Wire Output (SWO).
* During flash programming this clock will be active. If the AUXHFRCO has
* not been enabled explicitly by software, the MSC will automatically
* start and stop it. The AUXHFRCO is enabled by writing a 1 to AUXHFRCOEN
* in CMU_OSCENCMD. This explicit enabling is required when SWO is used.
*/
/* LEDs *********************************************************************/
/* The EFM32 Giant Gecko Start Kit has two yellow LEDs marked LED0 and LED1.
* These LEDs are controlled by GPIO pins on the EFM32. The LEDs are
* connected to pins PE2 and PE3 in an active high configuration:
*
* ------------------------------------- --------------------
* EFM32 PIN BOARD SIGNALS
* ------------------------------------- --------------------
* E2/BCK_VOUT/EBI_A09 #0/ MCU_PE2 UIF_LED0
* TIM3_CC2 #1/U1_TX #3/ACMP0_O #1
* E3/BCK_STAT/EBI_A10 #0/U1_RX #3/ MCU_PE3 UIF_LED1
* ACMP1_O #1
* ------------------------------------- --------------------
*
* All LEDs are grounded and so are illuminated by outputting a high
* value to the LED.
*/
/* LED index values for use with efm32_setled() */
#define BOARD_LED0 0
#define BOARD_LED1 1
#define BOARD_NLEDS 2
/* LED bits for use with efm32_setleds() */
#define BOARD_LED0_BIT (1 << BOARD_LED0)
#define BOARD_LED1_BIT (1 << BOARD_LED1)
/* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
* defined. In that case, the usage by the board port is defined in
* include/board.h and src/efm32_autoleds.c. The LEDs are used to
* encode OS-related events as follows:
*
* SYMBOL Val Meaning LED state
* LED0 LED1
* ----------------- --- ----------------------- -------- -------- */
#define LED_STARTED 0 /* NuttX has been started OFF OFF */
#define LED_HEAPALLOCATE 0 /* Heap has been allocated OFF OFF */
#define LED_IRQSENABLED 0 /* Interrupts enabled OFF OFF */
#define LED_STACKCREATED 1 /* Idle stack created ON OFF */
#define LED_INIRQ 2 /* In an interrupt No change */
#define LED_SIGNAL 2 /* In a signal handler No change */
#define LED_ASSERTION 2 /* An assertion failed No change */
#define LED_PANIC 3 /* The system has crashed OFF Blinking */
#undef LED_IDLE /* MCU is is sleep mode Not used */
/* Buttons ******************************************************************/
/* The EFM32 Giant Gecko Start Kit has two buttons marked PB0 and PB1. They
* are connected to the EFM32, and are debounced by RC filters with a time
* constant of 1ms. The buttons are connected to pins PB9 and PB10:
*
* ------------------------------------- --------------------
* EFM32 PIN BOARD SIGNALS
* ------------------------------------- --------------------
* B9/EBI_A03/U1_TX #2 MCU_PB9 UIF_PB0
* B10/EBI_A04/U1_RX #2 MCU_PB10 UIF_PB1
* ------------------------------------- --------------------
*
* Buttons are connected to ground so they will read low when closed.
*/
#define BUTTON_PB0 0
#define BUTTON_PB1 1
#define NUM_BUTTONS 2
#define BUTTON_PB0_BIT (1 << BUTTON_PB0)
#define BUTTON_PB1_BIT (1 << BUTTON_PB1)
/* Pin routing **************************************************************/
/* UART0:
*
* The kit contains a board controller that is responsible for performing
* various board level tasks, such as handling the debugger and the Advanced
* Energy Monitor. An interface is provided between the EFM32 and the board
* controller in the form of a UART connection. The connection is enabled by
* setting the EFM_BC_EN (PF7) line high, and using the lines EFM_BC_TX
* (PE0) and EFM_BC_RX (PE1) for communicating.
*
* U0_TX #1 PE0 MCU_PE0, UART0_TX #0, EFM_BC_RX, BC_UART_RX
* U0_RX #1 PE1 MCU_PE1, UART0_TX #1, EFM_BC_TX, BC_UART_TX
*/
#define BOARD_UART0_RX_GPIO (GPIO_PORTE|GPIO_PIN1)
#define BOARD_UART0_TX_GPIO (GPIO_PORTE|GPIO_PIN0)
#define BOARD_UART0_ROUTE_LOCATION _USART_ROUTE_LOCATION_LOC1
/* LEUART0:
*
* LEU0_TX #0 PD4 Available on TP122 and EXP pin 12
* LEU0_RX #0 PD5 Available on TP123 and EXP pin 14
*/
#define BOARD_LEUART0_RX_GPIO (GPIO_PORTD|GPIO_PIN5)
#define BOARD_LEUART0_TX_GPIO (GPIO_PORTD|GPIO_PIN4)
#define BOARD_LEUART0_ROUTE_LOCATION _LEUART_ROUTE_LOCATION_LOC0
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: efm32_ledinit, efm32_setled, and efm32_setleds
*
* Description:
* If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
* LEDs. If CONFIG_ARCH_LEDS is not defined, then the following interfaces
* are available to control the LEDs from user applications.
*
****************************************************************************/
#ifndef CONFIG_ARCH_LEDS
void efm32_ledinit(void);
void efm32_setled(int led, bool ledon);
void efm32_setleds(uint8_t ledset);
#endif
#endif /* __CONFIGS_EFM32GG_STK3700_INCLUDE_BOARD_H */
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