/**************************************************************************** * boards/arm/efm32/efm32-g8xx-stk/include/board.h * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ #ifndef __BOARDS_ARM_EFM32_EFM32_G8XX_STK_INCLUDE_BOARD_H #define __BOARDS_ARM_EFM32_EFM32_G8XX_STK_INCLUDE_BOARD_H /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include "hardware/efm32_cmu.h" #include "hardware/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 32000000 /* 32MHz 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. */ #define BOARD_LFACLKSEL _CMU_LFCLKSEL_LFA_LFXO #undef BOARD_LFACLK_ULFRCO #define BOARD_LFACLK_FREQUENCY BOARD_LFXO_FREQUENCY /* 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 Gecko Starter Kit supports 4 yellow LEDs. One side is grounded * so these LEDs are illuminated by outputting a high value. * * If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs in * any way. The following definitions are used to access individual LEDs. */ /* LED index values for use with board_userled() */ #define BOARD_LED0 0 #define BOARD_LED1 1 #define BOARD_LED2 2 #define BOARD_LED3 3 #define BOARD_NLEDS 4 /* LED bits for use with board_userled_all() */ #define BOARD_LED0_BIT (1 << BOARD_LED0) #define BOARD_LED1_BIT (1 << BOARD_LED1) #define BOARD_LED2_BIT (1 << BOARD_LED2) #define BOARD_LED3_BIT (1 << BOARD_LED3) /* If CONFIG_ARCH_LEDs is defined, then NuttX will control the 4 LEDs on * board the EFM32 Gecko Starter Kit. The following definitions describe * how NuttX controls the LEDs in this configuration: */ #define LED_STARTED 0 /* LED0 */ #define LED_HEAPALLOCATE 1 /* LED1 */ #define LED_IRQSENABLED 2 /* LED0 + LED1 */ #define LED_STACKCREATED 3 /* LED2 */ #define LED_INIRQ 4 /* LED0 + LED2 */ #define LED_SIGNAL 5 /* LED1 + LED3 */ #define LED_ASSERTION 6 /* LED0 + LED2 + LED2 */ #define LED_PANIC 7 /* N/C + N/C + N/C + LED3 */ /* Pin routing **************************************************************/ /* UART0: * * U0_RX #1 PE1 **AVAILABLE at TP130** * U0_TX #1 PE0 **AVAILABLE at TP129** */ #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_RX #0 PD5 **AVAILABLE at TP123 and EXP port pin 14** * LEU0_TX #0 PD4 **AVAILABLE at TP122 and EXP port pin 12** */ #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 ****************************************************************************/ #endif /* __BOARDS_ARM_EFM32_EFM32_G8XX_STK_INCLUDE_BOARD_H */