patacongo commented on a change in pull request #1728: URL: https://github.com/apache/incubator-nuttx/pull/1728#discussion_r489475071
########## File path: boards/arm/sama5/giant-board/include/board.h ########## @@ -0,0 +1,195 @@ +/**************************************************************************** + * boards/arm/sama5/giant-board/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_SAMA5_GIANT_BOARD_INCLUDE_BOARD_H +#define __BOARDS_ARM_SAMA5_GIANT_BOARD_INCLUDE_BOARD_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#ifndef __ASSEMBLY__ +# include <stdbool.h> +# include <nuttx/irq.h> +#endif + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/* Clocking *****************************************************************/ + +/* After power-on reset, the SAMA5 device is running on a 12MHz internal RC. + * These definitions will configure operational clocking. + */ + +/* On-board crystal frequencies */ + +#define BOARD_MAINOSC_FREQUENCY (24000000) /* MAINOSC: 12MHz crystal on-board */ +#define BOARD_SLOWCLK_FREQUENCY (32768) /* Slow Clock: 32.768KHz */ + +#if defined(CONFIG_SAMA5_BOOT_SDRAM) +/* When booting from SDRAM, NuttX is loaded in SDRAM by an intermediate + * bootloader. + * That bootloader had to have already configured the PLL and SDRAM for + * proper operation. + * + * In this case, we do not reconfigure the clocking. + * Rather, we need to query the register settings to determine the clock + * frequencies. + * We can only assume that the Main clock source is the on-board 24MHz + * crystal. + */ + +# include <arch/board/board_sdram.h> + +#elif defined(CONFIG_GIANT_BOARD_492MHZ) + +/* This configuration results in a CPU clock of 492MHz. + * + * In this configuration, UPLL is the source of the UHPHS clock (if enabled). + */ + +# include <arch/board/board_492mhz.h> + +#endif + +/* LED definitions **********************************************************/ + +/* There is a status LED on board the Giant Board. + * + * ------------------------------ ------------------- --------------------- + * SAMA5D27 PIO SIGNAL USAGE + * ------------------------------ ------------------- --------------------- + * PA6 STATUS_LED Orange LED + * ------------------------------ ------------------- --------------------- + */ + +/* LED index values for use with board_userled() */ + +#define BOARD_ORANGE 0 +#define BOARD_NLEDS 1 + +/* LED bits for use with board_userled_all() */ + +#define BOARD_ORANGE_BIT (1 << BOARD_ORANGE) + +/* 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/sam_leds.c. The LEDs are used to encode OS-related + * events as follows. Note that only the GREEN LED is used in this case + * + * SYMBOL Val Meaning Green LED + * ----------------- --- ----------------------- ----------- + */ + +#define LED_STARTED 0 /* NuttX has been started OFF */ +#define LED_HEAPALLOCATE 0 /* Heap has been allocated OFF */ +#define LED_IRQSENABLED 0 /* Interrupts enabled OFF */ +#define LED_STACKCREATED 1 /* Idle stack created ON */ +#define LED_INIRQ 2 /* In an interrupt N/C */ +#define LED_SIGNAL 2 /* In a signal handler N/C */ +#define LED_ASSERTION 2 /* An assertion failed N/C */ +#define LED_PANIC 3 /* The system has crashed Flash */ +#undef LED_IDLE /* MCU is is sleep mode Not used */ + +/* Thus if the Orange LED is statically on, NuttX has successfully booted + * and is, apparently, running normally. + * If LED is flashing at approximately 2Hz, then a fatal error has been + * detected and the system has halted. + */ + +/* Pin disambiguation *******************************************************/ + +/* Alternative pin selections are provided with a numeric suffix like _1, _2, + * etc. Drivers, however, will use the pin selection without the numeric + * suffix. + * Additional definitions are required in this board.h file. + * For example, if we wanted the PCK0on PB26, then the following definition + * should appear in the board.h header file for that board: + * + * #define PIO_PMC_PCK0 PIO_PMC_PCK0_1 + * + * The PCK logic will then automatically configure PB26 as the PCK0 pin. + */ + +/* UART1. There is a TTL serial connection available on + * pins RX and TX. This is be driven by UART1. + * + * ---- ------------------------ ------------- + * J1/2 SCHEMATIC SAMA5D2 + * PIN NAME(s) PIO FUNCTION + * ---- ------------------------ ------------- + * 14 UART1_RX PD3 UTXD1 + * 15 UART1_TX PD2 URXD1 + * ---- ------------------------ ------------- + */ + +#define PIO_UART1_RXD PIO_UART1_RXD_1 +#define PIO_UART1_TXD PIO_UART1_TXD_1 + +/* FLEXCOM4 is available as a UART. + * + * ----- ------- ------------- + * J1/2 BOARD SAMA5D2 + * PIN NAME PIO FUNCTION + * ----- ------- ------------- + * 6 AD2 PD21 FLEXCOM4 + * 9 AD3 PD22 FLEXCOM4 + * ----- ------- ------------- + */ + +#define PIO_FLEXCOM4_IO0 PIO_FLEXCOM4_IO0_2 +#define PIO_FLEXCOM4_IO1 PIO_FLEXCOM4_IO1_2 + +/* PIO pins */ + +#define PIO_TX IO_ + +/* SDIO - Used for both Port 0 & 1 ******************************************/ + +/* 386 KHz for initial inquiry stuff */ + +#define BOARD_SDMMC_IDMODE_PRESCALER SDMMC_SYSCTL_SDCLKFS_DIV256 +#define BOARD_SDMMC_IDMODE_DIVISOR SDMMC_SYSCTL_DVS_DIV(2) + +/* 24.8MHz for other modes */ + +#define BOARD_SDMMC_MMCMODE_PRESCALER SDMMC_SYSCTL_SDCLKFS_DIV8 +#define BOARD_SDMMC_MMCMODE_DIVISOR SDMMC_SYSCTL_DVS_DIV(1) + +#define BOARD_SDMMC_SD1MODE_PRESCALER SDMMC_SYSCTL_SDCLKFS_DIV8 +#define BOARD_SDMMC_SD1MODE_DIVISOR SDMMC_SYSCTL_DVS_DIV(1) + +#define BOARD_SDMMC_SD4MODE_PRESCALER SDMMC_SYSCTL_SDCLKFS_DIV8 +#define BOARD_SDMMC_SD4MODE_DIVISOR SDMMC_SYSCTL_DVS_DIV(1) + Review comment: SDIO is STM32 terminology for HSMCI/SDMMC. These should be removed since SDMMC is not supported by the Giant Board. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
