/************************************************************************************ * configs/stm32f746g-disco/include/board.h * * Copyright (C) 2015 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 __CONFIG_STM32F746G_DISCO_INCLUDE_BOARD_H #define __CONFIG_STM32F746G_DISCO_INCLUDE_BOARD_H /************************************************************************************ * Included Files ************************************************************************************/ #include #ifndef __ASSEMBLY__ # include #endif #include "stm32_rcc.h" #ifdef CONFIG_STM32F7_SDMMC1 # include "stm32_sdmmc.h" #endif /************************************************************************************ * Pre-processor Definitions ************************************************************************************/ /* Clocking *************************************************************************/ /* The STM32F7 Discovery board provides the following clock sources: * * X1: 24 MHz oscillator for USB OTG HS PHY and camera module (daughter board) * X2: 25 MHz oscillator for STM32F746NGH6 microcontroller and Ethernet PHY. * X3: 32.768 KHz crystal for STM32F746NGH6 embedded RTC * * So we have these clock source available within the STM32 * * HSI: 16 MHz RC factory-trimmed * LSI: 32 KHz RC * HSE: On-board crystal frequency is 25MHz * LSE: 32.768 kHz */ #define STM32_BOARD_XTAL 25000000ul #define STM32_HSI_FREQUENCY 16000000ul #define STM32_LSI_FREQUENCY 32000 #define STM32_HSE_FREQUENCY STM32_BOARD_XTAL #define STM32_LSE_FREQUENCY 32768 /* Main PLL Configuration. * * PLL source is HSE = 25,000,000 * * PLL_VCO = (STM32_HSE_FREQUENCY / PLLM) * PLLN * Subject to: * * 2 <= PLLM <= 63 * 192 <= PLLN <= 432 * 192 MHz <= PLL_VCO <= 432MHz * * SYSCLK = PLL_VCO / PLLP * Subject to * * PLLP = {2, 4, 6, 8} * SYSCLK <= 216 MHz * * USB OTG FS, SDMMC and RNG Clock = PLL_VCO / PLLQ * Subject to * The USB OTG FS requires a 48 MHz clock to work correctly. The SDMMC * and the random number generator need a frequency lower than or equal * to 48 MHz to work correctly. * * 2 <= PLLQ <= 15 */ #if defined(CONFIG_STM32F7_USBOTHFS) /* Highest SYSCLK with USB OTG FS clock = 48 MHz * * PLL_VCO = (25,000,000 / 25) * 384 = 384 MHz * SYSCLK = 384 MHz / 2 = 192 MHz * USB OTG FS, SDMMC and RNG Clock = 384 MHz / 8 = 48MHz */ #define STM32_PLLCFG_PLLM RCC_PLLCFG_PLLM(25) #define STM32_PLLCFG_PLLN RCC_PLLCFG_PLLN(384) #define STM32_PLLCFG_PLLP RCC_PLLCFG_PLLP_2 #define STM32_PLLCFG_PLLQ RCC_PLLCFG_PLLQ(8) #define STM32_VCO_FREQUENCY ((STM32_HSE_FREQUENCY / 25) * 384) #define STM32_SYSCLK_FREQUENCY (STM32_VCO_FREQUENCY / 2) #define STM32_OTGFS_FREQUENCY (STM32_VCO_FREQUENCY / 8) #elif defined(CONFIG_STM32F7_SDMMC1) || defined(CONFIG_STM32F7_RNG) /* Highest SYSCLK with USB OTG FS clock <= 48MHz * * PLL_VCO = (25,000,000 / 25) * 432 = 432 MHz * SYSCLK = 432 MHz / 2 = 216 MHz * USB OTG FS, SDMMC and RNG Clock = 432 MHz / 10 = 43.2 MHz */ #define STM32_PLLCFG_PLLM RCC_PLLCFG_PLLM(25) #define STM32_PLLCFG_PLLN RCC_PLLCFG_PLLN(432) #define STM32_PLLCFG_PLLP RCC_PLLCFG_PLLP_2 #define STM32_PLLCFG_PLLQ RCC_PLLCFG_PLLQ(10) #define STM32_VCO_FREQUENCY ((STM32_HSE_FREQUENCY / 25) * 432) #define STM32_SYSCLK_FREQUENCY (STM32_VCO_FREQUENCY / 2) #define STM32_OTGFS_FREQUENCY (STM32_VCO_FREQUENCY / 10) #else /* Highest SYSCLK * * PLL_VCO = (25,000,000 / 25) * 432 = 432 MHz * SYSCLK = 432 MHz / 2 = 216 MHz */ #define STM32_PLLCFG_PLLM RCC_PLLCFG_PLLM(25) #define STM32_PLLCFG_PLLN RCC_PLLCFG_PLLN(432) #define STM32_PLLCFG_PLLP RCC_PLLCFG_PLLP_2 #define STM32_PLLCFG_PLLQ RCC_PLLCFG_PLLQ(10) #define STM32_VCO_FREQUENCY ((STM32_HSE_FREQUENCY / 25) * 432) #define STM32_SYSCLK_FREQUENCY (STM32_VCO_FREQUENCY / 2) #define STM32_OTGFS_FREQUENCY (STM32_VCO_FREQUENCY / 10) #endif /* Several prescalers allow the configuration of the two AHB buses, the * high-speed APB (APB2) and the low-speed APB (APB1) domains. The maximum * frequency of the two AHB buses is 216 MHz while the maximum frequency of * the high-speed APB domains is 108 MHz. The maximum allowed frequency of * the low-speed APB domain is 54 MHz. */ /* AHB clock (HCLK) is SYSCLK (216 MHz) */ #define STM32_RCC_CFGR_HPRE RCC_CFGR_HPRE_SYSCLK /* HCLK = SYSCLK / 1 */ #define STM32_HCLK_FREQUENCY STM32_SYSCLK_FREQUENCY #define STM32_BOARD_HCLK STM32_HCLK_FREQUENCY /* same as above, to satisfy compiler */ /* APB1 clock (PCLK1) is HCLK/4 (54 MHz) */ #define STM32_RCC_CFGR_PPRE1 RCC_CFGR_PPRE1_HCLKd4 /* PCLK1 = HCLK / 4 */ #define STM32_PCLK1_FREQUENCY (STM32_HCLK_FREQUENCY/4) /* Timers driven from APB1 will be twice PCLK1 */ #define STM32_APB1_TIM2_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM3_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM4_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM5_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM6_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM7_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM12_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM13_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM14_CLKIN (2*STM32_PCLK1_FREQUENCY) /* APB2 clock (PCLK2) is HCLK/2 (108MHz) */ #define STM32_RCC_CFGR_PPRE2 RCC_CFGR_PPRE2_HCLKd2 /* PCLK2 = HCLK / 2 */ #define STM32_PCLK2_FREQUENCY (STM32_HCLK_FREQUENCY/2) /* Timers driven from APB2 will be twice PCLK2 */ #define STM32_APB2_TIM1_CLKIN (2*STM32_PCLK2_FREQUENCY) #define STM32_APB2_TIM8_CLKIN (2*STM32_PCLK2_FREQUENCY) #define STM32_APB2_TIM9_CLKIN (2*STM32_PCLK2_FREQUENCY) #define STM32_APB2_TIM10_CLKIN (2*STM32_PCLK2_FREQUENCY) #define STM32_APB2_TIM11_CLKIN (2*STM32_PCLK2_FREQUENCY) /* FLASH wait states * * --------- ---------- ----------- * VDD MAX SYSCLK WAIT STATES * --------- ---------- ----------- * 1.7-2.1 V 180 MHz 8 * 2.1-2.4 V 216 MHz 9 * 2.4-2.7 V 216 MHz 8 * 2.7-3.6 V 216 MHz 7 * --------- ---------- ----------- */ #define BOARD_FLASH_WAITSTATES 7 /* LED definitions ******************************************************************/ /* The STM32F746G-DISCO board has numerous LEDs but only one, LD1 located near the * reset button, that can be controlled by software (LD2 is a power indicator, LD3-6 * indicate USB status, LD7 is controlled by the ST-Link). * * LD1 is controlled by PI1 which is also the SPI2_SCK at the Arduino interface. * One end of LD1 is grounded so a high output on PI1 will illuminate the LED. * * 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 stm32_setled() */ #define BOARD_LED1 0 #define BOARD_NLEDS 1 #define BOARD_LD1 BOARD_LED1 /* LED bits for use with stm32_setleds() */ #define BOARD_LED1_BIT (1 << BOARD_LED1) /* If CONFIG_ARCH_LEDS is defined, the usage by the board port is defined in * include/board.h and src/stm32_leds.c. The LEDs are used to encode OS-related * events as follows: * * SYMBOL Meaning LD1 * ------------------- ----------------------- ------ * LED_STARTED NuttX has been started OFF * LED_HEAPALLOCATE Heap has been allocated OFF * LED_IRQSENABLED Interrupts enabled OFF * LED_STACKCREATED Idle stack created ON * LED_INIRQ In an interrupt N/C * LED_SIGNAL In a signal handler N/C * LED_ASSERTION An assertion failed N/C * LED_PANIC The system has crashed FLASH * * Thus is LD1 is statically on, NuttX has successfully booted and is, * apparently, running normally. If LD1 is flashing at approximately * 2Hz, then a fatal error has been detected and the system has halted. */ #define LED_STARTED 0 /* LD1=OFF */ #define LED_HEAPALLOCATE 0 /* LD1=OFF */ #define LED_IRQSENABLED 0 /* LD1=OFF */ #define LED_STACKCREATED 1 /* LD1=ON */ #define LED_INIRQ 2 /* LD1=no change */ #define LED_SIGNAL 2 /* LD1=no change */ #define LED_ASSERTION 2 /* LD1=no change */ #define LED_PANIC 3 /* LD1=flashing */ /* Button definitions ***************************************************************/ /* The STM32F7 Discovery supports one button: Pushbutton B1, labelled "User", is * connected to GPIO PI11. A high value will be sensed when the button is depressed. */ #define BUTTON_USER 0 #define NUM_BUTTONS 1 #define BUTTON_USER_BIT (1 << BUTTON_USER) /* Alternate function pin selections ************************************************/ /* USART6: * * These configurations assume that you are using a standard Arduio RS-232 shield * with the serial interface with RX on pin D0 and TX on pin D1: * * -------- --------------- * STM32F7 * ARDUIONO FUNCTION GPIO * -- ----- --------- ----- * DO RX USART6_RX PC7 * D1 TX USART6_TX PC6 * -- ----- --------- ----- */ #define GPIO_USART6_RX GPIO_USART6_RX_1 #define GPIO_USART6_TX GPIO_USART6_TX_1 /* The STM32 F7 connects to a SMSC LAN8742A PHY using these pins: * * STM32 F7 BOARD LAN8742A * GPIO SIGNAL PIN NAME * -------- ------------ ------------- * PG11 RMII_TX_EN TXEN * PG13 RMII_TXD0 TXD0 * PG14 RMII_TXD1 TXD1 * PC4 RMII_RXD0 RXD0/MODE0 * PC5 RMII_RXD1 RXD1/MODE1 * PG2 RMII_RXER RXER/PHYAD0 -- Not used * PA7 RMII_CRS_DV CRS_DV/MODE2 * PC1 RMII_MDC MDC * PA2 RMII_MDIO MDIO * N/A NRST nRST * PA1 RMII_REF_CLK nINT/REFCLK0 * N/A OSC_25M XTAL1/CLKIN * * The PHY address is either 0 or 1, depending on the state of PG2 on reset. * PG2 is not controlled but appears to result in a PHY address of 0. */ #define GPIO_ETH_RMII_TX_EN GPIO_ETH_RMII_TX_EN_2 #define GPIO_ETH_RMII_TXD0 GPIO_ETH_RMII_TXD0_2 #define GPIO_ETH_RMII_TXD1 GPIO_ETH_RMII_TXD1_2 /************************************************************************************ * Public Data ************************************************************************************/ #ifndef __ASSEMBLY__ #undef EXTERN #if defined(__cplusplus) #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif /************************************************************************************ * Public Function Prototypes ************************************************************************************/ /************************************************************************************ * Name: stm32_boardinitialize * * Description: * All STM32 architectures must provide the following entry point. This entry point * is called early in the initialization -- after all memory has been configured * and mapped but before any devices have been initialized. * ************************************************************************************/ void stm32_boardinitialize(void); /************************************************************************************ * Name: stm32_ledinit, stm32_setled, and stm32_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 stm32_ledinit(void); void stm32_setled(int led, bool ledon); void stm32_setleds(uint8_t ledset); #endif #undef EXTERN #if defined(__cplusplus) } #endif #endif /* __ASSEMBLY__ */ #endif /* __CONFIG_STM32F746G_DISCO_INCLUDE_BOARD_H */