diff options
Diffstat (limited to 'circuitpython/lib/tinyusb/hw/bsp/stm32l4/boards/stm32l476disco')
3 files changed, 332 insertions, 0 deletions
diff --git a/circuitpython/lib/tinyusb/hw/bsp/stm32l4/boards/stm32l476disco/STM32L476VGTx_FLASH.ld b/circuitpython/lib/tinyusb/hw/bsp/stm32l4/boards/stm32l476disco/STM32L476VGTx_FLASH.ld new file mode 100644 index 0000000..98f468a --- /dev/null +++ b/circuitpython/lib/tinyusb/hw/bsp/stm32l4/boards/stm32l476disco/STM32L476VGTx_FLASH.ld @@ -0,0 +1,183 @@ +/* +***************************************************************************** +** + +** File : LinkerScript.ld +** +** Abstract : Linker script for STM32L476VGTx Device with +** 1024KByte FLASH, 96KByte RAM +** +** Set heap size, stack size and stack location according +** to application requirements. +** +** Set memory bank area and size if external memory is used. +** +** Target : STMicroelectronics STM32 +** +** +** Distribution: The file is distributed as is, without any warranty +** of any kind. +** +** (c)Copyright Ac6. +** You may use this file as-is or modify it according to the needs of your +** project. Distribution of this file (unmodified or modified) is not +** permitted. Ac6 permit registered System Workbench for MCU users the +** rights to distribute the assembled, compiled & linked contents of this +** file as part of an application binary file, provided that it is built +** using the System Workbench for MCU toolchain. +** +***************************************************************************** +*/ + +/* Entry Point */ +ENTRY(Reset_Handler) + +/* Highest address of the user mode stack */ +_estack = 0x20018000; /* end of RAM */ +/* Generate a link error if heap and stack don't fit into RAM */ +_Min_Heap_Size = 0x500; /* required amount of heap */ +_Min_Stack_Size = 0x1000; /* required amount of stack */ + +/* Specify the memory areas */ +MEMORY +{ +FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 1024K +RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 96K +} + +/* Define output sections */ +SECTIONS +{ + /* The startup code goes first into FLASH */ + .isr_vector : + { + . = ALIGN(8); + KEEP(*(.isr_vector)) /* Startup code */ + . = ALIGN(8); + } >FLASH + + /* The program code and other data goes into FLASH */ + .text : + { + . = ALIGN(8); + *(.text) /* .text sections (code) */ + *(.text*) /* .text* sections (code) */ + *(.glue_7) /* glue arm to thumb code */ + *(.glue_7t) /* glue thumb to arm code */ + *(.eh_frame) + + KEEP (*(.init)) + KEEP (*(.fini)) + + . = ALIGN(8); + _etext = .; /* define a global symbols at end of code */ + } >FLASH + + /* Constant data goes into FLASH */ + .rodata : + { + . = ALIGN(8); + *(.rodata) /* .rodata sections (constants, strings, etc.) */ + *(.rodata*) /* .rodata* sections (constants, strings, etc.) */ + . = ALIGN(8); + } >FLASH + + .ARM.extab : + { + . = ALIGN(8); + *(.ARM.extab* .gnu.linkonce.armextab.*) + . = ALIGN(8); + } >FLASH + .ARM : { + . = ALIGN(8); + __exidx_start = .; + *(.ARM.exidx*) + __exidx_end = .; + . = ALIGN(8); + } >FLASH + + .preinit_array : + { + . = ALIGN(8); + PROVIDE_HIDDEN (__preinit_array_start = .); + KEEP (*(.preinit_array*)) + PROVIDE_HIDDEN (__preinit_array_end = .); + . = ALIGN(8); + } >FLASH + + .init_array : + { + . = ALIGN(8); + PROVIDE_HIDDEN (__init_array_start = .); + KEEP (*(SORT(.init_array.*))) + KEEP (*(.init_array*)) + PROVIDE_HIDDEN (__init_array_end = .); + . = ALIGN(8); + } >FLASH + .fini_array : + { + . = ALIGN(8); + PROVIDE_HIDDEN (__fini_array_start = .); + KEEP (*(SORT(.fini_array.*))) + KEEP (*(.fini_array*)) + PROVIDE_HIDDEN (__fini_array_end = .); + . = ALIGN(8); + } >FLASH + + /* used by the startup to initialize data */ + _sidata = LOADADDR(.data); + + /* Initialized data sections goes into RAM, load LMA copy after code */ + .data : + { + . = ALIGN(8); + _sdata = .; /* create a global symbol at data start */ + *(.data) /* .data sections */ + *(.data*) /* .data* sections */ + + . = ALIGN(8); + _edata = .; /* define a global symbol at data end */ + } >RAM AT> FLASH + + + /* Uninitialized data section */ + . = ALIGN(4); + .bss : + { + /* This is used by the startup in order to initialize the .bss secion */ + _sbss = .; /* define a global symbol at bss start */ + __bss_start__ = _sbss; + *(.bss) + *(.bss*) + *(COMMON) + + . = ALIGN(4); + _ebss = .; /* define a global symbol at bss end */ + __bss_end__ = _ebss; + } >RAM + + /* User_heap_stack section, used to check that there is enough RAM left */ + ._user_heap_stack : + { + . = ALIGN(8); + PROVIDE ( end = . ); + PROVIDE ( _end = . ); + . = . + _Min_Heap_Size; + . = . + _Min_Stack_Size; + . = ALIGN(8); + } >RAM + + + + /* Remove information from the standard libraries */ + /DISCARD/ : + { + libc.a ( * ) + libm.a ( * ) + libgcc.a ( * ) + } + + .ARM.attributes 0 : { *(.ARM.attributes) } +} + + diff --git a/circuitpython/lib/tinyusb/hw/bsp/stm32l4/boards/stm32l476disco/board.h b/circuitpython/lib/tinyusb/hw/bsp/stm32l4/boards/stm32l476disco/board.h new file mode 100644 index 0000000..42c657d --- /dev/null +++ b/circuitpython/lib/tinyusb/hw/bsp/stm32l4/boards/stm32l476disco/board.h @@ -0,0 +1,139 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2020, Ha Thach (tinyusb.org) + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * This file is part of the TinyUSB stack. + */ + +#ifndef BOARD_H_ +#define BOARD_H_ + +#ifdef __cplusplus + extern "C" { +#endif + +#define LED_PORT GPIOB +#define LED_PIN GPIO_PIN_2 +#define LED_STATE_ON 1 + +#define BUTTON_PORT GPIOA +#define BUTTON_PIN GPIO_PIN_0 +#define BUTTON_STATE_ACTIVE 1 + +#define UART_DEV USART2 +#define UART_CLK_EN __HAL_RCC_USART2_CLK_ENABLE +#define UART_GPIO_PORT GPIOD +#define UART_GPIO_AF GPIO_AF7_USART2 +#define UART_TX_PIN GPIO_PIN_5 +#define UART_RX_PIN GPIO_PIN_6 + +//--------------------------------------------------------------------+ +// RCC Clock +//--------------------------------------------------------------------+ + +/** + * @brief System Clock Configuration + * The system Clock is configured as follow : + * + * If define USB_USE_LSE_MSI_CLOCK enabled: + * System Clock source = PLL (MSI) + * SYSCLK(Hz) = 80000000 + * HCLK(Hz) = 80000000 + * AHB Prescaler = 1 + * APB1 Prescaler = 1 + * APB2 Prescaler = 2 + * MSI Frequency(Hz) = 4800000 + * LSE Frequency(Hz) = 32768 + * PLL_M = 6 + * PLL_N = 40 + * PLL_P = 7 + * PLL_Q = 4 + * PLL_R = 4 + * Flash Latency(WS) = 4 + * @param None + * @retval None + */ +static inline void board_clock_init(void) +{ + RCC_ClkInitTypeDef RCC_ClkInitStruct; + RCC_OscInitTypeDef RCC_OscInitStruct; + RCC_PeriphCLKInitTypeDef PeriphClkInitStruct; + + /* Enable the LSE Oscillator */ + RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE; + RCC_OscInitStruct.LSEState = RCC_LSE_ON; + RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; + HAL_RCC_OscConfig(&RCC_OscInitStruct); + + /* Enable the CSS interrupt in case LSE signal is corrupted or not present */ + HAL_RCCEx_DisableLSECSS(); + + /* Set tick interrupt priority, default HAL value is intentionally invalid + and that prevents PLL initialization in HAL_RCC_OscConfig() */ + HAL_InitTick((1UL << __NVIC_PRIO_BITS) - 1UL); + + /* Enable MSI Oscillator and activate PLL with MSI as source */ + RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI; + RCC_OscInitStruct.MSIState = RCC_MSI_ON; + RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT; + RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_11; + RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; + RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI; + RCC_OscInitStruct.PLL.PLLM = 6; + RCC_OscInitStruct.PLL.PLLN = 40; + RCC_OscInitStruct.PLL.PLLP = 7; + RCC_OscInitStruct.PLL.PLLQ = 4; + RCC_OscInitStruct.PLL.PLLR = 4; + HAL_RCC_OscConfig(&RCC_OscInitStruct); + + /* Enable MSI Auto-calibration through LSE */ + HAL_RCCEx_EnableMSIPLLMode(); + + /* Select MSI output as USB clock source */ + PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USB; + PeriphClkInitStruct.UsbClockSelection = RCC_USBCLKSOURCE_MSI; + HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct); + + /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 + clocks dividers */ + RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2); + RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; + RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; + RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; + RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; + HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4); +} + +static inline void board_vbus_sense_init(void) +{ + // L476Disco use general GPIO PC11 for VBUS sensing instead of dedicated PA9 as others + // Disable VBUS Sense and force device mode + USB_OTG_FS->GCCFG &= ~USB_OTG_GCCFG_VBDEN; + + USB_OTG_FS->GOTGCTL |= USB_OTG_GOTGCTL_BVALOEN | USB_OTG_GOTGCTL_BVALOVAL; +} + +#ifdef __cplusplus + } +#endif + +#endif /* BOARD_H_ */ diff --git a/circuitpython/lib/tinyusb/hw/bsp/stm32l4/boards/stm32l476disco/board.mk b/circuitpython/lib/tinyusb/hw/bsp/stm32l4/boards/stm32l476disco/board.mk new file mode 100644 index 0000000..e7b8557 --- /dev/null +++ b/circuitpython/lib/tinyusb/hw/bsp/stm32l4/boards/stm32l476disco/board.mk @@ -0,0 +1,10 @@ +CFLAGS += \ + -DSTM32L476xx \ + +# All source paths should be relative to the top level. +LD_FILE = $(BOARD_PATH)/STM32L476VGTx_FLASH.ld + +SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32l476xx.s + +# For flash-jlink target +JLINK_DEVICE = stm32l476vg |