diff --git a/Makefile b/Makefile index 83332e94..6c060bf0 100644 --- a/Makefile +++ b/Makefile @@ -32,7 +32,7 @@ SHAREDIR = $(DESTDIR)/$(PREFIX)/share/libopencm3/scripts INSTALL = install SRCLIBDIR = $(shell pwd)/lib -TARGETS = stm32/f1 stm32/f2 stm32/f4 lpc13xx lpc17xx lpc43xx lm3s efm32/efm32tg efm32/efm32g efm32/efm32lg efm32/efm32gg +TARGETS = stm32/f1 stm32/f2 stm32/f4 stm32/l1 lpc13xx lpc17xx lpc43xx lm3s efm32/efm32tg efm32/efm32g efm32/efm32lg efm32/efm32gg # Be silent per default, but 'make V=1' will show all compiler calls. ifneq ($(V),1) diff --git a/examples/stm32/l1/Makefile.include b/examples/stm32/l1/Makefile.include new file mode 100644 index 00000000..f152b2aa --- /dev/null +++ b/examples/stm32/l1/Makefile.include @@ -0,0 +1,165 @@ +## +## This file is part of the libopencm3 project. +## +## Copyright (C) 2009 Uwe Hermann +## Copyright (C) 2010 Piotr Esden-Tempski +## +## This library is free software: you can redistribute it and/or modify +## it under the terms of the GNU Lesser General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This library is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU Lesser General Public License for more details. +## +## You should have received a copy of the GNU Lesser General Public License +## along with this library. If not, see . +## + +PREFIX ?= arm-none-eabi +#PREFIX ?= arm-elf +CC = $(PREFIX)-gcc +LD = $(PREFIX)-gcc +OBJCOPY = $(PREFIX)-objcopy +OBJDUMP = $(PREFIX)-objdump +GDB = $(PREFIX)-gdb +# If you are copying this file to use in your own project, +# You will need to change this... (Leave unset to assume installed +# in the toolchain itself) +#OPENCM3_DIR ?= /opt/libopencm3/$(PREFIX) +OPENCM3_DIR ?= ../../../../.. + +ARCH_FLAGS = -mcpu=cortex-m3 -mthumb -msoft-float +CFLAGS += -g -Os -Wall -Wextra \ + -fno-common $(ARCH_FLAGS) -MD -DSTM32L1 +LDSCRIPT ?= $(BINARY).ld +LDFLAGS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group \ + -T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections \ + $(ARCH_FLAGS) -mfix-cortex-m3-ldrd + +ifneq ($(OPENCM3_DIR),) +CFLAGS += -I$(OPENCM3_DIR)/include +LDFLAGS += -L$(OPENCM3_DIR)/lib -L$(OPENCM3_DIR)/lib/stm32/l1 +SCRIPT_DIR = $(OPENCM3_DIR)/share +else +SCRIPT_DIR = $(shell dirname $(shell readlink -f $(shell which $(PREFIX)-gcc)))/../$(PREFIX)/share +endif + +OBJS += $(BINARY).o + +OOCD ?= openocd +OOCD_INTERFACE ?= flossjtag +OOCD_BOARD ?= olimex_stm32_h103 +# Black magic probe specific variables +# Set the BMP_PORT to a serial port and then BMP is used for flashing +BMP_PORT ?= +# texane/stlink can be used by uncommenting this... +# or defining it in your own makefiles +#STLINK_PORT ?= :4242 + +# Be silent per default, but 'make V=1' will show all compiler calls. +ifneq ($(V),1) +Q := @ +NULL := 2>/dev/null +else +LDFLAGS += -Wl,--print-gc-sections +endif + +.SUFFIXES: .elf .bin .hex .srec .list .images +.SECONDEXPANSION: +.SECONDARY: + +all: images + +images: $(BINARY).images +flash: $(BINARY).flash + +%.images: %.bin %.hex %.srec %.list + @#echo "*** $* images generated ***" + +%.bin: %.elf + @#printf " OBJCOPY $(*).bin\n" + $(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin + +%.hex: %.elf + @#printf " OBJCOPY $(*).hex\n" + $(Q)$(OBJCOPY) -Oihex $(*).elf $(*).hex + +%.srec: %.elf + @#printf " OBJCOPY $(*).srec\n" + $(Q)$(OBJCOPY) -Osrec $(*).elf $(*).srec + +%.list: %.elf + @#printf " OBJDUMP $(*).list\n" + $(Q)$(OBJDUMP) -S $(*).elf > $(*).list + +ifeq ($(OPENCM3_DIR),) +%.elf: $(OBJS) $(LDSCRIPT) +else +%.elf: $(OBJS) $(LDSCRIPT) $(OPENCM3_DIR)/lib/stm32/l1/libopencm3_stm32l1.a +endif + @#printf " LD $(subst $(shell pwd)/,,$(@))\n" + $(Q)$(LD) -o $(*).elf $(OBJS) -lopencm3_stm32l1 $(LDFLAGS) + +%.o: %.c Makefile + @#printf " CC $(subst $(shell pwd)/,,$(@))\n" + $(Q)$(CC) $(CFLAGS) -o $@ -c $< + +clean: + $(Q)rm -f *.o + $(Q)rm -f *.d + $(Q)rm -f *.elf + $(Q)rm -f *.bin + $(Q)rm -f *.hex + $(Q)rm -f *.srec + $(Q)rm -f *.list + +ifeq ($(STLINK_PORT),) +ifeq ($(BMP_PORT),) +ifeq ($(OOCD_SERIAL),) +%.flash: %.hex + @printf " FLASH $<\n" + @# IMPORTANT: Don't use "resume", only "reset" will work correctly! + $(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \ + -f board/$(OOCD_BOARD).cfg \ + -c "init" -c "reset init" \ + -c "stm32l1x mass_erase 0" \ + -c "flash write_image $(*).hex" \ + -c "reset" \ + -c "shutdown" $(NULL) +else +%.flash: %.hex + @printf " FLASH $<\n" + @# IMPORTANT: Don't use "resume", only "reset" will work correctly! + $(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \ + -f board/$(OOCD_BOARD).cfg \ + -c "ft2232_serial $(OOCD_SERIAL)" \ + -c "init" -c "reset init" \ + -c "stm32l1x mass_erase 0" \ + -c "flash write_image $(*).hex" \ + -c "reset" \ + -c "shutdown" $(NULL) +endif +else +%.flash: %.elf + @echo " GDB $(*).elf (flash)" + $(Q)$(GDB) --batch \ + -ex 'target extended-remote $(BMP_PORT)' \ + -x $(TOOLCHAIN_DIR)/scripts/black_magic_probe_flash.scr \ + $(*).elf +endif +else +%.flash: %.elf + @echo " GDB $(*).elf (flash)" + $(Q)$(GDB) --batch \ + -ex 'target extended-remote $(STLINK_PORT)' \ + -x $(SCRIPT_DIR)/libopencm3/scripts/stlink_flash.scr \ + $(*).elf +endif + +.PHONY: images clean + +-include $(OBJS:.o=.d) + diff --git a/examples/stm32/l1/stm32l-discovery/miniblink/Makefile b/examples/stm32/l1/stm32l-discovery/miniblink/Makefile new file mode 100644 index 00000000..8c88be07 --- /dev/null +++ b/examples/stm32/l1/stm32l-discovery/miniblink/Makefile @@ -0,0 +1,25 @@ +## +## This file is part of the libopencm3 project. +## +## Copyright (C) 2009 Uwe Hermann +## +## This library is free software: you can redistribute it and/or modify +## it under the terms of the GNU Lesser General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This library is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU Lesser General Public License for more details. +## +## You should have received a copy of the GNU Lesser General Public License +## along with this library. If not, see . +## + +BINARY = miniblink + +LDSCRIPT = ../stm32l15xxB.ld + +include ../../Makefile.include + diff --git a/examples/stm32/l1/stm32l-discovery/miniblink/README b/examples/stm32/l1/stm32l-discovery/miniblink/README new file mode 100644 index 00000000..8bdd3144 --- /dev/null +++ b/examples/stm32/l1/stm32l-discovery/miniblink/README @@ -0,0 +1,9 @@ +------------------------------------------------------------------------------ +README +------------------------------------------------------------------------------ + +This is the smallest-possible example program using libopencm3. + +It's intended for the ST STM32L-DISCOVERY eval board. It should blink +the blue LED on the board. + diff --git a/examples/stm32/l1/stm32l-discovery/miniblink/miniblink.c b/examples/stm32/l1/stm32l-discovery/miniblink/miniblink.c new file mode 100644 index 00000000..a9d7c3dc --- /dev/null +++ b/examples/stm32/l1/stm32l-discovery/miniblink/miniblink.c @@ -0,0 +1,72 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann + * Copyright (C) 2011 Stephen Caudle + * Copyright (C) 2012 Karl Palsson + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see . + */ + +#include +#include + +#define PORT_LED GPIOB +#define PIN_LED GPIO6 + +void gpio_setup(void) +{ + /* Enable GPIOB clock. */ + /* Manually: */ + RCC_AHBENR |= RCC_AHBENR_IOPBEN; + /* Using API functions: */ + //rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_IOPBEN); + + /* Set GPIO6 (in GPIO port B) to 'output push-pull'. */ + /* Using API functions: */ + gpio_mode_setup(PORT_LED, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, PIN_LED); +} + +int main(void) +{ + int i; + + gpio_setup(); + + /* Blink the LED (PC8) on the board. */ + while (1) { + /* Manually: */ + // GPIOD_BSRR = GPIO12; /* LED off */ + // for (i = 0; i < 1000000; i++) /* Wait a bit. */ + // __asm__("nop"); + // GPIOD_BRR = GPIO12; /* LED on */ + // for (i = 0; i < 1000000; i++) /* Wait a bit. */ + // __asm__("nop"); + + /* Using API functions gpio_set()/gpio_clear(): */ + // gpio_set(GPIOD, GPIO12); /* LED off */ + // for (i = 0; i < 1000000; i++) /* Wait a bit. */ + // __asm__("nop"); + // gpio_clear(GPIOD, GPIO12); /* LED on */ + // for (i = 0; i < 1000000; i++) /* Wait a bit. */ + // __asm__("nop"); + + /* Using API function gpio_toggle(): */ + gpio_toggle(PORT_LED, PORT_LED); /* LED on/off */ + for (i = 0; i < 1000000; i++) /* Wait a bit. */ + __asm__("nop"); + } + + return 0; +} diff --git a/include/libopencm3/stm32/l1/gpio.h b/include/libopencm3/stm32/l1/gpio.h new file mode 100644 index 00000000..76325a9e --- /dev/null +++ b/include/libopencm3/stm32/l1/gpio.h @@ -0,0 +1,241 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann + * Copyright (C) 2012 Piotr Esden-Tempski + * Copyright (C) 2012 Karl Palsson + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see . + */ + +#ifndef LIBOPENCM3_GPIO_H +#define LIBOPENCM3_GPIO_H + +#include +#include + +/* --- Convenience macros -------------------------------------------------- */ + +/* GPIO port base addresses (for convenience) */ +#define GPIOA GPIO_PORT_A_BASE +#define GPIOB GPIO_PORT_B_BASE +#define GPIOC GPIO_PORT_C_BASE +#define GPIOD GPIO_PORT_D_BASE +#define GPIOE GPIO_PORT_E_BASE +#define GPIOH GPIO_PORT_H_BASE + +/* GPIO number definitions (for convenience) */ +#define GPIO0 (1 << 0) +#define GPIO1 (1 << 1) +#define GPIO2 (1 << 2) +#define GPIO3 (1 << 3) +#define GPIO4 (1 << 4) +#define GPIO5 (1 << 5) +#define GPIO6 (1 << 6) +#define GPIO7 (1 << 7) +#define GPIO8 (1 << 8) +#define GPIO9 (1 << 9) +#define GPIO10 (1 << 10) +#define GPIO11 (1 << 11) +#define GPIO12 (1 << 12) +#define GPIO13 (1 << 13) +#define GPIO14 (1 << 14) +#define GPIO15 (1 << 15) +#define GPIO_ALL 0xffff + +/* --- GPIO registers ------------------------------------------------------ */ + +/* Port mode register (GPIOx_MODER) */ +#define GPIO_MODER(port) MMIO32(port + 0x00) +#define GPIOA_MODER GPIO_MODER(GPIOA) +#define GPIOB_MODER GPIO_MODER(GPIOB) +#define GPIOC_MODER GPIO_MODER(GPIOC) +#define GPIOD_MODER GPIO_MODER(GPIOD) +#define GPIOE_MODER GPIO_MODER(GPIOE) +#define GPIOH_MODER GPIO_MODER(GPIOH) + +/* Port output type register (GPIOx_OTYPER) */ +#define GPIO_OTYPER(port) MMIO32(port + 0x04) +#define GPIOA_OTYPER GPIO_OTYPER(GPIOA) +#define GPIOB_OTYPER GPIO_OTYPER(GPIOB) +#define GPIOC_OTYPER GPIO_OTYPER(GPIOC) +#define GPIOD_OTYPER GPIO_OTYPER(GPIOD) +#define GPIOE_OTYPER GPIO_OTYPER(GPIOE) +#define GPIOH_OTYPER GPIO_OTYPER(GPIOH) + +/* Port output speed register (GPIOx_OSPEEDR) */ +#define GPIO_OSPEEDR(port) MMIO32(port + 0x08) +#define GPIOA_OSPEEDR GPIO_OSPEEDR(GPIOA) +#define GPIOB_OSPEEDR GPIO_OSPEEDR(GPIOB) +#define GPIOC_OSPEEDR GPIO_OSPEEDR(GPIOC) +#define GPIOD_OSPEEDR GPIO_OSPEEDR(GPIOD) +#define GPIOE_OSPEEDR GPIO_OSPEEDR(GPIOE) +#define GPIOH_OSPEEDR GPIO_OSPEEDR(GPIOH) + +/* Port pull-up/pull-down register (GPIOx_PUPDR) */ +#define GPIO_PUPDR(port) MMIO32(port + 0x0c) +#define GPIOA_PUPDR GPIO_PUPDR(GPIOA) +#define GPIOB_PUPDR GPIO_PUPDR(GPIOB) +#define GPIOC_PUPDR GPIO_PUPDR(GPIOC) +#define GPIOD_PUPDR GPIO_PUPDR(GPIOD) +#define GPIOE_PUPDR GPIO_PUPDR(GPIOE) +#define GPIOH_PUPDR GPIO_PUPDR(GPIOH) + +/* Port input data register (GPIOx_IDR) */ +#define GPIO_IDR(port) MMIO32(port + 0x10) +#define GPIOA_IDR GPIO_IDR(GPIOA) +#define GPIOB_IDR GPIO_IDR(GPIOB) +#define GPIOC_IDR GPIO_IDR(GPIOC) +#define GPIOD_IDR GPIO_IDR(GPIOD) +#define GPIOE_IDR GPIO_IDR(GPIOE) +#define GPIOH_IDR GPIO_IDR(GPIOH) + +/* Port output data register (GPIOx_ODR) */ +#define GPIO_ODR(port) MMIO32(port + 0x14) +#define GPIOA_ODR GPIO_ODR(GPIOA) +#define GPIOB_ODR GPIO_ODR(GPIOB) +#define GPIOC_ODR GPIO_ODR(GPIOC) +#define GPIOD_ODR GPIO_ODR(GPIOD) +#define GPIOE_ODR GPIO_ODR(GPIOE) +#define GPIOH_ODR GPIO_ODR(GPIOH) + +/* Port bit set/reset register (GPIOx_BSRR) */ +#define GPIO_BSRR(port) MMIO32(port + 0x18) +#define GPIOA_BSRR GPIO_BSRR(GPIOA) +#define GPIOB_BSRR GPIO_BSRR(GPIOB) +#define GPIOC_BSRR GPIO_BSRR(GPIOC) +#define GPIOD_BSRR GPIO_BSRR(GPIOD) +#define GPIOE_BSRR GPIO_BSRR(GPIOE) +#define GPIOH_BSRR GPIO_BSRR(GPIOH) + +/* Port configuration lock register (GPIOx_LCKR) */ +#define GPIO_LCKR(port) MMIO32(port + 0x1C) +#define GPIOA_LCKR GPIO_LCKR(GPIOA) +#define GPIOB_LCKR GPIO_LCKR(GPIOB) +#define GPIOC_LCKR GPIO_LCKR(GPIOC) +#define GPIOD_LCKR GPIO_LCKR(GPIOD) +#define GPIOE_LCKR GPIO_LCKR(GPIOE) +#define GPIOH_LCKR GPIO_LCKR(GPIOH) + +/* Alternate function low register (GPIOx_AFRL) */ +#define GPIO_AFRL(port) MMIO32(port + 0x20) +#define GPIOA_AFRL GPIO_AFRL(GPIOA) +#define GPIOB_AFRL GPIO_AFRL(GPIOB) +#define GPIOC_AFRL GPIO_AFRL(GPIOC) +#define GPIOD_AFRL GPIO_AFRL(GPIOD) +#define GPIOE_AFRL GPIO_AFRL(GPIOE) +#define GPIOH_AFRL GPIO_AFRL(GPIOH) + +/* Alternate function high register (GPIOx_AFRH) */ +#define GPIO_AFRH(port) MMIO32(port + 0x24) +#define GPIOA_AFRH GPIO_AFRH(GPIOA) +#define GPIOB_AFRH GPIO_AFRH(GPIOB) +#define GPIOC_AFRH GPIO_AFRH(GPIOC) +#define GPIOD_AFRH GPIO_AFRH(GPIOD) +#define GPIOE_AFRH GPIO_AFRH(GPIOE) +#define GPIOH_AFRH GPIO_AFRH(GPIOH) + +/* --- GPIOx_MODER values-------------------------------------------- */ + +#define GPIO_MODE(n, mode) (mode << (2 * (n))) +#define GPIO_MODE_MASK(n) (0x3 << (2 * (n))) +#define GPIO_MODE_INPUT 0x00 /* Default */ +#define GPIO_MODE_OUTPUT 0x01 +#define GPIO_MODE_ALTFN 0x02 +#define GPIO_MODE_ANALOG 0x03 + +/* --- GPIOx_OTYPER values -------------------------------------------- */ +/* Output type (OTx values) */ +#define GPIO_OTYPE_PP 0x0 +#define GPIO_OTYPE_OD 0x1 + +/* Output speed values */ +#define GPIO_OSPEED(n, speed) (speed << (2 * (n))) +#define GPIO_OSPEED_MASK(n) (0x3 << (2 * (n))) +#define GPIO_OSPEED_400KHZ 0x0 +#define GPIO_OSPEED_2MHZ 0x1 +#define GPIO_OSPEED_10MHZ 0x2 +#define GPIO_OSPEED_40MHZ 0x3 + +/* --- GPIOx_PUPDR values ------------------------------------------- */ + +#define GPIO_PUPD(n, pupd) (pupd << (2 * (n))) +#define GPIO_PUPD_MASK(n) (0x3 << (2 * (n))) +#define GPIO_PUPD_NONE 0x0 +#define GPIO_PUPD_PULLUP 0x1 +#define GPIO_PUPD_PULLDOWN 0x2 + +/* --- GPIO_IDR values ----------------------------------------------------- */ + +/* GPIO_IDR[15:0]: IDRy[15:0]: Port input data (y = 0..15) */ + +/* --- GPIO_ODR values ----------------------------------------------------- */ + +/* GPIO_ODR[15:0]: ODRy[15:0]: Port output data (y = 0..15) */ + +/* --- GPIO_BSRR values ---------------------------------------------------- */ + +/* GPIO_BSRR[31:16]: BRy: Port x reset bit y (y = 0..15) */ +/* GPIO_BSRR[15:0]: BSy: Port x set bit y (y = 0..15) */ + +/* --- GPIO_LCKR values ---------------------------------------------------- */ + +#define GPIO_LCKK (1 << 16) +/* GPIO_LCKR[15:0]: LCKy: Port x lock bit y (y = 0..15) */ + +/* --- GPIOx_AFRL/H values ------------------------------------------------- */ + +/* Note: AFRL is used for bits 0..7, AFRH is used for 8..15 */ +/* See datasheet table 5, page 35 for the definitions */ + +#define GPIO_AFR(n, af) (af << ((n) * 4)) +#define GPIO_AFR_MASK(n) (0xf << ((n) * 4)) +#define GPIO_AF0 0x0 +#define GPIO_AF1 0x1 +#define GPIO_AF2 0x2 +#define GPIO_AF3 0x3 +#define GPIO_AF4 0x4 +#define GPIO_AF5 0x5 +#define GPIO_AF6 0x6 +#define GPIO_AF7 0x7 +#define GPIO_AF8 0x8 +#define GPIO_AF9 0x9 +#define GPIO_AF10 0xa +#define GPIO_AF11 0xb +#define GPIO_AF12 0xc +#define GPIO_AF13 0xd +#define GPIO_AF14 0xe +#define GPIO_AF15 0xf + +/* --- Function prototypes ------------------------------------------------- */ + +/* + * L1, like F2 and F4, has the "new" GPIO peripheral, so use that style + * TODO: this should all really be moved to a "common" gpio header + */ + +void gpio_mode_setup(u32 gpioport, u8 mode, u8 pull_up_down, u16 gpios); +void gpio_set_output_options(u32 gpioport, u8 otype, u8 speed, u16 gpios); +void gpio_set_af(u32 gpioport, u8 alt_func_num, u16 gpios); + +/* F1 compatible api */ +void gpio_set(u32 gpioport, u16 gpios); +void gpio_clear(u32 gpioport, u16 gpios); +u16 gpio_get(u32 gpioport, u16 gpios); +void gpio_toggle(u32 gpioport, u16 gpios); +u16 gpio_port_read(u32 gpioport); +void gpio_port_write(u32 gpioport, u16 data); +void gpio_port_config_lock(u32 gpioport, u16 gpios); + +#endif diff --git a/include/libopencm3/stm32/l1/rcc.h b/include/libopencm3/stm32/l1/rcc.h new file mode 100644 index 00000000..ebcca86d --- /dev/null +++ b/include/libopencm3/stm32/l1/rcc.h @@ -0,0 +1,453 @@ +/** @file + +@ingroup STM32L1xx + +@brief libopencm3 STM32L1xx Reset and Clock Control + +@version 1.0.0 + +@author @htmlonly © @endhtmlonly 2009 Federico Ruiz-Ugalde \ +@author @htmlonly © @endhtmlonly 2009 Uwe Hermann +@author @htmlonly © @endhtmlonly 2012 Karl Palsson + +@date 18 May 2012 + +LGPL License Terms @ref lgpl_license + */ +/** @defgroup STM32L1xx_rcc_defines + +@brief Defined Constants and Types for the STM32L1xx Reset and Clock Control + +@ingroup STM32L1xx_defines + +LGPL License Terms @ref lgpl_license + + */ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann + * Copyright (C) 2009 Federico Ruiz-Ugalde + * Copyright (C) 2012 Karl Palsson + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see . + * + * Originally based on the F1 code, as it seemed most similar to the L1 + * TODO: very incomplete still! + */ + +#ifndef LIBOPENCM3_RCC_H +#define LIBOPENCM3_RCC_H + +#include +#include + +/* --- RCC registers ------------------------------------------------------- */ + +#define RCC_CR MMIO32(RCC_BASE + 0x00) +#define RCC_ICSCR MMIO32(RCC_BASE + 0x04) +#define RCC_CFGR MMIO32(RCC_BASE + 0x08) +#define RCC_CIR MMIO32(RCC_BASE + 0x0c) +#define RCC_AHBRSTR MMIO32(RCC_BASE + 0x10) +#define RCC_APB2RSTR MMIO32(RCC_BASE + 0x14) +#define RCC_APB1RSTR MMIO32(RCC_BASE + 0x18) +#define RCC_AHBENR MMIO32(RCC_BASE + 0x1c) +#define RCC_APB2ENR MMIO32(RCC_BASE + 0x20) +#define RCC_APB1ENR MMIO32(RCC_BASE + 0x24) +#define RCC_AHBLPENR MMIO32(RCC_BASE + 0x28) +#define RCC_APB2LPENR MMIO32(RCC_BASE + 0x2c) +#define RCC_APB1LPENR MMIO32(RCC_BASE + 0x30) +#define RCC_CSR MMIO32(RCC_BASE + 0x34) + +/* --- RCC_CR values ------------------------------------------------------- */ + +/* RTCPRE[1:0] at 30:29 */ +#define RCC_CR_CSSON (1 << 28) +#define RCC_CR_PLLRDY (1 << 25) +#define RCC_CR_PLLON (1 << 24) +#define RCC_CR_HSEBYP (1 << 18) +#define RCC_CR_HSERDY (1 << 17) +#define RCC_CR_HSEON (1 << 16) +#define RCC_CR_MSIRDY (1 << 9) +#define RCC_CR_MSION (1 << 8) +#define RCC_CR_HSIRDY (1 << 1) +#define RCC_CR_HSION (1 << 0) + +/* --- RCC_ICSCR values ---------------------------------------------------- */ + +// TODO + +/* --- RCC_CFGR values ----------------------------------------------------- */ + +/* MCOPRE */ +#define RCC_CFGR_MCOPRE_DIV1 0 +#define RCC_CFGR_MCOPRE_DIV2 1 +#define RCC_CFGR_MCOPRE_DIV4 2 +#define RCC_CFGR_MCOPRE_DIV8 3 +#define RCC_CFGR_MCOPRE_DIV16 4 + +/* MCO: Microcontroller clock output */ +#define RCC_CFGR_MCO_NOCLK 0x0 +#define RCC_CFGR_MCO_SYSCLK 0x1 +#define RCC_CFGR_MCO_HSICLK 0x2 +#define RCC_CFGR_MCO_MSICLK 0x3 +#define RCC_CFGR_MCO_HSECLK 0x4 +#define RCC_CFGR_MCO_PLLCLK 0x5 +#define RCC_CFGR_MCO_LSICLK 0x6 +#define RCC_CFGR_MCO_LSECLK 0x7 + +/* PLL Output division selection */ +#define RCC_CFGR_PLLDIV_DIV2 0x1 +#define RCC_CFGR_PLLDIV_DIV3 0x2 +#define RCC_CFGR_PLLDIV_DIV4 0x3 + +/* PLLMUL: PLL multiplication factor */ +#define RCC_CFGR_PLLMUL_MUL3 0x0 +#define RCC_CFGR_PLLMUL_MUL4 0x1 +#define RCC_CFGR_PLLMUL_MUL6 0x2 +#define RCC_CFGR_PLLMUL_MUL8 0x3 +#define RCC_CFGR_PLLMUL_MUL12 0x4 +#define RCC_CFGR_PLLMUL_MUL16 0x5 +#define RCC_CFGR_PLLMUL_MUL24 0x6 +#define RCC_CFGR_PLLMUL_MUL32 0x7 +#define RCC_CFGR_PLLMUL_MUL48 0x8 + +/* PLLSRC: PLL entry clock source */ +#define RCC_CFGR_PLLSRC_HSI_CLK 0x0 +#define RCC_CFGR_PLLSRC_HSE_CLK 0x1 + +/* PPRE2: APB high-speed prescaler (APB2) */ +#define RCC_CFGR_PPRE2_HCLK_NODIV 0x0 +#define RCC_CFGR_PPRE2_HCLK_DIV2 0x4 +#define RCC_CFGR_PPRE2_HCLK_DIV4 0x5 +#define RCC_CFGR_PPRE2_HCLK_DIV8 0x6 +#define RCC_CFGR_PPRE2_HCLK_DIV16 0x7 + +/* PPRE1: APB low-speed prescaler (APB1) */ +#define RCC_CFGR_PPRE1_HCLK_NODIV 0x0 +#define RCC_CFGR_PPRE1_HCLK_DIV2 0x4 +#define RCC_CFGR_PPRE1_HCLK_DIV4 0x5 +#define RCC_CFGR_PPRE1_HCLK_DIV8 0x6 +#define RCC_CFGR_PPRE1_HCLK_DIV16 0x7 + +/* HPRE: AHB prescaler */ +#define RCC_CFGR_HPRE_SYSCLK_NODIV 0x0 +#define RCC_CFGR_HPRE_SYSCLK_DIV2 0x8 +#define RCC_CFGR_HPRE_SYSCLK_DIV4 0x9 +#define RCC_CFGR_HPRE_SYSCLK_DIV8 0xa +#define RCC_CFGR_HPRE_SYSCLK_DIV16 0xb +#define RCC_CFGR_HPRE_SYSCLK_DIV64 0xc +#define RCC_CFGR_HPRE_SYSCLK_DIV128 0xd +#define RCC_CFGR_HPRE_SYSCLK_DIV256 0xe +#define RCC_CFGR_HPRE_SYSCLK_DIV512 0xf + +/* SWS: System clock switch status */ +#define RCC_CFGR_SWS_SYSCLKSEL_MSICLK 0x0 +#define RCC_CFGR_SWS_SYSCLKSEL_HSICLK 0x1 +#define RCC_CFGR_SWS_SYSCLKSEL_HSECLK 0x2 +#define RCC_CFGR_SWS_SYSCLKSEL_PLLCLK 0x3 + +/* SW: System clock switch */ +#define RCC_CFGR_SW_SYSCLKSEL_MSICLK 0x0 +#define RCC_CFGR_SW_SYSCLKSEL_HSICLK 0x1 +#define RCC_CFGR_SW_SYSCLKSEL_HSECLK 0x2 +#define RCC_CFGR_SW_SYSCLKSEL_PLLCLK 0x3 + +/* --- RCC_CIR values ------------------------------------------------------ */ + +/* Clock security system interrupt clear bit */ +#define RCC_CIR_CSSC (1 << 23) + +/* OSC ready interrupt clear bits */ +#define RCC_CIR_MSIRDYC (1 << 21) +#define RCC_CIR_PLLRDYC (1 << 20) +#define RCC_CIR_HSERDYC (1 << 19) +#define RCC_CIR_HSIRDYC (1 << 18) +#define RCC_CIR_LSERDYC (1 << 17) +#define RCC_CIR_LSIRDYC (1 << 16) + +/* OSC ready interrupt enable bits */ +#define RCC_CIR_MSIRDYIE (1 << 13) +#define RCC_CIR_PLLRDYIE (1 << 12) +#define RCC_CIR_HSERDYIE (1 << 11) +#define RCC_CIR_HSIRDYIE (1 << 10) +#define RCC_CIR_LSERDYIE (1 << 9) +#define RCC_CIR_LSIRDYIE (1 << 8) + +/* Clock security system interrupt flag bit */ +#define RCC_CIR_CSSF (1 << 7) + +/* OSC ready interrupt flag bits */ +#define RCC_CIR_MSIRDYF (1 << 5) /* (**) */ +#define RCC_CIR_PLLRDYF (1 << 4) +#define RCC_CIR_HSERDYF (1 << 3) +#define RCC_CIR_HSIRDYF (1 << 2) +#define RCC_CIR_LSERDYF (1 << 1) +#define RCC_CIR_LSIRDYF (1 << 0) + +/* --- RCC_AHBRSTR values ------------------------------------------------- */ +#define RCC_AHBRSTR_DMA1RST (1 << 24) +#define RCC_AHBRSTR_FLITFRST (1 << 15) +#define RCC_AHBRSTR_CRCRST (1 << 12) +#define RCC_AHBRSTR_GPIOHRST (1 << 5) +#define RCC_AHBRSTR_GPIOERST (1 << 4) +#define RCC_AHBRSTR_GPIODRST (1 << 3) +#define RCC_AHBRSTR_GPIOCRST (1 << 2) +#define RCC_AHBRSTR_GPIOBRST (1 << 1) +#define RCC_AHBRSTR_GPIOARST (1 << 0) + +/* --- RCC_APB2RSTR values ------------------------------------------------- */ + +#define RCC_APB2RSTR_USART1RST (1 << 14) +#define RCC_APB2RSTR_SPI1RST (1 << 12) +#define RCC_APB2RSTR_ADC1RST (1 << 9) +#define RCC_APB2RSTR_TIM11RST (1 << 4) +#define RCC_APB2RSTR_TIM10RST (1 << 3) +#define RCC_APB2RSTR_TIM9RST (1 << 2) +#define RCC_APB2RSTR_SYSCFGRST (1 << 0) + +/* --- RCC_APB1RSTR values ------------------------------------------------- */ + +TODO : up to here + +#define RCC_APB1RSTR_DACRST (1 << 29) +#define RCC_APB1RSTR_PWRRST (1 << 28) +#define RCC_APB1RSTR_BKPRST (1 << 27) +#define RCC_APB1RSTR_CAN2RST (1 << 26) /* (**) */ +#define RCC_APB1RSTR_CAN1RST (1 << 25) /* (**) */ +#define RCC_APB1RSTR_CANRST (1 << 25) /* (XX) Alias for CAN1RST */ +#define RCC_APB1RSTR_USBRST (1 << 23) /* (XX) */ +#define RCC_APB1RSTR_I2C2RST (1 << 22) +#define RCC_APB1RSTR_I2C1RST (1 << 21) +#define RCC_APB1RSTR_UART5RST (1 << 20) +#define RCC_APB1RSTR_UART4RST (1 << 19) +#define RCC_APB1RSTR_USART3RST (1 << 18) +#define RCC_APB1RSTR_USART2RST (1 << 17) +#define RCC_APB1RSTR_SPI3RST (1 << 15) +#define RCC_APB1RSTR_SPI2RST (1 << 14) +#define RCC_APB1RSTR_WWDGRST (1 << 11) +#define RCC_APB1RSTR_TIM7RST (1 << 5) +#define RCC_APB1RSTR_TIM6RST (1 << 4) +#define RCC_APB1RSTR_TIM5RST (1 << 3) +#define RCC_APB1RSTR_TIM4RST (1 << 2) +#define RCC_APB1RSTR_TIM3RST (1 << 1) +#define RCC_APB1RSTR_TIM2RST (1 << 0) + +/* --- RCC_AHBENR values --------------------------------------------------- */ + +/** @defgroup rcc_ahbenr_en RCC_AHBENR enable values +@ingroup STM32L1xx_rcc_defines + +@{*/ +#define RCC_AHBENR_ETHMACENRX (1 << 16) +#define RCC_AHBENR_ETHMACENTX (1 << 15) +#define RCC_AHBENR_ETHMACEN (1 << 14) +#define RCC_AHBENR_OTGFSEN (1 << 12) +#define RCC_AHBENR_SDIOEN (1 << 10) +#define RCC_AHBENR_FSMCEN (1 << 8) +#define RCC_AHBENR_CRCEN (1 << 6) +#define RCC_AHBENR_FLITFEN (1 << 4) +#define RCC_AHBENR_SRAMEN (1 << 2) +#define RCC_AHBENR_DMA2EN (1 << 1) +#define RCC_AHBENR_DMA1EN (1 << 0) +/*@}*/ + +/* --- RCC_APB2ENR values -------------------------------------------------- */ + +/** @defgroup rcc_apb2enr_en RCC_APB2ENR enable values +@ingroup STM32L1xx_rcc_defines + +@{*/ +#define RCC_APB2ENR_ADC3EN (1 << 15) /* (XX) */ +#define RCC_APB2ENR_USART1EN (1 << 14) +#define RCC_APB2ENR_TIM8EN (1 << 13) /* (XX) */ +#define RCC_APB2ENR_SPI1EN (1 << 12) +#define RCC_APB2ENR_TIM1EN (1 << 11) +#define RCC_APB2ENR_ADC2EN (1 << 10) +#define RCC_APB2ENR_ADC1EN (1 << 9) +#define RCC_APB2ENR_IOPGEN (1 << 8) /* (XX) */ +#define RCC_APB2ENR_IOPFEN (1 << 7) /* (XX) */ +#define RCC_APB2ENR_IOPEEN (1 << 6) +#define RCC_APB2ENR_IOPDEN (1 << 5) +#define RCC_APB2ENR_IOPCEN (1 << 4) +#define RCC_APB2ENR_IOPBEN (1 << 3) +#define RCC_APB2ENR_IOPAEN (1 << 2) +#define RCC_APB2ENR_AFIOEN (1 << 0) +/*@}*/ + +/* --- RCC_APB1ENR values -------------------------------------------------- */ + +/** @defgroup rcc_apb1enr_en RCC_APB1ENR enable values +@ingroup STM32L1xx_rcc_defines + +@{*/ +#define RCC_APB1ENR_DACEN (1 << 29) +#define RCC_APB1ENR_PWREN (1 << 28) +#define RCC_APB1ENR_BKPEN (1 << 27) +#define RCC_APB1ENR_CAN2EN (1 << 26) /* (**) */ +#define RCC_APB1ENR_CAN1EN (1 << 25) /* (**) */ +#define RCC_APB1ENR_CANEN (1 << 25) /* (XX) Alias for CAN1EN */ +#define RCC_APB1ENR_USBEN (1 << 23) /* (XX) */ +#define RCC_APB1ENR_I2C2EN (1 << 22) +#define RCC_APB1ENR_I2C1EN (1 << 21) +#define RCC_APB1ENR_UART5EN (1 << 20) +#define RCC_APB1ENR_UART4EN (1 << 19) +#define RCC_APB1ENR_USART3EN (1 << 18) +#define RCC_APB1ENR_USART2EN (1 << 17) +#define RCC_APB1ENR_SPI3EN (1 << 15) +#define RCC_APB1ENR_SPI2EN (1 << 14) +#define RCC_APB1ENR_WWDGEN (1 << 11) +#define RCC_APB1ENR_TIM7EN (1 << 5) +#define RCC_APB1ENR_TIM6EN (1 << 4) +#define RCC_APB1ENR_TIM5EN (1 << 3) +#define RCC_APB1ENR_TIM4EN (1 << 2) +#define RCC_APB1ENR_TIM3EN (1 << 1) +#define RCC_APB1ENR_TIM2EN (1 << 0) +/*@}*/ + +/* --- RCC_BDCR values ----------------------------------------------------- */ + +#define RCC_BDCR_BDRST (1 << 16) +#define RCC_BDCR_RTCEN (1 << 15) +/* RCC_BDCR[9:8]: RTCSEL */ +#define RCC_BDCR_LSEBYP (1 << 2) +#define RCC_BDCR_LSERDY (1 << 1) +#define RCC_BDCR_LSEON (1 << 0) + +/* --- RCC_CSR values ------------------------------------------------------ */ + +#define RCC_CSR_LPWRRSTF (1 << 31) +#define RCC_CSR_WWDGRSTF (1 << 30) +#define RCC_CSR_IWDGRSTF (1 << 29) +#define RCC_CSR_SFTRSTF (1 << 28) +#define RCC_CSR_PORRSTF (1 << 27) +#define RCC_CSR_PINRSTF (1 << 26) +#define RCC_CSR_RMVF (1 << 24) +#define RCC_CSR_LSIRDY (1 << 1) +#define RCC_CSR_LSION (1 << 0) + +/* --- RCC_AHBRSTR values -------------------------------------------------- */ + +#define RCC_AHBRSTR_ETHMACRST (1 << 14) +#define RCC_AHBRSTR_OTGFSRST (1 << 12) + +/* --- RCC_CFGR2 values ---------------------------------------------------- */ + +/* I2S3SRC: I2S3 clock source */ +#define RCC_CFGR2_I2S3SRC_SYSCLK 0x0 +#define RCC_CFGR2_I2S3SRC_PLL3_VCO_CLK 0x1 + +/* I2S2SRC: I2S2 clock source */ +#define RCC_CFGR2_I2S2SRC_SYSCLK 0x0 +#define RCC_CFGR2_I2S2SRC_PLL3_VCO_CLK 0x1 + +/* PREDIV1SRC: PREDIV1 entry clock source */ +#define RCC_CFGR2_PREDIV1SRC_HSE_CLK 0x0 +#define RCC_CFGR2_PREDIV1SRC_PLL2_CLK 0x1 + +#define RCC_CFGR2_PLL2MUL (1 << 0) +#define RCC_CFGR2_PREDIV2 (1 << 0) +#define RCC_CFGR2_PREDIV1 (1 << 0) + +/* PLL3MUL: PLL3 multiplication factor */ +#define RCC_CFGR2_PLL3MUL_PLL3_CLK_MUL8 0x6 +#define RCC_CFGR2_PLL3MUL_PLL3_CLK_MUL9 0x7 +#define RCC_CFGR2_PLL3MUL_PLL3_CLK_MUL10 0x8 +#define RCC_CFGR2_PLL3MUL_PLL3_CLK_MUL11 0x9 +#define RCC_CFGR2_PLL3MUL_PLL3_CLK_MUL12 0xa +#define RCC_CFGR2_PLL3MUL_PLL3_CLK_MUL13 0xb +#define RCC_CFGR2_PLL3MUL_PLL3_CLK_MUL14 0xc +#define RCC_CFGR2_PLL3MUL_PLL3_CLK_MUL16 0xe +#define RCC_CFGR2_PLL3MUL_PLL3_CLK_MUL20 0xf + +/* PLL2MUL: PLL2 multiplication factor */ +#define RCC_CFGR2_PLL2MUL_PLL2_CLK_MUL8 0x6 +#define RCC_CFGR2_PLL2MUL_PLL2_CLK_MUL9 0x7 +#define RCC_CFGR2_PLL2MUL_PLL2_CLK_MUL10 0x8 +#define RCC_CFGR2_PLL2MUL_PLL2_CLK_MUL11 0x9 +#define RCC_CFGR2_PLL2MUL_PLL2_CLK_MUL12 0xa +#define RCC_CFGR2_PLL2MUL_PLL2_CLK_MUL13 0xb +#define RCC_CFGR2_PLL2MUL_PLL2_CLK_MUL14 0xc +#define RCC_CFGR2_PLL2MUL_PLL2_CLK_MUL16 0xe +#define RCC_CFGR2_PLL2MUL_PLL2_CLK_MUL20 0xf + +/* PREDIV2: PREDIV2 division factor */ +#define RCC_CFGR2_PREDIV2_NODIV 0x0 +#define RCC_CFGR2_PREDIV2_DIV2 0x1 +#define RCC_CFGR2_PREDIV2_DIV3 0x2 +#define RCC_CFGR2_PREDIV2_DIV4 0x3 +#define RCC_CFGR2_PREDIV2_DIV5 0x4 +#define RCC_CFGR2_PREDIV2_DIV6 0x5 +#define RCC_CFGR2_PREDIV2_DIV7 0x6 +#define RCC_CFGR2_PREDIV2_DIV8 0x7 +#define RCC_CFGR2_PREDIV2_DIV9 0x8 +#define RCC_CFGR2_PREDIV2_DIV10 0x9 +#define RCC_CFGR2_PREDIV2_DIV11 0xa +#define RCC_CFGR2_PREDIV2_DIV12 0xb +#define RCC_CFGR2_PREDIV2_DIV13 0xc +#define RCC_CFGR2_PREDIV2_DIV14 0xd +#define RCC_CFGR2_PREDIV2_DIV15 0xe +#define RCC_CFGR2_PREDIV2_DIV16 0xf + +/* --- Variable definitions ------------------------------------------------ */ +extern u32 rcc_ppre1_frequency; +extern u32 rcc_ppre2_frequency; + +/* --- Function prototypes ------------------------------------------------- */ + +typedef enum { + PLL, HSE, HSI, LSE, LSI +} osc_t; + +void rcc_osc_ready_int_clear(osc_t osc); +void rcc_osc_ready_int_enable(osc_t osc); +void rcc_osc_ready_int_disable(osc_t osc); +int rcc_osc_ready_int_flag(osc_t osc); +void rcc_css_int_clear(void); +int rcc_css_int_flag(void); +void rcc_wait_for_osc_ready(osc_t osc); +void rcc_osc_on(osc_t osc); +void rcc_osc_off(osc_t osc); +void rcc_css_enable(void); +void rcc_css_disable(void); +void rcc_osc_bypass_enable(osc_t osc); +void rcc_osc_bypass_disable(osc_t osc); +void rcc_peripheral_enable_clock(volatile u32 *reg, u32 en); +void rcc_peripheral_disable_clock(volatile u32 *reg, u32 en); +void rcc_peripheral_reset(volatile u32 *reg, u32 reset); +void rcc_peripheral_clear_reset(volatile u32 *reg, u32 clear_reset); +void rcc_set_sysclk_source(u32 clk); +void rcc_set_pll_multiplication_factor(u32 mul); +void rcc_set_pll_source(u32 pllsrc); +void rcc_set_pllxtpre(u32 pllxtpre); +void rcc_set_adcpre(u32 adcpre); +void rcc_set_ppre2(u32 ppre2); +void rcc_set_ppre1(u32 ppre1); +void rcc_set_hpre(u32 hpre); +void rcc_set_usbpre(u32 usbpre); +u32 rcc_get_system_clock_source(int i); +void rcc_clock_setup_in_hsi_out_64mhz(void); +void rcc_clock_setup_in_hsi_out_48mhz(void); + +/** + * Maximum speed possible for F100 (Value Line) on HSI + */ +void rcc_clock_setup_in_hsi_out_24mhz(void); +void rcc_clock_setup_in_hse_8mhz_out_24mhz(void); +void rcc_clock_setup_in_hse_8mhz_out_72mhz(void); +void rcc_clock_setup_in_hse_12mhz_out_72mhz(void); +void rcc_clock_setup_in_hse_16mhz_out_72mhz(void); +void rcc_backupdomain_reset(void); + +#endif diff --git a/lib/stm32/l1/Makefile b/lib/stm32/l1/Makefile index d2cc1bef..543c4167 100644 --- a/lib/stm32/l1/Makefile +++ b/lib/stm32/l1/Makefile @@ -28,7 +28,7 @@ CFLAGS = -Os -g -Wall -Wextra -I../../../include -fno-common \ -ffunction-sections -fdata-sections -MD -DSTM32L1 # ARFLAGS = rcsv ARFLAGS = rcs -OBJS = vector.o desig.o crc.o +OBJS = vector.o desig.o crc.o gpio.o VPATH += ../../usb:../ diff --git a/lib/stm32/l1/libopencm3_stm32l1.ld b/lib/stm32/l1/libopencm3_stm32l1.ld new file mode 100644 index 00000000..a64a1f77 --- /dev/null +++ b/lib/stm32/l1/libopencm3_stm32l1.ld @@ -0,0 +1,84 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see . + */ + +/* Generic linker script for STM32 targets using libopencm3. */ + +/* Memory regions must be defined in the ld script which includes this one. */ + +/* Enforce emmition of the vector table. */ +EXTERN (vector_table) + +/* Define the entry point of the output file. */ +ENTRY(reset_handler) + +/* Define sections. */ +SECTIONS +{ + . = ORIGIN(rom); + + .text : { + *(.vectors) /* Vector table */ + *(.text*) /* Program code */ + . = ALIGN(4); + *(.rodata*) /* Read-only data */ + . = ALIGN(4); + _etext = .; + } >rom + + /* + * Another section used by C++ stuff, appears when using newlib with + * 64bit (long long) printf support + */ + .ARM.extab : { + *(.ARM.extab*) + } >rom + .ARM.exidx : { + __exidx_start = .; + *(.ARM.exidx*) + __exidx_end = .; + } >rom + + . = ORIGIN(ram); + + .data : AT (__exidx_end) { + _data = .; + *(.data*) /* Read-write initialized data */ + . = ALIGN(4); + _edata = .; + } >ram + + .bss : { + *(.bss*) /* Read-write zero initialized data */ + *(COMMON) + . = ALIGN(4); + _ebss = .; + } >ram AT >rom + + /* + * The .eh_frame section appears to be used for C++ exception handling. + * You may need to fix this if you're using C++. + */ + /DISCARD/ : { *(.eh_frame) } + + . = ALIGN(4); + end = .; +} + +PROVIDE(_stack = ORIGIN(ram) + LENGTH(ram)); + diff --git a/lib/stm32/l1/stm32l15xx8.ld b/lib/stm32/l1/stm32l15xx8.ld new file mode 100644 index 00000000..1f20f571 --- /dev/null +++ b/lib/stm32/l1/stm32l15xx8.ld @@ -0,0 +1,31 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2012 Karl Palsson . + */ + +/* Linker script for STM32L15xx8, 64K flash, 10K RAM. */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 64K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 10K +} + +/* Include the common ld script. */ +INCLUDE libopencm3_stm32l1.ld + diff --git a/lib/stm32/l1/stm32l15xxB.ld b/lib/stm32/l1/stm32l15xxB.ld new file mode 100644 index 00000000..4c14b713 --- /dev/null +++ b/lib/stm32/l1/stm32l15xxB.ld @@ -0,0 +1,31 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2012 Karl Palsson . + */ + +/* Linker script for STM32L15xxB, 128K flash, 16K RAM. */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 16K +} + +/* Include the common ld script. */ +INCLUDE libopencm3_stm32l1.ld +