Added UART files

f2acacc5 · Theodor-Adrian Stana · e5fc761f · f2acacc5 · f2acacc5 · f2acacc5
Commit f2acacc5 authored Jul 08, 2014 by Theodor-Adrian Stana
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Makefile sw/uart/armgcc/Makefile +220 -0

main.c sw/uart/main.c +73 -0

uart.c sw/uart/uart/uart.c +143 -0

uart.h sw/uart/uart/uart.h +68 -0

No files found.
--- a/sw/uart/armgcc/Makefile
+++ b/sw/uart/armgcc/Makefile
+####################################################################
+# Makefile                                                         #
+####################################################################
+
+.SUFFIXES:				# ignore builtin rules
+.PHONY: all debug release clean
+
+####################################################################
+# Definitions                                                      #
+####################################################################
+
+DEVICE = EFM32GG330F1024
+PROJECTNAME = freertos_blink
+# Name of interface configuration file used by OpenOCD
+OOCD_IFACE ?= stlink-v2-1
+
+OBJ_DIR = build
+EXE_DIR = exe
+LST_DIR = lst
+
+####################################################################
+# Definitions of toolchain.                                        #
+# You might need to do changes to match your system setup          #
+####################################################################
+
+# Change path to the tools according to your system configuration
+# DO NOT add trailing whitespace chars, they do matter !
+WINDOWSCS  ?= GNU Tools ARM Embedded\4.7 2012q4
+LINUXCS    ?= /opt/gcc-arm-none-eabi-4_8-2014q1
+
+RMDIRS     := rm -rf
+RMFILES    := rm -rf
+ALLFILES   := /*.*
+NULLDEVICE := /dev/null
+SHELLNAMES := $(ComSpec)$(COMSPEC)
+
+# Try autodetecting the environment
+ifeq ($(SHELLNAMES),)
+  # Assume we are making on a Linux platform
+  TOOLDIR := $(LINUXCS)
+else
+  QUOTE :="
+  ifneq ($(COMSPEC),)
+    # Assume we are making on a mingw/msys/cygwin platform running on Windows
+    # This is a convenient place to override TOOLDIR, DO NOT add trailing
+    # whitespace chars, they do matter !
+    TOOLDIR := $(PROGRAMFILES)/$(WINDOWSCS)
+    ifeq ($(findstring cygdrive,$(shell set)),)
+      # We were not on a cygwin platform
+      NULLDEVICE := NUL
+    endif
+  else
+    # Assume we are making on a Windows platform
+    # This is a convenient place to override TOOLDIR, DO NOT add trailing
+    # whitespace chars, they do matter !
+    SHELL      := $(SHELLNAMES)
+    TOOLDIR    := $(ProgramFiles)/$(WINDOWSCS)
+    RMDIRS     := rd /s /q
+    RMFILES    := del /s /q
+    ALLFILES   := \*.*
+    NULLDEVICE := NUL
+  endif
+endif
+
+# Create directories and do a clean which is compatible with parallell make
+$(shell mkdir $(OBJ_DIR)>$(NULLDEVICE) 2>&1)
+$(shell mkdir $(EXE_DIR)>$(NULLDEVICE) 2>&1)
+$(shell mkdir $(LST_DIR)>$(NULLDEVICE) 2>&1)
+ifeq (clean,$(findstring clean, $(MAKECMDGOALS)))
+  ifneq ($(filter $(MAKECMDGOALS),all debug release),)
+    $(shell $(RMFILES) $(OBJ_DIR)$(ALLFILES)>$(NULLDEVICE) 2>&1)
+    $(shell $(RMFILES) $(EXE_DIR)$(ALLFILES)>$(NULLDEVICE) 2>&1)
+    $(shell $(RMFILES) $(LST_DIR)$(ALLFILES)>$(NULLDEVICE) 2>&1)
+  endif
+endif
+
+CC      = $(QUOTE)$(TOOLDIR)/bin/arm-none-eabi-gcc$(QUOTE)
+LD      = $(QUOTE)$(TOOLDIR)/bin/arm-none-eabi-ld$(QUOTE)
+AR      = $(QUOTE)$(TOOLDIR)/bin/arm-none-eabi-ar$(QUOTE)
+OBJCOPY = $(QUOTE)$(TOOLDIR)/bin/arm-none-eabi-objcopy$(QUOTE)
+DUMP    = $(QUOTE)$(TOOLDIR)/bin/arm-none-eabi-objdump$(QUOTE)
+SIZE    = $(QUOTE)$(TOOLDIR)/bin/arm-none-eabi-size$(QUOTE)
+
+####################################################################
+# Flags                                                            #
+####################################################################
+
+# -MMD : Don't generate dependencies on system header files.
+# -MP  : Add phony targets, useful when a h-file is removed from a project.
+# -MF  : Specify a file to write the dependencies to.
+DEPFLAGS = -MMD -MP -MF $(@:.o=.d)
+
+#
+# Add -Wa,-ahld=$(LST_DIR)/$(@F:.o=.lst) to CFLAGS to produce assembly list files
+#
+override CFLAGS += -D$(DEVICE) -Wall -Wextra -mcpu=cortex-m3 -mthumb \
+-mfix-cortex-m3-ldrd -ffunction-sections \
+-fdata-sections -fomit-frame-pointer -DGCC_ARMCM3 -DDEBUG_EFM  \
+$(DEPFLAGS) -Wfatal-errors
+
+override ASMFLAGS += -x assembler-with-cpp -D$(DEVICE) -Wall -Wextra -mcpu=cortex-m3 -mthumb
+
+#
+# NOTE: The -Wl,--gc-sections flag may interfere with debugging using gdb.
+#
+override LDFLAGS += -Xlinker -Map=$(LST_DIR)/$(PROJECTNAME).map -mcpu=cortex-m3 \
+-mthumb -T../../common/Device/EnergyMicro/EFM32GG/Source/GCC/efm32gg.ld \
+ -Wl,--gc-sections
+
+LIBS = -Wl,--start-group -lgcc -lc -lnosys   -Wl,--end-group
+
+INCLUDEPATHS += \
+-I../../common/CMSIS/Include \
+-I../../common/Device/EnergyMicro/EFM32GG/Include \
+-I../../common/emlib/inc \
+-I../../common/emdrv/sleep/inc \
+-I../uart
+
+####################################################################
+# Files                                                            #
+####################################################################
+
+C_SRC +=  \
+../../common/Device/EnergyMicro/EFM32GG/Source/system_efm32gg.c \
+../../common/emlib/src/em_assert.c \
+../../common/emlib/src/em_burtc.c \
+../../common/emlib/src/em_cmu.c \
+../../common/emlib/src/em_emu.c \
+../../common/emlib/src/em_gpio.c \
+../../common/emlib/src/em_int.c \
+../../common/emlib/src/em_rmu.c \
+../../common/emlib/src/em_rtc.c \
+../../common/emlib/src/em_system.c \
+../.../common/emlib/src/em_usart.c \
+../../common/emdrv/sleep/src/sleep.c \
+../uart/uart.c \
+../main.c
+#../reptile/FreeRTOS/Source/timers.c \
+#../reptile/FreeRTOS/Source/tasks.c \
+#../reptile/FreeRTOS/Source/queue.c \
+#../reptile/FreeRTOS/Source/list.c \
+#../reptile/FreeRTOS/Source/croutine.c \
+#../reptile/FreeRTOS/Source/portable/MemMang/heap_1.c \
+#../reptile/FreeRTOS/Source/portable/GCC/ARM_CM3/port.c \
+#../src/low_power_tick_management.c
+
+s_SRC += 
+
+S_SRC +=  \
+../../common/Device/EnergyMicro/EFM32GG/Source/GCC/startup_efm32gg.S
+
+####################################################################
+# Rules                                                            #
+####################################################################
+
+C_FILES = $(notdir $(C_SRC) )
+S_FILES = $(notdir $(S_SRC) $(s_SRC) )
+#make list of source paths, sort also removes duplicates
+C_PATHS = $(sort $(dir $(C_SRC) ) )
+S_PATHS = $(sort $(dir $(S_SRC) $(s_SRC) ) )
+
+C_OBJS = $(addprefix $(OBJ_DIR)/, $(C_FILES:.c=.o))
+S_OBJS = $(if $(S_SRC), $(addprefix $(OBJ_DIR)/, $(S_FILES:.S=.o)))
+s_OBJS = $(if $(s_SRC), $(addprefix $(OBJ_DIR)/, $(S_FILES:.s=.o)))
+C_DEPS = $(addprefix $(OBJ_DIR)/, $(C_FILES:.c=.d))
+OBJS = $(C_OBJS) $(S_OBJS) $(s_OBJS)
+
+vpath %.c $(C_PATHS)
+vpath %.s $(S_PATHS)
+vpath %.S $(S_PATHS)
+
+# Default build is debug build
+all:      debug
+
+debug:    CFLAGS += -DDEBUG -O0 -g
+debug:    $(EXE_DIR)/$(PROJECTNAME).bin
+
+release:  CFLAGS += -DNDEBUG -O3 
+release:  $(EXE_DIR)/$(PROJECTNAME).bin
+
+# Create objects from C SRC files
+$(OBJ_DIR)/%.o: %.c
+	@echo "Building file: $<"
+	$(CC) $(CFLAGS) $(INCLUDEPATHS) -c -o $@ $<
+
+# Assemble .s/.S files
+$(OBJ_DIR)/%.o: %.s
+	@echo "Assembling $<"
+	$(CC) $(ASMFLAGS) $(INCLUDEPATHS) -c -o $@ $<
+
+$(OBJ_DIR)/%.o: %.S
+	@echo "Assembling $<"
+	$(CC) $(ASMFLAGS) $(INCLUDEPATHS) -c -o $@ $<
+
+# Link
+$(EXE_DIR)/$(PROJECTNAME).out: $(OBJS)
+	@echo "Linking target: $@"
+	$(CC) $(LDFLAGS) $(OBJS) $(LIBS) -o $(EXE_DIR)/$(PROJECTNAME).out
+
+# Create binary file
+$(EXE_DIR)/$(PROJECTNAME).bin: $(EXE_DIR)/$(PROJECTNAME).out
+	@echo "Creating binary file"
+	$(OBJCOPY) -O binary $(EXE_DIR)/$(PROJECTNAME).out $(EXE_DIR)/$(PROJECTNAME).bin
+# Uncomment next line to produce assembly listing of entire program
+#	$(DUMP) -h -S -C $(EXE_DIR)/$(PROJECTNAME).out>$(LST_DIR)/$(PROJECTNAME)out.lst
+# Uncomment next line to produce code footprint
+	$(SIZE) $<
+
+clean:
+ifeq ($(filter $(MAKECMDGOALS),all debug release),)
+	$(RMDIRS) $(OBJ_DIR) $(LST_DIR) $(EXE_DIR)
+endif
+
+flash: $(EXE_DIR)/$(PROJECTNAME).bin
+	openocd -s ../../common/openocd -f interface/$(OOCD_IFACE).cfg -f init.cfg -c "program $(EXE_DIR)/$(PROJECTNAME).bin 0 verify reset"
+
+# include auto-generated dependency files (explicit rules)
+ifneq (clean,$(findstring clean, $(MAKECMDGOALS)))
+-include $(C_DEPS)
+endif
--- a/sw/uart/main.c
+++ b/sw/uart/main.c
+/*
+ *==============================================================================
+ * CERN (BE-CO-HT)
+ * Source file for Main file for UART example
+ *==============================================================================
+ *
+ * author: Theodor Stana (t.stana@cern.ch)
+ *
+ * date of creation: 2014-07-07
+ *
+ * version: 1.0
+ *
+ * description: 
+ *
+ * dependencies:
+ *
+ * references:
+ * 
+ *==============================================================================
+ * GNU LESSER GENERAL PUBLIC LICENSE
+ *==============================================================================
+ * This source file 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 2.1 of the License, or (at your
+ * option) any later version. This source 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
+ * source; if not, download it from http://www.gnu.org/licenses/lgpl-2.1.html
+ *==============================================================================
+ * last changes:
+ *    2014-07-07   Theodor Stana     t.stana@cern.ch     File created
+ *==============================================================================
+ * TODO: - 
+ *==============================================================================
+ */
+  
+#include "uart.h"
+
+#include "em_device.h"
+#include "em_cmu.h"
+
+uint32_t msticks = 0;
+
+void SysTick_Handler()
+{
+        msticks++;
+}
+
+void delay(uint32_t n)
+{
+        uint32_t curticks;
+        curticks = msticks;
+        while ((msticks - curticks) < n)
+                ;
+}
+
+int main()
+{
+        uart_init();
+
+        /* Setup SysTick Timer for 1 msec interrupts  */
+        if (SysTick_Config(CMU_ClockFreqGet(cmuClock_CORE) / 1000)) while (1);
+
+        CMU_ClockEnable(cmuClock_HFPER, true);
+
+        while (1)
+        {
+                uart_puts("supercalifrageristic\n");
+                delay(500);
+        }
+}
--- a/sw/uart/uart/uart.c
+++ b/sw/uart/uart/uart.c
+/*
+ *==============================================================================
+ * CERN (BE-CO-HT)
+ * Source file for Freewatch UART library
+ *==============================================================================
+ *
+ * author: Theodor Stana (t.stana@cern.ch)
+ *
+ * date of creation: 2014-07-07
+ *
+ * version: 1.0
+ *
+ * description:
+ *
+ * dependencies:
+ *
+ * references:
+ *
+ *==============================================================================
+ * GNU LESSER GENERAL PUBLIC LICENSE
+ *==============================================================================
+ * This source file 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 2.1 of the License, or (at your
+ * option) any later version. This source 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
+ * source; if not, download it from http://www.gnu.org/licenses/lgpl-2.1.html
+ *==============================================================================
+ * last changes:
+ *    2014-07-07   Theodor Stana     t.stana@cern.ch     File created
+ *==============================================================================
+ * TODO: -
+ *==============================================================================
+ */
+
+#include "uart.h"
+
+#include "em_cmu.h"
+#include "em_gpio.h"
+#include "em_usart.h"
+
+/*
+ *==============================================================================
+ * UART initialization
+ *
+ *  params:
+ *     * none
+ *
+ *  returns:
+ *     * none
+ *
+ *  comments:
+ *     Initializes UART library for selected UART
+ *
+ *==============================================================================
+ */
+void uart_init()
+{
+        /* Configure GPIO pins */
+        CMU_ClockEnable(cmuClock_GPIO, true);
+
+        /* To avoid false start, configure output as high */
+        GPIO_PinModeSet(UART_TXPORT, UART_TXPIN, gpioModePushPull, 1);
+        GPIO_PinModeSet(UART_RXPORT, UART_RXPIN, gpioModeInput, 0);
+
+        USART_TypeDef           *usart = UART_PORT;
+        USART_InitAsync_TypeDef init   = USART_INITASYNC_DEFAULT;
+
+        /* Enable peripheral clocks */
+        CMU_ClockEnable(cmuClock_HFPER, true);
+        CMU_ClockEnable(UART_CLK, true);
+
+        /* Configure USART for basic async operation */
+        init.enable = usartDisable;
+        USART_InitAsync(usart, &init);
+
+        /* Enable pins at UART1 location #2 */
+        usart->ROUTE = USART_ROUTE_RXPEN | USART_ROUTE_TXPEN | UART_LOC;
+
+        /* Clear previous RX interrupts */
+        USART_IntClear(UART_PORT, USART_IF_RXDATAV);
+        NVIC_ClearPendingIRQ(UART_IRQN);
+
+        /* Enable RX interrupts */
+        USART_IntEnable(UART_PORT, USART_IF_RXDATAV);
+        NVIC_EnableIRQ(UART_IRQN);
+
+        /* Finally enable it */
+        USART_Enable(usart, usartEnable);
+}
+
+/*
+ *==============================================================================
+ * Send character
+ *
+ *  params:
+ *     * char to send
+ *
+ *  returns:
+ *     * none
+ *
+ *  comments:
+ *     Calls the EMLIB function for sending a character over the selected
+ *     UART peripheral.
+ *
+ *==============================================================================
+ */
+void uart_putc(char c)
+{
+        USART_Tx(UART_PORT, c);
+}
+
+/*
+ *==============================================================================
+ * Send string
+ *
+ *  params:
+ *     * string to send
+ *
+ *  returns:
+ *     * number of chars sent
+ *
+ *  comments:
+ *      Sends the characters in a string over the selected UART peripheral until
+ *      the null character is encountered and returns the number of characters
+ *      sent.
+ *
+ *==============================================================================
+ */
+int uart_puts(char *s)
+{
+        int nc = 0;
+        for (; *s == '\0'; *s++)
+        {
+                uart_putc(*s);
+                nc++;
+        }
+        return nc;
+}
+
--- a/sw/uart/uart/uart.h
+++ b/sw/uart/uart/uart.h
+/*
+ *==============================================================================
+ * CERN (BE-CO-HT)
+ * Header file for Freewatch UART library
+ *==============================================================================
+ *
+ * author: Theodor Stana (t.stana@cern.ch)
+ *
+ * date of creation: 2014-07-07
+ *
+ * version: 1.0
+ *
+ * description:
+ *
+ * dependencies:
+ *
+ * references:
+ *
+ *==============================================================================
+ * GNU LESSER GENERAL PUBLIC LICENSE
+ *==============================================================================
+ * This source file 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 2.1 of the License, or (at your
+ * option) any later version. This source 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
+ * source; if not, download it from http://www.gnu.org/licenses/lgpl-2.1.html
+ *==============================================================================
+ * last changes:
+ *    2014-07-07   Theodor Stana     t.stana@cern.ch     File created
+ *==============================================================================
+ * TODO: -
+ *==============================================================================
+ */
+
+#ifndef __UART_H_
+#define __UART_H_
+
+#include "em_device.h"
+
+#include "em_usart.h"
+
+/*============================================================================*/
+/* Defines                                                                    */
+/*============================================================================*/
+#define UART_IRQ_NAME       USART0_RX_IRQHandler
+#define UART_CLK            cmuClock_USART1
+#define UART_IRQN           USART0_RX_IRQn
+#define UART_PORT           USART0
+#define UART_TX             USART_Tx
+#define UART_RX             USART_Rx
+#define UART_LOC            USART_ROUTE_LOCATION_LOC0
+#define UART_TXPORT         gpioPortE
+#define UART_TXPIN          10
+#define UART_RXPORT         gpioPortE
+#define UART_RXPIN          11
+
+/*============================================================================*/
+/* Function prototypes                                                        */
+/*============================================================================*/
+void    uart_init();
+void    uart_putc(char c);
+int     uart_puts(char *s);
+
+#endif // __FRW_UART_H_