21:07:56 **** Incremental Build of configuration Debug for project projeto ****
make all 
Building file: ../src/main.c
Invoking: Cross ARM C Compiler
arm-none-eabi-gcc -mcpu=cortex-m0 -mthumb -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra  -g3 -DDEBUG -DUSE_FULL_ASSERT -DSTM32F072 -DUSE_STDPERIPH_DRIVER -DHSE_VALUE=48000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f0-stdperiph" -std=gnu11 -MMD -MP -MF"src/main.d" -MT"src/main.o" -c -o "src/main.o" "../src/main.c"
Finished building: ../src/main.c
 
Building target: projeto.elf
Invoking: Cross ARM C++ Linker
arm-none-eabi-g++ -mcpu=cortex-m0 -mthumb -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra  -g3 -T mem.ld -T libs.ld -T sections.ld -nostartfiles -Xlinker --gc-sections -L"../ldscripts" -Wl,-Map,"projeto.map" --specs=nano.specs -o "projeto.elf"  ./system/src/stm32f0-stdperiph/stm32f0xx_gpio.o ./system/src/stm32f0-stdperiph/stm32f0xx_rcc.o  ./system/src/newlib/_cxx.o ./system/src/newlib/_exit.o ./system/src/newlib/_sbrk.o ./system/src/newlib/_startup.o ./system/src/newlib/_syscalls.o ./system/src/newlib/assert.o  ./system/src/diag/Trace.o ./system/src/diag/trace_impl.o  ./system/src/cortexm/_initialize_hardware.o ./system/src/cortexm/_reset_hardware.o ./system/src/cortexm/exception_handlers.o  ./system/src/cmsis/system_stm32f0xx.o ./system/src/cmsis/vectors_stm32f0xx.o  ./src/BlinkLed.o ./src/Timer.o ./src/_write.o ./src/main.o   
./src/main.o: In function `main':
/Users/Marcelo/Dropbox/Projetos/Eclipse/projeto/Debug/../src/main.c:115: undefined reference to `USART_Init'
collect2: error: ld returned 1 exit status
make: *** [projeto.elf] Error 1

21:07:56 Build Finished (took 286ms) 

//
// This file is part of the GNU ARM Eclipse distribution.
// Copyright (c) 2014 Liviu Ionescu.
//

// ----------------------------------------------------------------------------


#include <stdio.h>
#include <stm32f0xx_conf.h>
#include <stm32f0xx_usart.h>
#include "diag/Trace.h"

#include "Timer.h"
#include "BlinkLed.h"

// ----------------------------------------------------------------------------
//
// STM32F0 led blink sample (trace via NONE).
//
// In debug configurations, demonstrate how to print a greeting message
// on the trace device. In release configurations the message is
// simply discarded.
//
// To demonstrate POSIX retargetting, reroute the STDOUT and STDERR to the
// trace device and display messages on both of them.
//
// Then demonstrates how to blink a led with 1Hz, using a
// continuous loop and SysTick delays.
//
// On DEBUG, the uptime in seconds is also displayed on the trace device.
//
// Trace support is enabled by adding the TRACE macro definition.
// By default the trace messages are forwarded to the NONE output,
// but can be rerouted to any device or completely suppressed, by
// changing the definitions required in system/src/diag/trace_impl.c
// (currently OS_USE_TRACE_ITM, OS_USE_TRACE_SEMIHOSTING_DEBUG/_STDOUT).
//
// The external clock frequency is specified as a preprocessor definition
// passed to the compiler via a command line option (see the 'C/C++ General' ->
// 'Paths and Symbols' -> the 'Symbols' tab, if you want to change it).
// The value selected during project creation was HSE_VALUE=48000000.
//
// Note: The default clock settings take the user defined HSE_VALUE and try
// to reach the maximum possible system clock. For the default 8MHz input
// the result is guaranteed, but for other values it might not be possible,
// so please adjust the PLL settings in system/src/cmsis/system_stm32f0xx.c
//

// ----- Timing definitions -------------------------------------------------

// Keep the LED on for 2/3 of a second.
#define BLINK_ON_TICKS  (TIMER_FREQUENCY_HZ * 2 / 3)
#define BLINK_OFF_TICKS (TIMER_FREQUENCY_HZ - BLINK_ON_TICKS)

// ----- main() ---------------------------------------------------------------

// Sample pragmas to cope with warnings. Please note the related line at
// the end of this function, used to pop the compiler diagnostics status.
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#pragma GCC diagnostic ignored "-Wmissing-declarations"
#pragma GCC diagnostic ignored "-Wreturn-type"

int
main(int argc, char* argv[])
{
  // By customising __initialize_args() it is possible to pass arguments,
  // for example when running tests with semihosting you can pass various
  // options to the test.
  // trace_dump_args(argc, argv);

  // Send a greeting to the trace device (skipped on Release).
  trace_puts("Hello ARM World!");

  // The standard output and the standard error should be forwarded to
  // the trace device. For this to work, a redirection in _write.c is
  // required.
  puts("Standard output message.");
  fprintf(stderr, "Standard error message.\n");

  // At this stage the system clock should have already been configured
  // at high speed.
  trace_printf("System clock: %uHz\n", SystemCoreClock);

  timer_start();

  blink_led_init();
  
  uint32_t seconds = 0;

  USART_InitTypeDef USART_InitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);

    GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_1);
    GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_1);

    /* Configure USART2 pins:  Rx and Tx ----------------------------*/
    GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_2 | GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    USART_InitStructure.USART_BaudRate = 9600;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
    USART_Init(USART2, &USART_InitStructure);

//    USART_Cmd(USART2,ENABLE);



  // Infinite loop
  while (1)
    {
      blink_led_on();
      timer_sleep(BLINK_ON_TICKS);

      blink_led_off();
      timer_sleep(BLINK_OFF_TICKS);

      ++seconds;

      // Count seconds on the trace device.
      trace_printf("Second %u\n", seconds);
    }
  // Infinite loop, never return.
}

#pragma GCC diagnostic pop

// ----------------------------------------------------------------------------