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-rw-r--r--src/uart-test/Makefile50
-rw-r--r--src/uart-test/main.c32
-rw-r--r--src/uart-test/stm32f4xx_hal_msp.c42
-rw-r--r--src/uart-test/stm32f4xx_it.c201
-rw-r--r--src/uart-test/stm32f4xx_it.h68
-rw-r--r--src/uart-test/stm_init.c268
-rw-r--r--src/uart-test/stm_init.h16
-rw-r--r--src/uart-test/system_stm32f4xx.c270
8 files changed, 947 insertions, 0 deletions
diff --git a/src/uart-test/Makefile b/src/uart-test/Makefile
new file mode 100644
index 0000000..dc4834c
--- /dev/null
+++ b/src/uart-test/Makefile
@@ -0,0 +1,50 @@
+# put your *.o targets here, make should handle the rest!
+SRCS = main.c stm_init.c system_stm32f4xx.c stm32f4xx_it.c stm32f4xx_hal_msp.c
+
+# all the files will be generated with this name
+PROJ_NAME=uart-test
+
+TOPLEVEL=../..
+include $(TOPLEVEL)/common.mk
+
+OBJS = $(SRCS:.c=.o)
+
+###################################################
+
+.PHONY: lib proj
+
+all: lib proj
+
+lib:
+ $(MAKE) -C $(STD_PERIPH_LIB) STDPERIPH_SETTINGS="$(STDPERIPH_SETTINGS)"
+
+
+proj: $(PROJ_NAME).elf
+
+$(PROJ_NAME).elf: $(SRCS)
+ $(CC) $(CFLAGS) $^ -o $@ -L$(STD_PERIPH_LIB) -lstmf4 -L$(LDSCRIPT_INC) -T$(MCU_LINKSCRIPT) -g
+ $(OBJCOPY) -O ihex $(PROJ_NAME).elf $(PROJ_NAME).hex
+ $(OBJCOPY) -O binary $(PROJ_NAME).elf $(PROJ_NAME).bin
+ $(OBJDUMP) -St $(PROJ_NAME).elf >$(PROJ_NAME).lst
+ $(SIZE) $(PROJ_NAME).elf
+
+clean:
+ find ./ -name '*~' | xargs rm -f
+ rm -f *.o
+ rm -f $(PROJ_NAME).elf
+ rm -f $(PROJ_NAME).hex
+ rm -f $(PROJ_NAME).bin
+ rm -f $(PROJ_NAME).map
+ rm -f $(PROJ_NAME).lst
+
+really-clean: clean
+ $(MAKE) -C $(STD_PERIPH_LIB) clean
+
+debug:
+ $(GDB) -ex "target remote localhost:3333" \
+ -ex "set remote hardware-breakpoint-limit 6" \
+ -ex "set remote hardware-watchpoint-limit 4" $(PROJ_NAME).elf
+
+flash-target:
+ $(OPENOCD) -f $(OPENOCD_BOARD_DIR)/$(OPENOCD_PROC_FILE) \
+ -c "program $(PROJ_NAME).elf verify reset"
diff --git a/src/uart-test/main.c b/src/uart-test/main.c
new file mode 100644
index 0000000..77c17f4
--- /dev/null
+++ b/src/uart-test/main.c
@@ -0,0 +1,32 @@
+/*
+ * Test code that just sends the letters 'a' to 'z' over and
+ * over again using USART1.
+ *
+ * Toggles the BLUE LED slowly and the YELLOW LED for every
+ * character sent.
+ */
+#include "stm_init.h"
+
+#define DELAY() HAL_Delay(250)
+
+int
+main()
+{
+ uint8_t c = 'a';
+ uint32_t i = 0;
+
+ stm_init();
+
+ while (1)
+ {
+ HAL_GPIO_TogglePin(LED_PORT, LED_YELLOW);
+
+ HAL_UART_Transmit(&huart1, (uint8_t *) &c, 1, 0xff);
+ DELAY();
+
+ if (c++ == 'z') {
+ c = 'a';
+ HAL_GPIO_TogglePin(LED_PORT, LED_BLUE);
+ }
+ }
+}
diff --git a/src/uart-test/stm32f4xx_hal_msp.c b/src/uart-test/stm32f4xx_hal_msp.c
new file mode 100644
index 0000000..2b1da7e
--- /dev/null
+++ b/src/uart-test/stm32f4xx_hal_msp.c
@@ -0,0 +1,42 @@
+/*
+ * Init/de-init USART1.
+ *
+ * Pins used:
+ *
+ * PA9: USART1_TX
+ * PA10: USART1_RX
+ */
+
+#include "stm32f4xx_hal.h"
+
+
+void HAL_UART_MspInit(UART_HandleTypeDef* huart)
+{
+ GPIO_InitTypeDef GPIO_InitStruct;
+
+ if (huart->Instance == USART1) {
+ /* Peripheral clock enable */
+ __USART1_CLK_ENABLE();
+ GPIO_InitStruct.Pin = GPIO_PIN_9 | GPIO_PIN_10;
+ GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+ GPIO_InitStruct.Pull = GPIO_PULLUP;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
+ GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
+ HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+ /* NVIC for interrupt mode */
+ HAL_NVIC_SetPriority(USART1_IRQn, 0, 1);
+ HAL_NVIC_EnableIRQ(USART1_IRQn);
+ }
+
+}
+
+void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)
+{
+
+ if (huart->Instance == USART1) {
+ __USART1_CLK_DISABLE();
+ HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9 | GPIO_PIN_10);
+ }
+
+}
diff --git a/src/uart-test/stm32f4xx_it.c b/src/uart-test/stm32f4xx_it.c
new file mode 100644
index 0000000..4dcf0e9
--- /dev/null
+++ b/src/uart-test/stm32f4xx_it.c
@@ -0,0 +1,201 @@
+/**
+ ******************************************************************************
+ * @file GPIO/GPIO_IOToggle/Src/stm32f4xx_it.c
+ * @author MCD Application Team
+ * @version V1.0.1
+ * @date 26-February-2014
+ * @brief Main Interrupt Service Routines.
+ * This file provides template for all exceptions handler and
+ * peripherals interrupt service routine.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+ *
+ * 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 of STMicroelectronics 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 HOLDER 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.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_it.h"
+#include "stm_init.h"
+
+/** @addtogroup STM32F4xx_HAL_Examples
+ * @{
+ */
+
+/** @addtogroup GPIO_IOToggle
+ * @{
+ */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+
+/* UART handler declared in "stm_init.h" file */
+//extern UART_HandleTypeDef huart2;
+
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/******************************************************************************/
+/* Cortex-M4 Processor Exceptions Handlers */
+/******************************************************************************/
+
+/**
+ * @brief This function handles NMI exception.
+ * @param None
+ * @retval None
+ */
+void NMI_Handler(void)
+{
+}
+
+/**
+ * @brief This function handles Hard Fault exception.
+ * @param None
+ * @retval None
+ */
+void HardFault_Handler(void)
+{
+ /* Go to infinite loop when Hard Fault exception occurs */
+ while (1)
+ {
+ }
+}
+
+/**
+ * @brief This function handles Memory Manage exception.
+ * @param None
+ * @retval None
+ */
+void MemManage_Handler(void)
+{
+ /* Go to infinite loop when Memory Manage exception occurs */
+ while (1)
+ {
+ }
+}
+
+/**
+ * @brief This function handles Bus Fault exception.
+ * @param None
+ * @retval None
+ */
+void BusFault_Handler(void)
+{
+ /* Go to infinite loop when Bus Fault exception occurs */
+ while (1)
+ {
+ }
+}
+
+/**
+ * @brief This function handles Usage Fault exception.
+ * @param None
+ * @retval None
+ */
+void UsageFault_Handler(void)
+{
+ /* Go to infinite loop when Usage Fault exception occurs */
+ while (1)
+ {
+ }
+}
+
+/**
+ * @brief This function handles SVCall exception.
+ * @param None
+ * @retval None
+ */
+void SVC_Handler(void)
+{
+}
+
+/**
+ * @brief This function handles Debug Monitor exception.
+ * @param None
+ * @retval None
+ */
+void DebugMon_Handler(void)
+{
+}
+
+/**
+ * @brief This function handles PendSVC exception.
+ * @param None
+ * @retval None
+ */
+void PendSV_Handler(void)
+{
+}
+
+/**
+ * @brief This function handles SysTick Handler.
+ * @param None
+ * @retval None
+ */
+void SysTick_Handler(void)
+{
+ HAL_IncTick();
+}
+
+/******************************************************************************/
+/* STM32F4xx Peripherals Interrupt Handlers */
+/* Add here the Interrupt Handler for the used peripheral(s) (PPP), for the */
+/* available peripheral interrupt handler's name please refer to the startup */
+/* file (startup_stm32f4xx.s). */
+/******************************************************************************/
+
+/**
+ * @brief This function handles UART interrupt request.
+ * @param None
+ * @retval None
+ * @Note This function is redefined in "main.h" and related to DMA stream
+ * used for USART data transmission
+ */
+void USART1_IRQHandler(void)
+{
+ HAL_UART_IRQHandler(&huart1);
+}
+
+/**
+ * @brief This function handles PPP interrupt request.
+ * @param None
+ * @retval None
+ */
+/*void PPP_IRQHandler(void)
+{
+}*/
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/src/uart-test/stm32f4xx_it.h b/src/uart-test/stm32f4xx_it.h
new file mode 100644
index 0000000..6edba3c
--- /dev/null
+++ b/src/uart-test/stm32f4xx_it.h
@@ -0,0 +1,68 @@
+/**
+ ******************************************************************************
+ * @file GPIO/GPIO_IOToggle/Inc/stm32f4xx_it.h
+ * @author MCD Application Team
+ * @version V1.0.1
+ * @date 26-February-2014
+ * @brief This file contains the headers of the interrupt handlers.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+ *
+ * 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 of STMicroelectronics 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 HOLDER 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.
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F4xx_IT_H
+#define __STM32F4xx_IT_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions ------------------------------------------------------- */
+
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void MemManage_Handler(void);
+void BusFault_Handler(void);
+void UsageFault_Handler(void);
+void SVC_Handler(void);
+void DebugMon_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F4xx_IT_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/src/uart-test/stm_init.c b/src/uart-test/stm_init.c
new file mode 100644
index 0000000..ad39080
--- /dev/null
+++ b/src/uart-test/stm_init.c
@@ -0,0 +1,268 @@
+/**
+ ******************************************************************************
+ * @file GPIO/GPIO_IOToggle/Src/main.c
+ * @author MCD Application Team
+ * @version V1.0.1
+ * @date 26-February-2014
+ * @brief This example describes how to configure and use GPIOs through
+ * the STM32F4xx HAL API.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+ *
+ * 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 of STMicroelectronics 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 HOLDER 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.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm_init.h"
+
+UART_HandleTypeDef huart1;
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+
+#define UART1_BAUD_RATE 460800
+
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+
+static GPIO_InitTypeDef GPIO_InitStruct;
+
+/* Private function prototypes -----------------------------------------------*/
+static void SystemClock_Config(void);
+static void Error_Handler(void);
+static void MX_GPIO_Init(void);
+static void MX_USART1_UART_Init(void);
+/* Private functions ---------------------------------------------------------*/
+
+/**
+ * @brief Main program
+ * @param None
+ * @retval None
+ */
+void stm_init(void)
+{
+ /* Generic STM32 initialization.
+
+ To proceed, 3 steps are required: */
+
+ /* STM32F4xx HAL library initialization:
+ - Configure the Flash prefetch, instruction and Data caches
+ - Configure the Systick to generate an interrupt each 1 msec
+ - Set NVIC Group Priority to 4
+ - Global MSP (MCU Support Package) initialization
+ */
+ HAL_Init();
+
+ /* Configure the system clock */
+ SystemClock_Config();
+
+ /* System interrupt init*/
+ /* Sets the priority grouping field */
+ HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_0);
+ HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
+
+ /* Initialize all configured peripherals */
+ MX_GPIO_Init();
+ MX_USART1_UART_Init();
+}
+
+
+/**
+ * @brief System Clock Configuration
+ * The system Clock is configured as follow :
+ * System Clock source = PLL (HSE)
+ * SYSCLK(Hz) = 42000000
+ * HCLK(Hz) = 42000000
+ * AHB Prescaler = 1
+ * APB1 Prescaler = 1
+ * APB2 Prescaler = 1
+ * HSI Frequency(Hz) = 16000000
+ * PLL_M = 8
+ * PLL_N = 336
+ * PLL_P = 8
+ * PLL_Q = 7 (unused)
+ * VDD(V) = 3.3
+ * Main regulator output voltage = Scale2 mode
+ * Flash Latency(WS) = 1
+ * @param None
+ * @retval None
+ */
+static void SystemClock_Config(void)
+{
+ RCC_ClkInitTypeDef RCC_ClkInitStruct;
+ RCC_OscInitTypeDef RCC_OscInitStruct;
+
+ /* Enable Power Control clock */
+ __PWR_CLK_ENABLE();
+
+ /* The voltage scaling allows optimizing the power consumption when the device is
+ clocked below the maximum system frequency, to update the voltage scaling value
+ regarding system frequency refer to product datasheet. */
+ __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
+
+ /* Enable HSE Oscillator and activate PLL with HSE as source.
+ *
+ * With 8 MHz HSE oscillator, M=/8, N=*336, P=/8 gives 42 MHz SYSCLK.
+ * Divider Q is unused in this configuration.
+ */
+ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+ RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+ RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+ RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+ RCC_OscInitStruct.PLL.PLLM = 8;
+ RCC_OscInitStruct.PLL.PLLN = 336;
+ RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV8;
+ RCC_OscInitStruct.PLL.PLLQ = 7;
+ if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
+ {
+ Error_Handler();
+ }
+
+ /* Select PLL as system clock source */
+ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;
+ RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+ RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; /* AHB prescaler */
+ RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; /* APB1 prescaler /1 gives 42 MHz APB1 */
+ RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; /* APB2 prescaler /1 gives 42 MHz APB2 */
+ if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
+ {
+ Error_Handler();
+ }
+
+ /* Set up HSE sourced (8 MHz) MCO1 */
+ HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSE, RCC_MCODIV_1);
+
+ /* Set up SYSCLK sourced (42 MHz) MCO2 */
+ HAL_RCC_MCOConfig(RCC_MCO2, RCC_MCO2SOURCE_SYSCLK, RCC_MCODIV_1);
+}
+
+
+/** Configure pins as
+
+ PB12 ------> GREEN LED
+ PB13 ------> YELLOW LED
+ PB14 ------> GREEN lED
+ PB15 ------> BLUE LED
+ PC9 ------> MCO_2
+ PA8 ------> MCO_1
+*/
+void MX_GPIO_Init(void)
+{
+ /* GPIO Ports Clock Enable */
+ __GPIOA_CLK_ENABLE();
+ __GPIOB_CLK_ENABLE();
+ __GPIOC_CLK_ENABLE();
+
+ /*Configure LED GPIO pins PB12==red, PB13==yellow, PB14==green, PB15==blue */
+ GPIO_InitStruct.Pin = GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
+ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
+ HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+ /*Configure GPIO pin : PC9 (RCC_MCO_2) */
+ GPIO_InitStruct.Pin = GPIO_PIN_9;
+ GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
+ GPIO_InitStruct.Alternate = GPIO_AF0_MCO;
+ HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+
+ /*Configure GPIO pin : PA8 (RCC_MCO_1) */
+ GPIO_InitStruct.Pin = GPIO_PIN_8;
+ GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
+ GPIO_InitStruct.Alternate = GPIO_AF0_MCO;
+ HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+}
+
+/* USART1 init function
+ *
+ * USART1 uses PA9 and PA10.
+ */
+void MX_USART1_UART_Init(void)
+{
+
+ huart1.Instance = USART1;
+ huart1.Init.BaudRate = UART1_BAUD_RATE;
+ huart1.Init.WordLength = UART_WORDLENGTH_8B;
+ huart1.Init.StopBits = UART_STOPBITS_1;
+ huart1.Init.Parity = UART_PARITY_NONE;
+ huart1.Init.Mode = UART_MODE_TX_RX;
+ huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
+ huart1.Init.OverSampling = UART_OVERSAMPLING_16;
+
+ if(HAL_UART_Init(&huart1) != HAL_OK) {
+ /* Initialization Error */
+ Error_Handler();
+ }
+
+}
+
+/**
+ * @brief This function is executed in case of error occurrence.
+ * @param None
+ * @retval None
+ */
+static void Error_Handler(void)
+{
+ HAL_GPIO_WritePin(LED_PORT, LED_RED, GPIO_PIN_SET);
+ while(1) { ; }
+}
+
+#ifdef USE_FULL_ASSERT
+
+/**
+ * @brief Reports the name of the source file and the source line number
+ * where the assert_param error has occurred.
+ * @param file: pointer to the source file name
+ * @param line: assert_param error line source number
+ * @retval None
+ */
+void assert_failed(uint8_t* file, uint32_t line)
+{
+ /* User can add his own implementation to report the file name and line number,
+ ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+
+ /* Infinite loop */
+ while (1)
+ {
+ }
+}
+#endif
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/src/uart-test/stm_init.h b/src/uart-test/stm_init.h
new file mode 100644
index 0000000..e1cdfb8
--- /dev/null
+++ b/src/uart-test/stm_init.h
@@ -0,0 +1,16 @@
+#ifndef __STM_INIT_H
+#define __STM_INIT_H
+
+#include "stm32f4xx_hal.h"
+
+#define LED_PORT GPIOB
+#define LED_RED GPIO_PIN_12
+#define LED_YELLOW GPIO_PIN_13
+#define LED_GREEN GPIO_PIN_14
+#define LED_BLUE GPIO_PIN_15
+
+extern UART_HandleTypeDef huart1;
+extern void stm_init(void);
+
+
+#endif /* __STM_INIT_H */
diff --git a/src/uart-test/system_stm32f4xx.c b/src/uart-test/system_stm32f4xx.c
new file mode 100644
index 0000000..3068a90
--- /dev/null
+++ b/src/uart-test/system_stm32f4xx.c
@@ -0,0 +1,270 @@
+/**
+ ******************************************************************************
+ * @file system_stm32f4xx.c
+ * @author MCD Application Team
+ * @version V1.0.1
+ * @date 26-February-2014
+ * @brief CMSIS Cortex-M4 Device Peripheral Access Layer System Source File.
+ *
+ * This file provides two functions and one global variable to be called from
+ * user application:
+ * - SystemInit(): This function is called at startup just after reset and
+ * before branch to main program. This call is made inside
+ * the "startup_stm32f4xx.s" file.
+ *
+ * - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
+ * by the user application to setup the SysTick
+ * timer or configure other parameters.
+ *
+ * - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
+ * be called whenever the core clock is changed
+ * during program execution.
+ *
+ *
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
+ *
+ * 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 of STMicroelectronics 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 HOLDER 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.
+ *
+ ******************************************************************************
+ */
+
+/** @addtogroup CMSIS
+ * @{
+ */
+
+/** @addtogroup stm32f4xx_system
+ * @{
+ */
+
+/** @addtogroup STM32F4xx_System_Private_Includes
+ * @{
+ */
+
+#include "stm32f4xx_hal.h"
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F4xx_System_Private_TypesDefinitions
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F4xx_System_Private_Defines
+ * @{
+ */
+
+/************************* Miscellaneous Configuration ************************/
+
+/*!< Uncomment the following line if you need to relocate your vector Table in
+ Internal SRAM. */
+/* #define VECT_TAB_SRAM */
+#define VECT_TAB_OFFSET 0x00 /*!< Vector Table base offset field.
+ This value must be a multiple of 0x200. */
+/******************************************************************************/
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F4xx_System_Private_Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F4xx_System_Private_Variables
+ * @{
+ */
+ /* This variable is updated in three ways:
+ 1) by calling CMSIS function SystemCoreClockUpdate()
+ 2) by calling HAL API function HAL_RCC_GetHCLKFreq()
+ 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
+ Note: If you use this function to configure the system clock; then there
+ is no need to call the 2 first functions listed above, since SystemCoreClock
+ variable is updated automatically.
+ */
+ uint32_t SystemCoreClock = 16000000;
+ __I uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F4xx_System_Private_FunctionPrototypes
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F4xx_System_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Setup the microcontroller system
+ * Initialize the FPU setting, vector table location and External memory
+ * configuration.
+ * @param None
+ * @retval None
+ */
+void SystemInit(void)
+{
+ /* FPU settings ------------------------------------------------------------*/
+ #if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
+ SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); /* set CP10 and CP11 Full Access */
+ #endif
+ /* Reset the RCC clock configuration to the default reset state ------------*/
+ /* Set HSION bit */
+ RCC->CR |= (uint32_t)0x00000001;
+
+ /* Reset CFGR register */
+ RCC->CFGR = 0x00000000;
+
+ /* Reset HSEON, CSSON and PLLON bits */
+ RCC->CR &= (uint32_t)0xFEF6FFFF;
+
+ /* Reset PLLCFGR register */
+ RCC->PLLCFGR = 0x24003010;
+
+ /* Reset HSEBYP bit */
+ RCC->CR &= (uint32_t)0xFFFBFFFF;
+
+ /* Disable all interrupts */
+ RCC->CIR = 0x00000000;
+
+ /* Configure the Vector Table location add offset address ------------------*/
+#ifdef VECT_TAB_SRAM
+ SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */
+#else
+ SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */
+#endif
+}
+
+/**
+ * @brief Update SystemCoreClock variable according to Clock Register Values.
+ * The SystemCoreClock variable contains the core clock (HCLK), it can
+ * be used by the user application to setup the SysTick timer or configure
+ * other parameters.
+ *
+ * @note Each time the core clock (HCLK) changes, this function must be called
+ * to update SystemCoreClock variable value. Otherwise, any configuration
+ * based on this variable will be incorrect.
+ *
+ * @note - The system frequency computed by this function is not the real
+ * frequency in the chip. It is calculated based on the predefined
+ * constant and the selected clock source:
+ *
+ * - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
+ *
+ * - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
+ *
+ * - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
+ * or HSI_VALUE(*) multiplied/divided by the PLL factors.
+ *
+ * (*) HSI_VALUE is a constant defined in stm32f4xx_hal_conf.h file (default value
+ * 16 MHz) but the real value may vary depending on the variations
+ * in voltage and temperature.
+ *
+ * (**) HSE_VALUE is a constant defined in stm32f4xx_hal_conf.h file (its value
+ * depends on the application requirements), user has to ensure that HSE_VALUE
+ * is same as the real frequency of the crystal used. Otherwise, this function
+ * may have wrong result.
+ *
+ * - The result of this function could be not correct when using fractional
+ * value for HSE crystal.
+ *
+ * @param None
+ * @retval None
+ */
+void SystemCoreClockUpdate(void)
+{
+ uint32_t tmp = 0, pllvco = 0, pllp = 2, pllsource = 0, pllm = 2;
+
+ /* Get SYSCLK source -------------------------------------------------------*/
+ tmp = RCC->CFGR & RCC_CFGR_SWS;
+
+ switch (tmp)
+ {
+ case 0x00: /* HSI used as system clock source */
+ SystemCoreClock = HSI_VALUE;
+ break;
+ case 0x04: /* HSE used as system clock source */
+ SystemCoreClock = HSE_VALUE;
+ break;
+ case 0x08: /* PLL used as system clock source */
+
+ /* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL_M) * PLL_N
+ SYSCLK = PLL_VCO / PLL_P
+ */
+ pllsource = (RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) >> 22;
+ pllm = RCC->PLLCFGR & RCC_PLLCFGR_PLLM;
+
+ if (pllsource != 0)
+ {
+ /* HSE used as PLL clock source */
+ pllvco = (HSE_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6);
+ }
+ else
+ {
+ /* HSI used as PLL clock source */
+ pllvco = (HSI_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6);
+ }
+
+ pllp = (((RCC->PLLCFGR & RCC_PLLCFGR_PLLP) >>16) + 1 ) *2;
+ SystemCoreClock = pllvco/pllp;
+ break;
+ default:
+ SystemCoreClock = HSI_VALUE;
+ break;
+ }
+ /* Compute HCLK frequency --------------------------------------------------*/
+ /* Get HCLK prescaler */
+ tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)];
+ /* HCLK frequency */
+ SystemCoreClock >>= tmp;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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