Diff: main.cpp

Revision:

0:8a83ba215cd0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Aug 25 15:09:19 2014 +0000
@@ -0,0 +1,247 @@
+/**
+  ******************************************************************************
+  * File Name          : main.c
+  * Date               : 21/08/2014 07:33:41
+  * Description        : Main program body
+  ******************************************************************************
+  *
+  * COPYRIGHT(c) 2014 STMicroelectronics
+  *
+  * 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_hal.h"
+
+/* Private variables ---------------------------------------------------------*/
+ADC_HandleTypeDef hadc1;
+
+UART_HandleTypeDef huart2;
+
+/* USER CODE BEGIN 0 */
+
+#include "mbed.h"
+AnalogIn analog_value(A0);
+
+DigitalOut myled(LED1);
+
+// Calculate the corresponding acquisition measure for a given value in mV
+#define MV(x) ((0xFFF*x)/3300)
+
+/* USER CODE END 0 */
+
+/* Private function prototypes -----------------------------------------------*/
+void SystemClock_Config(void);
+static void MX_GPIO_Init(void);
+static void MX_ADC1_Init(void);
+static void MX_USART2_UART_Init(void);
+
+int main(void)
+{
+
+    /* USER CODE BEGIN 1 */
+
+    /* USER CODE END 1 */
+
+    /* MCU Configuration----------------------------------------------------------*/
+
+    /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
+    HAL_Init();
+
+    /* Configure the system clock */
+    SystemClock_Config();
+
+    /* System interrupt init*/
+    /* Sets the priority grouping field */
+    HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
+    HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
+
+    /* Initialize all configured peripherals */
+    MX_GPIO_Init();
+    MX_ADC1_Init();
+    MX_USART2_UART_Init();
+
+    /* USER CODE BEGIN 2 */
+
+    /* USER CODE END 2 */
+
+    /* USER CODE BEGIN 3 */
+    /* Infinite loop */
+    while (1) {
+        uint16_t meas = analog_value.read_u16(); // Converts and read the analog input value
+        if (meas > MV(1000)) { // If the value is greater than 1000 mV toggle the LED
+            myled = !myled;
+        }
+        wait(1); // 200 ms
+    }
+    /* USER CODE END 3 */
+
+}
+
+/** System Clock Configuration
+*/
+void SystemClock_Config(void)
+{
+
+    RCC_ClkInitTypeDef RCC_ClkInitStruct;
+    RCC_OscInitTypeDef RCC_OscInitStruct;
+
+    __PWR_CLK_ENABLE();
+
+    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
+
+    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
+    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+    RCC_OscInitStruct.HSICalibrationValue = 6;
+    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
+    RCC_OscInitStruct.PLL.PLLM = 16;
+    RCC_OscInitStruct.PLL.PLLN = 336;
+    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
+    RCC_OscInitStruct.PLL.PLLQ = 7;
+    HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1;
+    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
+    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+    HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
+
+}
+
+/* ADC1 init function */
+void MX_ADC1_Init(void)
+{
+
+    ADC_ChannelConfTypeDef sConfig;
+
+    /**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
+    */
+    hadc1.Instance = ADC1;
+    hadc1.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2;
+    hadc1.Init.Resolution = ADC_RESOLUTION12b;
+    hadc1.Init.ScanConvMode = DISABLE;
+    hadc1.Init.ContinuousConvMode = DISABLE;
+    hadc1.Init.DiscontinuousConvMode = DISABLE;
+    hadc1.Init.NbrOfDiscConversion = 1;
+    hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
+    hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
+    hadc1.Init.NbrOfConversion = 1;
+    hadc1.Init.DMAContinuousRequests = DISABLE;
+    hadc1.Init.EOCSelection = EOC_SINGLE_CONV;
+    HAL_ADC_Init(&hadc1);
+
+    /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
+    */
+    sConfig.Channel = ADC_CHANNEL_0;
+    sConfig.Rank = 1;
+    sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
+    HAL_ADC_ConfigChannel(&hadc1, &sConfig);
+
+}
+
+/* USART2 init function */
+void MX_USART2_UART_Init(void)
+{
+
+    huart2.Instance = USART2;
+    huart2.Init.BaudRate = 115200;
+    huart2.Init.WordLength = UART_WORDLENGTH_8B;
+    huart2.Init.StopBits = UART_STOPBITS_1;
+    huart2.Init.Parity = UART_PARITY_NONE;
+    huart2.Init.Mode = UART_MODE_TX_RX;
+    huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
+    huart2.Init.OverSampling = UART_OVERSAMPLING_16;
+    HAL_UART_Init(&huart2);
+
+}
+
+/** Configure pins as
+        * Analog
+        * Input
+        * Output
+        * EVENT_OUT
+        * EXTI
+*/
+void MX_GPIO_Init(void)
+{
+
+    GPIO_InitTypeDef GPIO_InitStruct;
+
+    /* GPIO Ports Clock Enable */
+    __GPIOC_CLK_ENABLE();
+    __GPIOH_CLK_ENABLE();
+    __GPIOA_CLK_ENABLE();
+    __GPIOB_CLK_ENABLE();
+
+    /*Configure GPIO pin : PC13 */
+    GPIO_InitStruct.Pin = GPIO_PIN_13;
+    GPIO_InitStruct.Mode = GPIO_MODE_EVT_RISING;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+
+    /*Configure GPIO pin : PA5 */
+    GPIO_InitStruct.Pin = GPIO_PIN_5;
+    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+}
+
+/* USER CODE BEGIN 4 */
+
+/* USER CODE END 4 */
+
+#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 CODE BEGIN 6 */
+    /* 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) */
+    /* USER CODE END 6 */
+
+}
+
+#endif
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+*/
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/