Revision 0:f11903264b5e, committed 2017-04-21

Comitter:

davide.aliprandi@st.com

Date:

Fri Apr 21 10:22:24 2017 +0200

Child:

1:d75cd2582664

Commit message:

Added files.

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/drivers/FrequencyDivider.cpp	Fri Apr 21 10:22:24 2017 +0200
@@ -0,0 +1,12 @@
+#include "drivers/FrequencyDivider.h"
+#include "stm_divider_api.h"
+
+FrequencyDivider::FrequencyDivider()
+{
+    ST_Timer_Init();
+}
+
+void FrequencyDivider::start(void)
+{
+    ST_Timer_Start();
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/drivers/FrequencyDivider.h	Fri Apr 21 10:22:24 2017 +0200
@@ -0,0 +1,28 @@
+#ifndef MBED_FREQUENCY_DIVIDER_H
+#define MBED_FREQUENCY_DIVIDER_H
+
+#include "platform/platform.h"
+#include "hal/stm_i2s_api.h"
+
+
+/** A frequency divider class.
+ *
+ * @Note Synchronization level: No Synchronization.
+ *
+ */
+class FrequencyDivider {
+
+public:
+
+    /**
+     * Creating a frequency divider.
+     */
+    FrequencyDivider();
+
+    /**
+     * Start dividing a frequency.
+     */
+    void start(void);
+};
+
+#endif // MBED_FREQUENCY_DIVIDER_H

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hal/stm_divider_api.h	Fri Apr 21 10:22:24 2017 +0200
@@ -0,0 +1,75 @@
+/**
+ ******************************************************************************
+ * @file    stm_divider_api.h
+ * @author  AST / Software Platforms and Cloud
+ * @version V1.0
+ * @date    November 8th, 2016
+ * @brief   Utilities header file for the X_NUCLEO_CCA02M1 expansion board.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2015 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 __DIVIDER_H
+#define __DIVIDER_H
+
+/* Includes ------------------------------------------------------------------*/
+
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif 
+
+/* Definitions ---------------------------------------------------------------*/
+
+#define AUDIO_IN_TIMER                                     TIM3
+#define AUDIO_IN_TIMER_CLK_ENABLE()                        __TIM3_CLK_ENABLE()  
+#define AUDIO_IN_TIMER_CHOUT_AF                            GPIO_AF2_TIM3
+#define AUDIO_IN_TIMER_CHOUT_PIN                           GPIO_PIN_5
+#define AUDIO_IN_TIMER_CHOUT_GPIO_PORT                     GPIOB
+#define AUDIO_IN_TIMER_CHOUT_GPIO_PORT_CLK_ENABLE()        __GPIOB_CLK_ENABLE()  
+#define AUDIO_IN_TIMER_CHIN_AF                             GPIO_AF2_TIM3
+#define AUDIO_IN_TIMER_CHIN_PIN                            GPIO_PIN_4
+#define AUDIO_IN_TIMER_CHIN_GPIO_PORT                      GPIOB
+#define AUDIO_IN_TIMER_CHIN_GPIO_PORT_CLK_ENABLE()         __GPIOB_CLK_ENABLE()   
+
+
+/* Functions -----------------------------------------------------------------*/
+
+uint8_t ST_Timer_Init(void);
+uint8_t ST_Timer_Start(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed_lib.json	Fri Apr 21 10:22:24 2017 +0200
@@ -0,0 +1,8 @@
+{
+    "name": "stm-frequency-divider",
+    	"target_overrides": {
+    		"NUCLEO_F401RE": {
+			"target.device_has_add": ["FREQUENCY_DIVIDER"]
+		}
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_STM/TARGET_STM32F4/TARGET_NUCLEO_F401RE/stm_divider_api.c	Fri Apr 21 10:22:24 2017 +0200
@@ -0,0 +1,144 @@
+/**
+ ******************************************************************************
+ * @file    stm_divider_api.c
+ * @author  AST / Software Platforms and Cloud
+ * @version V1.0
+ * @date    November 8th, 2016
+ * @brief   Utilities header file for the X_NUCLEO_CCA02M1 expansion board.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2015 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 "cmsis.h"
+#include "stm_divider_api.h"
+#include "component_def.h"
+
+
+/* Variables -----------------------------------------------------------------*/
+
+static TIM_HandleTypeDef TimDividerHandle;
+static TIM_SlaveConfigTypeDef sSlaveConfig;
+static TIM_IC_InitTypeDef sICConfig;
+static TIM_OC_InitTypeDef sOCConfig;
+
+
+/* Functions -----------------------------------------------------------------*/
+
+/**
+ * @brief  Initializing timer.
+ * @param  None.
+ * @retval 0 in case of success, -1 otherwise.
+ */
+uint8_t ST_Timer_Init(void)
+{
+  GPIO_InitTypeDef GPIO_InitStruct;
+  
+  /* Enable AUDIO_TIMER clock*/
+  AUDIO_IN_TIMER_CLK_ENABLE();
+  AUDIO_IN_TIMER_CHOUT_GPIO_PORT_CLK_ENABLE();
+  AUDIO_IN_TIMER_CHIN_GPIO_PORT_CLK_ENABLE();
+  
+  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+  GPIO_InitStruct.Pull = GPIO_PULLUP;
+  GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
+  
+  GPIO_InitStruct.Alternate = AUDIO_IN_TIMER_CHIN_AF;
+  GPIO_InitStruct.Pin = AUDIO_IN_TIMER_CHIN_PIN;
+  HAL_GPIO_Init(AUDIO_IN_TIMER_CHIN_GPIO_PORT, &GPIO_InitStruct);
+  
+  GPIO_InitStruct.Alternate = AUDIO_IN_TIMER_CHOUT_AF;
+  GPIO_InitStruct.Pin = AUDIO_IN_TIMER_CHOUT_PIN;
+  HAL_GPIO_Init(AUDIO_IN_TIMER_CHOUT_GPIO_PORT, &GPIO_InitStruct);
+  
+  TimDividerHandle.Instance = AUDIO_IN_TIMER;
+  
+  /* Configure the Input: channel_1 */
+  sICConfig.ICPolarity  = TIM_ICPOLARITY_RISING;
+  sICConfig.ICSelection = TIM_ICSELECTION_DIRECTTI;
+  sICConfig.ICPrescaler = TIM_ICPSC_DIV1;
+  sICConfig.ICFilter = 0;
+  if (HAL_TIM_IC_ConfigChannel(&TimDividerHandle, &sICConfig, TIM_CHANNEL_1) != HAL_OK)
+  {
+    return -1;
+  }
+  
+  /* Configure TIM1 in Gated Slave mode for the external trigger (Filtered Timer
+  Input 1) */
+  sSlaveConfig.InputTrigger = TIM_TS_TI1FP1;
+  sSlaveConfig.SlaveMode    = TIM_SLAVEMODE_EXTERNAL1;
+  if (HAL_TIM_SlaveConfigSynchronization(&TimDividerHandle, &sSlaveConfig) != HAL_OK)
+  {
+    return -1;
+  }
+  
+  /* Initialize TIM3 peripheral in PWM mode*/
+  TimDividerHandle.Init.Period            = 1;
+  TimDividerHandle.Init.Prescaler         = 0;
+  TimDividerHandle.Init.ClockDivision     = 0;
+  TimDividerHandle.Init.CounterMode       = TIM_COUNTERMODE_UP;
+  TimDividerHandle.Init.RepetitionCounter = 0;
+  if (HAL_TIM_PWM_Init(&TimDividerHandle) != HAL_OK)
+  {
+    return -1;
+  }
+  
+  /* Configure the PWM_channel_1  */
+  sOCConfig.OCMode     = TIM_OCMODE_PWM1;
+  sOCConfig.OCPolarity = TIM_OCPOLARITY_HIGH;
+  sOCConfig.Pulse = 1;
+  if (HAL_TIM_PWM_ConfigChannel(&TimDividerHandle, &sOCConfig, TIM_CHANNEL_2) != HAL_OK)
+  {
+    return -1;
+  }
+
+  return 0;
+}
+
+/**
+* @brief  Starting timer.
+* @param  None.
+* @retval 0 in case of success, -1 otherwise.
+*/
+uint8_t ST_Timer_Start(void)
+{
+  if (HAL_TIM_IC_Start(&TimDividerHandle, TIM_CHANNEL_1) != HAL_OK)
+  {
+    return -1;
+  }
+  /* Start the Output Compare */
+  if (HAL_TIM_OC_Start(&TimDividerHandle, TIM_CHANNEL_2) != HAL_OK)
+  {
+    return -1;
+  }
+  
+  return 0;
+}