From afbb4cc73c44b6321cae39dbe46b97155805097d Mon Sep 17 00:00:00 2001 From: Trygve Laugstøl Date: Sun, 13 Dec 2015 21:03:11 +0100 Subject: wip --- .../DAC/OneChannelDMA_Escalator/main.c | 212 +++++++++++++++++++++ 1 file changed, 212 insertions(+) create mode 100644 tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/OneChannelDMA_Escalator/main.c (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/OneChannelDMA_Escalator/main.c') diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/OneChannelDMA_Escalator/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/OneChannelDMA_Escalator/main.c new file mode 100644 index 0000000..e445ebb --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/OneChannelDMA_Escalator/main.c @@ -0,0 +1,212 @@ +/** + ****************************************************************************** + * @file DAC/OneChannelDMA_Escalator/main.c + * @author MCD Application Team + * @version V3.5.0 + * @date 08-April-2011 + * @brief Main program body. + ****************************************************************************** + * @attention + * + * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS + * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE + * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY + * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING + * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE + * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. + * + *

© COPYRIGHT 2011 STMicroelectronics

+ ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x.h" + +/** @addtogroup STM32F10x_StdPeriph_Examples + * @{ + */ + +/** @addtogroup DAC_OneChannelDMA_Escalator + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +#define DAC_DHR8R1_Address 0x40007410 + +/* Init Structure definition */ +DAC_InitTypeDef DAC_InitStructure; +DMA_InitTypeDef DMA_InitStructure; + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +const uint8_t Escalator8bit[6] = {0x0, 0x33, 0x66, 0x99, 0xCC, 0xFF}; + +/* Private function prototypes -----------------------------------------------*/ +void RCC_Configuration(void); +void GPIO_Configuration(void); +void Delay(__IO uint32_t nCount); + +/* Private functions ---------------------------------------------------------*/ + +/** + * @brief Main program. + * @param None + * @retval None + */ +int main(void) +{ + /*!< At this stage the microcontroller clock setting is already configured, + this is done through SystemInit() function which is called from startup + file (startup_stm32f10x_xx.s) before to branch to application main. + To reconfigure the default setting of SystemInit() function, refer to + system_stm32f10x.c file + */ + + /* System Clocks Configuration */ + RCC_Configuration(); + + /* Once the DAC channel is enabled, the corresponding GPIO pin is automatically + connected to the DAC converter. In order to avoid parasitic consumption, + the GPIO pin should be configured in analog */ + GPIO_Configuration(); + + /* TIM6 Configuration */ + TIM_PrescalerConfig(TIM6, 0xF, TIM_PSCReloadMode_Update); + TIM_SetAutoreload(TIM6, 0xFF); + /* TIM6 TRGO selection */ + TIM_SelectOutputTrigger(TIM6, TIM_TRGOSource_Update); + + /* DAC channel1 Configuration */ + DAC_InitStructure.DAC_Trigger = DAC_Trigger_T6_TRGO; + DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None; + DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable; + DAC_Init(DAC_Channel_1, &DAC_InitStructure); + +#if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL + /* DMA2 channel3 configuration */ + DMA_DeInit(DMA2_Channel3); +#else + /* DMA1 channel3 configuration */ + DMA_DeInit(DMA1_Channel3); +#endif + + DMA_InitStructure.DMA_PeripheralBaseAddr = DAC_DHR8R1_Address; + DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&Escalator8bit; + DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST; + DMA_InitStructure.DMA_BufferSize = 6; + DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; + DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; + DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; + DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; + DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; + DMA_InitStructure.DMA_Priority = DMA_Priority_High; + DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; + +#if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL + DMA_Init(DMA2_Channel3, &DMA_InitStructure); + /* Enable DMA2 Channel3 */ + DMA_Cmd(DMA2_Channel3, ENABLE); +#else + DMA_Init(DMA1_Channel3, &DMA_InitStructure); + /* Enable DMA1 Channel3 */ + DMA_Cmd(DMA1_Channel3, ENABLE); +#endif + + /* Enable DAC Channel1: Once the DAC channel1 is enabled, PA.04 is + automatically connected to the DAC converter. */ + DAC_Cmd(DAC_Channel_1, ENABLE); + + /* Enable DMA for DAC Channel1 */ + DAC_DMACmd(DAC_Channel_1, ENABLE); + + /* TIM6 enable counter */ + TIM_Cmd(TIM6, ENABLE); + + while (1) + { + } +} + + +/** + * @brief Configures the different system clocks. + * @param None + * @retval None + */ +void RCC_Configuration(void) +{ + /* Enable peripheral clocks ------------------------------------------------*/ +#if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL + /* DMA2 clock enable */ + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE); +#else + /* DMA1 clock enable */ + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); +#endif + /* GPIOA Periph clock enable */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); + /* DAC Periph clock enable */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE); + /* TIM6 Periph clock enable */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6, ENABLE); +} + +/** + * @brief Configures the different GPIO ports. + * @param None + * @retval None + */ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + + /* Once the DAC channel is enabled, the corresponding GPIO pin is automatically + connected to the DAC converter. In order to avoid parasitic consumption, + the GPIO pin should be configured in analog */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; + GPIO_Init(GPIOA, &GPIO_InitStructure); +} + +/** + * @brief Inserts a delay time. + * @param nCount: specifies the delay time length. + * @retval None + */ +void Delay(__IO uint32_t nCount) +{ + for(; nCount != 0; nCount--); +} + +#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 2011 STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3