[paparazzi-commits] [5640] added non working adc driver

[antoine drouin]

Revision: 5640
          http://svn.sv.gnu.org/viewvc/?view=rev&root=paparazzi&revision=5640
Author:   poine
Date:     2010-08-23 22:56:47 +0000 (Mon, 23 Aug 2010)
Log Message:
-----------
added non working adc driver

Added Paths:
-----------
    paparazzi3/trunk/sw/airborne/stm32/adc_hw.c

Added: paparazzi3/trunk/sw/airborne/stm32/adc_hw.c
===================================================================
--- paparazzi3/trunk/sw/airborne/stm32/adc_hw.c                         (rev 0)
+++ paparazzi3/trunk/sw/airborne/stm32/adc_hw.c 2010-08-23 22:56:47 UTC (rev 
5640)
@@ -0,0 +1,79 @@
+#include "adc.h"
+
+#include <stm32/rcc.h>
+#include <stm32/gpio.h>
+#include <stm32/dma.h>
+#include <stm32/adc.h>
+
+
+void adc_init( void ) {
+
+  /* Configure pins as analog input*/
+  GPIO_InitTypeDef GPIO_InitStructure;
+  GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_3|GPIO_Pin_5;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
+  GPIO_Init(GPIOC, &GPIO_InitStructure);
+
+  GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_0|GPIO_Pin_1;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
+  GPIO_Init(GPIOB, &GPIO_InitStructure);
+
+  GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_0;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
+  GPIO_Init(GPIOA, &GPIO_InitStructure);
+
+
+  /* ADC1 configuration 
------------------------------------------------------*/
+  ADC_InitTypeDef ADC_InitStructure;
+  ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult;
+  ADC_InitStructure.ADC_ScanConvMode = ENABLE;
+  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
+  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
+  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
+  ADC_InitStructure.ADC_NbrOfChannel = 1;
+  ADC_Init(ADC1, &ADC_InitStructure);
+
+
+  /* Enable DMA1 clock */
+  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
+  
+ /* DMA1 channel1 configuration 
----------------------------------------------*/
+  DMA_InitTypeDef DMA_InitStructure;
+  DMA_DeInit(DMA1_Channel1);
+  DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
+  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&coder_values;
+  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
+  DMA_InitStructure.DMA_BufferSize = 1;
+  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
+  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
+  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
+  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
+  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
+  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
+  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
+  DMA_Init(DMA1_Channel1, &DMA_InitStructure);
+  
+  /* Enable DMA1 channel1 */
+  DMA_Cmd(DMA1_Channel1, ENABLE);
+  
+  /* Enable ADC1 DMA */
+  ADC_DMACmd(ADC1, ENABLE);
+
+  /* Enable ADC1 */
+  ADC_Cmd(ADC1, ENABLE);
+  
+  /* Enable ADC1 reset calibaration register */   
+  ADC_ResetCalibration(ADC1);
+  /* Check the end of ADC1 reset calibration register */
+  while(ADC_GetResetCalibrationStatus(ADC1));
+  
+  /* Start ADC1 calibaration */
+  ADC_StartCalibration(ADC1);
+  /* Check the end of ADC1 calibration */
+  while(ADC_GetCalibrationStatus(ADC1));
+  
+  /* Start ADC1 Software Conversion */ 
+  ADC_SoftwareStartConvCmd(ADC1, ENABLE); 
+
+}
+