setup.c

MDK学习之LCD_1620.rar

/******************************************************************************/
/* SETUP.C: Setup Functions                                                   */
/******************************************************************************/
/* This file is part of the uVision/ARM development tools.                    */
/* Copyright (c) 2005-2007 Keil Software. All rights reserved.                */
/* This software may only be used under the terms of a valid, current,        */
/* end user licence from KEIL for a compatible version of KEIL software       */
/* development tools. Nothing else gives you the right to use this software.  */
/******************************************************************************/

#include <stm32f10x_lib.h>              /* STM32F10x Library Definitions      */


#define ADC1_DR_Address    ((u32)0x4001244C)

unsigned short int ADC_ConvertedValue;

GPIO_InitTypeDef  GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
ADC_InitTypeDef   ADC_InitStructure;
DMA_InitTypeDef   DMA_InitStructure;


void SetupClock (void)
{
  RCC_DeInit ();                        /* RCC system reset(for debug purpose)*/
  RCC_HSEConfig (RCC_HSE_ON);           /* Enable HSE                         */

  /* Wait till HSE is ready                                                   */
  while (RCC_GetFlagStatus(RCC_FLAG_HSERDY) == RESET);

  RCC_HCLKConfig   (RCC_SYSCLK_Div1);   /* HCLK   = SYSCLK                    */
  RCC_PCLK2Config  (RCC_HCLK_Div1);     /* PCLK2  = HCLK                      */
  RCC_PCLK1Config  (RCC_HCLK_Div2);     /* PCLK1  = HCLK/2                    */
  RCC_ADCCLKConfig (RCC_PCLK2_Div4);    /* ADCCLK = PCLK2/4                   */

  *(vu32 *)0x40022000 = 0x01;           /* Flash 2 wait state                 */

  /* PLLCLK = 8MHz * 9 = 72 MHz                                               */
  RCC_PLLConfig (RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

  RCC_PLLCmd (ENABLE);                  /* Enable PLL                         */

  /* Wait till PLL is ready                                                   */
  while (RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);

  /* Select PLL as system clock source                                        */
  RCC_SYSCLKConfig (RCC_SYSCLKSource_PLLCLK);

  /* Wait till PLL is used as system clock source                             */
  while (RCC_GetSYSCLKSource() != 0x08);

  /* Enable USART1 and GPIOA clock                                            */
  RCC_APB2PeriphClockCmd (RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOE, ENABLE);

  /* SysTick event each 10 ms with input clock equal to 9MHz (HCLK/8)         */
  SysTick_SetReload(900000);

  SysTick_ITConfig(ENABLE);             /* Enable SysTick interrupt           */
}


void SetupADC (void) {

  /* Enable GPIOc clock                                                       */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);

  /* Enable DMA clock                                                         */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA, ENABLE);

  /* Enable ADC1 clock                                                        */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
  
  /* Configure PA1 (ADC Channel1) as analog input                             */
  GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_4;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIOC, &GPIO_InitStructure);

  /* DMA Channel1 Configuration ----------------------------------------------*/
  DMA_DeInit(DMA_Channel1);
  DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
  DMA_InitStructure.DMA_MemoryBaseAddr     = (u32)&ADC_ConvertedValue;
  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_HalfWord;
  DMA_InitStructure.DMA_MemoryDataSize     = DMA_MemoryDataSize_HalfWord;
  DMA_InitStructure.DMA_Mode               = DMA_Mode_Circular;
  DMA_InitStructure.DMA_Priority           = DMA_Priority_High;
  DMA_InitStructure.DMA_M2M                = DMA_M2M_Disable;
  DMA_Init(DMA_Channel1, &DMA_InitStructure);
  
  DMA_Cmd(DMA_Channel1, ENABLE);        /* Enable DMA Channel1                */
  
  /* ADC1 Configuration (ADC1CLK = 18 MHz) -----------------------------------*/
  ADC_InitStructure.ADC_Mode               = ADC_Mode_Independent;
  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);

  /* ADC1 Regular Channel1 Configuration                                      */
  ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_55Cycles5);

  ADC_DMACmd(ADC1, ENABLE);             /* Enable ADC1's DMA interface        */
  ADC_Cmd   (ADC1, ENABLE);             /* Enable ADC1                        */
  ADC_SoftwareStartConvCmd(ADC1,ENABLE);/* Start ADC1 Software Conversion     */ 
}


void SetupLED (void) {

  /* Enable GPIOC clock                                                       */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);

  /* Configure PB8..PB15 as outputs push-pull, max speed 50 MHz               */
  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_6  | GPIO_Pin_7  | GPIO_Pin_8 | 
                                 GPIO_Pin_9 ;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOC, &GPIO_InitStructure);

  /* Enable the SysTick Counter                                               */
  SysTick_CounterCmd(SysTick_Counter_Enable);
}