main.c

st Cotex M3 的一个用SPI驱动的12864液晶的程序

#include "stm32f10x_lib.h"
#include "LCD12864.h"
#include "SPI1.h"

void RCC_Config(void);
void NVIC_Config(void);

int main(void)
{
  RCC_Config();
  NVIC_Config();
  SPI1_Config();

  LCD12864_Init();
  
  LCD12864_PutString(1,0, "Hello");
  
  while(1){
    
  }
}

//******************************************************************************
// Function Name  : RCC_Configuration
// Description    : Reset and Clock Control configuration
// Input          : None
// Output         : None
// Return         : None
//******************************************************************************
void RCC_Config(void)
{
    ErrorStatus HSEStartUpStatus;
    
    // Reset the RCC clock configuration to default reset state
    RCC_DeInit();
    
    // Configures the High Speed External oscillator
    RCC_HSEConfig(RCC_HSE_ON);
    
    // Waits for HSE start-up
    HSEStartUpStatus = RCC_WaitForHSEStartUp();
    
    if(HSEStartUpStatus == SUCCESS)
    {
        // Enable Prefetch Buffer
        FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
        
        // Sets the code latency value: FLASH Two Latency cycles
        FLASH_SetLatency(FLASH_Latency_2);
        
        // Configures the AHB clock(HCLK): HCLK = SYSCLK
        RCC_HCLKConfig(RCC_SYSCLK_Div1);
        
        // Configures the High Speed APB clcok(PCLK2): PCLK2 = HCLK
        RCC_PCLK2Config(RCC_HCLK_Div1);
        
        // Configures the Low Speed APB clock(PCLK1): PCLK1 = HCLK/2
        RCC_PCLK1Config(RCC_HCLK_Div2);
        
        // Configures the PLL clock source and multiplication factor
        // PLLCLK = HSE*PLLMul = 8*9 = 72MHz
        RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
        
        // Enable PLL
        RCC_PLLCmd(ENABLE);
        
        // Checks whether the specified RCC flag is set or not
        // Wait till PLL is ready
        while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
        
        // Select PLL as system clock source
        RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
        
        // Get System Clock Source
        // Wait till PLL is used as system clock source
        while(RCC_GetSYSCLKSource() != 0x08);
    }    
}

//******************************************************************************
// Function Name  : NVIC_Configuration
// Description    : Nested Vectored Interrupt Controller configuration
// Input          : None
// Output         : None
// Return         : None
//******************************************************************************
void NVIC_Config(void)
{
#ifdef VECT_TAB_RAM
    // Set the Vector Tab base at location at 0x20000000
    NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else
    // Set the Vector Tab base at location at 0x80000000
    NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif   
}