请教，重复几十次调用相同函数编译出错，删除一些正常

只看该作者 · 2021-5-3 16:57

本帖最后由 panxiaoyi 于 2021-5-4 01:03 编辑

#include "debug.h"
#include "Font0805.h"
#include "IIC.h"
#include "OLED.h"

unsigned int i;

int main(void)
{
// NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
// Delay_Init();
USART_Printf_Init(115200);
// printf("SystemClk:%d\r\n",SystemCoreClock);
// printf("This is printf example\r\n");

RCC->CTLR = 0x00000081;          //使能内部HSI振荡器8MHz，时钟微调默认
RCC->CFGR0  = 0x00280002;          //PLL=12倍频,默认使用1/2震荡器时钟,系统时钟使用PLL
RCC->CTLR  |= 0x01000000;          //使能PLL倍频，CPU时钟=8/2*12=48MHz

IIC_Init();
OLED_Init();
OLED_Clear();
OLED_Gotoxy(11,1);
OLED_String("CH32V103 -> SH1106");
OLED_Gotoxy(11,5);
OLED_String("21IC.COM PANXIAOYI");

while(1)
{
      OLED_Gotoxy(52,3);
      OLED_ShowU16(i);
      i++;
}
}

请教一下大家：
上面这条 USART_Printf_Init(115200); 是系统生成的代码，我想删除它，如果删除，则编译出错。
或者删除后，把下面的相同类型的 IIC_Write 代码也随便删除12条以上，则编译通过
请问是为什么？

复制

void OLED_Init(void)

{

    OLED_Delay(65535);

    IIC_Start();

    IIC_WriteAddr(0x78);//总线OLED地址

    IIC_Write(0x00);//准备写指令

    IIC_Write(0x40);//--set start line address  Set Mapping RAM Display     Start Line (0x00~0x3F)

    IIC_Write(0x81);//双字节指令，亮度

    IIC_Write(0x05);//亮度 0-FF

    IIC_Write(0xA1);//--Set SEG/Column Mapping     0xa0左右反置 0xa1正常

    IIC_Write(0xC8);//Set COM/Row Scan Direction   0xc0上下反置 0xc8正常

    IIC_Write(0xA8);//--set multiplex ratio(1 to 64)

    IIC_Write(0x3f);//--1/64 duty

    IIC_Write(0xD3);//-set display offset   Shift Mapping RAM Counter (0x00~0x3F)

    IIC_Write(0x00);//-not offset

    IIC_Write(0xd5);//--set display clock divide ratio/oscillator frequency

    IIC_Write(0x80);//--set divide ratio, Set Clock as 100 Frames/Sec

    IIC_Write(0xD9);//--set pre-charge period

    IIC_Write(0xF1);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock

    IIC_Write(0xDA);//--set com pins hardware configuration

    IIC_Write(0x12);

    IIC_Write(0xDB);//--set vcomh

    IIC_Write(0x40);//Set VCOM Deselect Level

    IIC_Write(0x20);//-Set Page Addressing Mode (0x00/0x01/0x02)

    IIC_Write(0x02);//

    IIC_Write(0x8D);//--set Charge Pump enable/disable

    IIC_Write(0x14);//--set(0x10) disable

    IIC_Write(0xA4);//正常，全亮 (0xa4/0xa5)

    IIC_Write(0xA6);// Disable Inverse Display On (0xa6/a7)

    IIC_Write(0xC0);//180`

    IIC_Write(0xA0);//180`

    IIC_Write(0xC8);//0`

    IIC_Write(0xA1);//0`

    IIC_Write(0xA6);//正常A6，反显A7

    IIC_Write(0xAF);//关闭AE，显示AF

    IIC_Stop();

}