LCD1602只显示第一排的黑块，求帮助 -

#include "lcd1602.h"
void LCD1602_GPIO_Config(void)
{
GPIO_InitTypeDef LCD1602_GPIOStruct;
RCC_APB2PeriphClockCmd(LCD1602_CLK, ENABLE);
LCD1602_GPIOStruct.GPIO_Mode = GPIO_Mode_Out_PP;
LCD1602_GPIOStruct.GPIO_Speed = GPIO_Speed_10MHz;
LCD1602_GPIOStruct.GPIO_Pin = LCD1602_E | LCD1602_RS | LCD1602_RW ;
GPIO_Init(LCD1602_GPIO_PORT,&LCD1602_GPIOStruct);
LCD1602_GPIOStruct.GPIO_Mode = GPIO_Mode_Out_OD;
LCD1602_GPIOStruct.GPIO_Pin = DB0 | DB1 | DB2 |DB3 | DB4 | DB5| DB6 | DB7 ;
GPIO_Init(LCD1602_GPIO_PORT,&LCD1602_GPIOStruct);
}
void LCD1602_WaitReady(void)
{
uint8_t sta;
GPIOB->ODR =0x00FF;
RSO(0);
RWO(1);
EO(1);
delay_us(1);
do{
sta=GPIO_ReadInputDataBit(LCD1602_GPIO_PORT,GPIO_Pin_7);
EO(0);
}while(sta);
}
void LCD1602_WriteCmd(uint8_t cmd)
{
//LCD1602_WaitReady();
delay_us(15);
RSO(0);
RWO(0);
EO(0);
delay_us(1);
EO(1);
LCD1602_GPIO_PORT->ODR &= (cmd|0xFF00);
EO(0);
delay_us(400);
}
void LCD1602_WriteDat(uint8_t dat)
{
//LCD1602_WaitReady();
delay_us(15);
RSO(1);
RWO(0);
delay_us(30);
EO(1);
LCD1602_GPIO_PORT->ODR &=(dat|0xFF00);
EO(0);
delay_us(400);
}
void LCD1602_SetCursor(uint8_t x, uint8_t y)
{
uint8_t addr;
if (y == 0)
addr = 0x00 + x;
else
addr = 0x40 + x;
LCD1602_WriteCmd(addr|0x80);
}
void LCD1602_ShowStr(uint8_t x, uint8_t y, uint8_t *str, uint8_t len)
{
LCD1602_SetCursor(x, y);
while (len--)
{
LCD1602_WriteDat(*str++);
}
}
//??1???
//x,y :????
//num:??(0~99)
//-----------------------------*/
void LCD_ShowNum(uint8_t x, uint8_t y,uint8_t num)
{
LCD1602_SetCursor(x, y);
LCD_ShowChar(x,y,num+'0');
}
void LCD_ShowChar(uint8_t x, uint8_t y,uint8_t dat)
{
LCD1602_SetCursor(x, y);
LCD1602_WriteDat(dat);
}
void LCD1602_Init(void)
{
LCD1602_GPIO_Config();
LCD1602_WriteCmd(0X38)；
LCD1602_WriteCmd(0x0C)；
LCD1602_WriteCmd(0x06)；
LCD1602_WriteCmd(0x01);
}

复制代码

#ifndef _BSP_LCD1602_H
#define _BSP_LCD1602_H
#include "stm32f10x.h"
#include "stm32f10x_gpio.h"
#include "delay.h"
#define LCD1602_CLK RCC_APB2Periph_GPIOB
#define LCD1602_GPIO_PORT GPIOB
#define LCD1602_E GPIO_Pin_12
#define LCD1602_RW GPIO_Pin_13
#define LCD1602_RS GPIO_Pin_14
#define EO(X) X? (GPIO_SetBits(LCD1602_GPIO_PORT,LCD1602_E)):(GPIO_ResetBits(LCD1602_GPIO_PORT,LCD1602_E))
#define RWO(X) X? (GPIO_SetBits(LCD1602_GPIO_PORT,LCD1602_RW)):(GPIO_ResetBits(LCD1602_GPIO_PORT,LCD1602_RW))
#define RSO(X) X? (GPIO_SetBits(LCD1602_GPIO_PORT,LCD1602_RS)):(GPIO_ResetBits(LCD1602_GPIO_PORT,LCD1602_RS))
#define DB0 GPIO_Pin_0
#define DB1 GPIO_Pin_1
#define DB2 GPIO_Pin_2
#define DB3 GPIO_Pin_3
#define DB4 GPIO_Pin_4
#define DB5 GPIO_Pin_5
#define DB6 GPIO_Pin_6
#define DB7 GPIO_Pin_7
void LCD1602_Init(void);
void LCD1602_ShowStr(uint8_t x, uint8_t y, uint8_t *str,uint8_t len);
void LCD_ShowNum(uint8_t x, uint8_t y,uint8_t num);
void LCD_ShowChar(uint8_t x, uint8_t y,uint8_t dat);
#endif //_BSP_LCD1602_H

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int main(void)
{
u8 smog_ppm ;
u8 Methane_ppm ;
u8 CO_ppm ;
LCD1602_Init();
userInit();
window_fan_init();
Bee_Init();
delay_init();
//TIM1_Int_Init(1999 , 35999);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
USART1_init();
Smog_Init();
//LCD1602_Init();
KEY_Init(); /
Gizwits_Init(); /
delay_ms(5);
while(1)
{
LCD_ShowNum(0,0,99);
}
}

复制代码