keil5编译出现警告
警告内容：
hardware\serial.c(100): warning: #223-D: function "Openmv_Receive_Data" declared implicitly
Openmv_Receive_Data(Res);
hardware\serial.c(101): warning: #223-D: function "Openmv_Data" declared implicitly
Openmv_Data();
代码部分：
#include "stm32f10x.h"
#include "Serial.h"
#include "usart.h"
//如果使用ucos,则包括下面的头文件即可.
#if SYSTEM_SUPPORT_OS
#include "includes.h" //ucos 使用
#endif
//
//加入以下代码,支持printf函数,而不需要选择use MicroLIB
#if 1
#pragma import(__use_no_semihosting)
//标准库需要的支持函数
struct __FILE
{
int handle;
};
FILE __stdout;
//定义_sys_exit()以避免使用半主机模式
void _sys_exit(int x)
{
x = x;
}
//重定义fputc函数
int fputc(int ch, FILE *f)
{
while((USART1->SR&0X40)==0);//循环发送,直到发送完毕
USART1->DR = (u8) ch;
return ch;
}
#endif
#if EN_USART1_RX //如果使能了接收
//串口1中断服务程序
//注意,读取USARTx->SR能避免莫名其妙的错误
u8 USART_RX_BUF[USART_REC_LEN]; //接收缓冲,最大USART_REC_LEN个字节.
//接收状态
//bit15， 接收完成标志
//bit14， 接收到0x0d
//bit13~0， 接收到的有效字节数目
u16 USART_RX_STA=0; //接收状态标记
//初始化IO 串口1
//bound:波特率
void uart_init(uint32_t bound)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;//TX引脚是USART外设控制的输出脚，所以选复用推挽输出
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//配置USART
USART_InitTypeDef USART_InitStructure;
USART_InitStructure.USART_BaudRate = bound;//设置波特率，写完后，init内部自动算好9600对应的分频系数，然后写入BRR寄存器
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//硬件流控制，None不使用流控
USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;//串口模式Tx/Rx
USART_InitStructure.USART_Parity = USART_Parity_No;//校验位，无校验
USART_InitStructure.USART_StopBits = USART_StopBits_1;//停止位
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长
USART_Init(USART1, &USART_InitStructure);
//开启RXNE标志位到NVIC的输出
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
//NVIC分组
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;//中断通道
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
NVIC_Init(&NVIC_InitStructure);
USART_Cmd(USART1, ENABLE);
}
void USART1_IRQHandler(void) //串口1中断服务程序
{
u8 Res;
#if SYSTEM_SUPPORT_OS //如果SYSTEM_SUPPORT_OS为真，则需要支持OS.
OSIntEnter();
#endif
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) //接收中断(接收到的数据必须是0x0d 0x0a结尾)
{
Res =USART_ReceiveData(USART1);//(USART1->DR); //读取接收到的数据
Openmv_Receive_Data(Res);
Openmv_Data();
USART_ClearITPendingBit(USART1, USART_IT_RXNE);
if((USART_RX_STA&0x8000)==0)//接收未完成
{
if(USART_RX_STA&0x4000)//接收到了0x0d
{
if(Res!=0x0a)USART_RX_STA=0;//接收错误,重新开始
else USART_RX_STA|=0x8000; //接收完成了
}
else //还没收到0X0D
{
if(Res==0x0d)USART_RX_STA|=0x4000;
else
{
USART_RX_BUF[USART_RX_STA&0X3FFF]=Res ;
USART_RX_STA++;
if(USART_RX_STA>(USART_REC_LEN-1))USART_RX_STA=0;//接收数据错误,重新开始接收
}
}
}
}
#if SYSTEM_SUPPORT_OS //如果SYSTEM_SUPPORT_OS为真，则需要支持OS.
OSIntExit();
#endif
}
#endif
