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這個(gè)是.c文件
//進(jìn)行對(duì)應(yīng)引腳配置
void MCP_PORTInit(void) //進(jìn)行MCP對(duì)應(yīng)的引腳配置
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB,ENABLE);//進(jìn)行對(duì)應(yīng)引腳時(shí)鐘開開啟 打開對(duì)應(yīng)的時(shí)鐘
GPIO_InitStructure.GPIO_Pin = MCP_CLK|MCP_CS; //推挽輸出
GPIO_InitStructure.GPIO_Mode =GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType=GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd =GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO口速度為50MHz
GPIO_Init(MCP_PORT, &GPIO_InitStructure); //根據(jù)設(shè)定參數(shù)初始化
GPIO_SetBits(MCP_PORT,MCP_CS|MCP_CLK); //output high
GPIO_InitStructure.GPIO_Pin = MCP_DOUT;
GPIO_InitStructure.GPIO_Mode =GPIO_Mode_IN; //進(jìn)行浮空輸入
GPIO_InitStructure.GPIO_OType=GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd =GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO口速度為50MHz
GPIO_Init(MCP_PORT, &GPIO_InitStructure); //根據(jù)設(shè)定參數(shù)初始化
}
uint16_t MCP3201_getAD(void) //進(jìn)行數(shù)據(jù)的獲取
{
u8 i=0;
u16 resualt=0;
//Read_DOUT_High; //如果出現(xiàn)測(cè)一次測(cè)不出來的情況，加個(gè)對(duì)應(yīng)的拉高即可
MCP_CLK_Low;//CLK進(jìn)行低電平設(shè)置
MCP_CS_Low;//CS進(jìn)行低電平設(shè)置啟動(dòng)數(shù)據(jù)轉(zhuǎn)換
delay_us(3);
//進(jìn)行數(shù)據(jù)的轉(zhuǎn)換
MCP_CLK_High;//CLK=1
delay_us(3);
MCP_CLK_Low;//CLK=0
delay_us(3);
MCP_CLK_High;//CLK=1
delay_us(3);
//數(shù)據(jù)轉(zhuǎn)換結(jié)束
MCP_CLK_Low;//CLK=0
delay_us(3);
//獲取數(shù)據(jù)轉(zhuǎn)換的結(jié)果
MCP_CLK_High;//CLK=1
delay_us(3);
for(i=0;i<12;i++)
{
MCP_CLK_Low;//CLK=0
delay_us(3);
MCP_CLK_High;//CLK=1
delay_us(3);
if(Read_DOUT==1)
{
resualt|=0x0001<<(11-i);
}
}
//關(guān)閉對(duì)應(yīng)的線
MCP_CLK_Low;//CLK=0
delay_us(3);
MCP_CS_High;//CS=1 //關(guān)閉對(duì)應(yīng)3201
delay_us(3);
#ifdef DEBUG
printf("GetMCP3201Value =%u\r\n",(uint16_t)(result));
printf("Vot=%u\r\n",(uint16_t)(12.2*value));
#endif
return resualt;
}
這個(gè)是.h文件
//對(duì)應(yīng)DOUT-->SPI_MISO
//對(duì)應(yīng)CS-->SPI_CS
//對(duì)應(yīng)DCLK->SPI_SCK
#define MCP_PORT GPIOB
#define MCP_CS GPIO_Pin_9
#define MCP_CLK GPIO_Pin_10
#define MCP_DOUT GPIO_Pin_14
//對(duì)應(yīng)引腳線
#define MCP_CLK_High GPIO_SetBits(MCP_PORT,MCP_CLK)
#define MCP_CLK_Low GPIO_ResetBits(MCP_PORT,MCP_CLK)
#define MCP_CS_High GPIO_SetBits(MCP_PORT,MCP_CS)
#define MCP_CS_Low GPIO_ResetBits(MCP_PORT,MCP_CS)
#define Read_DOUT GPIO_ReadInputDataBit(MCP_PORT,MCP_DOUT) //進(jìn)行對(duì)應(yīng)數(shù)據(jù)的讀取
#define Read_DOUT_High GPIO_SetBits(MCP_PORT,MCP_DOUT) //進(jìn)行高電平設(shè)置
希望各位大哥大姐幫我看看這個(gè)時(shí)序哪里寫的不對(duì)
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